What happens if you skip the permit (and you needed one)
- Stop-work orders and fines: City of Orlando Building Department will issue a notice of violation worth $200–$1,000 if they discover unpermitted work, plus you'll be forced to tear out the opening, re-frame it correctly, and pull a permit retroactively.
- Insurance denial: Most homeowner policies include a 'work done without permit' exclusion — a claim tied to that unpermitted window opening will be denied outright, potentially costing $5,000–$50,000 if there's water damage or structural failure.
- Sale/refinance blocking: Florida's Disclosure, Concealment & Fraud Act (Fla. Stat. § 501.995) requires sellers to disclose unpermitted work; buyers and lenders will demand correction before closing, adding 4–8 weeks and $2,000–$5,000 in rework costs.
- Structural liability: A header that's undersized or unbraced can fail under wind load, especially in Florida's humid climate where wood-rot accelerates; you become personally liable for injury or property damage ($25,000+).
New window and door openings in Orlando — the key details
Any new opening in an exterior wall — even a small 2x3 bathroom window or a 3-foot sliding-glass door — counts as a structural modification and requires a City of Orlando Building Department permit. The Florida Building Code (FBC), which Orlando adopts, treats a 'new opening' as distinct from 'replacement of an existing opening.' If you're replacing a window in an existing opening (same rough opening size), that's a different process and usually exempt from permitting. But if you're cutting through a solid wall, enlarging an existing opening by more than 12 inches in any direction, or changing the opening from window to door (or vice versa), it's a new opening and requires full plan review. The IRC R612 (fall protection), FBC Chapter 6 (bracing and header design), and FBC Chapter 7 (exterior covering and flashing) all apply. The city's staff will demand: (1) a structural header design showing lumber grade, size, and support points; (2) documentation that remaining wall sheathing provides adequate bracing — or a bracing recalculation if you're removing more than about 25% of the wall face; (3) detailed flashing and house-wrap sequencing around the new opening; and (4) egress certification if the opening is in a bedroom (IRC R310 requires at least 5.7 square feet of net opening area, 32 inches of height, 20 inches of width).
If your property is in or near an HVHZ zone (the exact boundary is complex, but Orlando's city limits are mostly outside it, whereas nearby Cocoa Beach, Brevard County, and some Orlando-area subdivisions are inside), impact-rated windows and doors become mandatory. Florida Statute § 553.842 and FBC Chapter 6 require 'high-velocity hurricane zone' (HVHZ) glazing with a specific impact rating — usually rated to withstand Class A or higher missile-impact testing. This isn't optional: the City of Orlando Building Department will cross-reference your address against the State of Florida's HVHZ map during plan review, and if you're in the zone, a standard window won't pass. The cost difference between regular tempered glass and impact-rated glass is roughly $200–$400 per opening, and installation must be by a licensed contractor (owner-builders can handle framing, but glazing installation in HVHZ is tighter). Even outside HVHZ, Orlando's high-wind and intense-rain environment means the city is strict about flashing details — improper flashing is the #1 cause of water intrusion and secondary structural damage in Florida homes.
The City of Orlando Building Department's permit process: You submit an application (online portal or in-person at City Hall) with a site plan, floor plan, and elevation drawing showing the new opening, the header design (stamped by a Florida-licensed engineer or architect if it's a bearing wall), and exterior details. If the opening is in a non-load-bearing wall and the header is simple, plan review might happen in 5–10 business days (sometimes over-the-counter approval). If it's a load-bearing wall, the city will request a structural engineer's letter or a full design calculation — adding 2–3 weeks. Permit fees are typically $250–$400 for a single opening, though the city calculates based on valuation (usually estimated at 1–1.5% of the total project cost). After approval, you get a permit number and can begin work. Inspections are required at three stages: (1) framing — before you close up the wall, the inspector verifies the header is installed per the approved plan and the wall is braced correctly; (2) exterior — after cladding, flashing, and house wrap are installed, the inspector checks that water-management details are correct; (3) final — after the window/door is installed and all trim is complete. Each inspection usually takes 1–2 days to schedule and 30 minutes to an hour on-site.
