Property tax grievance

Your property tax might be too high.

Check real public assessment records in seconds — then download a ready-to-file appeal, free.

Now covering 79 counties across New York, New Jersey, and California

New York (57 counties)

Albany, Allegany, Broome, Cattaraugus, Cayuga, Chautauqua, Chemung, Chenango, Clinton, Columbia, Cortland, Delaware, Dutchess, Erie, Essex, Franklin, Fulton, Genesee, Greene, Hamilton, Herkimer, Jefferson, Lewis, Livingston, Madison, Monroe, Montgomery, Nassau, Niagara, Oneida, Onondaga, Ontario, Orange, Orleans, Oswego, Otsego, Putnam, Rensselaer, Rockland, Saratoga, Schenectady, Schoharie, Schuyler, Seneca, St Lawrence, Steuben, Suffolk, Sullivan, Tioga, Tompkins, Ulster, Warren, Washington, Wayne, Westchester, Wyoming, Yates

New York City's five boroughs run a different system (NYC Dept. of Finance/Tax Commission) and aren't covered yet.

New Jersey (21 counties)

Atlantic, Bergen, Burlington, Camden, Cape May, Cumberland, Essex, Gloucester, Hudson, Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean, Passaic, Salem, Somerset, Sussex, Union, Warren

California (1 county)

Alameda

Proposition 13 rules apply — a different kind of appeal (decline-in-value) than NY/NJ.

👆 Search your address above to get started.

How this actually works (worth reading once)

Three different numbers, not two. Assessed value is the county's own number, used only to calculate your bill. Your tax bill is just assessed value × tax rate — a high or rising bill by itself proves nothing; it's not a valid appeal ground on its own. Market value is what the house would actually sell for — nobody but you (or an appraiser) knows this; it isn't a government record anywhere.

Why we still ask for a number we don't already have. We can show you the real assessed value automatically. What we can't know without you is your market value — that's the whole comparison an appeal makes. Some jurisdictions have enough real comparable-sale data that we can suggest one for you; where they don't, it's a real number only you (or an appraisal) can supply.

Assessed value ≠ market value, on purpose. In NY, assessed value is often a tiny fraction of market value by design (an "equalization rate" — a $931 assessed value on a real home is normal, not a typo). In NJ, it's meant to be closer to 100% but rarely exactly matches. In CA, it's frozen near your purchase price and grows at most 2%/year (Prop 13) — unrelated to what the house is worth today. That's why we never compare your raw assessed value to market value directly — we convert through the real ratio first.

What actually wins an appeal. Three real grounds, recognized across jurisdictions: your assessment is out of line with comparable properties (unequal assessment), it's above your real market value (overvaluation), or the assessor's own description of your property is wrong — incorrect square footage, bedroom count, or lot size (a property description error). We help with the first two automatically; the third is worth checking yourself against your own assessment record.