Ownwell vs. Overassessed
Both can lower your California property taxes. Ownwell files for you and keeps 25–35% of what you save, every year. Overassessed preps everything for a flat $45, and you file it yourself in about 10 minutes. Here's the honest version of that tradeoff — including why you may not have to choose at all.
What is Ownwell, and is it legit?
Ownwell is a legitimate, established property tax appeal company. You sign up, they analyze your assessment, and if they think you are overassessed they file the appeal and handle the process on your behalf. They operate in California and a handful of other states.
Their pricing is a contingency fee: no money up front, and a percentage of the property tax savings they win — 25–35%, depending on your location, per their published pricing. The exact rate is shown when you sign up; California customers have reported rates at the top of that range. If they don't save you anything, you pay nothing. That savings-or-free guarantee is real, and it's a fair way to price a service where the customer does zero work.
Two things are worth understanding before you sign up. First, the fee recurs: enrollment renews automatically each year, and you owe the percentage in any year they win a reduction — including years when a soft market would have lowered your assessment anyway. Second, the work they're doing for that fee is work California's system was designed to let homeowners do themselves: every county we serve offers a free informal review where a county appraiser evaluates your comparable sales evidence, no hearing required.
You don't actually have to choose up front
Here's the part of this comparison most people miss: the two paths aren't mutually exclusive, and the cheap one is reversible. The free informal review doesn't use up your appeal rights, and it carries no downside — your assessed value goes down or stays the same. So the lowest-cost order of operations is to try it yourself first, and keep Ownwell in your back pocket.
- 1Check whether you're overassessed — free. If you're not, neither we nor Ownwell can save you anything, and you're done in 60 seconds.
- 2File the informal review yourself with our Filing Guide ($45). Same comparable-sales evidence a full-service firm would submit. About 10–15 minutes of filing. If it works — and informal reviews resolve most residential cases — you just kept 100% of your savings minus $45.
- 3If it doesn't work, hand the formal round to a pro. A denied informal review costs you nothing and doesn't prejudice a formal appeal. You can hire Ownwell (or any property tax agent) at that point — their savings-or-free model means trying the free process first costs you nothing extra with them later. Just mind your county's formal filing window: a full-service firm can only take the case while it's open.
Run in that order, the expensive option becomes the fallback instead of the default — and you only pay a percentage of your savings if the do-it-yourself round genuinely didn't get it done.
What each path costs on a $2,208/year reduction
$2,208 is the canonical example we use across this site. Your numbers will differ — the ratios won't.
| Ownwell | Overassessed | Fully DIY | |
|---|---|---|---|
| Who does the filing | They do | You do (~10–15 min with our guide) | You do (5–10 hours of research) |
| Cost model | 25–35% of savings, every year they win | $45 flat, once ($25 in later years) | Free |
| Year 1 cost at $2,208 saved | $552–$773 | $45 | $0 |
| 3-year cost if the reduction holds | $1,656–$2,318 | $95 | $0 |
| Risk if the county says no | No fee (savings-or-free) | Refund of your $45 (outcome guarantee) | Your time |
| Cancel required to stop paying | Yes — renews automatically | No — one-time purchase | — |
Ownwell figures use their published 25–35% rate range (verified 2026-06-09); your exact rate is shown at signup, and California customers have reported the top of the range. The 3-year Ownwell figure assumes they re-win the same reduction each year; actual fees depend on actual savings each year. Overassessed 3-year figure: $45 year one, then the $25 returning-customer price.
When Ownwell is the better choice
We'd rather tell you this ourselves than have you find out after paying us. Ownwell is the better fit if:
- You will not file, period. If a 10–15 minute filing task will sit in your inbox forever, a service that does it for you — even at a quarter to a third of your savings — beats a guide you never use.
- Your case is headed to a formal hearing. If the informal review fails and you want someone to represent you in front of the Assessment Appeals Board, a full-service company (or a property tax agent) does that. We don't.
- You own many properties or out-of-state property. Ownwell's monitoring model earns its keep across a portfolio. Overassessed serves California homeowners, one home at a time.
