What Is a Certificate of Occupancy? (A Homeowner's Guide)

A certificate of occupancy, often called a CO, is an official document issued by a local building authority that confirms a structure or remodeled space has been inspected, meets all applicable building codes, and is legally approved for use. For residential remodeling projects, a CO is typically required when the scope of work includes additions, structural changes, or major system upgrades that required a building permit.

At Phoenix Home Remodeling, every project that requires a permit is managed through to final inspection and CO issuance. We do not hand a project over to a homeowner until the city has signed off.

Because without it, your remodeled space may not be legally usable, insurable, or sellable. A CO is the building department's official confirmation that the work was done correctly and inspected. If your contractor completed work that required a permit but never finalized the permit or obtained a CO, you have unpermitted work, a problem that can surface when you try to refinance, sell your home, or file an insurance claim.

Unpermitted work discovered during a home sale can kill a deal, require expensive remediation, or expose you to liability for work that was done incorrectly and never inspected.

Requirements vary by jurisdiction, but a CO or final inspection sign-off is typically required when the project involves:

• Additions to the home's footprint or square footage
• Structural changes such as removing load-bearing walls
• Converting a garage, basement, or accessory space to livable area
• Adding a new bathroom or bedroom
• Major electrical, plumbing, or HVAC upgrades that required permit pulls

Not always. On permitted projects, a licensed contractor should pull the permit, schedule inspections, and follow through to final sign-off. But some contractors hand off to the homeowner after construction ends and leave the permit open. Ask directly whether permit closure and final inspection are included in their scope and confirm it in your contract.

You inherit the problem. Unpermitted work discovered after purchase may require you to open walls, redo work to current code standards, and pay for inspections out of pocket, even though you did not do the work. Always verify permit history through the local building department before purchasing a home with recent renovations.

• Will you pull all required permits for this project?

• Is scheduling and passing final inspections part of your scope?

• Will I receive documentation showing the permit is closed after the project?

• What happens if the inspector requires corrections after the final walkthrough?

See also: Building Permit, Construction Sequencing, Rough-In, Scope of Work, Punch List