Do I need a permit for addition or structural alteration in Miami?
Yes. In Florida, addition or structural alteration generally requires a permit, and Miami is no exception.
A building permit is required for any addition and for structural alterations such as removing or altering load-bearing walls, changing the footprint, or altering the roof structure. The Florida Building Code only exempts ordinary minor repairs that do not cut into walls or remove load-bearing supports, so structural work is never exempt. Additions usually trigger zoning review and, in flood areas, elevation requirements.
Local and county notes for Miami
Structural work is specifically excluded from the HB 803 $7,500 exemption. Signed and sealed engineered plans are commonly required. Additions often trigger setback, lot-coverage, and floodplain review. Additions and structural alterations require plan review; the City of Miami Residential Permit Guide lists interior demolition, partial demolition, and structural work as permit categories, and only minor non-structural repairs are exempt. The entire city is in the Miami-Dade High Velocity Hurricane Zone (HVHZ), so structural and envelope work is reviewed to HVHZ wind-load standards and products may need a Miami-Dade NOA or Florida Product Approval. Work is reviewed against the Miami 21 zoning code and, in a FEMA flood zone, against the city flood regulations, so confirm zoning and flood requirements before applying. An addition is designed to full HVHZ structural standards, which normally means signed and sealed engineering and a longer plan review than elsewhere in Florida. Your city issues the permit, not the county. Miami-Dade County's own building department serves the unincorporated area, while each municipality runs its own building department, and the county Board of Rules and Appeals interprets the code across all of them.
Documents you may need
- Permit applicationLikely required
- Signed and sealed construction and structural plansLikely required
- Site plan or surveyLikely required
- Florida Energy Code forms for conditioned spaceSometimes required
- Notice of commencementSometimes required
- Building permit application filed through iBuild with electronic plan uploadrequired
- Complete set of plans signed and sealed by a Florida licensed engineer or architectrequired
- Site plan and Miami 21 zoning review documents, plus flood-zone elevation information where applicableLikely required
- Product approval or Notice of Acceptance documentation for HVHZ rated materialsSometimes required
Possible inspections
- Footing and foundation inspection
- Framing inspection, with rough electrical, plumbing, and mechanical
- Insulation inspection
- Final inspection
- Plan review before permit issuance
- Structural, framing, and trade inspections through the build
- Final building inspection scheduled through iBuild
Frequently asked questions
- Do I need a permit for addition or structural alteration in Miami?
- Yes. In Florida, addition or structural alteration generally requires a permit, and Miami is no exception. A building permit is required for any addition and for structural alterations such as removing or altering load-bearing walls, changing the footprint, or altering the roof structure. The Florida Building Code only exempts ordinary minor repairs that do not cut into walls or remove load-bearing supports, so structural work is never exempt. Additions usually trigger zoning review and, in flood areas, elevation requirements.
- Who issues the permit in Miami?
- The local building department for Miami 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.