Date: 03-02-2020

Case Style:

Case Number: H044904

Judge: Greenwood, P.J.

Court: California Court of Appeals Sixth Appellate District on appeal from the Superior Court, County of Santa Clara

Plaintiff's Attorney: Charles John Moll, III and Troy Mitchell VanDongen

Defendant's Attorney: Ward A. Penfold

Description: Appellant HGST, Inc. (HGST) filed an action against the County of Santa Clara
(the County) seeking a refund for business property taxes paid on machinery, equipment,
fixtures, and other personal property located in San Jose. Among other things, HGST
claimed the Santa Clara County Assessment Appeals Board (the AAB) erroneously
overassessed the value of the property. After a four-day trial, the trial court issued a
statement of decision and entered judgment in favor of the County.
HGST raises four contentions on appeal. First, HGST contends the trial court
erred by reviewing the entire case in blanket fashion under a substantial evidence
standard rather than examining each individual claim to determine which standard of
review should apply to that issue. Second, HGST contends the trial court erroneously
failed to review certain legal challenges to the valuation methodology applied by the
AAB. Third, HGST contends the trial court erred by upholding the AAB’s decision not
to apply the “purchase price presumption” set forth in Revenue and Taxation Code
2
section 110.1
Fourth, HGST contends the trial court erred by upholding the imposition of
interest on the escape assessments under section 531.4.
For the reasons below, we conclude the first three of HGST’s claims are without
merit, but we hold the trial court erred by upholding the imposition of interest under
section 531.4. We will reverse in part and remand for further proceedings on the cause of
action challenging the imposition of interest.
I. FACTUAL AND PROCEDURAL BACKGROUND
HGST bought the property at issue from IBM for $2.4 billion in 2002. The
property primarily consists of fixtures, machinery, and equipment for the manufacturing
of hard disk drives. The Santa Clara County Assessor annually imposed escape
assessments on the property from 2003 through 2008.
2
HGST challenged the assessor’s findings through multiple applications to the
AAB. After hearings on the matter, the AAB issued findings and conclusions in 2012
largely adopting the assessor’s findings of fact. In 2013, HGST filed a claim for a refund
of $15 million with the Santa Clara County Board of Supervisors, which denied the
claim.
In 2014, HGST filed an action against the County in the superior court seeking a
refund for the taxes paid. The first amended complaint sets forth 17 causes of action
alleging various errors in the AAB’s methods and factual findings. The trial court held
four days of hearings in 2015. In 2016, the court filed a statement of decision ruling
against HGST and entering judgment in favor of the County on all counts.
HGST timely appealed.
1 Subsequent undesignated statutory references are to the Revenue and Taxation
Code.
2 This appeal covers assessments issued for tax years 2003/2004, 2004/2005,
2005/2006, 2006/2007, and 2007/2008.
3
II. DISCUSSION
A. The Trial Court’s Standard of Review
HGST contends the trial court erred by applying the substantial evidence standard
of review to the AAB’s entire decision in a “blanket” or “wholesale” fashion. HGST
argues that the trial court should have reviewed certain claims de novo because those
claims presented questions of law, not fact—e.g., issues of statutory interpretation and
challenges to the AAB’s methodology. The County argues the trial court properly
applied the substantial evidence standard of review to each claim on an individual basis.
1. Standards of Review Applied by Trial Courts
A trial court reviewing an appeals board’s rulings on tax assessments applies
different standards of review, analogous to those applied by a court of appeal when
reviewing a trial court’s rulings. And like a court of appeal, the trial court applies a
substantial evidence standard of review to findings of fact. (Prudential Ins. Co. v. City
and County of San Francisco (1987) 191 Cal.App.3d 1142, 1148.) “The taxpayer has no
right to a trial de novo in the superior court to resolve conflicting issues of fact as to the
taxable value of his property.” (Norby Lumber Co. v. County of Madera (1988) 202
Cal.App.3d 1352, 1362.)
By contrast, “when a board of equalization purports to decide a question of law,
the decision is reviewed de novo.” (Maples v. Kern County Assessment Appeals Bd.
(2002) 96 Cal.App.4th 1007, 1013 (Maples).) “[I]nterpretation of statutes and
administrative regulations are quintessential issues of law.” (Mission Housing
Development Co. v. City and County of San Francisco (1997) 59 Cal.App.4th 55, 73.)
Furthermore, “where the taxpayer attacks the validity of the valuation method itself, the
issue becomes a question of law subject to de novo review.” (Elk Hills Power, LLC v.
