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Acronymsaka: Temporary Certificate of Occupancyaka: temporary CO

TCO (Temporary Certificate of Occupancy)

In Plain English

Permission from the building department to occupy a building before all final inspections are complete.

Definition

A Temporary Certificate of Occupancy is issued by the local building authority to allow a building or a portion of it to be occupied before all work is complete, provided that the incomplete work does not pose a safety hazard and a timeline for completion is agreed upon. TCOs are common on phased construction projects or when punch list items remain outstanding but the owner needs to occupy the space. A final Certificate of Occupancy replaces the TCO once all work is completed and inspected.

Why It Matters in Bidding

A Temporary Certificate of Occupancy lets an owner begin using or generating revenue from a building before every closeout item is finished, which can be the deciding factor in a project's financial schedule and in how teams price and stage final work. For contractors, the conditions and deadlines attached to a TCO shape buyout of remaining materials and the cost of completing deferred work. Missing a TCO date can expose a contractor to schedule pressure or owner claims tied to delayed occupancy.

Example

The retailer needs to open for the holiday season, so the building department issues a TCO for the completed tenant space while exterior landscaping is deferred to spring.

Related Terms

IBC (International Building Code)ICC (International Code Council)NTP (Notice to Proceed)

Frequently Asked Questions

A TCO allows occupancy of a building or portion of it while limited work remains, provided nothing left undone poses a safety hazard and a completion timeline is agreed. A full Certificate of Occupancy is issued only after all work passes final inspection. The permanent CO replaces the TCO once outstanding items are completed and approved.
Building officials usually require that life-safety systems — egress, fire alarm, sprinklers, and accessibility — are complete and inspected, while non-hazardous items like landscaping or minor finishes may be deferred. The TCO carries an expiration date and a punch list of remaining work. The owner must complete those items and pass final inspection before it lapses.
A TCO lets an owner occupy, lease, or open for business sooner, accelerating revenue or move-in even when minor or weather-dependent work remains. This is common on phased projects and tight retail or tenant-improvement schedules. For contractors it can relieve schedule pressure on non-critical items while still meeting the owner's beneficial-occupancy needs.

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