When Overassessed is the better choice
For a typical California homeowner with one home, the math is hard to argue with. The evidence Ownwell submits for you — comparable sales with documented adjustments — is the same evidence our Filing Guide hands you. The county's informal review form takes about 10–15 minutes to complete with everything prepped.
On a $2,208 reduction, that 10–15 minutes is worth $507–$728 in year one — and even more in every later year the reduction holds, since you'd pay Ownwell's percentage again and our returning-customer price is $25.
And the risk profile is closer than the “savings-or-free” framing suggests: if the county denies your appeal outright, we refund your $45.
Get a reduction or get your $45 back. Denied by the county? Email us the decision letter — we refund the $45 within 5 business days. See terms
The third option: do the whole thing yourself, free
You don't need Ownwell or Overassessed to appeal. Every California county we serve offers a free informal review: pull recent sales of homes like yours from public records or a real estate site, document how each differs from your home, fill out your county's decline-in-value form, and submit it to the Assessor's office. Budget 5–10 hours to do it credibly — most of that is learning what evidence actually works and which deadline applies in your county.
Our learn pages exist to make the free path genuinely doable. The $45 Filing Guide just collapses those hours into minutes. And if neither of us is the right fit, here's every California option compared, including the ones that aren't us.
Common questions
Yes. Ownwell is a real, established company that files property tax appeals on homeowners' behalf in California and several other states, with a savings-or-free guarantee — if they don't reduce your taxes, you pay nothing. The question isn't legitimacy, it's price: their fee is 25–35% of your savings, charged every year they win a reduction. Whether that's worth it depends on how much of the work you're willing to do yourself — in California's informal review process, the answer is usually “about 10–15 minutes' worth.”
Ownwell's published fee is 25–35% of the property tax savings they win for you, depending on your location — the exact rate is shown when you sign up, and California customers have reported rates at the top of that range. There's no upfront cost. If they reduce your bill by $2,000, you owe them $500–$700 — and because enrollment renews automatically, you pay again in any future year they win a reduction.
Usually, yes — and it's the cheapest order of operations. The free informal review with your county assessor doesn't use up your appeal rights, and a denial there carries no penalty: your value either goes down or stays the same. If the informal review doesn't get you the reduction (or you decide you'd rather not handle the formal round yourself), you can hand the case to a full-service company like Ownwell afterward. The one thing to watch is the calendar: a full-service firm can only file your formal appeal while your county's filing window is open, so don't sit on a denied informal review until the window closes.
Yes — but the burden is on you. Ownwell enrollment renews automatically each year, so they keep filing (and keep charging the contingency fee on any savings) until you actively cancel. If you only wanted a one-time appeal, set a reminder to cancel after your appeal concludes.
No. Every California county offers a free informal review: you submit comparable sales evidence to the county Assessor's office, a certified appraiser reviews it, and your assessed value either goes down or stays the same — it cannot go up through this process. The hard part is assembling credible comps with documented adjustments. That's the part you can do yourself for free, pay Overassessed a flat fee to prepare, or pay Ownwell a percentage of your savings to handle end to end.
We don't file for you, we don't represent you at hearings, and we don't monitor your assessment year after year automatically. Ownwell does all three. Overassessed gives you the complete evidence packet and copy-paste filing instructions; the 10–15 minutes of actual filing is yours. If you want a zero-effort, never-think-about-it service and you're comfortable paying a quarter to a third of your savings every year for it, Ownwell is the better fit.
Start where both paths start: is your home overassessed?
The check is free either way. Enter your address and we'll compare your assessed value to recent comparable sales in about 60 seconds.
Ownwell is a trademark of its owner; Overassessed is not affiliated with Ownwell. Ownwell pricing and terms described above reflect their published materials as of 2026-06-09 and may change — confirm current terms on their site before signing up. Overassessed provides estimates based on publicly available data and AI-generated analysis. This is not a formal appraisal, legal advice, or tax advice. Results are not guaranteed, and appeal outcomes depend on county review. Users file their own appeals.