Board of Equalization (2013) 57 Cal.4th 593, 606.) The question for the trial court is
then “whether the challenged method of valuation is arbitrary, in excess of discretion, or
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in violation of the standards prescribed by law.” (Bret Harte Inn, Inc. v. City and County
of San Francisco (1976) 16 Cal.3d 14, 23 (Bret Harte Inn).)
A taxpayer may also claim that although the appeals board chose a valid method
of valuation, the board misapplied the chosen method. In that case, the trial court applies
a substantial evidence standard based on a review of the administrative record, without
taking new evidence. “Where the taxpayer claims a valid valuation method was
improperly applied, the trial court is limited to reviewing the administrative record.
[Citation.] The court may overturn the assessment appeals board’s decision only if there
is no substantial evidence in the administrative record to support it.” (Maples, supra, 96
Cal.App.4th at p. 1013.) However, “[w]hether a taxpayer is challenging ‘method’ or
‘application’ is not always easy to ascertain.” (Ibid.)
2. The Trial Court Properly Applied the Substantial Evidence Standard of
Review to Individual Claims Where Required
HGST contends the trial court improperly applied the substantial evidence
standard of review to the entire matter in “blanket” fashion. HGST concedes that certain
claims it raised were factual, properly requiring review under the substantial evidence
standard. But HGST contends the trial court should have determined the proper standard
of review on an issue-by-issue basis. For example, as set forth in Section II.B. below,
HGST claims it also contested the valuation methodology itself, requiring de novo review
by the trial court.
As the County points out, the trial court determined and applied the standard of
review on an issue-by-issue basis. In its statement of decision, the court addressed each
of the 17 causes of action in turn and applied the standard of review to each claim
independently. For example, in ruling on the first cause of action—a strictly procedural
5
claim about the timeliness of the assessor’s raise letters3
—the relevant dates were not in
dispute; the court simply looked to the applicable regulations to determine that the
assessor acted in a timely fashion. The court did not review this claim under a substantial
evidence standard. By contrast, in considering other causes of action on a claim-by-claim
basis, the court expressly applied a substantial evidence standard of review to each claim
independently, e.g.: “SINCE THE THIRD CAUSE OF ACTION CHALLENGES
FINDINGS OF FACT AND SUBSTANTIAL EVIDENCE SUPPORTS THE AAB’S
DECISION, THE COUNTY IS ENTITLED TO JUDGMENT.”
HGST focuses on an introductory section in the trial court’s statement of decision
in which the court stated, “Having now reviewed the Administrative Record, heard the
testimony of the parties, and considered the arguments of counsel, the Court now
concludes that the substantial evidence standard applies to this case, and no evidence
outside of the Administrative Record is admissible for consideration by this Court.”
(Italics added.) HGST contends the italicized portion of that sentence shows the court
applied the substantial evidence standard of review in “wholesale” fashion to the entire
case.
HGST ignores the context of this statement, wherein the trial court was ruling on
the scope of the evidence under its review. When a taxpayer claims an appeals board
improperly applied a valid valuation method, the trial court is limited to reviewing the
administrative record for substantial evidence. (Maples, supra, 96 Cal.App.4th at p.
1013.) Here, HGST had argued prior to the hearing that it was “entitled to submit ‘new
evidence at trial’ ” because HGST’s claims went beyond a challenge to the application of
the valuation method. The County argued otherwise and moved to exclude the
introduction of any new evidence. At the start of the hearing, the trial court ruled that it
3 The assessor issued multiple “raise letters” increasing the assessed value of the
property. In this appeal, HGST does not challenge the trial court’s ruling on this cause of
action.
6
was unable to determine whether HGST was entitled to submit new evidence based on
the nature of its claims. Accordingly, the court tentatively ruled that HGST could
introduce testimony at the hearing, and the court reserved ruling on whether new
evidence could be considered in making a final determination. After the hearing, the
court found in its statement of decision that, having considered the proffered new
evidence, the court’s review was limited to the administrative record under a substantial
evidence standard. In other words, the court’s statement was an evidentiary ruling, not a
blanket application of the same standard of review to the entire case. As a practical
matter, because the trial court applied the substantial evidence standard to most of
HGST’s claims, it was not inaccurate for the trial court to characterize its role as applying
that standard to “this case.” Nonetheless, as explained above, the court did analyze each
claim on an issue-by-issue basis and it applied the standard of review to each claim
independently of the others.
Accordingly, we conclude this claim is without merit. As to whether the court
incorrectly determined or improperly applied the standard of review for any specific
claims, we consider those arguments below.
