Closings glossary

Certificate of Occupancy (C of O)

The Department of Buildings document that fixes a building's legal use and occupancy. Lenders and title companies read it to confirm the property can lawfully be used the way it is sold.

What is a Certificate of Occupancy?

Quick Answer

A Certificate of Occupancy is the Department of Buildings document stating a building's legal use and occupancy: how many dwelling units it may contain and what each floor may be used for. When actual use does not match the C of O, the mismatch is a defect in the building itself.

The full definition

The Department of Buildings document that fixes a building's legal use and occupancy. Lenders and title companies read it to confirm the property can lawfully be used the way it is sold.

Also called: C of O, CO.

Which related terms should you know?

These are the terms that come up alongside certificate of occupancy (c of o) in the same file.

TCO (Temporary Certificate of Occupancy)
A Certificate of Occupancy issued for a limited period while construction is completed. Renewals are routine, but a lapse stops closings until the new one is issued.
Letter of No Objection
A DOB letter confirming the lawful use of a building constructed before Certificates of Occupancy were required. It stands in for a C of O on many older buildings.
Violation (cited against the premises)
An agency record that a condition at a property does not comply with a code or rule. It attaches to the premises and follows the property through a sale.
Open permit
A DOB permit filed for work that was never signed off. Closing it usually means a licensed professional filing for inspection or formally withdrawing the job.
BIN (Building Identification Number)
A seven-digit Department of Buildings number identifying one building. A single tax lot holding a main house and a rear structure carries a separate BIN for each of them.

Where does certificate of occupancy (c of o) come up in a New York City closing?

A Queens house is marketed as four units while the C of O says three, so the lender declines until the use is corrected or the C of O is amended.

What else should you read before closing?

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Legal Disclaimer: This page is general information about New York practice. It is not legal advice, it does not account for the terms of any particular contract, building or transaction, and reading it does not create an attorney-client relationship. This is attorney advertising. Prior results do not guarantee similar outcomes.