Meet Assessr — Appeal your assessment. Keep the savings

Finance

Assessr

Appeal your assessment. Keep the savings.

Every feature, from the first launch.

No account, no login, no cloud. Everything runs on your device and works fully offline — nothing in this post is hidden behind a wall.

What Assessr does

Assessr is the pocket workbench for the US homeowner who is about to appeal — or thinking about appealing — their property-tax assessment, and who has decided not to hand 25-50% of the savings to a contingency firm.

National Taxpayers Union Foundation puts the win rate for organized DIY appeals at 40-60%. The assessor's office accepts informal appeals; the formal Board of Equalization hearing accepts paper packets; the typical packet is three pages — a comp grid, a photo of one defect, and a one-paragraph cover letter. Almost no one builds the packet because almost no one has a calm tool that walks them through it.

Assessr is that tool. No account. No subscription. No deal where the firm keeps a third. Free.

What ships in v1:

— Property register: each parcel you own — APN, county, current assessed value, market value estimate, your purchase price, your purchase year, square footage, lot size. Multi-parcel from day one. — Comp grid: enter 3-5 comparable sales the assessor used (or didn't), with their assessed value, sale price, sale date, sqft, lot, beds, baths. Assessr computes adjusted $/sqft and ranks them automatically. — Defect log: cracked foundation, deferred roof, water damage, undersized HVAC — every reason the comp-grid alone underestimates the discount you deserve. Each defect with a photo, an estimated repair cost, and a notes field. — Evidence vault: Vision OCR (on-device) lifts text off your assessor's notice, your contractor estimate, an appraisal, a CMA — all stored locally. — Deadline tracker: every state has a different appeal window (TX May 15, IL annual, NY March 1, CA Sept 15, FL 25 days from notice). Assessr ships every one of them in the bundled state catalog. — Cover-letter outline: a calm, three-paragraph structure proven to work at informal review — context, comp argument, ask. — Appeal packet PDF: one-tap export of the comp grid, defect photos, evidence summary, and cover-letter outline into a printable packet you take to the hearing. — Tax history journal: log past assessments, past tax bills, past appeals, past results. The data point that turns a one-off appeal into a multi-year argument. — No 'Pro,' no in-app purchases, no contingency cut.

Assessr is for the homeowner who got the notice in the mail this week and has 25-90 days to respond, for the homeowner who suspects they've been overpaying for three years, and for the second-home owner whose out-of-state parcel never sees them in person.

Assessr is documentation software. It is not a licensed appraiser, a tax attorney, or your county assessor.

A look inside

Tap any screenshot to open the full-resolution version.

What's inside

Parcels — Every property you own.
Comps — Comparable sales grid with $/sqft auto-calc.
Defects — Photographed property condition issues.
Calendar — State-by-state appeal deadlines.
Packet — Appeal packet PDF export.

Why we built it

60% of US homeowners are estimated to be overpaying property tax (NTU Foundation). The county assessor sends a single notice and gives you 25-90 days to respond. Contingency firms take 25-50% of three years of savings. Existing DIY services are web-only ($49 evidence packets), Texas-only, or charge a percentage. There…

What makes it different

Assessr is the only iOS app that combines (a) a multi-parcel register, (b) a comp grid with computed $/sqft adjustments, (c) a defect log with photo evidence, (d) on-device OCR of assessor notices and contractor estimates, (e) state-by-state deadline tracking for all 50 states, AND (f) a one-PDF appeal packet — entire…

Who it's for

Freelancers, contractors, and small-business owners who want their numbers right at tax time without renting a SaaS to do it.

In one line: Appeal your assessment. Keep the savings.

Try it

See the Assessr app page for the full feature list, the info table, and support links.

Use Assessr, found a bug, or have a feature request? Comments are open below — anonymous is fine.