B. The Trial Court’s Review of the AAB’s Valuation Methodology
In its complaint, HGST alleged multiple causes of action, among others,
challenging the AAB’s valuation of the machinery and equipment located in San Jose. In
several causes of action, HGST claimed the AAB used the wrong discount rate and the
wrong income adjustment factor in its calculations. The trial court determined that these
claims constituted challenges to the AAB’s findings of fact, and the court upheld the
AAB’s findings under a substantial evidence standard of review. HGST contends these
claims constituted challenges to the validity of the AAB’s valuation methodology and
that the trial court erred by reviewing the AAB’s findings for substantial evidence rather
than reviewing them de novo as questions of law. The County contends these claims
7
constitute challenges to the AAB’s factual findings, and that the trial court properly
upheld those findings as supported by substantial evidence.
1. Background
The parties agree that the AAB properly applied the “Cost Approach” method of
valuation. (See Cal. Code Regs., tit. 18, § 6.) They disagree, however, on the details of
that approach. The Cost Approach method relies on a formula for estimating the value of
the machinery and equipment at issue. The valuation formula under the Cost Approach
incorporates two factors, among others: the rate of return on the property, and the
income adjustment factor.4
The AAB applied an 11 percent rate of return, but HGST
asserted the rate should have been between 6.25 percent and 7.5 percent. Similarly, the
AAB applied an income adjustment factor of 12 percent, but HGST asserted it should
have been 22 percent.
In its findings and conclusions, the AAB summarized the evidence adduced on
these factors as follows. First, the AAB noted that the parties agreed that the Cost
Approach provided the proper methodology, and that “considerable testimony was
presented” regarding the specifics of the methodology. As to the rate of return, HGST’s
expert relied on the “mass appraisal recommendations” provided by the State Board of
Equalization (SBE) to arrive at rates ranging between 6.25 percent and 7.5 percent,
depending on the particular lien date. By contrast, the assessor presented “weighted
average cost of capital” calculations for IBM and other large hard disk drive
manufacturers in the same industry as HGST. Because IBM had recently owned the
equipment in question, the assessor relied on its estimate of 11 percent for IBM. After
reviewing the evidence, the AAB adopted the 11 percent rate of return.
4 The briefs and the record sometimes refer to the “discount rate” when
referencing the rate of return. Similarly, the income adjustment factor is sometimes
referred to as the “income decline factor” or “annual decline factor.” Any differences in
the terminology or meanings of these terms are immaterial to this appeal.
8
As to the income adjustment factor, the AAB summarized the testimony from
HGST’s expert, who provided a scatter gram to support a 22 percent adjustment factor
based on the declining prices of disk drives. The AAB noted that this estimate was based
on the product produced by the equipment in question, not the equipment itself. The
assessor’s expert further noted that HGST’s expert had failed to consider sales volume.
The assessor’s expert opined that this failure resulted in an inaccurate estimate because
when a highly technical product is new to the market, the price is high but the sales
volume is very low. The assessor presented alternative estimates based on several
previous hearings in which computer industry representatives had agreed to a 12 percent
income adjustment factor. The assessor also relied on producer price index data on hard
disk drive manufacturers as published by the Bureau of Labor Statistics. The AAB
adopted the assessor’s estimate of 12 percent for the income decline factor.
The trial court reviewed the record on these issues under a substantial evidence
standard of review and found the AAB’s findings to be supported by substantial
evidence.
2. The Trial Court Properly Ruled That the AAB’s Findings Are Supported by
Substantial Evidence
HGST contends that its challenges to the AAB’s use of an 11 percent rate of return
and a 12 percent income adjustment factor constitute challenges to the valuation
methodology itself, not the AAB’s findings of fact. HGST relies on the SBE Assessors’
Handbook as persuasive authority under the holdings set forth in Sky River LLC v.
County of Kern (2013) 214 Cal.App.4th 720 (Sky River). HGST argues that the trial
court therefore erred by reviewing these claims under a substantial evidence standard
rather than reviewing them de novo as questions of law.
But HGST’s own pleadings are inconsistent on this point. The complaint alleges
in the fourth cause of action that the AAB utilized an improper valuation methodology,
but it also alleges the rate of return and income adjustment factor are findings based on
9
an invalid application of that method. The thirteenth cause of action alleges the AAB’s
use of the 11 percent rate of return and 12 percent income adjustment factor constituted
“erroneous factual findings” that were “not based on substantial evidence.” As noted
above, an appeals board’s factual findings and alleged misapplication of a valuation
method are subject to review for substantial evidence. (Dreyer’s Grand Ice Cream, Inc.
v. County of Kern (2013) 218 Cal.App.4th 828, 835 (Dreyer’s); Maples, supra, 96
Cal.App.4th at p. 1013.)
