How do I file Form TC108 for a NYC Class 1 home?
How do I file Form TC108 for a NYC Class 1 home?
Form TC108 is the NYC Tax Commission's valuation-claim application for all Tax Class 1 properties (1-3 family homes), filed by the March 15 deadline to challenge the market or assessed value on your Notice of Property Value.
If you own a 1-, 2-, or 3-family home in New York City, Form TC108 is your application to challenge your assessment with the NYC Tax Commission. It is the Class 1 counterpart to Form RP-524 used in the rest of the state.
What TC108 covers. TC108 is the valuation-claim application for all Tax Class 1 properties. You use it to claim that the Department of Finance's market value or assessed value on your Notice of Property Value (NOPV) is too high, or that an error exists. (Condo units in Class 2 or 4 use TC109 instead.) Download the current form and instructions: TC108 (2026).
The deadline. For Tax Class 1, the Tax Commission must receive TC108 by March 15. Deadlines cannot be extended, so do not wait — the NOPV arrives around January 15, giving you roughly two months. See Challenging Notice of Property Value.
What to put on it. State your claimed market value and the basis — typically comparable sales of similar nearby 1-3 family homes, or a factual error in the property description (wrong square footage, lot size, building class). Because NYC Class 1 assessed value is capped (see the NYC effective-market-value question), the most effective claims usually attack the underlying market value or a data error.
After filing. The Tax Commission may offer a hearing or review the application on the papers and issue an offer or determination. If you accept an offer, the value is corrected; if you are denied, you may escalate to SCAR (since a Class 1 home is owner-occupied 1-3 family) for a $30 fee, or to an Article 7 proceeding. Filing TC108 on time preserves those rights.