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 Sarasota
Custom and geometric window work in Sarasota is not a one-size-fits-all job. A home in Gillespie Park with original 1950s jalousies needs a different hand than a Paul Rudolph-era glass wall on the water or a builder-grade opening in Palmer Ranch. Our crew measures every opening twice, quotes manufacturer lines side by side on paper, and registers both warranty layers before the truck leaves your driveway. If you’re weighing a circular transom, a trapezoid gable window, or a 30-foot sliding glass wall replacement, call (941) 214-2069 and we’ll give you a straight answer.
Why TruePane Windows & Doors Is Sarasota’s Preferred Custom & Geometric Windows Company
We’re not a franchise playbook. Dale Kessler founded TruePane in 2008 on a rule he keeps on the whiteboard: if the pane is not true, the job is not done. That rule governs every arch, radius, and mitered corner we set in Sarasota. Our technicians are background-checked and uniformed, apprentices trained into journeymen, and a live person answers the phone 24 hours a day, 7 days a week. Not a voicemail tree. When a homeowner in South Gate calls about a leaking custom pentagon window, they talk to someone who knows what a pentagon window is.
Sarasota customers call us because the work gets done right the first time. The Keystone Standard means both manufacturer warranty layers are registered in writing before we leave the driveway, durations stated, no arguing later. Our 90-Day Done Right Promise backs every install. If it is not done right, we make it right. No paperwork fights.
Our Custom & Geometric Windows Services in Sarasota
Custom Impact Windows
Most of Sarasota sits within a wind zone that makes impact-rated glazing a practical requirement, not an upsell. We fabricate and install custom impact windows sized to the exact opening, not shimmed and foamed to fit a stock unit that is close enough. That distinction matters on older concrete-block homes in Gulf Gate where the original rough openings were never square to begin with. A typical custom impact window in Sarasota runs $1,100 to $1,800 installed, with larger openings scaling up from there.

Geometric & Shaped Windows
Triangle windows over a gable, octagons in a master bath, trapezoids flanking a front door. These units are ordered to the degree, not picked from a shelf. In Sarasota’s newer master-planned communities like Lakewood Ranch and Palmer Ranch, builders often install standard rectangular units in openings that would take a custom shape beautifully. We work with local HOA architectural review boards to make sure the replacement complies with the community’s design standards before the first cut is made.

Arched & Curved Windows
Arched windows are common on Sarasota’s Mediterranean and Spanish Revival homes, especially in the neighborhoods east of Tamiami Trail. Replacing a 1950s arched awning window with an impact-rated arch that matches the original radius takes a template, a patient fabricator, and an installer who has done it before. We have. Curved units cost more because the glass is bent and the frame is radiused, but the alternative is a square insert that ruins the elevation of the house.

Oversized Openings
A 20-foot sliding glass wall is not four 5-foot windows bolted together. It is an engineered assembly with a header load path, a continuous track, and a design pressure rating matched to the opening. On Siesta Key and Longboat Key, where salt air off the Gulf of Mexico eats standard aluminum within a few seasons, we specify marine-grade alloys or fiberglass frames for oversized openings. Plan on $2,500 to $5,000 for a large custom opening, and understand that this is one place where the cheap bid is the expensive one.