Notwithstanding the language in the complaint, the trial court properly reviewed
the AAB’s decision to use the 11 percent rate of return and 12 percent income adjustment
factor for substantial evidence. In doing so, the trial court relied on Dreyer’s, supra, 218
Cal.App.4th 828. In Dreyer’s, as in this case, the taxpayer challenged the trial court’s use
of the substantial evidence standard of review. The parties agreed on the overall “cost
approach” valuation method but disagreed about the use of an adjustment factor for
underutilization. (Id. at pp. 837-838.) The taxpayer argued on appeal that the issue
presented a question of law, such that the trial court should have considered it de novo.
The Court of Appeal acknowledged that “ ‘[w]hether a taxpayer is challenging “method”
or “application” is not always easy to ascertain,’ ” but the court ultimately held it to be an
issue of fact, not law. “[T]he issue before the trial court was not one of law: Whether the
cost method of valuation mandated making an underutilization adjustment in an
appropriate case. Rather, the issue was one of fact: Whether on the evidence presented
the board could conclude that plaintiff failed to satisfy its burden of proving an
underutilization adjustment was appropriate in this case. The trial court properly applied
the substantial evidence standard of review.” (Id. at p. 838.) Here, the trial court ruled
that the AAB’s decision to apply the 11 percent rate of return and 12 percent income
adjustment factor were fact-specific choices analogous to the board’s decision not to use
an underutilization adjustment in Dreyer’s. We agree; these decisions were not matters
of law. Regardless of whether they are more properly characterized as findings of fact or
10
an “application” of the valuation method, the trial court properly reviewed them under the
substantial evidence standard.
HGST relies primarily on Sky River, supra, 214 Cal.App.4th 720. In Sky River,
the parties agreed on the overall valuation methodology, but disagreed on one element of
that methodology. In converting from an after-tax discount rate to a before-tax discount
rate, the parties disagreed about whether the assessor should have selected an average
corporate income tax rate or a combined federal and state marginal tax rate. (Id. at p.
728.) The Court of Appeal held that this was a matter of law reviewable de novo because
it was a dispute over the validity of the method itself. “Which income tax rate should be
used—the marginal rate or an average rate—is a question about the method of calculating
the appropriate conversion rate.” (Id. at p. 731.) The court went on to note, however,
that “[t]he exact percentage to be used for that rate would be a question of fact to be
determined by the board based on the evidence presented.” (Ibid., italics added.) Here,
the disputed issues were much closer to the latter type of dispute, wherein the parties each
presented expert testimony about the exact numbers the assessor should have used in
applying the method. The trial court’s ruling here was therefore in accord with Sky River.
As the County accurately points out, there is no law requiring a specific rate or
percentage in applying the rate of return or income adjustment factors. HGST argues the
proper numbers are dictated by the methodologies set forth in the SBE Assessors’
Handbook. But HGST concedes that the Handbook is not legally binding authority;
rather, some courts have cited to it as persuasive authority. More to the point, however,
HGST points to nothing in the Handbook that would require the use of HGST’s preferred
numbers. Rather, HGST relies on one section in the Handbook, which discusses methods
for deriving the rate of return using the weighted average cost of capital (WACC) for a
firm. The Handbook admonishes that “a particular project’s cost of capital should reflect
the risk of that project, which may or may not reflect the average risk of the firm. Some
projects considered by a given firm will be of above-average risk; some will be of below-
11
average risk. Thus, the firm’s WACC is not the correct discount rate for the firm to use
when valuing a project that differs from the average risk of the firm.” (SBE Assessors’
Handbook (Dec. 1998) § 502, Advanced Appraisal, p. 95.) Citing to this last sentence in
isolation, HGST maintains that the AAB failed to apply this methodology because the
AAB used a firm-wide rate of return of 11 percent for IBM.
As the County points out, however, the remainder of the cited passage from the
SBE Assessor’s Handbook allows for such an approach, which it describes as a “pure
play” or “comparable company variation” of the WACC method. The Handbook states,
“In this variation of the [method], the appraiser attempts to find several publicly traded,
single-product companies in the same line of business as the project or property being
valued.” (SBE Assessors’ Handbook (Dec. 1998) § 502, Advanced Appraisal, p. 95.) As
HGST’s own expert acknowledged, this was the approach used by the assessor. HGST’s
expert disputed the AAB’s selection of IBM as a comparable company, but he did not
dispute that the comparable company method was a proper method. Whether a company
such as IBM is an appropriately comparable company to rely upon as a source of data for
this method is not a matter of law; it is a factual determination, and nothing in the
Handbook or any other source of authority cited by HGST specifies a different method.
