Certificate of Occupancy

An official document issued by a building department certifying that a building complies with all applicable building codes and is approved for occupancy and use for its designated purpose.

What is a Certificate of Occupancy?

A certificate of occupancy (CO) is an official document issued by a local building department that certifies a completed building meets all applicable building codes, zoning regulations, and other requirements, and is safe and approved for occupancy and use. A CO specifies the approved use of the building (e.g., retail, office, restaurant) and the maximum occupancy load.

When a CO Is Required

A CO is required before a new building can be legally occupied, when an existing building's use changes (even without construction), and after major renovations that require a building permit. Occupying a building without a valid CO can result in fines, orders to vacate, and liability exposure for both the property owner and tenants.

How to Obtain a CO

The CO is issued after all permitted construction work is complete and has passed final inspections by all relevant departments (building, fire, health, etc.). The final inspection verifies that the work was performed in accordance with the approved plans and that all conditions of approval have been satisfied. Any outstanding violations or incomplete work must be resolved before the CO is issued.

CO and Commercial Real Estate

The certificate of occupancy is a critical milestone in commercial real estate. Lease commencement dates, loan conversion triggers, and insurance requirements are often tied to CO issuance. Delays in obtaining a CO can have cascading financial consequences — making it essential to manage the final inspection and CO process carefully.