Yes, you need a permit to replace windows in Florida. Local building departments treat the removal and installation of a full window unit as permitted construction under the Florida Building Code, even when the new window is the same size and style as the one coming out. The rule exists because window installation is a life-safety matter in a hurricane state, not just a cosmetic upgrade.
When a Permit Is Required
Any time you pull out an entire window unit and install a new one, a permit is required. It does not matter whether you are swapping a single bedroom window or replacing every opening in the house. The building department has to confirm that the new product is rated for your wind zone and installed correctly.
Florida also enforces what contractors call the 25% rule. If you replace more than 25% of a home’s glazed openings within any 12-month period, every new window has to meet the current edition of the Florida Building Code. That includes impact resistance if you are in a wind-borne debris region and current energy-efficiency standards everywhere else. The threshold exists so you cannot phase a big project into small permits to escape current code.
Minor glass repair is the one real carve-out. Replacing a single cracked pane inside an existing frame counts as maintenance. Anything that changes the opening size, swaps the frame material, or upgrades to impact glass crosses back into permitted work.
What Your New Windows Must Be Rated For
Florida’s most consequential window rule is the impact-resistance mandate inside a wind-borne debris region. The code defines this zone as any area with an ultimate design wind speed of 140 mph or higher, plus coastal areas within one mile of the mean high-water line where the wind speed reaches 130 mph or higher under Exposure D conditions.1Florida Building Code. Revised Definition for the Wind-Borne Debris Region In practice that covers most of the coastline and large portions of South Florida, including all of Miami-Dade and Broward counties.
Windows in those areas have to withstand flying debris and extreme wind pressures. To prove compliance, every replacement window needs either a Florida Product Approval (FPA) number issued through the state’s product approval system or a Miami-Dade County Notice of Acceptance (NOA).2Florida Department of Business & Professional Regulation. Product or Application Search Inspectors look for that number on the product label and in your paperwork. You can verify any window’s approval status through the state’s online product search before you buy.
Even outside the wind-borne debris region, every replacement window has to carry a Design Pressure (DP) rating appropriate for your property’s wind zone. Your local building department can tell you the required DP rating for your address. Getting this wrong is one of the most common reasons applications stall: homeowners buy windows that meet generic “hurricane” marketing claims but fall short of the actual engineering requirement for the site.
Replacement windows also have to meet current energy-efficiency standards under the Florida Building Code. For the state’s southern climate zone, Energy Star–certified windows need a U-factor of 0.40 or lower and a Solar Heat Gain Coefficient of 0.25 or lower. The SHGC matters more than the U-factor in Florida’s cooling-dominated climate because a lower SHGC blocks more solar heat from entering the home.
What Goes Into the Permit Application
A complete permit package for window replacement generally includes:
- The permit application form, available from your local building department’s website or office. Most Florida jurisdictions now accept online submissions.
- Product approval sheets showing the FPA or NOA number for each window being installed. This is required regardless of project size.
- Plans or drawings. For same-size replacements in the same openings, some departments waive full architectural plans. If you are changing the size of an opening or doing structural work, you will need plans signed and sealed by a Florida-licensed architect or engineer.
- Contractor license and insurance copies, if a licensed contractor is doing the work.
- An owner-builder affidavit, if you are doing the work yourself. Florida law requires you to personally appear, sign the application, and complete a disclosure statement acknowledging responsibility for code compliance, workers’ compensation obligations, and the financial risks of acting as your own contractor.3The Florida Legislature. Florida Statutes 489.103 – Exemptions
Notice of Commencement
If the direct contract for the project exceeds $5,000, you have to file a Notice of Commencement with the county recorder’s office before the first inspection.4The Florida Legislature. Florida Statutes 713.135 – Construction Lien Law; Building Permits; Notice of Commencement A copy of the recorded notice, or at minimum the clerk’s instrument number, must be filed with the building department. Without it, inspections cannot be approved. A whole-house window replacement with impact-rated products almost always clears that $5,000 threshold.
