Comparison Cook County

How we stack up.

Straightforward comparisons. No cherry-picked wins. Where a competitor does something better, we say so.

Ten-year cost on a $1,200/yr reduction
Censum $199 · one time
$199
Ownwell ~30% × $1,200 × 10 years
$3,600
Ownwell (35%) high-end contingency bracket
$4,200
DIY your time, no fee
$0

Assumes a typical $1,200/yr reduction that holds for ten years. Ownwell's 25–35% contingency recurs annually until the reduction erodes. Censum charges once. DIY is free if you do the analysis yourself — this comparison is about cost, not effort.

Model precision (top decile vs 2024 BOR)
Censum 86.1%
Ownwell / TaxProper Not published
Does it show its math?
Censum — top-3 model drivers + comps in every packet
Ownwell — black-box "we'll file it" pitch
TaxProper — partial explainers (winding down)
DIY — you write the argument yourself
Censum
Ownwell
TaxProper
DIY
Pricing
$39 / $99 / $199 flat
25–35% of savings, every year
$149 flat (legacy)
Free
Keeps a cut of savings
No
Yes — ~30%, forever
No
No
Shows its math
Top-3 model drivers + comps
Black box
Partial
You write it
Built for Cook County
1.58M-PIN Cook-calibrated AVM
Generic, 30+ states
Never scaled in Cook
Model precision (top decile)
86.1% vs 2024 BOR
Not published
Not published
Guarantee
Credit-forward on Tier A
"No savings, no fee" (but long-tail contingency)
Refund (in flux post-acquisition)
Attorney filing option
Concierge +$79 (IL-licensed)
Bundled, opaque
Bundled
Hire separately
Free PIN check
Yes — full summary, no email
Email-gated estimate
Email-gated
Public records
Operating status (Cook)
Active
Active
Winding down (Opendoor)
Always open
vs Ownwell
30% forever vs $199 once.

On a $1,200/year reduction, Ownwell takes $300–420 per year. Ten years of that reduction = $3,000–4,200 paid to Ownwell. Censum collects $199 once. Math favors flat.

Credit where it's due: Ownwell operates in 30+ states. If you don't live in Cook, they're a reasonable option.

vs TaxProper
Acquired and winding down.

TaxProper was acquired by Opendoor and the consumer appeal product is being wound down. Its Cook County coverage never operated at scale. If you're weighing TaxProper, verify they're still accepting Cook filings for your window.

Credit where it's due: TaxProper's methodology writeups were among the best in the space.

vs DIY
Free, if you enjoy CSVs.

Cook County lets any homeowner file their own appeal at zero cost. The hard part isn't the form — it's picking comparable properties and writing a defensible argument. That's what the evidence packet does.

Credit where it's due: if you're analytical and patient, DIY is genuinely viable. We'll still show you the score for free.

When Censum is not the right call
  • You don't own property in Cook County. We're Cook-only through 2026. Texas + Ohio are on the roadmap.
  • Your property is commercial, industrial, or vacant. Our current model scores residential PINs.
  • Your model score is below tier threshold. We won't sell you a packet if the evidence isn't there.
  • You want hand-holding through a hearing. Hire an attorney directly, or add our Concierge service.
Check your PIN free

No email required for the free summary.