Certificate of occupancy
In the United States, a certificate of occupancy (also known as a use-and-occupancy certificate) is a document issued by a local government agency or building department to confirm that a building is fit for human occupation.
The procedures involved in the certificates vary according to the jurisdiction and the type of building. The most common situations in which a certificate is required include:
- Construction of a new building or structure.
- Conversion of a building from one use to another.
- Change of ownership.
- Significant alteration to a building.
There are several reasons for obtaining a certificate of occupancy, including:
- To legally affirm that the building is in a habitable condition.
- To confirm that the building has been constructed and maintained in accordance with building codes and the specifications that were submitted to the local authority before construction began.
- To confirm the building’s classification of use.
- To enable the building to be sold legally.
The certificate will not be issued until all inspection requirements have been passed and any fines have been paid in full. Inspections often focus on ensuring that the building complies with fire safety codes, installation of services has been done correctly, and the building is structurally capable of withstanding likely seismic activity, and so on.
A temporary certificate of occupancy may be obtained which provides the same rights as an ordinary certificate but for a fixed period of time, which can vary from 30 to 90 days depending on the jurisdiction that issues it. Once it expires, the building owner can re-apply for another temporary certificate if required, for example, if the building is still undergoing construction work while part has been completed and is capable of being occupied.
[edit] Related articles on Designing Buildings Wiki
Featured articles and news
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.
Change of use legislation breaths new life into buildings
A run down on Class MA of the General Permitted Development Order.
Solar generation in the historic environment
Success requires understanding each site in detail.
Level 6 Design, Construction and Management BSc
CIOB launches first-ever degree programme to develop the next generation of construction leaders.
Open for business as of April, with its 2026 prospectus and new pipeline of housing schemes.
The operational value of workforce health
Keeping projects moving. Incorporating unplanned absence and the importance of health, in operations.
A carbon case for indigenous slate
UK slate can offer clear embodied carbon advantages.
Costs and insolvencies mount for SMEs, despite growth
Construction sector under insolvency and wage bill pressure in part linked to National Insurance, says report.
The place for vitrified clay pipes in modern infrastructure
Why vitrified clay pipes are reclaiming their role in built projects.
Research by construction PR consultancy LMC published.
Roles and responsibilities of domestic clients
ACA Safety in Construction guide for domestic clients.





















