Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Custom & Geometric Windows Across Coral Gables
Custom and geometric windows in Coral Gables are not a stock-item job. Every arched casement, radius corner, trapezoid, and oversized opening in this city sits inside two separate approval systems: Miami-Dade’s High Velocity Hurricane Zone code and Coral Gables’s own Board of Architects review. That’s exactly why homeowners here call Winslow Windows & Doors. We plan both tracks before you sign anything, so your windows don’t sit uninstalled for two months waiting on a resubmission. Call (727) 604-9322 and you’ll get a real person, not a voicemail tree.

Ed Winslow’s name is on the door, and on every job we do. We’ve built the workflow that Coral Gables actually demands: pre-staged Board submittals, HVHZ-compliant sizing, and clear pricing before the first cut.
Why Winslow Windows & Doors Is Coral Gables’s Preferred Custom & Geometric Windows Company
Most window companies treat Coral Gables like any other Miami-Dade zip code. That’s a costly mistake here. The Board of Architects reviews every exterior window replacement on residential structures, and they reject plenty of perfectly strong impact windows because the divided-light profile doesn’t match the original Mediterranean Revival design. We’ve sat through enough of those meetings to know exactly what gets approved and what gets sent back.
Our reputation in Coral Gables comes from jobs that cleared both reviews on the first submittal. Homeowners on Sunset Drive, in the Biltmore area, and over near the Granada golf course have called us after another contractor got a permit denial. We don’t resell that moment as a sales pitch. We just fix the drawings and get the job back on schedule.
When you call us from Coral Gables, a live person answers 24/7. Our technicians are background-checked, uniformed, and they’ll know the difference between a 1920s steel casement and a 1970s CBS opening before the truck pulls up.
Our Custom & Geometric Windows Services in Coral Gables
We recommend reading our full Custom & Geometric Windows service breakdown, but here’s what matters most for Coral Gables specifically.
Custom Impact Windows
Every replacement window in Coral Gables must carry a current Miami-Dade Notice of Acceptance, even an interior courtyard unit that never sees the street. We size each opening for the design pressure on that specific elevation, not the floor plan average. A window on the east side of a house near Biscayne Bay takes a different wind load than one on a sheltered north wall. That calculation changes the frame depth, laminate thickness, and anchoring schedule. We do it per opening, every time.

Arched & Curved Windows
Arched windows are where Coral Gables jobs get difficult fast. The original George Merrick homes from the 1920s through the 1940s used radius steel casements and masonry surrounds that don’t match any stock impact pattern. We fabricate radius units to the actual rough opening, including the segmented arch spring lines that older masons left slightly out of square. If the Board wants a 2-over-2 divided-light profile replicated, we build that into the submittal drawings before fabrication starts.

Geometric & Shaped Windows
Trapezoids, pentagons, half-rounds with clipped corners, angled transoms. Coral Gables has more of these quirky openings than nearly any other Miami-Dade city, because the original developers used them as an architectural signature. A geometric window that passes Miami-Dade NOA can still be rejected by the Board if the muntin pattern doesn’t preserve the original sightlines. We produce Board-ready shop drawings for every geometric shape we quote.