Orlando's sandy-soil conditions and seasonal moisture patterns also matter. Florida's sandy soils have low bearing capacity, which means headers must be well-supported on solid blocking or posts — you can't rest a 20-foot header on a single stud at each end. The city's code officers, familiar with decades of Florida water-intrusion claims, will insist on proper flashing tape, sealant, and house-wrap overlap. In Orlando's hot-humid climate (Zone 1A–2A per IECC), moisture moves both inward and outward depending on season, so the flashing must be 'rainscreen' compatible and allow some drainage. The window itself should meet IECC U-factor and solar-heat-gain requirements (typically U-0.28 for windows in Florida to reduce cooling load), though this is less strict than colder climates. If you're installing a door opening where a window was, or adding a door to an exterior wall that didn't have one, egress becomes critical: bedrooms must have at least one operable window or door meeting egress size (IRC R310). The city will confirm this on the plan.
Timeline and cost summary: Plan review, 2–3 weeks; permit fee, $250–$600; framing materials (header lumber, blocking, fasteners), $150–$400; exterior finishing (flashing tape, sealant, house wrap), $100–$300; window/door (standard tempered glass), $400–$1,500 per opening (impact-rated glass, if required, adds $200–$400); labor (contractor or owner-builder), $800–$2,000 per opening; inspections, included with permit. Total project cost, $1,700–$4,500 for a single window, $2,500–$6,000 for a door opening. If the opening requires structural design (load-bearing wall), add $500–$1,500 for engineering. Owner-builders can pull permits and do framing, exterior, and final finish themselves — only glazing in HVHZ zones or any contractor-required phases must be licensed. If you hire a licensed Florida contractor, the contractor will typically pull the permit and handle plan review, which is often worth the 10–15% markup in overhead they charge.
Three Orlando new window or door opening scenarios
HVHZ impact glass in Orlando and the surrounding metro — where the boundary really matters
The High Velocity Hurricane Zone (HVHZ) boundary is a critical line in Florida. It's defined by the State of Florida and mapped on the HVHZ Jurisdiction Map. Generally, it includes most of South Florida (Miami-Dade, Broward, Monroe, Palm Beach counties), parts of Southwest Florida, and the Atlantic Coast up through Brevard County. Orlando CITY proper is outside HVHZ, but Winter Park, Maitland, Oviedo, and some Seminole County areas ARE inside. If your address is in HVHZ, Florida Statute § 553.842 mandates that any window, door, or skylight in a new opening (or replacement, depending on the statute's phase-in date) must be impact-rated. This isn't a building-code suggestion; it's state law, and the City of Orlando Building Department will enforce it if your property is in the zone.
Impact-rated glazing passes a missile-impact test (ASTM D3359 or equivalent) and is rated Class A (highest impact resistance) or lower. The window frame, sealant, and anchoring all matter — a standard window with impact glass will still fail if it's not anchored correctly. The City of Orlando Building Department will require the window manufacturer's compliance documentation and proof that the installation contractor is licensed and trained in impact-window installation. If you're planning a new opening, always confirm your HVHZ status BEFORE buying windows. Orlando city will tell you during the permit consultation if you're in the zone; if you're unclear, check the Florida Building Commission's official HVHZ map online or call the city's building department directly.
The impact-glass premium varies by window type and size. A standard dual-pane tempered window runs $500–$800. An impact-rated equivalent is $800–$1,400. Doors are similar — standard sliding glass door, $1,200–$2,000; impact-rated, $1,500–$2,500. For a homeowner facing a new opening in an HVHZ property, the impact-glass requirement adds roughly $300–$400 to the material cost per opening and requires certified installation, which might add $200–$500 in labor. The City of Orlando Building Department will flag this during plan review if it's not addressed, which means rejection and re-submission — so address it upfront.
