Commercial Tax Appeals: Office, Industrial, and Retail — Four Counties
Proposition 8 is statewide. Filing is local. We screen office, industrial, and retail in LA, Orange, Riverside, and San Bernardino — not multifamily.
By Francisco Williams, CCIM

Fig. · Assessment rolls and market evidence often diverge. The gap has to be proven by county.
California property tax starts with Proposition 13: a base-year value that generally grows by a limited annual factor. Proposition 8 (decline in value) is the temporary exception. When the current market value of a property as of the lien date (January 1) is less than its factored base-year value, the assessor may enroll the lower value for that year.
That is the legal frame. The business frame is simpler: if the roll still prices your building like a prior peak while the market does not, you may have a case worth reviewing.
Which assets we will screen
Office. Multi-tenant and single-tenant office where vacancy, sales evidence, or functional obsolescence support a market value below the roll.
Industrial. We do not assume every warehouse is over-assessed. We screen when vacancy, obsolescence, or comparable sales show real decline.
Retail. Dark boxes, lease roll, credit loss, and strip vacancy can create assessment gaps — especially when the roll was set in a stronger leasing environment.
Geography
We service commercial screens in:
* Los Angeles County * Orange County * Riverside County * San Bernardino County
Each county has its own Assessor, informal review path, and Assessment Appeals Board calendar. A screen that works as research in one county still has to be filed under that county’s rules and deadlines.
What we will not do
We will not market multifamily or apartment tax appeals as a WCA product. We will not quote average savings percentages on a website. We will not invent a filing deadline for Orange, Riverside, or San Bernardino without checking the live county page for that season.
How a screen works here
1. You send address, county, APN if known, asset class, approximate SF, occupancy, and the assessed value from your tax bill. 2. We pull public-record context and compare it to market evidence we can defend. 3. You get a plain-language read: pursue informal review / formal appeal coordination for your county, or hold and re-screen next cycle. 4. Filing and hearing mechanics may be coordinated with a specialized appeal partner who covers that county. The relationship and the judgment stay with WCA.
Los Angeles County owners: the Assessor’s Decline-in-Value Review path is documented on the LA County Assessor site (commonly a summer-to-fall window for the fiscal year beginning July 1 — re-verify every year before you file).
This is not tax, legal, or appraisal advice. It is how we think about commercial assessment risk as brokers who already live in the comps and the capital stack across these four counties.
If you own office, industrial, or retail in LA, OC, Riverside, or San Bernardino County and the roll feels disconnected from the market, start with a screen.
Sources
- California State Board of Equalization — Decline in Value (Proposition 8): https://www.boe.ca.gov/proptaxes/decline-in-value/
- LA County Assessor — Decline-in-Value: https://assessor.lacounty.gov/tax-relief/decline-in-value
- County process cards on /tax-appeals (confirm live assessor pages each season).