Window Installation in San Antonio - Written Price Before Anything Is Ordered

Trusted Window Installation for San Antonio Homeowners

Window installation in San Antonio typically costs between $450 and $1,400 per opening depending on the window type, frame material, and how much structural work the opening needs. Most standard replacements are finished in one day, while full-frame installations or Awning & Hopper Windows and bay window builds take two to three days. Lightwell Windows San Antonio handles both, with a written price before any work starts, so the number you approve is the number you pay. Call (325) 420-4173 to schedule a free estimate.

Call (325) 420-4173

We are part of the Cedarwell network and have operated to the Cedarwell Care Promise since 2010. Keith Yamada leads our San Antonio team, and every installer who walks through your door is background-checked and in uniform. Our work comes with a 365-Day Done Right Promise: if the finished work is not right, we make it right. No debate, no countdown.

A light well is the architectural opening that pulls daylight deep into a building. That is what a well-installed window should do for your home in San Antonio. We carry eight manufacturer brands so the recommendation fits your house, your neighborhood, and the way your family actually lives in the space.

Key Takeaways

• Window installation in San Antonio runs $450 to $1,400 per opening on average, with bay windows and full-frame work at the higher end.
• Every Lightwell job starts with a written price and ends with a photo of the clean-up before the crew leaves.
• We install windows from eight brands, including ECO Window Systems, Mr-Glass, and Therma-Tru.
• The 365-Day Done Right Promise covers every installation we complete.
• Call (325) 420-4173 for a free, no-obligation estimate from Keith Yamada’s team.

Casement Windows

Casement windows are hinged on one side and crank outward, which makes them the tightest-sealing operable window you can put in a San Antonio home. They work especially well over kitchen sinks, in bathrooms, and anywhere a full opening catches the Hill Country breeze. We install Casement Windows from brands like ECO Window Systems, and most replacements run $500 to $1,100 per opening depending on size and whether the existing frame can be reused.

Sealed Against San Antonio Heat

Because the sash presses against the weatherstripping when closed, casement windows block air leakage better than sliding designs. In Alamo Heights and Terrell Hills homes built in the 1960s and 1970s, we regularly see casements that fixed old leaky double-hungs and dropped cooling loads noticeably.

Hardware That Lasts

We check the crank mechanism, hinge arms, and locking points on every casement install. Our written quote covers the full scope: window, flashing, interior trim, and haul-away of the old unit.

Double Hung Windows

Double hung windows have two sashes that slide vertically, and both the top and bottom panels open, which is why so many San Antonio homeowners choose them for bedrooms and second-story rooms. They tilt inward for cleaning, so you never need a ladder to wipe the outside glass. At Lightwell Windows San Antonio, a standard double hung replacement runs $450 to $900 per opening, and we stock options from Mr-Glass and Therma-Tru.

Upstairs Comfort Without the Ladder

If you live in a two-story home in Timberwood Park or Stone Oak, double hungs make sense because both sashes tilt into the room. You clean everything from inside, with no ladder against the stucco.

Quiet Operation for Kids’ Rooms

We set the spring balances so the sash holds position anywhere in the track, and we use quiet-operating hardware. The crew respects quiet hours and we can plan the loudest work around nap schedules when you tell us in advance.

Vinyl Windows

Vinyl windows are the most common replacement window in San Antonio because they handle humidity, don’t need painting, and start around $400 to $800 per opening installed. The frames are made from multi-chambered PVC that insulates well and stands up to the sun without fading or chalking. We install vinyl windows across the San Antonio area, from Kirby to Lackland AFB, and we carry options from ViewLux and ECO Window Systems.

Heat-Resistant Frames for Texas Sun

Cheap vinyl can warp in triple-digit heat, which we see in west-facing windows around Helotes and Leon Valley. We spec frames with reinforced corners and heat-resistant compounds so they stay square and seal tight through the hottest Augusts.

Low-Maintenance for Busy Households

Vinyl never needs scraping and repainting. For families with kids and pets, that means one less maintenance task each spring, and the frames wipe clean with soap and water.

Picture Window

A picture window is a fixed, non-operable pane designed to frame a view and pull maximum daylight into a room. Picture windows make sense in living rooms, dining rooms, and anywhere in San Antonio where you want the outside to feel like part of the inside. A standard picture window replacement runs $400 to $1,200 depending on glass package and size, and we handle installation from rough opening to final trim.

Clear Glass, Clear View

We offer low-emissivity glass packages that cut UV rays and heat gain without darkening the view. In homes near bracken-covered greenbelts, a picture window with the right glazing changes how a whole room feels by noon.

Protecting Furniture and Floors

Before installation, our crew lays drop cloths from the entry door to the work area. Your furniture stays covered, your floors stay clean, and the old window leaves in our truck, not your driveway.

Bay Window Installation

Bay window installation adds a three-panel projection to the exterior wall, creating a reading nook, a plant ledge, or simply more floor light in rooms that face the street. In San Antonio, Bay & Bow Windows installation runs $2,200 to $4,500 for most openings because it involves building a supporting seat and finishing both interior and exterior trim. We handle the full build: framing, insulation, roofing the top, and finishing the interior seat.

Structural Honesty on Every Bay

A bay window carries real weight, and the support framing has to be right. We pull permits where San Antonio requires them and we inspect the framing inside the wall before we order anything, so there are no surprises once the old window comes out.