Oversized Openings
Large arched openings and wide custom corner configurations often mean steel reinforcement or a heavier frame alloy. In Coral Gables, the salt air off Biscayne Bay accelerates corrosion on aluminum frames if you spec the wrong alloy or skip the thermal break. We match the alloy to the exposure and always include a thermal break where the design allows. No shortcuts on metal. That’s how you avoid a sash-binding frame two years in.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Coral Gables
We’re authorized installers for ES Windows, ECO Window Systems, and Mr-Glass, among others. For Coral Gables homes, ES Windows is a frequent choice: their radius and custom-shape capabilities hold up well under Board scrutiny because the sightlines are clean and the divided-light profiles can be matched closely to original casement patterns. ECO Window Systems covers the mid-range custom-impact segment well, and Mr-Glass gives us flexibility on studio and specialty configurations. We order directly from the manufacturer per job, no warehouse stock that gets squeezed onto a wrong-sized opening.
Common Custom & Geometric Windows Problems We See in Coral Gables Homes
- Board denial on divided-light mismatch. A fabricator makes a beautiful impact window in the requested shape, but the muntins are thicker or the pane ratios are wrong. The Board denies it, and the job sits for six to eight weeks. We solve this by submitting drawings before fabrication, not after.
- Corrosion from Biscayne Bay salt air. Standard mill-finish aluminum frames on arched windows corrode within a couple years in Coral Gables, especially on east-facing elevations. Sash binding and seal failure follow. We specify marine-grade alloys and thermal breaks where required.
- Under-rated design pressure on large openings. Cutting a big arched rough opening without checking Miami-Dade design pressure for that elevation leaves the whole wall vulnerable. Large-missile impact testing isn’t optional here, even on the leeward side of the house.
- Rough openings that aren’t square. 1920s and 1930s masonry openings in Coral Gables are often out of square by a half-inch or more. A stock radius frame won’t sit right. We measure and fabricate to the actual opening, not the nominal size on the plan.
Pricing for Custom & Geometric Windows in Coral Gables, FL
A custom impact window in Coral Gables typically runs $1,400 to $3,200 per unit installed, depending on shape complexity and opening size. A straightforward rectangular single-hung might land around $1,100. Arched and radius windows run $2,500 to $5,000 because of the fabrication and the Board submittal work. Oversized openings can push past $5,000 per unit. The Board’s drawing requirements also add modest design and submittal costs that neighboring cities don’t carry. You’ll never get a vague ballpark from us. We measure, we scope, we quote, and that number is the number. Call (727) 604-9322 for a free in-home measure and written line-item quote.
What Custom & Geometric Windows Costs in Coral Gables
For planning purposes, impact windows in Coral Gables run $800 to $1,500 per window installed on standard rectangular openings. Impact single-hungs run $900 to $1,800. Large or custom geometric openings run $2,500 to $5,000 apiece. Whole-home packages run $8,000 to $25,000 or more, driven by opening count, wind-zone exposure, floor height, and frame material. A two-story home with large bays facing Biscayne Bay will cost more than a single-story CBS ranch in the interior. Aluminum alloy choice matters here, too: marine-grade upgrades add cost but are worth it on exposed elevations. We’ll walk you through every line item in writing before you commit. The estimate is free.
Florida Pays You Back
Florida has real money on the table for impact window work, and Coral Gables homeowners should stack every layer. The My Safe Florida Home program offers matching grants up to $10,000 for qualifying wind-mitigation upgrades. Florida also exempts impact-resistant windows and doors from sales tax on the qualifying portion. At the federal level, the 25C energy credit can return 30% of product cost, up to $600 per year, on qualifying energy-efficient units. After installation, a wind-mitigation inspection ($75 to $150) can unlock windstorm premium credits that average around 25% on the windstorm portion of your policy. Programs and carriers set the final numbers, so we won’t guarantee a revenue figure, but we’ll point you to every program that applies.

