Certificate of Occupancy vs. Permit

A permit authorizes construction to begin; a Certificate of Occupancy confirms it was completed correctly and the building is legal to occupy.

A building permit and a Certificate of Occupancy (CO) are two distinct milestones in the construction lifecycle. The permit is issued before work begins and authorizes the project; it does not certify that the work was done correctly. The CO is issued after all required inspections pass and certifies that the completed structure is safe, code-compliant, and legally ready for occupancy. A project can have an open permit with no CO for months or years — a sign of stalled construction. Some jurisdictions issue a Temporary Certificate of Occupancy (TCO) when a building is substantially complete but minor items remain.

Why it matters for contractors

Monitoring the gap between permit issuance and CO issuance reveals stalled projects, phased construction, and active job sites where subcontractors are still being engaged.