Who Issues a Certificate of Occupancy After ATF Permits?

Key Takeaways

• The local building official for the city or county where the property sits issues the certificate of occupancy, not the contractor, engineer, private provider, or permit consultant.

• An after-the-fact permit does not automatically legalize work or produce a CO; it opens a review pathway that requires inspections, corrections, and final approvals first.

• Concealed work behind walls or ceilings may require as-built drawings, engineering evaluations, photos, or selective opening so inspectors can verify code compliance.

• Private providers can speed plan reviews and inspections, but the local building official still must issue the CO or certificate of completion.

• Under Florida Statutes 553.791(14), once prerequisites are met, the building official generally has up to 10 business days (2 for single or two-family dwellings) to issue the CO or identify deficiencies.

• Common delays include filing with the wrong jurisdiction, unpaid fees, unresolved zoning or fire approvals, and slow responses to plan review comments.

You finally decided to do the right thing. Maybe a buyer's inspector spotted an unpermitted addition, or a code officer left a notice on your door, or you simply want to sleep better at night. You've started the after-the-fact permit process, and now one big question is hanging over your head: who issues a certificate of occupancy after after the fact permitting, and what does it take to actually get it?

Here's the short, friendly answer. In Florida, the local building official issues the certificate of occupancy (CO). That's the person (or authorized designee) who runs plan review, enforcement, and inspections for the city or county building department where your property sits. Not your contractor. Not your engineer. Not a permit consultant. The building official makes the final call.

But there's more to the story, because an after-the-fact permit alone doesn't hand you a CO. Let's walk through how it all fits together so you know exactly what to expect in 2026.

The Short Answer: The Local Building Official Issues the CO

In Florida, the certificate of occupancy is issued by the local building official for the jurisdiction where the property is located. In practice, that means the building department of your city or county. Under Florida Statutes section 553.791, the local building official is the person responsible for regulatory administration or supervision of plan review, enforcement, and inspections, including any authorized designee.

That's true whether your work was permitted the normal way or legalized later. The process for getting the CO after an after-the-fact permit follows the same basic rule: the building department that holds jurisdiction signs off, and nobody else can substitute for them.

Here's who does and does not issue the CO:

• Local building official (city or county): Issues the CO or certificate of completion (CC).
• Contractors: Build the work and request inspections, but cannot issue a CO.
• Engineers and architects: Provide sealed drawings, letters, and evaluations that support your case, but don't issue the CO.
• Private providers: May perform certain plan reviews and inspections under state law, but the local building official still issues the CO or CC.
• Permit consultants and expediters: Prepare, file, and track paperwork, but have no authority to approve or issue anything.

What an After-the-Fact Permit Actually Does (and Doesn't Do)

An after-the-fact permit is a process for reviewing and permitting work that was already done without the required permit. It gives the building department a pathway to examine the work and decide whether it can be brought into compliance. It does not automatically legalize the work, and it does not by itself produce a CO.

Think of it like this: the after-the-fact permit opens the door. The inspections, corrections, and approvals walk you through it. The CO is the final signature on the other side.

If you're new to the concept, our guide on what after-the-fact permitting is in Florida breaks it down in plain English. And if you want the step-by-step, how to get an after-the-fact permit in Florida covers the front end of the process.

Why the Building Official Controls Occupancy

Under Florida Building Code Section 110, a building or a portion of one generally can't be occupied until the building official issues a CO. The official issues it after inspection and a finding that the applicable code and other laws enforced by the building department are satisfied.

This is a safety checkpoint, and it's there to protect you. Occupancy means people are sleeping, working, or gathering inside. The building official needs to be confident that the structure, electrical, plumbing, mechanical, and fire and life-safety elements meet code before that happens.

That's why it matters so much for after-the-fact work. If an addition, enclosed patio, garage conversion, or commercial build-out went up without inspections, the official has no record that it was built correctly. Your job (and ours, if you hire us) is to build that record.

The Steps From After-the-Fact Permit to Certificate of Occupancy

Every jurisdiction has its own procedures, but the general path looks like this:

1. Identify the right jurisdiction. Confirm which city or county building department actually controls your property. Near city lines, this isn't always obvious. Our building department lookup tool can help.
2. Document what exists. Prepare as-built drawings that show the work as it was actually constructed. See our overview of as-built drawings.
3. Get engineering support if needed. Structural, electrical, or mechanical evaluations and sealed letters often prove the work is safe and code-compliant. Learn more about engineer letters.
4. Submit the after-the-fact permit application. File plans, documents, and fees with the building department.
5. Respond to plan review comments. Reviewers may ask for corrections or more information. Quick, accurate responses keep things moving. Our revisions and resubmittals support helps here.
6. Pass required inspections. Inspectors verify the work, and any corrections must be completed and re-inspected.
7. Satisfy other approvals and fees. Zoning, fire, health, or other agency sign-offs and any outstanding fees must be handled.
8. Request the CO or CC. Once everything is in order, the building official issues the certificate.

What If the Work Is Hidden Behind Walls or Ceilings?

This is one of the most common sticking points, and it deserves a friendly heads-up. When work is completed and concealed, inspectors can't simply look at it. The local building department may require extra evidence to be satisfied the work is safe.

Depending on the situation and local procedures, that might include:

• Plans and as-built documentation of what's behind the finishes
• Engineering evaluations or sealed letters
• Photographs, material specifications, and product approvals
• Selective opening or removal of drywall, ceilings, or other finishes so an inspector can verify compliance

Exact requirements vary by jurisdiction and by the type of work. A framing addition may need very different proof than a rewired kitchen. For a deeper dive, our article on what happens during a Florida ATF site inspection explains what inspectors look for.

