March 15, 2026

What is a Certificate of Occupancy?

A certificate of occupancy (CO) is a document issued by a local government agency certifying that a building complies with applicable building codes, zoning regulations, and other requirements, and is safe for occupancy. A CO is typically required before anyone can legally occupy a newly constructed or significantly renovated building. For real estate investors, the CO is the final government approval that allows you to rent, sell, or occupy a property after construction or renovation.

Not every renovation triggers a CO requirement. Minor cosmetic work (painting, new flooring, fixture replacement) usually doesn't require a CO. Work that involves structural changes, electrical or plumbing modifications, changes to the building's use or occupancy classification, or additions that require building permits typically requires a CO before the building can be occupied.

The CO process

After construction is complete and the contractor has passed all required inspections (framing, electrical, plumbing, mechanical, final), the property owner or contractor applies for a CO. A building inspector conducts a final inspection to verify that all work meets code, all permit requirements have been satisfied, and the building is safe for occupancy. If everything passes, the CO is issued. If deficiencies are found, the inspector identifies them and the CO is withheld until corrections are made.

Why the CO matters for investors

Selling: Buyers and their lenders will verify that the property has a valid CO. A property without a required CO may fail to close because the buyer's lender won't finance a property that isn't legally occupiable. The title company may also flag a missing CO as a title issue.

Renting: Renting a property without a required CO can expose you to liability. If a tenant is injured in a building that hasn't been certified as safe for occupancy, your legal exposure is significantly greater. Some municipalities actively enforce CO requirements and fine landlords who rent properties without them.

Insurance: Insurance companies may deny claims on properties that lack required COs, particularly if the claim relates to a condition that would have been identified during the CO inspection process.

Temporary certificates of occupancy

A temporary CO (TCO) may be issued when the building is substantially complete and safe for occupancy but minor items (landscaping, final coat of paint, punch list items) remain. A TCO typically has an expiration date by which all remaining work must be completed and a permanent CO obtained. Don't let TCOs expire without obtaining the permanent CO — an expired TCO means the building technically isn't approved for occupancy.

Related

Estimate renovation scope before you start

Plan your renovation and understand what requires permits with Deal Run's property analysis tools.

Try Deal Run Free

Sign in to Deal Run

or

Don't have an account?