Dual Compliance: HVHZ and the Board of Architects
Here’s the thing nobody tells you until the permit gets kicked back. Coral Gables is the only city in Miami-Dade where every exterior window and door replacement on a residential structure must clear two completely separate review tracks: Miami-Dade’s HVHZ impact-rating requirements and the city’s own Board of Architects aesthetic review. A trapezoid or radius window that passes Miami-Dade NOA can still be rejected for not matching the original Mediterranean Revival divided-light profile. A vinyl slider that meets every impact test will be denied outright if it doesn’t replicate the casement sightlines of the original 1920s opening.
Contractors who do most of their work in unincorporated Miami-Dade often miss the Board’s monthly meeting schedule. Miss the submission deadline by one day and the job slides six to eight weeks. That’s why we pre-stage Board submittals with architectural drawings before a homeowner has even signed a contract. It’s a workflow almost unheard of outside city limits, and it’s been standard practice for us in Coral Gables for years.
On a 1970s CBS ranch off Sunset Drive, our crew replaced a failing arched casement window with a custom CGI radius unit that had to match the home’s original 2-over-2 divided-light pattern. We pre-staged the Board of Architects submittal with architectural drawings before the homeowner signed anything, then installed the unit with a laminated glass interlayer and thermal break to handle the bay-driven corrosion. The job cleared county HVHZ and the Board in the same meeting cycle, avoiding a six-week delay. That’s the workflow Coral Gables demands, and it’s the one we run.
Acreage Lots and Outbuildings in Coral Gables
Not every Coral Gables custom window job is on a historic home in the city core. Some homeowners are working on larger lots with outbuildings, detached ADUs, shops, or garages. The Board of Architects still reviews exterior window replacements on residential structures, including detached ADUs and outbuildings that are part of the residential parcel. That surprises people who assumed a backyard studio would skip the aesthetic review. It doesn’t.
On these jobs, we’re also looking at grading and drainage around the building, equipment access for setting large radius units, and material haul paths across open ground. A big arched window for a detached ADU at the back of a long lot still needs the same HVHZ compliance and Board submittal as the main house. We scope all of that during the measure, so the quote you get matches the job you actually need.
For the full picture on how we serve this city, see Custom & Geometric Windows in Coral Gables.
Hurricane Shutters vs. Impact Windows: One Comparison
If you live in Coral Gables and you’re weighing impact windows against hurricane shutters, here’s the practical difference. Shutters sit in a garage until a storm approaches, and then somebody has to hang them in the dark and wind. Impact windows are protection that’s already in place, with no panels to store, no tracks to maintain, and no Board of Architects issues on shutter aesthetics (which the Board also reviews, by the way). Impact windows also run quieter, block more UV, and keep the house sealed year-round. For most Coral Gables homeowners, the permanent route wins.
We Also Serve Cities Near Coral Gables
Our crews work throughout the surrounding area, including Miami, Miami Beach, Hialeah, and Miami Gardens. Coral Gables has its own approval process, but the HVHZ standards carry across the county. Wherever the job is, the same Winslow standard applies: real person on the phone, clear written pricing, and Ed’s name on the work.
Serving Coral Gables, FL - Our Local Coverage Area
We’re based in the Coral Gables area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Custom & Geometric Windows in Coral Gables
Yes. A Miami-Dade Notice of Acceptance proves impact-rating compliance, but the Board of Architects reviews aesthetics separately on every residential exterior window replacement in Coral Gables. A geometric window with a valid NOA can still be denied if the divided-light pattern or sightlines don’t match the original design. Call (727) 604-9322 and we’ll tell you early if your shape is likely to clear review.
The Board meets on a set monthly schedule. Missing the submission deadline by even one day pushes the job six to eight weeks. We pre-stage submittals with architectural drawings before fabrication starts, so the approval is in motion while the window is being built. That’s the workflow that keeps Coral Gables jobs on schedule.
Yes, it can. The performance comes from the laminated glass interlayer and the frame anchoring, not from eliminating the divided-light muntins. We fabricate true divided-light patterns that carry the required design pressure rating for the opening. The Board wants the look; the county wants the impact performance. You can have both, but it takes a fabricator who does both routinely. We do.
It often does. Arched and radius frames on elevations facing Biscayne Bay are more exposed to salt air, and standard aluminum alloy can corrode within a couple years, causing sash binding and seal failure. We specify marine-grade alloys and thermal breaks on exposed arches. The cost difference is real, but it buys decades of clean operation. Call (727) 604-9322 for a quote that names the alloy, not just “aluminum.”
Yes. Exterior window replacements on residential structures in Coral Gables, including detached ADUs and outbuildings on the same parcel, still require Board of Architects review. The HVHZ impact requirements also apply. We scope grading, drainage, equipment access, and material haul paths during the measure so the quote covers everything. Estimates are free: call (727) 604-9322.
Call Winslow Windows & Doors for Custom & Geometric Windows in Coral Gables
You don’t need a window company that treats Coral Gables like any other job. You need one that knows the Board’s meeting schedule, the HVHZ design pressure charts, and which alloy survives Biscayne Bay salt air. Ed Winslow’s name is on every job we do, and the one down the road is the one you can call at 2 a.m. and get a real person. Call (727) 604-9322 to schedule your free in-home estimate and written quote.
Written by Ed Winslow, Owner at Winslow Windows & Doors.
Six Reasons Homeowners Choose Winslow Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.










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