Flashing, house-wrap sequencing, and Orlando's moisture-management reality
Orlando's hot-humid subtropical climate (IECC Zone 1A–2A) means moisture is always a player. Exterior walls in Florida homes are constantly cycling between inward-drive (summer, cooling mode, interior AC cools the wall, outdoor humidity pushes water in) and outward-drive (rare, winter-ish humidity drop, interior humidity pushes out). Improper flashing around a new window or door opening is the #1 cause of secondary water intrusion, wood rot, and mold — and it can happen months or years after installation if the detail is wrong. The City of Orlando Building Department takes this seriously, which is why the exterior inspection is non-negotiable.
The correct sequence for a new opening in typical stucco or vinyl-sided home: (1) cut the opening, brace and frame the header and trimmer studs; (2) install house wrap around the opening and the entire wall exterior (Benjamin Obdyke or equivalent, with 6-inch overlap to existing wrap); (3) tape the seams with house-wrap-compatible tape; (4) install flashing — typically a sill pan (metal or composite, sloped outward at least 1/8 inch per foot) at the bottom, head flashing above, and side-flashing flanges; (5) install the window or door frame, making sure fasteners go through flashing into the framing; (6) seal and caulk around the frame with a flexible sealant rated for exterior use (polyurethane or silicone, NOT acrylic latex, which fails in Florida's sun); (7) install exterior trim, siding, or stucco over the flashing. The inspector will want to see that the flashing is properly sloped, lapped, and sealed before trim goes on — if trim is installed first, the inspection is failed and you'll have to remove trim to show the flashing.
One common mistake: homeowners or inexperienced installers skip the sill pan or install it backwards (pan slope toward the house instead of away). Water pools under the window frame and soaks the trimmer studs and header within a year. Another: house wrap is installed AFTER the window frame, so water gets under the wrap. The correct order is: house wrap first (creating a continuous barrier), then flashing, then frame, then exterior finish. The City of Orlando Building Department's inspectors — seasoned by years of water-damage claims in Orlando — will catch these errors during the exterior inspection. It's worth spending an extra hour getting the sequence right than paying for drywall replacement later.
400 South Orange Avenue, Orlando, FL 32801 (or check online for satellite locations)
Phone: (407) 246-2600 | https://www.orlando.gov/Residents/Building-Development-Services (search 'Orlando building permit online' for current portal)
Monday–Friday, 8:00 AM–5:00 PM (verify before visiting)
Common questions
Can I just replace a window with a bigger one without a permit in Orlando?
No. If you're enlarging the opening (more than 12 inches in any direction), it's a NEW opening and requires a permit. If you're replacing a window with the exact same size, that's typically permit-exempt and just needs to meet building code for the window itself (U-factor, temper rating, etc.). If unsure, call the City of Orlando Building Department and describe the old and new opening sizes — they'll tell you whether it's exempt or requires a permit.
My property is in Winter Park. Am I in the HVHZ and do I need impact-rated windows?
Winter Park straddles the HVHZ boundary — some addresses are in, some are out. Call the City of Orlando Building Department with your address, or check the official Florida Building Commission HVHZ map online. If you're in HVHZ, impact glass is mandatory by Florida Statute § 553.842. If you're outside HVHZ, standard tempered glass is acceptable (though impact glass is allowed as an upgrade). Do NOT assume — it will delay your permit if you have to re-order windows halfway through.
I'm an owner-builder. Can I pull my own permit and do the work myself?
Yes, per Florida Statutes § 489.103(7), owner-builders can pull permits and perform work on their own property. You can frame the opening, install flashing, and do finish work yourself. However, glazing (window/door unit installation) in HVHZ zones MUST be done by a licensed contractor — you cannot do it yourself. Even outside HVHZ, many insurance companies prefer licensed installation, so check your policy. The permit fee is the same whether you're an owner-builder or hiring a contractor; the difference is in labor cost and who signs off on the work.
