Do I need a permit for hvac replacement or installation in Unincorporated Martin County?
Yes. In Florida, hvac replacement or installation generally requires a permit, and Unincorporated Martin County is no exception.
Replacing or installing central air conditioning or a heat pump requires a mechanical permit in Florida, and a licensed mechanical contractor generally must pull it. Only portable or window units and minor in-cabinet repairs avoid a permit. Changing amperage or fuel type adds electrical or gas review.
Local detail for Unincorporated Martin County: Permits for unincorporated Martin County. Applications submitted through the Accela Citizen Access (ACA) online permit system.
Florida and local notes for Unincorporated Martin County
The HB 803 $7,500 exemption does not cover mechanical work. Upsizing amperage or changing fuel type adds electrical or gas permits. Martin County's own permitting office is the Martin County Building Department, reachable on (772) 288-5400 at https://www.martin.fl.us/building. Its online permit portal is https://www.martin.fl.us/resources/online-permit-system. It issues permits for the unincorporated county. If your city does not run its own building department, and many smaller Florida municipalities do not, this is the office that will handle the job. A change-out is normally a mechanical permit, and gas fired equipment usually adds a second permit and a pressure test. Martin County lists heating and cooling systems as permitted work, and its HB 803 page names air conditioning and HVAC work as still needing a permit even under $7,500. The county's A/C Change Out Form is the only form required when replacing both the condenser and the air handler, and it must be filled out completely. A Notice of Commencement is needed when the cost of construction is $15,000 or more.
Documents you may need
- Mechanical permit applicationLikely required
- Contractor license and insuranceLikely required
- Equipment specifications or AHRI certificateSometimes required
- Equipment sizing calculation (some counties)Sometimes required
- Martin County Building Permit Application (Accela Citizen Access portal or permit counter)Likely required
- Martin County A/C Change Out Form, filled out in its entiretyLikely required
- AHRI form and manufacturer's specifications to verify SEER2Likely required
- Duct plans when ductwork is performedSometimes required
- Notice of Commencement for jobs of $15,000 or moreSometimes required
Possible inspections
- Mechanical or equipment change-out inspection
- Final inspection
- Mechanical inspections listed on the permit
Frequently asked questions
- Do I need a permit for hvac replacement or installation in Unincorporated Martin County?
- Yes. In Florida, hvac replacement or installation generally requires a permit, and Unincorporated Martin County is no exception. The documents and inspections sections on this page list what the building department typically asks for.
- Who issues the permit in Unincorporated Martin County?
- The local building department for Unincorporated Martin County handles permitting. This page lists its contact details and online portal. Your mailing city is not always the permitting authority, so confirm the jurisdiction before you apply.
- How do I find out the exact requirements for my project?
- Run the free PermitRoadmap check for your specific project and answers. It returns the likely permits, documents, inspections, and next steps, each linked to its official source.
PermitRoadmap is an independent informational service and is not affiliated with any city, county, state agency, or permitting authority. Results are informational and do not replace confirming requirements with the local permitting authority.