Finished Inside and Out

The bottom of a bay window becomes a bench or shelf inside your home, and the underside outside gets finished to match the rest of the exterior. We explain the price for the entire job before work starts, including trim, paint-ready surfaces, and clean-up.

Window Contractor

A window contractor is the licensed professional who measures, orders, and installs your windows, and who stands behind the work if anything goes wrong later. In Texas, hiring a proper window contractor matters because the flashing and sealing details determine whether a window leaks in the next Hill Country downpour. Lightwell Windows San Antonio is a window contractor with a written price before any work starts and a 365-Day Done Right Promise on every job.

Why the Details Matter

We flash every window with the house wrap integrated into the opening, not just taped over it. That detail is why homeowners around Castle Hills and Terrell Hills call us after another crew’s work failed at the corners during storm season.

Licensed, Insured, and Accountable

Our installers are background-checked, uniformed, and trained on the C.A.R.E. values: Clean up like it is our own home; Ask before we move or touch anything; Respect the family’s time and quiet hours; Explain the price before the work. That is not a slogan. It is how every job runs.

Window Installers

Window installers are the crew members who remove your old windows, prepare the openings, set the new units, and finish the trim. Good window installers in San Antonio work carefully because the difference between a drafty window and a sealed one is measured in millimeters of flashing and caulk. Our window installers are trained on all eight brands we carry, including complicated bay and picture installations, and they leave your home cleaner than they found it.

Know Who Is at Your Door

Every Lightwell installer is background-checked and arrives in uniform. You know who is at your door before you open it, and that person has already reviewed the scope and price with you in writing.

Clean-Up Is Part of the Job

We use shoe covers, drop cloths, and pet-safe sealants and caulks wherever there is a choice. Before the crew leaves, we take a photo of the clean-up, so you have a record that the job finished the way it started: neat.

Brands We Service

We carry ECO Window Systems windows for homeowners who want a strong mid-range vinyl or aluminum product with good thermal performance. The brand fits San Antonio’s climate well, especially on east and west exposures where the sun hits hard.

Mr-Glass and Therma-Tru round out our most common installs. Mr-Glass gives us a reliable line for impact-rated openings, and Therma-Tru is our go-to when a homeowner wants a beautiful entry door installed on the same visit as their windows. If you have another brand altogether, we can still help. Whether you need window installation in San Antonio, window installation in Schertz, or window installation in Selma, we work with the products that fit your home, not the ones that pad our margin.

Signs You Need a Pro Right Now

• Condensation between the panes. When the seal between two panes of glass fails, moisture gets inside. The window’s insulating gas is gone, and the glass will fog permanently. That means a lost seal, not just a dirty pane.
• Windows that won’t stay open or closed. A double hung that slides down on its own has worn balances, and a casement that won’t crank is a stripped operator. Both are simple fixes for a pro and frustrating daily annoyances for you.
• Drafts you can feel from three feet away. If air moves around the window even when it’s locked, the weatherstripping has compressed or the frame has warped. In San Antonio, that means your air conditioner is working overtime from April to October.
• Soft wood or peeling paint around the frame. Water intrusion rots wood silently. If you can press a finger into the sill or see paint bubbling on the interior side, there is moisture behind the trim that needs to be addressed before the window rots further.
• Outside noise you can’t ignore. If you hear every car on the street and every neighbor’s dog bark, your windows are not sealing against sound. Upgraded glass and better seals make a bedroom noticeably quieter, which matters when you have kids and pets sleeping.

Our Process, Step by Step

1. 1
   Free estimate and measurement. Keith Yamada or one of our senior installers comes to your San Antonio home, measures every opening precisely, and talks through your options. We leave you with a written, line-item price that day.
2. 2
   Written scope and scheduling. You approve the quote, we order the windows, and we schedule a date that works for your family. We confirm the date in advance and arrive when we say we will.
3. 3
   Protection and removal. The crew lays drop cloths from the door to the work area, puts on shoe covers, and moves furniture only after asking you. We remove the old windows carefully and inspect the rough opening for rot or water damage.
4. 4
   Installation and sealing. We set the new window, level it, shim it properly, and flash it into the house wrap. Then we insulate the gap, install the trim, and seal every joint. The work is checked against manufacturer specs before we call it done.
5. 5
   Clean-up and walkthrough. We vacuum the work area, remove all old materials and packaging, and photograph the clean-up. You walk through the job with the lead installer and we review what was done before we leave.

How Much Does Window Installation Cost in San Antonio?

Our Service Area Near San Antonio

Lightwell Windows San Antonio serves the entire metro area, from Schertz and Selma on the northeast side to Helotes and Leon Valley on the west. We work in New Braunfels, Kirby, Terrell Hills, Timberwood Park, Alamo Heights, Castle Hills, and around Lackland AFB. Most estimates are scheduled within a few days of your call, and we respect your time when we arrive. If you are near any of these communities, you are in our service area. Start with our home page to explore everything we do.

Frequently Asked Questions About Window Installation in San Antonio

Schedule Your Window Installation Service in San Antonio Today

Call (325) 420-4173 for a free, no-obligation estimate on window installation in San Antonio. Keith Yamada’s team will measure your openings, walk through your options, and hand you a written price before any work starts. A live person answers 24/7, and the estimate costs you nothing.

Written by Keith Yamada, Owner at Lightwell Windows San Antonio, serving San Antonio since 2010.