Certificates of occupancy
A certificate of occupancy is the building department’s statement that a structure is legally fit to occupy. It is issued at completion of new construction, and again where a building’s use changes. For an existing house you are buying, you generally will not need a new one — but its original date matters more than people realise.
The CO date is the age of the building for regulatory purposes. It is what triggers a condominium milestone inspection at 30 years from the certificate of occupancy†, or 25 years if within three miles of the coastline† — so a certificate issued decades ago decides when an obligation arrives today.
When one is issued
| Situation | CO needed? |
|---|---|
| New construction | Yes — at completion, after final inspections |
| A change of use | Yes — for example a garage converted to living space |
| Substantial renovation or an addition | Often, or a certificate of completion |
| Buying an existing home | No new one — but the original should exist |
| Reoccupying after major damage | Frequently, depending on the work done |
The distinction between a certificate of occupancy and a certificate of completion catches people. Broadly, occupancy applies where the structure is being occupied, and completion applies where permitted work has been finished on an already-occupied building. Both prove the same underlying thing — that inspections were passed and the file was closed.
Why it matters to a buyer
- It establishes the age of the building for insurance, for four-point thresholds, and for condominium inspection obligations.
- Its absence on a converted space is a warning. A garage conversion or an enclosed porch with no certificate is unpermitted work by another name.
- Lenders and insurers may ask for it on newer construction, and the absence delays closing.
- It should reconcile with the county property record. A house with more heated square footage than the record shows has a story, and the certificate is where it starts.
Converting a garage or enclosing a porch changes the use of that space, which means it needs permitting and sign-off — not just construction. Plenty of Florida homes have living space that was never certified, and it surfaces at sale, at an insurance inspection, or when the next permit application prompts a review. It is the most common CO problem in residential property by a wide margin.
How to find one
- Ask the building department that issued it — city or county, depending on where the property sits. Records are public.
- Search the permit history at the same time. The two together tell you what was built, when, and whether it was closed out.
- Expect gaps on older properties. Records from before digitisation are patchy, and the absence of a certificate on a 1950s house is not the same finding as its absence on a 2015 one.
- Reconcile it against the property appraiser’s record for square footage, bedrooms and bathrooms.
If work was done without one
It is usually resolvable. Most building departments have a retroactive route, which typically means an application, a fee, and inspection of work now behind finished surfaces. This is closely related to the open permit problem — and note the protection that applies there: a local government may not deny a new permit or otherwise penalise an arm’s-length purchaser solely because a previous owner failed to close a permit†.
Do not let a seller tell you it does not matter because nobody has ever asked. The people who ask are insurers, lenders, appraisers and the next buyer — and they tend to ask at the least convenient moment.
Related
Common questions
What is a certificate of occupancy in Florida?
The building department’s statement that a structure is legally fit to occupy, issued at completion of new construction and again where a building’s use changes.
Do I need a certificate of occupancy to sell my house?
Not a new one for an ordinary resale. But the original should exist, and any converted space — a garage or an enclosed porch — should have its own sign-off, which is where problems usually appear.
Why does the certificate of occupancy date matter?
It establishes the building’s age for regulatory purposes, including insurance thresholds and condominium milestone inspections at 30 years, or 25 within three miles of the coast.
How do I find my certificate of occupancy?
Ask the city or county building department that issued it — records are public. Pull the permit history at the same time, and expect gaps on older properties where records predate digitisation.
What if a garage conversion was never certified?
It is unpermitted work by another name. Most building departments have a retroactive route, which usually means an application, a fee, and opening finished surfaces so the work can be inspected.
Certificates of occupancy are issued locally by the city or county building department under the Florida Building Code, and procedures differ between jurisdictions. Confirm the position for your own address with the department that would have issued it.