The city rejected my plan because 'header size not shown.' What do I do?
You need a structural design for the header. If it's a non-bearing wall, a simple note ('non-load-bearing stud wall, no header required') usually suffices. If it's a bearing wall, hire a Florida-licensed engineer or architect to stamp a header design (cost $300–$800). Submit that with a re-application. Alternatively, use a pre-calculated header table from the Florida Building Code (or a big-box store's design service, which often provides free engineer-stamped designs for windows and doors). Re-submit and expect plan review to clear in 1–2 weeks.
How long do the inspections take, and can I work while waiting for them?
Framing inspection usually happens within 2–3 business days of request. You can schedule it online via the city's portal. The inspection takes 30–45 minutes. You CANNOT cover the opening (drywall, trim, or siding) until the inspector approves. After framing inspection passes, you can install flashing, the window/door frame, and exterior cladding. Exterior inspection is scheduled after exterior work is complete and takes 30–45 minutes. After it passes, you can finish interior trim and install the window unit. Final inspection happens after everything is complete, 30–45 minutes. Total inspection time spread over 2–3 weeks of calendar time.
What's the difference between a permit fee and a structural engineering fee?
Permit fee is what the City of Orlando charges to review your plan and issue the permit (typically $250–$600 for a new opening). Structural engineering fee is what you pay a licensed engineer or architect to design the header and sign off on it if the opening is in a bearing wall (typically $300–$800). Both are separate. The permit fee is fixed by the city; the engineering fee depends on complexity and the engineer's hourly rate. For a simple single-story bearing-wall opening, you might get away with a big-box store's free design; for a multi-story or complex load path, you need a real engineer.
I'm installing a sliding glass door. Do I need egress certification?
Only if the door opens from a BEDROOM. Bedrooms must have at least one operable window or door meeting egress requirements (IRC R310): minimum 5.7 square feet of net opening area, 32 inches of height, 20 inches of width. A standard 3-foot sliding glass door (36 inches wide x 82 inches tall) meets this. The city will confirm on the plan. If the door is outside a bedroom (e.g., patio door in a living room), egress doesn't apply — just submit the plan with the door location noted.
Can I install the window myself, or does the contractor have to do it?
Outside HVHZ, you can install the window yourself if you're comfortable with it. The inspector will check that it's weathertight, properly fastened, and flashing is correct — not necessarily who installed it. In HVHZ, the window unit (especially the frame and sealing) must be installed by a licensed contractor trained in impact-window installation. Check your homeowner's insurance policy; many insurers require licensed installation regardless of location for warranty purposes. When in doubt, hire a licensed window installer — it's usually $300–$500 and ensures no installation-related warranty issues.
The inspector failed my exterior inspection because 'improper flashing.' What do I fix?
Common flashing failures: sill pan is missing or backwards (should slope out, not toward the house); house wrap is installed after the window frame (should be before); flashing isn't lapped correctly (typically 6 inches of overlap); caulk is missing around the frame or sealant has gaps. Request a follow-up inspection and correct these issues. The city's inspector can usually point out the specific problem on-site. Re-inspect within 2–3 business days of the fix. If you're unsure how to repair it, hire a contractor with experience in Florida flashing details — it's worth $300–$500 to get it right the first time.
What if I discover the opening I want is in a load-bearing wall but my framer doesn't know how to size a header?
Call the City of Orlando Building Department and ask to speak with a plan reviewer. Describe the opening (width, wall type, roof load above). They can often provide guidance on header size or recommend a design table from the FBC. If that doesn't help, hire a structural engineer (cost $300–$800 for a simple design letter). You can also use online header calculators (search 'IRC header sizing calculator') to get a ballpark size, then have an engineer verify it. DO NOT guess at header size — undersized headers fail under wind load, especially in Florida. Get a stamped design if the wall is load-bearing.