What Is a Certificate of Occupancy?
A Certificate of Occupancy (C of O) is a document issued by the NYC Department of Buildings that certifies a building's legal use and occupancy. It specifies what activities are permitted (residential, commercial, manufacturing), how many units or occupants are allowed, and whether the building meets current code requirements.
Every building constructed after 1938 is required to have a C of O. Buildings can have a final C of O (permanent) or a temporary C of O (issued for a limited period, often during ongoing construction). Some older buildings operate under a letter of no objection instead.
Why C of O Records Matter
A missing, expired, or incorrect Certificate of Occupancy can create serious problems:
- Buildings used inconsistently with their C of O face DOB violations and fines
- Lenders may refuse to finance properties without a valid C of O
- Insurance coverage may be affected by C of O discrepancies
- Buyers may discover post-closing that a building's use doesn't match its C of O
- Temporary C of O expirations can trigger vacate orders
RegWatch surfaces C of O status in every property profile, flagging potential issues so they can be addressed before they become costly problems.
C of O Lookup with RegWatch
RegWatch pulls C of O records from DOB and displays them alongside the full property profile. You'll see the occupancy type (permanent vs. temporary), legal use categories, number of stories and units, and any pending C of O applications. This information is cross-referenced with current zoning and permit data to identify potential conflicts.
What You Get with RegWatch
- C of O type (final, temporary, none)
- Legal use and occupancy classification
- Stories and unit count verification
- C of O history and amendments
- Cross-reference with zoning data
- Expiration alerts for temporary C of O
- Combined with violation and permit data
- Email alerts and PDF reports with Pro
Frequently Asked Questions
How do I find the Certificate of Occupancy for a NYC building?
Enter any NYC address into RegWatch to see the C of O status, including type (final/temporary), legal use, and occupancy classification.
Does every NYC building have a C of O?
Buildings constructed after 1938 are required to have a C of O. Older buildings may have a Letter of No Objection instead. Some buildings have temporary C of Os that need periodic renewal.
What happens if a building doesn't have a valid C of O?
Operating without a valid C of O can result in DOB violations, fines, and potentially a vacate order. It can also complicate financing and insurance.
Can I see the full C of O document?
RegWatch shows C of O status, type, legal use, and occupancy classification. For the full document, you can link directly to the DOB record.
Does RegWatch alert me when a temporary C of O is expiring?
Yes. Portfolio monitoring includes alerts for temporary C of O expirations, giving you time to address the issue before it becomes a problem.
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