Certificate of Occupancy vs. Certificate of Completion

These two documents get mixed up all the time, so here's a quick comparison.

Which one you need depends on your project. A legalized addition that changes how a building is used may need a CO, while a permitted system replacement may close with a CC. Your building department will tell you which applies. We also explain related differences in certificate of occupancy vs. certificate of use.

Can a Private Provider Issue the Certificate of Occupancy?

Short answer: no. Florida Statutes section 553.791 allows owners and contractors to use a private provider for certain plan reviews and inspections, which can speed things up considerably. But the private provider does not issue the CO or CC. After the private provider's work is done, the local building official still issues the certificate.

Where private providers shine is in saving time. Instead of waiting in the county's inspection queue, you can have a licensed private provider handle qualifying reviews and inspections. 1 Contractor Solutions is a licensed private provider, so we can perform plan review ourselves when it makes sense for your project. You can read more in private provider vs. building department in Florida and our private provider inspections page.

How Long Does the Building Department Have to Issue the CO?

Good news: Florida law puts a clock on this once you've done your part. Under section 553.791(14), after a request for a CO or CC, presentation of a certificate of compliance, approval of other required government approvals, and payment of outstanding fees, the local building official generally has a limited time to act.

If the official doesn't provide a deficiency notice within the applicable period, the request is deemed granted as of the next business day, and the written certificate must be provided within 10 days after that automatic issuance. Because statutes change and local practice varies, always confirm current text and applicability with your jurisdiction.

One important caveat: those clocks start only after the prerequisites are met. There's no statewide fixed timeline for the after-the-fact permit itself. How long that takes depends on the scope and condition of the work and your local building department.

Can You Occupy the Building Before the CO Is Issued?

Generally, no. A building or portion of a building may not be occupied until the CO is issued. An open after-the-fact permit, or even an approved permit with open inspections, doesn't authorize occupancy by itself.

That said, real life gets complicated. Maybe you're already living in the home, or a tenant is operating in the space. Local departments handle these situations differently, and some enforcement actions come with specific timelines. If you're in this spot, don't panic. Talk to the building department (or have a pro do it with you) and map out a plan. Our guide on living in a home during after-the-fact permitting covers this in more detail.

Why This Matters for Different Readers

The question of who signs off on the CO shows up differently depending on who you are:

• Homeowners: You want the peace of mind that your addition, enclosure, or remodel is legal, insurable, and sellable.
• Real estate professionals and investors: A missing CO or open permit can stall a closing. Learn how to handle a home sale with unpermitted work in Florida.
• General contractors: Taking over a project or fixing a prior job means working the file through to final approval. See our support for general contractors.
• Solar companies: Legalizing an installed system may involve structural and electrical documentation before final sign-off. Our article on legalizing unpermitted solar installs explains how.
• Design and trade professionals: You may need reliable drafting, structural, or MEP engineering to support a clean submittal without staffing it in-house.

Common Mistakes That Delay the Certificate of Occupancy

After years of helping owners and contractors through this process, a few patterns come up again and again:

• Assuming the permit equals the CO. Closing the permit and getting the certificate are related but separate outcomes.
• Filing with the wrong jurisdiction. City versus county confusion can waste weeks. See which Florida jurisdiction reviews my project.
• Submitting incomplete or inaccurate as-builts. Drawings that don't match what's really there trigger rejections.
• Skipping engineering when concealed work is involved. Without evidence, inspectors may require opening walls.
• Ignoring other approvals and unpaid fees. Zoning, fire, utilities, and fees can all hold up the CO.
• Not responding quickly to review comments. Delays on your side extend the overall timeline.

If you want a closer look at related pitfalls, check out 14 CO mistakes Florida owners make with ATF work.

How 1 Contractor Solutions Helps You Reach the Finish Line

We're not a construction contractor. We're Florida's outsourced permitting department, and we work across all 67 counties and more than 400 municipalities. For after-the-fact projects, that means we handle the heavy lifting between "we have a problem" and "the CO is in hand."

Here's what that looks like in practice:

• Confirming which jurisdiction actually controls your property
• Preparing as-built drawings and permit-ready plan sets with in-house drafting
• Providing sealed structural and MEP engineering and engineer letters from our own engineer
• Filing, tracking, and coordinating plan review, then working every reviewer comment
• Coordinating inspections and closing out the permit
• Supporting your request for the CO or CC through the certificate of occupancy service

If your situation involves an expired or after-the-fact file, our after-the-fact and expired permits team takes on the files others decline. And if time is tight because of a stop work order or a closing date, the urgent permit rescue team can step in fast.

Want to see what other owners and contractors say? Visit us on Google — 1 Contractor Solutions to read reviews, and feel free to follow us on LinkedIn or follow us on Facebook for Florida permitting tips throughout 2026.

Quick Takeaways

• The local building official issues the certificate of occupancy, even after after-the-fact permitting.
• An after-the-fact permit is a process, not an automatic legalization or CO.
• Expect inspections, possible corrections, and sometimes engineering or selective demolition for concealed work.
• Private providers can speed reviews and inspections, but they don't issue the CO.
• Florida law sets response windows for the CO once prerequisites are satisfied, but local procedures vary.

You don't have to figure this out alone. The right team can tell you exactly which department controls your CO, what it will take, and then go do it. Ready to move forward? Get a free quote from 1 Contractor Solutions today, and let's turn your unpermitted work into a closed permit and a certificate you can be proud of.