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ES Windows Construction in Costa Mesa, CA | Square One Builders
We provide independent ES Windows service and installation across Costa Mesa’s 92626, 92627, and 92628 ZIP codes, from replacement sashes on Westside bungalows to full slider and window packages for infill remodels and ADUs. What makes our ES Windows work different here is the specific knowledge of how these units age in coastal marine-layer air and tight postwar rough openings. We’re not authorized or affiliated with ES Windows, and that independence means we make repair-vs-replace calls that serve your house, not a manufacturer’s sales channel. Call (877) 688-9930 for a straight answer about your windows.

Why Costa Mesa Residents Choose Us for ES Windows Service
Most of our ES Windows calls in Costa Mesa start the same way: someone opens a wall for a kitchen or bathroom remodel and finds a sliding door or window that was set wrong years ago. That’s where Brent Calloway’s background matters. He grew up in the Midway City pocket off Bolsa Avenue and learned framing, concrete, and finish work through Golden West College’s Construction Technology program, then spent years on the kind of jobs where reading a rough opening correctly is the whole game. When we open a 1950s-era exterior wall in Costa Mesa, we already expect the opening to be out of square. We plan for it before demolition starts, so the new ES Windows unit gets set on a true, dry, properly flashed opening instead of being shimmed and foamed into a sloppy hole.
We source ES Windows sales & service knowledge from years of hands-on work with the brand’s vinyl single-hung, double-hung, slider, and picture units. But we’re a full-scope general contractor first. That means the ES Windows work doesn’t happen in a vacuum; it gets tied into the surrounding framing, waterproofing, and finish work under one contract. One contractor, every system.
Styles & brands we work with







Common ES Windows Construction Problems We Solve in Costa Mesa
- Marine-layer moisture and salt air degrading exterior sealant. On west- and south-facing walls especially, cheap sealant around ES vinyl frames breaks down faster here than it does inland. Water tracks behind the nail flange and starts eating at the framing. We cut out the old sealant, replace with high-grade exterior silicone, and swap in corrosion-rated fasteners where needed.
- Out-of-square rough openings on 1950s-’60s tract homes. The 92626 and 92627 cores are full of postwar slab-on-grade homes where original openings were never square. A replacement ES unit that gets shimmed and foamed unevenly will bind or fail to latch within a few seasons. We correct the opening first.
- Warped vinyl frames and shrunk weatherstripping on full-sun exposures. Older ES sliders and single-hungs that face unshaded south or west walls in Costa Mesa see a lot of UV. Frames can warp slightly, and weatherstripping shrinks, which means drafts and water at the meeting rail. Where the frame is still sound, we replace the weatherstripping and re-align the sash. Where it’s warped, we recommend full replacement in the same opening.
- Failed weep drainage and clogged sill tracks on ES patio sliders. In remodels where we open walls, we routinely find sliders with missing or clogged weep holes. Water pools in the track, sits against the frame, and rots the rough sill. We clean and restore the drain path or install a new unit with a correct sill pan and weep system.
- Original flashing that was never done right. This is the one we see most in Costa Mesa’s older Westside and 92627 blocks. The window or slider was installed into a raw opening with no sill pan, no back dam, and no taped flange. The unit still functions, but the wall behind it is slowly failing. When we’re already opening that wall for a remodel, we reset the opening properly and reinstall or replace the ES unit.
ES Windows Service in Costa Mesa: What Local Conditions Mean for Your Equipment
Costa Mesa is a built-out coastal-adjacent city where nearly every construction project is infill. Teardown-and-rebuild on small Westside lots, second-story additions and ADUs squeezed behind existing 1950s-’60s tracts, or remodel work around an active household all share one reality: almost nobody is building new-construction fenestration on open ground here. That means ES Windows work in Costa Mesa is almost always replacement-in-existing-rough-opening or infill-wall installation between existing structures. The original openings on those postwar tract homes are rarely square, and the walls themselves have spent sixty years settling into slab-on-grade foundations. On a Westside remodel off a 92627 block, we opened a kitchen wall and found the ES vinyl slider’s sill pan had never been properly flashed, with marine-layer moisture and salt air already staining the framing behind it—the same issue we see on ES Windows in San Joaquin Hills. We reset the opening square, installed a new ES sliding unit with corrosion-rated fasteners and a corrected sill pan and weep path, then tied it into the gut kitchen remodel so the new cabinets and counters landed against a dry, true wall. That’s what the job looks like in Costa Mesa: less open land, more opened walls, and a lot of original mistakes to fix along the way.
ES Windows Models & Products We Service in Costa Mesa
Our ES Windows service work covers the brand’s vinyl single-hung and double-hung replacement windows, vinyl sliding patio doors, picture and fixed-frame units, and horizontal sliders. The horizontal sliders show up frequently on Westside bungalow remodels where the original homes were built around that older window style. For parts, we source OEM ES Windows sashes, glazing, and hardware when a unit is still serviceable. When OEM parts aren’t practical or available on a reasonable schedule, we use matched aftermarket weatherstripping and corrosion-rated fasteners. We don’t stock every ES part in a warehouse, and you should be skeptical of any Costa Mesa contractor who claims they do. What we do is know which suppliers carry what, and we order correctly the first time so you’re not waiting on a return.
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AfterES Windows Service Pricing in Costa Mesa
Here are the realistic price ranges for the kind of ES Windows work we do in Costa Mesa. These aren’t bids; they’re planning numbers.
| Service | Typical Range |
|---|---|
| Kitchen Remodel | $14,000 – $45,000 |
| Window Replacement | $4,500 – $15,000 |
| Home Addition | $45,000 – $130,000 |
| ADU Construction | $90,000 – $220,000 |
What drives the cost on ES Windows work specifically is the condition of the rough opening, whether we’re repairing or replacing the unit, and whether the work is standalone or part of a larger remodel. A free estimate includes opening inspection, measurement, and a written line-item quote. Call (877) 688-9930 for exact numbers on your house.