Similarly, HGST attacks the AAB’s selection of an income adjustment factor of
12 percent as a methodological failure. As noted above, HGST’s expert put forth an
estimate of 22 percent, and the assessor introduced testimony to undermine the expert’s
analysis. The AAB settled on the 12 percent rate because it had been agreed to by
computer manufacturers’ industry representatives in past hearings. HGST argues that
this method was arbitrary and in excess of the assessor’s discretion, citing Bret Harte Inn,
supra, 16 Cal.3d at p. 25. In that case, the California Supreme Court upheld a trial
court’s determination that an assessor had erroneously applied an arbitrary 50 percent
depreciation factor. But the assessor there had not provided any basis for the number.
By contrast, here the AAB considered the competing testimony of the assessor’s expert
12
and HGST’s expert, each of whom provided abundant analysis to support their respective
positions. The AAB weighed the parties’ evidence and credited the assessor’s testimony.
The trial court appropriately applied the substantial evidence standard of review to
the AAB’s findings. HGST does not cite any rule of law that sets forth a method for
determining the income adjustment factor in any manner contrary to the AAB’s decision.
The trial court noted this lack of authority, finding that HGST’s expert could not identify
a statute, property tax rule, or Handbook provision that mandated the use of HGST’s
preferred rate. Furthermore, the AAB’s reliance on the testimony of a single witness
constitutes substantial evidence sufficient to support its findings. (See City and County of
San Francisco v. Givens (2000) 85 Cal.App.4th 51, 56 [witness’s testimony sufficient to
constitute substantial evidence].) We conclude this claim is without merit.
C. Application of Revenue and Taxation Code Section 110(b)
HGST contends the trial court erred by upholding the AAB’s decision not to apply
the purchase price presumption set forth in section 110(b). The County contends the trial
court correctly applied the substantial evidence standard of review to affirm the AAB’s
finding that the purchase price presumption did not apply. Among other things, the
County points out that HGST failed to submit the mandatory change in ownership
statement required under section 110(c) as a predicate to the application of the purchase
price presumption.
1. Legal Principles
Generally, property in California is taxed based on its fair market value. “All
property is taxable and shall be assessed at the same percentage of fair market value.
When a value standard other than fair market value is prescribed by this Constitution or
by statute authorized by this Constitution, the same percentage shall be applied to
determine the assessed value. The value to which the percentage is applied, whether it be
the fair market value or not, shall be known for property tax purposes as the full value.”
(Cal. Const., art. XIII, § 1.)
13
Section 110 defines “fair market value” as “the amount of cash or its equivalent
that property would bring if exposed for sale in the open market under conditions in
which neither buyer nor seller could take advantage of the exigencies of the other, and
both the buyer and the seller have knowledge of all of the uses and purposes to which the
property is adapted and for which it is capable of being used, and of the enforceable
restrictions upon those uses and purposes.” (§ 110, subd. (a).)
Subdivision (b) of section 110 sets forth the following “purchase price
presumption,” providing in part: “For purposes of determining the ‘full cash value’ or
‘fair market value’ of real property, other than possessory interests, being appraised upon
a purchase, ‘full cash value’ or ‘fair market value’ is the purchase price paid in the
transaction unless it is established by a preponderance of the evidence that the real
property would not have transferred for that purchase price in an open market transaction.
The purchase price shall, however, be rebuttably presumed to be the ‘full cash value’ or
‘fair market value’ if the terms of the transaction were negotiated at arms length between
a knowledgeable transferor and transferee neither of which could take advantage of the
exigencies of the other. ‘Purchase price,’ as used in this section, means the total
consideration provided by the purchaser or on the purchaser’s behalf, valued in money,
whether paid in money or otherwise.” (§ 110, subd. (b).)
Subdivision (c) of section 110 requires the taxpayer to submit certain information
within a required change of ownership statement: “For real property, other than
possessory interests, the change of ownership statement required pursuant to Section 480,
480.1, or 480.2, or the preliminary change of ownership statement required pursuant to
Section 480.4, shall give any information as the board shall prescribe relative to whether
the terms of the transaction were negotiated at ‘arms length.’ In the event that the
transaction includes property other than real property, the change in ownership
statement shall give information as the board shall prescribe disclosing the portion of the
purchase price that is allocable to all elements of the transaction. If the taxpayer fails to
14
provide the prescribed information, the rebuttable presumption provided by subdivision
(b) shall not apply.” (§ 110, subd. (c), italics added.)