HOA Approval
If your home is in a community governed by a homeowners association, you likely need architectural review approval before you apply for the building permit. Under Florida law, the HOA’s authority to regulate the appearance of structures on your property has to be stated in or reasonably inferred from the declaration of covenants. The board is required to adopt hurricane protection specifications, including color and style guidelines for impact-resistant windows, and must apply those standards uniformly. If your covenants give you a menu of materials or styles, the board cannot keep you from choosing among them.5The Florida Legislature. Florida Statutes 720.3035 – Architectural Control Covenants; Parcel Owner Improvements; Rights and Privileges
Fees, Timelines, and Inspections
Fees vary by jurisdiction. Some departments charge a base fee for the first opening plus a per-opening fee for each additional window. Others fold plan review fees and state surcharges into a flat rate. A straightforward same-size replacement often runs somewhere between $50 and $150, though whole-house projects with many openings will cost more.
Florida law sets firm deadlines for how quickly your building department has to act. For residential structures under 7,500 square feet, the department must approve, approve with conditions, or deny a complete application within 30 business days. Homes of 7,500 square feet or more get a 60-business-day window. If the department requests corrections, you have 10 business days to resubmit, and the department then has another 10 business days to issue a final decision.6The Florida Legislature. Florida Statutes 553.792 – Building Permit Application to Local Government
After installation, the department will schedule one or more inspections before closing the permit. Inspectors verify that the installed product matches what was approved, that fasteners are the correct size and type specified in the product approval, and that shim spacing meets manufacturer requirements. They will also check flashing and sealant to confirm the installation will keep water out. For impact-rated windows, the inspector confirms that the labels on the product match the FPA or NOA numbers on your permit. If labels have been removed or are illegible, you will need alternative documentation from the manufacturer. Do not schedule your painter or stucco contractor to cover the window flanges before the inspector signs off.
Bedroom Egress and Safety Glazing
Two code requirements catch homeowners who focus only on wind ratings.
If a window serves a bedroom, it has to meet emergency escape and rescue opening standards. The replacement must provide a net clear opening of at least 5.7 square feet (5 square feet for ground-floor windows), a minimum opening height of 24 inches, a minimum opening width of 20 inches, and a sill no more than 44 inches from the floor to the bottom of the opening. These numbers trip up homeowners who want to change styles in a bedroom, say from a double-hung to a casement or awning. The new style still has to hit the egress dimensions when fully open, and the plan reviewer will check it.
Certain window locations also require tempered or laminated safety glass, independent of any wind-borne debris requirement. Windows near doors need safety glazing if the nearest edge of the glass is within 24 inches of the door’s edge and the bottom of the glass sits below 60 inches from the floor. Standalone windows trigger the safety-glass requirement when the pane exceeds 9 square feet, the bottom edge is less than 18 inches from the floor, the top edge is more than 36 inches from the floor, and a walking surface is within 36 inches of the glass. The reviewer will flag any opening that fits those conditions and require compliant glazing.
What Happens If You Skip the Permit
Local code enforcement can issue a stop-work order the moment unpermitted construction is discovered. Each county or municipality can levy civil penalties of up to $2,000 per violation through their code enforcement officers.7Florida Senate. Florida Statutes 489.127 – Prohibitions; Penalties You will then need to apply for an after-the-fact permit, which usually costs a multiple of the standard fee. The multiplier varies by jurisdiction: some charge double, others charge up to four times the regular fee when the current homeowner did the work.
The indirect costs are often worse. An after-the-fact permit still requires an inspection, and if the windows are already finished with trim and stucco over the flanges, the inspector cannot verify fasteners, flashing, or shim spacing. At that point the department may require destructive testing or an engineer’s certification letter confirming that the concealed work meets code. If the installation fails verification, you could be looking at removal and reinstallation.
Resale and Insurance
Unpermitted window work follows the house. Florida law requires sellers to disclose known material defects, and unpermitted improvements fall into that category. A buyer’s inspector or title company will often catch the discrepancy by comparing permit records to the home’s current condition, which can derail a sale or force a price reduction to cover retroactive permitting.
Properly permitted and inspected impact-rated windows can also earn discounts on your homeowner’s premium through Florida’s wind mitigation credit system.8Florida Division of Emergency Management. Wind Mitigation Booklet Without a closed permit and a passing inspection, you have no documentation to claim that credit, and your insurer may deny a wind-damage claim entirely if the windows went in without a permit.