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Contracts & Legalaka: COaka: C of Oaka: occupancy permit

Certificate of Occupancy

In Plain English

The official permit from the local government certifying that a building is safe and legal to occupy.

Definition

A certificate of occupancy (CO) is a document issued by the local building authority confirming that a completed building complies with applicable codes and is safe for occupancy. It is typically required before a building can be legally used or occupied. The CO is one of the final milestones in a construction project and is often tied to final payment.

Why It Matters in Bidding

Because the CO is frequently the contractual trigger for final payment and the owner's ability to take revenue-generating possession, estimators must build the inspections, corrections, and agency lead times that precede it into the schedule and bid. A missed or delayed CO can hold up retainage release and expose the GC to liquidated damages, so the risk of last-minute code or life-safety failures should be priced and sequenced, not assumed.

Example

A GC estimating a tenant-improvement bid adds two weeks of float and a small allowance for re-inspections after learning the jurisdiction won't issue the CO until the fire marshal, health department, and accessibility reviewer all sign off.

Related Terms

Substantial CompletionFinal CompletionPunch ListBuilding Code

Frequently Asked Questions

Typically the general contractor coordinates the final inspections and applies for it, but the owner ultimately holds the CO. Bid documents and the contract should spell out which party files, who pays the fees, and which corrections fall to subs versus the GC so responsibility gaps don't appear at closeout.
A temporary CO (TCO) lets an owner occupy part of a building while limited work or inspections remain, usually with conditions and an expiration date. A final CO is unconditional. Estimators should note whether the contract allows phased occupancy under a TCO, since it affects move-in timing and cash flow.
Often yes. Many contracts tie release of final payment or remaining retainage to issuance of the CO. Because agency review and re-inspections are outside the contractor's full control, experienced estimators flag this as a schedule and cash-flow risk and confirm what specifically conditions final payment.

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