Serving Costa Mesa, CA — Our Local Coverage Area
We’re based in the Costa Mesa area and also handle ES Windows service in Fountain Valley, so we know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – ES Windows Construction in Costa Mesa
Yes. A replacement ES Window will fit an out-of-square opening, but only if the installer corrects the opening before setting the unit. We shim, plane, or reframe as needed so the ES unit sits square and operates cleanly. We do this on Costa Mesa tract homes regularly. Call (877) 688-9930 for an assessment.
Yes, and it’s most visible on west- and south-facing elevations. Moist air and salt particles sit on sealant and weatherstripping, and cheap materials degrade faster than they would in, say, Corona. Using corrosion-rated fasteners and marine-grade sealant is the difference between a ten-year install and a thirty-year install. We spec those as standard on Costa Mesa jobs.
If the frame is sound and the problem is a bad sash, seal, or hardware, we repair it with OEM or properly matched parts. If the frame is warped or the rough opening is rotted, and we’re already opening that wall for the remodel, replacement in the same rough opening is usually the smarter long-term call. Call (877) 688-9930 for a straight recommendation on your specific slider.
Yes. Our ADU and addition work in Costa Mesa regularly includes new ES Window packages in infill walls and second-story additions. Because we’re a General Contractor – Costa Mesa, the window installation is coordinated with the framing, sheathing, and waterproofing under one contract. We work with ADU partners including Abodu, Dvele, Boxabl, Mighty Buildings, and Plant Prefab.
Santa Ana winds are dry and strong, and they expose air leaks fast. Shrunk weatherstripping on older ES sliders and single-hungs becomes obvious during the first real Santa Ana event of fall. We also schedule exterior work around high-wind days because setting a large picture window in sustained gusts is unsafe, whether it’s here or on an ES Windows repair in Huntington Beach. Call (877) 688-9930 to plan your install window.
Service Areas Near Costa Mesa
Beyond our Costa Mesa coverage, we provide ES Windows construction service in neighboring Orange County areas including ES Windows service in Tustin and ES Windows service in Newport Beach, plus Corona, Norco, La Verne, Claremont, and Montclair for full-scope remodel and addition work. For details on our broader reach, see our Costa Mesa service area page.
Book Your ES Windows Service in Costa Mesa Today
Start from square one, build it right. Call (877) 688-9930 for a free estimate on your ES Windows repair, replacement, or full remodel in Costa Mesa. We’ll give you a straight answer and a written quote.
Written by Brent Calloway, Owner at Square One Builders, serving Costa Mesa and Orange County since 1996.