2. The Trial Court Did Not Err in Affirming the AAB’s Decision Not to Apply
the Purchase Price Presumption
As set forth above, if the transaction involves property other than real property,
subdivision (c) of section 110 requires the taxpayer to provide a change in ownership
with certain prescribed information. Failure to provide this statement results in the
elimination of the purchase price presumption.
The trial court made the following finding on this point: “Although HGST claims
that the Purchase Price Presumption is applicable, it failed to offer into evidence either
the change in ownership statement or the preliminary change in ownership statement
during the AAB proceedings. Given this failure of proof, the Purchase Price Presumption
is not applicable as a matter of law.” The County contends that the trial court properly
found that HGST’s failure to provide such a statement precluded the application of the
purchase price presumption.
HGST does not identify or cite to any change in ownership statement in the
record; HGST implicitly concedes that it provided no express change in ownership
statement. Instead, HGST argues that, although it did not provide any form setting forth
a change in ownership statement, it provided the underlying information required by such
a statement. HGST contends this is all that is required to enjoy the benefit of the
purchase price presumption, based on an isolated reading of the final sentence in
subdivision (c): “If the taxpayer fails to provide the prescribed information, the
rebuttable presumption provided by subdivision (b) shall not apply.” (§ 110, subd. (c).)
We are not persuaded. “[W]e start with the language of the statute, ‘giv[ing] the
words their usual and ordinary meaning [citation], while construing them in light of the
statute as a whole and the statute’s purpose [citation].’ ” (Apple Inc. v. Superior Court
(2013) 56 Cal.4th 128, 135, italics added.) Reading the statute as a whole, section 110
15
requires more than the bare submission of information to trigger application of the
purchase price presumption; it instructs the taxpayer to provide “the change of ownership
statement required pursuant to Section 480, 480.1, or 480.2, or the preliminary change of
ownership statement required pursuant to Section 480.4 . . . .”5
The sentence preceding
the final sentence of subdivision (c) states that “the change in ownership statement shall
give information as the board shall prescribe disclosing the portion of the purchase price
that is allocable to all elements of the transaction.” The reference to “prescribed
information” in the final sentence of subdivision (c) clearly refers to the information as
furnished within the change of ownership statement.
HGST does not identify any statements, documents, or forms that would comply
with this requirement. Accordingly, the trial court’s ruling is supported by both the
record and the law, and we affirm it regardless of the standard of review. Even under
HGST’s preferred interpretation, the statute requires the taxpayer to provide information
“disclosing the portion of the purchase price that is allocable to all elements of the
transaction” when the transaction includes property other than real property. (§ 110,
subd. (c).) HGST fails to cite any such information in the record.
HGST argues that the County waived this argument by raising it for the first time
in the trial court, and that it could have provided the required statement if the County had
requested one during the AAB hearings. But section 110 affirmatively places the burden
on the taxpayer to provide the statement necessary for application of the purchase price
assumption. The statute put HGST on full notice of the requirement. We find no waiver
by the County. We conclude this claim is therefore without merit.
5 As the parties point out, the Board of Equalization provides forms and
instructions for these purposes. We hereby grant HGST’s motion for judicial notice of
the existence of these forms and the accompanying legislative history documents. (Evid.
Code, § 452.)
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D. Imposition of Interest
HGST contends the trial court erroneously upheld the imposition of interest
against HGST under section 531.4. HGST argues that the AAB failed to address the
issue and failed to make the factual findings necessary to determine whether—or how
much—interest should be assessed. The County contends the trial court properly upheld
the AAB’s imposition of interest under sections 506 and 531.4.
1. Background
Section 531 provides, in part: “Escape assessments made as the result of an
owner’s failure to file a property statement as herein provided shall be subject to the
penalty and interest imposed by Sections 463 and 506, respectively.” (§ 531, italics
added.) Section 531 is in Article 4, “Property Escaping Assessment,” which sets forth
subsequent code sections defining various categories of escape assessments and the
conditions under which penalties and interest may be imposed. These code sections
include section 531.4.
The AAB’s findings and conclusions did not cite to any code section in Article 4
as a basis for issuing escape assessments or imposing interest. The trial court’s statement
of decision cited only to section 531 and section 506 as a basis for imposing interest.
Although there is some ambiguity in the record about exactly which code section
authorized the imposition of interest in this matter, the County took the position at oral
argument that section 531.4 provided the operative authority. HGST agrees.
