Do I Need a Permit to Remodel My House in Miami-Dade?

A whole-house remodel is one of the most permit-heavy projects a homeowner can take on. It usually involves a master permit for the overall scope and a stack of sub-permits for the individual trades. Filed and sequenced well, the permit package moves in step with construction. Filed reactively, it becomes the reason the project runs over.

This guide covers when a house remodel requires a permit in Miami-Dade, what a typical permit package looks like, how sub-permits interact with each other, and what to prepare before you start. It applies to full renovations, additions, and gut remodels across South Florida.

When a permit is usually required

In Miami-Dade, a whole-house remodel that involves any of the following almost always requires a permit: kitchen or bathroom renovation (see our dedicated kitchen and bathroom guides); moving or removing any wall, load-bearing or not; changing window or door openings; roofing replacement or reroof; new or relocated plumbing fixtures and drain lines; new or relocated electrical circuits, panels, or service upgrades; new HVAC or ductwork; adding square footage; converting an unconditioned space (garage, porch) to conditioned space; and any structural work — headers, beams, foundation modifications, or seismic-adjacent repairs. In practice, if the project reaches any part of the building's utilities, envelope, or structure, it needs a permit.

When a permit may not be required

Cosmetic-only work is generally exempt: paint and finishes; flooring replacement in the same footprint over an existing subfloor; cabinet doors, hardware, and non-plumbing trim; interior door replacement; and light window treatments and interior blinds. Even here, the exemptions have edges — replacing a rotted subfloor probably requires a permit, and replacing an interior door in a fire-rated wall may too.

Miami-Dade / South Florida considerations

Older homes trigger more scope than expected. Homes built before roughly 1980 often have galvanized supply lines, cast-iron drains, cloth-insulated electrical, and knob-and-tube in isolated areas. A full remodel that opens the walls almost always has to bring these systems into current code — which turns a nominally cosmetic project into a full electrical and plumbing rebuild.

Additions and roof work add the HVHZ layer. New windows and doors need product approvals, and roof replacements need current wind-load calculations and product approvals for the underlayment and covering. Homes in flood zones add elevation certificates and, for substantial improvements, mandatory elevation of the lowest floor. "Substantial improvement" in Miami-Dade means work whose cost exceeds 50% of the pre-improvement structure value — a threshold that surprises homeowners in older homes with low tax assessments.

Historic districts add design review. Coral Gables' Board of Architects and Miami Beach's Historic Preservation Board are the two most active review bodies, but Coconut Grove, Silver Bluff, and parts of the Village of Palmetto Bay have similar processes. Exterior changes and window replacements are the most common items to trigger design review during a house remodel.

Common mistakes that delay approval

The single most common problem with house remodel permits is late sub-permit filing. GCs frequently file the master permit first and wait until construction reaches each trade to file the trade permit. The result is inspections held up because the electrical or plumbing permit is still in review. Filing sub-permits in parallel with the master — or immediately after issuance — keeps the project on schedule.

The second common problem is under-scoping. Homeowners describe the project as "a light refresh" during design, and the plan reviewer flags the drawings for structural work not called out in the application. Under-scoping also creates inspection failures when the field work does not match the approved drawings. A properly scoped application, including revisions filed as scope grows, is the best way to keep the permit on the same page as construction.

A third common issue is missing product approvals — for windows, doors, roofing, and any HVHZ-regulated exterior product. The building department will not approve a plan set that lists a manufacturer without a specific product line and Notice of Acceptance. Waiting until construction to specify products is a repeat cause of delay.

Documents usually needed

A typical Miami-Dade house remodel permit package includes: a completed master permit application form; a boundary survey and site plan; a floor plan showing existing and proposed conditions; a demolition plan; electrical, plumbing, and mechanical plans; a roof plan and structural drawings if applicable; a reflected ceiling plan; an energy code compliance form; product approval documentation for exterior openings and roofing; a wind-load calculation package signed by a Florida-licensed engineer where required; contractor licensing and insurance; sub-permit applications for plumbing, electrical, mechanical, roofing, and other trades; a notice of commencement; and HOA or condo approval where applicable.

How South Florida Permit Pros can help

House remodel permitting is our core work. We coordinate the master permit and every sub-permit across Miami-Dade, Broward, and Palm Beach — sequencing filings so the permits keep pace with construction. Our team pre-checks the drawing set, files the master permit, coordinates each trade's sub-permit, tracks reviewer comments, prepares revisions, and manages inspections through Certificate of Occupancy or TCO. For homeowners in the design phase, a permit review identifies scope-driven filings early and prevents late surprises.