California · UK Coming Soon

Property Tax Appeals

Independent appraisal support for assessment appeals and decline-in-value reassessments. California certified — UK Valuation Tribunal coming soon.

California Practice

Evaluate the Assessed Value With Independent Evidence

Assessors operate at scale. The values they assign are often based on mass appraisal models that do not reflect the specific condition, location, or market circumstances of an individual property. An independent appraisal — prepared under USPAP standards, with documented market evidence — is the most effective evidentiary foundation for an assessment appeal proceeding.

We provide appraisal support for property tax appeals across California. Each jurisdiction has its own appeal procedure, statutory deadline, and evidentiary standard. We know the differences and prepare reports calibrated to each board's expectations.

For California, decline-in-value reassessments are pursued under Revenue and Taxation Code §51 (Proposition 8 equivalent). Our report documents the market value as of the lien date and provides the analysis the Assessment Appeals Board expects to see.

What We Provide

  • USPAP-compliant appraisal report for appeal submission
  • Decline-in-value analysis (R&T Code §51 — California)
  • Appeal board hearing support and testimony
  • Comparable sales analysis calibrated to lien/assessment date
  • Income approach for income-producing properties
  • Analysis of assessor's comparable grid and errors
  • Expert declaration for stipulated reduction negotiations

Property Types

  • High-value residential (luxury homes, estates, multi-family)
  • Commercial office, retail, industrial
  • Hotels, hospitality, and special-use
  • Vacant and development land
  • Mixed-use and income-producing properties

California Note

California's annual lien date is January 1. Appeal deadlines vary by county — typically November 30 for the following fiscal year. Early engagement is critical. Contact us before the deadline to assess whether an appeal is supported by market data.

Our Approach

How a Property Tax Appeal Works

01

Property Review

We review the current assessed value, the property type, and the market conditions as of the applicable lien or assessment date. We provide an objective preliminary assessment of whether a material discrepancy exists between the assessed value and current market value — so you have independent market evidence before committing to an engagement.

02

Appraisal Report

We prepare a USPAP-compliant report documenting market value as of the applicable date. The report format meets the requirements of the assessment appeals board in your jurisdiction.

03

Filing & Submission

We coordinate with you or your counsel on the filing. The appraisal report is submitted as the primary evidence of value. We provide the declarant's signature and credentials documentation required by the board.

04

Hearing Support

Where a board hearing is required, William Martinez is available to present the appraisal findings and respond to questions from the board and the assessor's representative. The appraiser's role is to provide independent, objective testimony — not advocacy.

"Assessors value properties at scale. An independent appraisal values yours specifically."

Get In Touch

Appeal Your Assessment

Deadlines for property tax appeals are strict and vary by county. Contact us early — we can typically provide a market data preliminary review within 48 hours.

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