Section 531.4 specifically provides for interest when an assessee fails to accurately
report property used in a business, trade, or profession: “When an assessee files with the
assessor a property statement or report on a form prescribed by the board with respect to
property held or used in a profession, trade or business and the statement fails to report
any taxable tangible property accurately, regardless of whether this information is
available to the assessee, to the extent that this failure causes the assessor not to assess
the property or to assess it at a lower valuation than he would enter on the roll if the
17
property had been reported to him accurately, that portion of the property which is not
reported accurately, in whole or in part, shall be assessed as required by law. If the failure
to report the property accurately is willful or fraudulent, the penalty and interest provided
in Sections 504 and 506 shall be added to the additional assessment; otherwise only the
interest provided in Section 506 shall be added.” (§ 531.4.) Section 506 imposes interest
“at the rate of three-fourths of 1 percent per month from the date or dates the taxes would
have become delinquent if they had been timely assessed to the date the additional
assessment is added to the assessment roll.” (§ 506.) Both parties agree that no penalties
were imposed under section 531.4, and there was no claim that HGST acted willfully or
fraudulently. Interest was imposed based solely on the last clause in section 531.4.
The AAB’s statement of findings and conclusions made no findings of fact
regarding the imposition of interest or whether HGST had failed to accurately report its
property within the meaning of section 531.4. The eleventh cause of action in HGST’s
complaint alleged that the assessor improperly imposed “penalty interest” on unpaid
assessments and that the AAB erroneously failed to remove the interest under section
506. At trial, the County’s expert testified to the process for calculating interest and
clarified that because there was no finding of willful failure to report the property, only
interest (and no penalty) was applicable to the unpaid taxes under section 531.4. The
expert testified that imposition of interest was not within the AAB’s jurisdiction and that
interest is added automatically to any escape assessment if the assessee neglects to report
property or “it was not valued correctly.”
The trial court’s statement of decision rejected HGST’s claim and set forth the
basis for this ruling, noting first that section 506 is not a “penalty” provision, and stating
that section 506 mandates interest “shall” be added to any taxes relating to property that
escaped assessment. The trial court did not address section 531.4. The court relied upon
the testimony of the County’s expert and applied a substantial evidence standard of
review to conclude that sufficient evidence—i.e., the issuance of escape assessments—
18
supported the imposition of interest. In other words, the trial court concluded that
because the AAB had found HGST owed tax as a matter of fact, the law required the
imposition of interest.
2. The Trial Court Misapplied Revenue and Taxation Code Section 531.4
HGST contends interest should not have been imposed under section 531.4
because there was no finding that HGST failed to accurately report its property within the
meaning of that section. HGST claims that, to the contrary, it submitted property
statements accurately listing all the property at issue. The County contends that the
phrase “failure to report the property accurately” in section 531.4 means that the assessee
must accurately report the cost of those assets, and that merely providing a list of them is
insufficient to avoid interest. The County takes the same position set forth by the trial
court—that the AAB’s issuance of escape assessments necessarily implies that HGST
failed to accurately report its property, such that the only “finding” necessary under
section 531.4 is the fact that escape assessments were properly issued. The County cites
no authority for this interpretation apart from the plain language of section 531.4.
Regardless of the precise meaning of the phrase “failure to report the property
accurately” in section 531.4, that section does not automatically authorize the imposition
of interest based solely upon the issuance of any escape assessment. The issuance of an
escape assessment does not necessarily imply that the assessee failed to report its
property accurately within the meaning of section 531.4. “Property that has ‘escaped’
assessment was underassessed, not assessed at all, or was incorrectly valued,
misclassified, etc., resulting in an under or overassessment.” (Apple Computer, Inc. v.
County of Santa Clara Assessment Appeals Bd. (2003) 105 Cal.App.4th 1355, 1362,
citing American Airlines, Inc. v. County of San Mateo (1996) 12 Cal.4th 1110, 1127.)
When property escapes assessment, the assessor has a constitutional duty to issue escape
assessments “even though the taxpayer has accurately reported the cost or value figures.”