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.
What Custom & Geometric Windows Costs in Sarasota
Sarasota pricing follows the opening, not the brochure. Here is what we see in this market:
- Standard impact window: $800 to $1,500 per window installed
- Impact single-hung: $900 to $1,800 per window installed
- Large or custom openings: $2,500 to $5,000 per assembly
- Whole-home packages: $8,000 to $25,000 or more depending on opening count
What moves the number: opening count, wind zone, floor height, frame material, and whether the existing opening is plumb enough to accept a standard frame or needs custom fabrication. A mid-century Rudolph-era home with 14 original openings and three custom geometries is a different job than a 1990s South Gate block home with seven standard cutouts. We give a free in-home measure and a written line-item quote. The number on the quote is the number on the bill. No change orders, no surprises.
Florida Pays You Back
There is real money on the table for Sarasota homeowners who switch to impact-rated windows and doors. My Safe Florida Home matching grants cover qualifying wind-mitigation upgrades up to $10,000. Florida exempts impact-resistant windows and doors from sales tax. The federal 25C energy credit can return 30 percent of the product cost on qualifying units, up to $600 per year. And after a wind mitigation inspection, which runs $75 to $150, many carriers apply a windstorm premium credit averaging around 25 percent on the windstorm portion of the policy. We do not guarantee any of it. Programs change and carriers set final numbers. What we can do is install units that qualify, hand you the paperwork, and point you to the inspector.
One thing to understand: impact windows beat shutters. Not on first cost. Shutters are cheaper to buy. But shutters sit in a cabinet from November to May, and when a storm is eight hours out, somebody has to climb up and hang them. Impact windows are always working. They protect the opening, cut air conditioning load, and lower the windstorm premium. We do not sell or install shutters. We install the windows that make them unnecessary.
Common Custom & Geometric Windows Problems We See in Sarasota Homes
- Salt-air pitting on standard aluminum frames. Within roughly a mile of the Gulf, off-the-shelf aluminum develops white corrosion blooms and seized hardware within three seasons. Homes on Siesta Key, Casey Key, and the western side of Longboat Key should be in marine-grade alloy or fiberglass. Full stop.
- Slim-sightline glass walls removed and replaced with chunky impact units. We see this on Rudolph-era homes across Sarasota. A contractor sells a standard Miami-Dade impact unit with a 4-inch frame, and the architecturally significant sightline disappears. HOA review or historic preservation rejects it after the permit is filed. The fix is custom fabrication coordinated before the permit, not after.
- Builder warranty voided by an improper swap. In Lakewood Ranch and Palmer Ranch, we have seen homeowners replace builder-grade windows with custom shapes without filing HOA architectural review or preserving the original nailing flange. The builder voids the remaining structural warranty, and the HOA issues a violation. Both are avoidable.
- Leaking geometric windows from bad field fabrication. A triangle window that is cut one degree off will leak at the miter joint. Every time. We order shaped units from fabricators who template the actual opening, and we set them so the miter lines run true. If the pane is not true, the job is not done.
Trusted Brands We Service in Sarasota
We are an authorized installer for more than a dozen manufacturer lines, and for Sarasota custom and geometric work we typically quote CGI, ES Windows, and ECO Window Systems side by side on paper. ES Windows builds some of the slimmest impact-rated aluminum profiles available, which matters on mid-century glass wall retrofits where sightline is the whole point. ECO Window Systems gives us marine-grade powder-coated extrusions and laminated glass interlayers that carry a Miami-Dade NOA. We stock local inventory for the most common Sarasota applications, which means less waiting when the job is urgent and the opening is not standard.
A Word on Sarasota’s Mid-Century Glass Walls
Sarasota is home to the Sarasota School of Architecture, a mid-century modernist movement led by Paul Rudolph and Ralph Twitchell. These homes were built around floor-to-ceiling glass walls and expansive sliding assemblies with aluminum sightlines so thin that no modern off-the-shelf impact unit replicates them. Replacing those original systems with Florida Building Code-compliant impact glazing, without destroying the proportions that make the homes architecturally significant, is a retrofit challenge not found in Bradenton, Venice, or anywhere else in Florida’s window market. It requires coordinating with custom fabricators and sometimes Sarasota County historic preservation staff before a permit is issued. Window companies relocating from other Florida markets consistently underestimate this workflow, and homeowners pay for it in rejected permits and expensive rework.
We replaced a 30-foot expanse of original 1950s jalousie windows in a Gulf Gate concrete-block home with a custom geometric impact-rated system from ECO Window Systems. The corroded aluminum frames came out. Marine-grade powder-coated extrusions and laminated glass interlayers went in. The homeowner kept the original mid-century glass-wall sightline, cut cooling costs by 24 percent in the first summer, and passed the wind mitigation inspection with a design pressure of +55/-65 PSF. That is the standard we work to in Sarasota.
This matters because of how Sarasota was built. Mainland neighborhoods like Gulf Gate, Gillespie Park, and South Gate are filled with 1950s through 1970s concrete-block homes still fitted with original jalousie or single-pane awning windows. Neither meets current Florida impact or energy codes. On the barrier islands, high-value waterfront properties and condos demand marine-grade, impact-rated systems with premium hardware. A custom window company in Sarasota needs to know both markets cold, because the wrong frame material on the wrong house is a callback waiting to happen.
Sarasota County wind-speed design requirements under the Florida Building Code make full-frame impact window and door replacement the dominant product category for retrofits. Design pressure ratings are quoted in PSF and never exceed +/-100. Wind zone numbers like 140 to 170 mph are wind speeds, not design pressures. When you see a quote, check that the design pressure matches the opening and the product approval number is valid. We hand you the Florida Product Approval documentation on every job. It is part of The Keystone Standard.
We Also Serve Cities Near Sarasota
Beyond our Custom & Geometric Windows work throughout Sarasota proper, our crews serve Bradenton, Longboat Key, Osprey, and Palmetto. If you are just outside the city limits and wondering whether we cover your street, call (941) 214-2069. The answer is almost certainly yes. Our scheduling and dispatch coordinate from our metro office, and the technicians who show up at your door are the ones doing the work.
Serving Sarasota, FL - Our Local Coverage Area
We’re based in the Sarasota 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 Sarasota
Expect to take 20 to 30 percent off your cooling load for the openings you replace, depending on orientation, existing shading, and attic insulation. A west-facing wall of original jalousies in Gulf Gate will show a bigger cut than a shaded north elevation. Our Gulf Gate replacement cut cooling costs by 24 percent in the first summer. The real number for your home requires a look at the openings and the AC system. Call (941) 214-2069 for a free in-home measure and we’ll give you an honest estimate.
Yes. We work from downtown Sarasota and Gillespie Park out to Palmer Ranch, Lakewood Ranch, Gulf Gate, South Gate, Siesta Key, Casey Key, and Longboat Key. If you live in Sarasota County and have a custom or geometric window that needs replacement, we cover it. Call (941) 214-2069 and we’ll confirm your street.
Yes, if it is done correctly. We keep the original nailing flange intact, preserve the water management details the builder installed, and file the HOA architectural review paperwork before work starts. In Lakewood Ranch and Palmer Ranch, skipping that review is the fastest way to a voided warranty and an HOA violation. We handle the process because we have done enough of these jobs in Sarasota’s newer communities to know what the boards look for. Call (941) 214-2069 and we’ll walk you through what your specific HOA requires.
No. The written quote we give you is a fixed price. The only way it changes is if you ask for a different product or if we open a wall and find structural damage nobody could have seen beforehand, in which case we stop work, show you what we found, and get your sign-off on a new number before continuing. No change orders hidden in the fine print. That is a square deal, and it is standard on every Sarasota job we do.
Custom fabrication runs 4 to 6 weeks from the day the template is approved. Once your units arrive, most installations are completed in as fast as a single day, depending on the number of openings and the condition of the existing frames. We do not promise same-day ordering, because custom shapes cannot be pulled off a shelf. What we promise is that we’ll be there when we say, and the work gets done right the first time. Call (941) 214-2069 for a timeline on your specific openings.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Sarasota with custom and geometric window craftsmanship rooted in 42 years of community service.
Six Reasons Homeowners Choose TruePane 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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