How much do property tax consultants charge?

Residential contingency arrangements commonly take 25–50% of your first-year tax savings, with no fee if there's no reduction. Flat-fee filing services and hourly attorneys or appraisers also exist. Check whether the contingency applies to one year or several.

Is it worth hiring someone to appeal my property taxes?

It depends on complexity and stakes. It's usually worth it for commercial or multi-unit property, large dollar amounts, base year value disputes, or unusual transactions. For a straightforward residential decline-in-value appeal with available comparable sales, the contingency often costs more than the work is worth.

Do property tax consultants have special influence with the appeals board?

No. Assessment appeals boards decide on the evidence. An experienced agent may present more efficiently and know local practice, but there's no access advantage — and in California the burden of proof already favors owner-occupied homeowners under §167.

Can I appeal my property taxes myself?

Yes. The application is short, the deadline is public, and the substantive work is selecting and adjusting comparable sales near the January 1 lien date. Most residential appeals are decided on that analysis rather than on legal argument.

Should You Hire a Property Tax Consultant?

Q: What should I check in a property tax agent authorization?

Its scope and duration. Some authorizations are open-ended, auto-renew, and cover future tax years, letting a firm claim a share of reductions on appeals you'd have filed yourself. Limit it to the specific parcel and tax year, and confirm what event triggers the fee — including a stipulated value from the assessor.

Solicitations arrive with your assessment notice: a firm will handle your appeal for a share of the savings, no upfront cost. Sometimes that's a fair trade. For a typical Bay Area homeowner with an over-assessed home, it usually isn't — and the reason is that the work you'd be paying for is mostly one task.

What the fee structures look like

Contingency. The common residential model: the agent keeps a percentage of your first-year tax savings, often 25–50%. No reduction, no fee. Read whether "savings" means first year only or multiple years, and whether it's calculated on tax saved or assessed-value reduction.
Flat fee. A few hundred dollars to prepare and file, win or lose.
Hourly. Attorneys and appraisers, typically on larger or contested matters.

Run the arithmetic before assuming contingency is free. On a $200,000 reduction — roughly $2,400/year in California — a 40% contingency costs you about $960. That's a lot for a service whose central deliverable is a comparable-sales analysis. (How to size your own reduction.)

What you're actually buying

An honest inventory of a residential appeal:

Task	Difficulty
Confirm your county's deadline	Trivial
Fill out BOE-305-AH	15 minutes
Select and adjust comparable sales	The whole job
File before the deadline	Trivial
Negotiate with the assessor's office	Moderate
Present at a hearing	Moderate, low stakes

Everything except comp selection is administrative. Comp selection is the part that decides outcomes — and it's a data problem, not a relationships problem. (What separates a strong comp from a weak one.)

Note also what a consultant does not do: they don't have special access to the board, and in California they can't change the fact that for an owner-occupied home the presumption already runs in your favor.

When hiring makes sense

Commercial, mixed-use, or multi-unit property. The income approach, capitalization rates, and expense normalization are genuinely specialist work, and there's no §167 presumption helping you.
A large dollar amount. If a reduction is worth $15,000 a year, paying for expertise is rational.
A base year value dispute or an unusual transaction — non-arms-length transfer, allocation between real and personal property, new construction valuation. (Base year appeals.)
A previous appeal that failed on grounds you don't understand.
You genuinely won't do it otherwise. 60% of a reduction beats 100% of a deadline you missed. This is a real reason, not a cop-out.

When it doesn't

A straightforward residential decline-in-value appeal where assessed value clearly exceeds market value and comparable sales exist.
A condo with sales in its own building — the strongest comp evidence in residential appeals, and not hard to identify. (Why condo cases are strong.)
A modest reduction, where the contingency eats most of year one.
When the firm won't tell you their comps before filing. If you can't see the analysis, you can't evaluate whether you're paying for one.

Due diligence before you sign

Check the agent authorization. The appeal application requires one for anyone who isn't a licensed California attorney. Read what you're granting: some authorizations are open-ended, auto-renew, and cover future tax years — meaning a firm keeps a cut of reductions on appeals you'd have filed yourself. Limit it to the specific parcel and tax year.

Ask five questions:

Which comparable sales will you use, and can I see them before filing?
Is the fee on first-year savings only, or multiple years?
What happens if the assessor offers a stipulated value — is that a "win" that triggers the fee?
Who appears at the hearing, and have they appeared before this board?
Does the authorization end with this tax year?

Watch for the classics: guaranteed results (nobody can promise a board's decision), pressure to sign immediately near a deadline, mailers designed to resemble official county notices, and firms that file mass appeals with no property-specific analysis — a board that sees a boilerplate filing treats it accordingly.

Don't pay for an appraisal reflexively. A full appraisal is sometimes the right call, but for most residential appeals a well-built comparable-sales analysis is what the board wants. (When you actually need an appraisal.)

The middle option

The reason contingency fees feel unavoidable is that the one hard task — assembling defensible comps near the January 1 lien date, screened on type, size, age, condition, and features, and excluding sales barred by §402.5 — used to require either expertise or hours.

That's the specific thing CompFinder does: enter your address and get the comp set and written comparison for SF, Oakland, San Jose, Seattle, or Issaquah. You keep the administrative work, which is easy, and the savings, which are not.

Either way, the decision that actually matters is filing before your county's deadline — September 15 in San Francisco, Alameda, and Santa Clara; November 30 in most of California.