(Bauer-Schweitzer Malting Co. v. City and County of San Francisco (1973) 8 Cal.3d 942,
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945 (Bauer-Schweitzer).) In Bauer-Schweitzer, an assessor undervalued the taxpayer’s
property by using an improperly low assessment ratio. After the assessor was indicted
for misconduct, escape assessments were issued on the undervalued property, even
though the taxpayer had accurately reported the cost of its property to the assessor and
there was no evidence of wrongdoing by the taxpayer. (Id. at p. 944.) The California
Supreme Court upheld the issuance of escape assessments under section 531,
notwithstanding the taxpayer’s accurate reporting. (Id. at p. 947.) The high court noted
that the version of section 531.1 in effect at the time authorized escape assessments as the
result of “a failure by the taxpayer to report accurately the cost of the property,” but the
court added, “Admittedly, such was not the situation here.” (Id. at p. 947, fn. 3.)
Lower courts have since held that an escape assessment may be properly issued as
the result of a previous mistake by the assessor. (Hewlett-Packard Co. v. County of Santa
Clara (1975) 50 Cal.App.3d 74 (Hewlett-Packard).) In Hewlett-Packard, the taxpayer
gave the assessor “all information required by law or requested by him” regarding the
property at issue. (Id. at p. 77.) The assessor, however, misclassified some of the
equipment and underassessed it as a result. Later, another auditor discovered the mistake,
and the assessor issued escape assessments to recover the additional taxes. On appeal,
the taxpayer argued “it is inequitable to affix additional tax liability on a taxpayer where
he has fully and accurately reported the cost of his property and the assessor has honestly,
though mistakenly, failed to assess the property to the fullest extent provided by law.”
(Id. at p. 81.) Citing Bauer-Schweitzer, supra, the Court of Appeal rejected this argument
and upheld the issuance of escape assessments.
These cases make clear that the mere issuance of an escape assessment does not
necessarily imply the taxpayer failed to report its property accurately. Accordingly, it
was error for the trial court to conclude that substantial evidence supported the imposition
of interest under section 531.4 based solely upon the fact that escape assessments were
properly issued.
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The County asserts that abundant evidence showed HGST failed to report its
property accurately. The County points out that HGST’s business property statements
reported the cost of the assets based on 45 percent of IBM’s net book value at the time of
the purchase. The AAB found thousands of assets were booked with a stated value of
just one dollar. The AAB found these reported costs were not accurate evidence of the
full cash value of the assets. But section 531.4 is limited to the assessment of property
“to the extent that [the assessee’s failure to report any tangible property accurately]
causes the assessor not to assess the property or to assess it at a lower valuation than he
[or she] would enter on the roll if the property had been reported to him [or her]
accurately . . . .” (§ 531.4.) Section 531.4 mandates “that portion of the property which
is not reported accurately, in whole or in part, shall be assessed as required by law.”
(§ 531.4.) It is that “additional assessment” that is subject to the imposition of interest
under section 531.4. The AAB made no findings on what portion of the property was
reported accurately or to what extent the escape assessments were caused by HGST’s
purported failure to report the property accurately under section 531.4. The County does
not cite any evidence to support such a finding. Before interest can be imposed as the
result of an escape assessment, the assessor must introduce evidence of the factual
predicates required under the code section authorizing the specific type of escape
assessment that triggers the interest. (See Beckman Instruments, Inc. v. County of
Orange (1975) 53 Cal.App.3d 767, 777 (Beckman Instruments) [appeals board made
implied findings and trial court made express findings on the factual predicates for
imposition of interest under section 531.3].)
On this record, we cannot determine how much interest was ostensibly imposed as
a result of HGST’s failure to report property accurately under section 531.4, and we
cannot determine what substantial evidence would support such an imposition. For these
reasons, we will reverse the judgment.
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HGST contends we must remand the matter to the AAB to find the statutorily
required facts. The County contends the imposition of interest does not fall within the
AAB’s jurisdiction. (See Cal. Code Regs., tit. 18, § 302, subd. (a) [establishing the
board’s functions].) But section 531.4 is not concerned solely with the imposition of
interest; rather, it sets forth the factual predicates for issuing escape assessments under
that code section, and it then imposes interest on those assessments. The AAB has the
power to make findings on the factual predicates required to issue escape assessments
under section 531.4, and the trial court has the power to review those findings under a
substantial evidence standard of review. (See Beckman Instruments, supra, 53
Cal.App.3d at p. 777 [reviewing findings of fact necessary to support imposition of
interest under section 531.3].) We will remand the matter for further proceedings.

Outcome: We reverse the trial court’s order entering judgment for the County on the
eleventh cause of action. The judgment is affirmed in all other respects. The matter is remanded to the trial court with directions to remand the matter to the Santa Clara County Assessment Appeals Board. Consistent with this opinion, the Board shall make any findings required under Revenue and Taxation Code section 531.4 to determine interest on any escape assessments. The parties shall bear their own costs on appeal.

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