Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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After
Before
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Before
AfterWindows & Doors in Sunnyvale, CA
Window installation in Sunnyvale most often means replacing the original aluminum single-pane units in 1950s-1970s stucco ranch homes, the housing stock that defines most of the city’s residential core. These houses were built fast during the semiconductor and defense-industry buildout, and the windows and sliding patio doors installed then now fall short of California Title 24 energy standards for Climate Zone 4. The work here is less about swapping glass and more about reworking stucco-wrapped rough openings so modern units actually seal. Call Sightline Windows & Doors at (509) 265-6387 if you want a written price before any tool touches the wall.
Why Sunnyvale Homes Are Different
Sunnyvale sits on the Valley floor, where summer afternoons run 10-15°F warmer than Bay-front cities while mornings drag in cool, moisture-heavy marine-layer air. That daily thermal cycle is hard on window seals: the butyl edges on aging insulated glass units flex, fail, and fog, and the aluminum frames common across the city’s ranch homes oxidize and corrode. The bigger issue is what hides behind the stucco. On the original 1950s-1970s builds, stucco was frequently lapped directly over the window flange with no drainage plane, so water that finds a path behind the frame can sit against the rough opening for years without showing itself. Most owners first learn about this during a pre-sale inspection, when a home inspector flags moisture damage that was never visible from inside the house.
The other Sunnyvale wrinkle is geometry. Slab-foundation ranch homes have shifted over 50-70 years of minor seismic activity, and original aluminum rough openings are rarely square. A replacement window sized for a “standard” opening often won’t seat correctly, which is why flash-and-level scope surprises are common here. Add in Title 24 compliance requirements and the growing number of ADU and second-story addition projects in the city, and the work demands a measured survey that documents the actual rough opening before any product is ordered. That is how we begin every Sunnyvale job.
Our Main Sunnyvale Services
The two jobs Sunnyvale homeowners call us about most are door installation and full window replacement, both of which have their own dedicated pages with local pricing and scope details.
Door Installation in Sunnyvale
Door installation in Sunnyvale typically means addressing the slab-foundation movement that has racked original frames out of plumb. A sliding patio door that “works” on a 1960s ranch home often fails inspection because the frame is no longer square, and removal routinely uncovers 60-year-old stucco lapped over the flange with no drainage plane. We measure the actual opening, document what is behind the stucco, and install a door that seals at all four corners. Here’s the full breakdown: Door Installation in Sunnyvale.
Window Replacement in Sunnyvale
Window replacement in Sunnyvale means trading single-pane aluminum for Title 24-compliant units sized to openings that have not been square since the Nixon administration. The stucco-wrap integration is the hard part: cutting back the exterior cladding, flashing properly, and re-sealing so the new frame drains. We write the price before the first measurement is finalized, and the survey the customer keeps is the same document as the quote. See what full replacement costs locally: Window Replacement in Sunnyvale.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
BeforeAfterWindow Installation in Sunnyvale
Window installation across Sunnyvale’s 1950s-1970s ranch housing stock usually means tearing out original aluminum single-pane windows and fitting Title 24-compliant units into stucco rough openings that have drifted out of square over five to seven decades. The daily Valley-floor thermal cycle, warm afternoons and damp marine-layer mornings, has degraded whatever butyl seals the original insulated units had. Most projects also require stucco-wrap rework: cutting back the exterior cladding, flashing the opening, and sealing so water sheds away from the frame instead of into the wall. Our Window Installation process starts with a measured survey you keep, and the written quote cannot differ from that document.
Single & Double Hung Windows
Signs you need it
Operable sashes on your original aluminum windows bind, rattle, or won’t stay open because the frame has racked out of square over decades of slab settlement.
What it costs in Sunnyvale
Expect $450-$1,200 per opening for a single hung and $650-$1,700 per opening for a double hung, including stucco-wrap rework and flashing.
How we do it
We pull the old frame, check rough-opening squareness, install new sill flashings and side flashings, set the unit, and re-seal the stucco exterior to a drainage plane.
Horizontal Roller Windows
Signs you need it
The sliding sashes on your original aluminum rollers catch or fall out of their tracks, a symptom of opening drift common on Sunnyvale slab homes.
What it costs in Sunnyvale
Plan on $350-$900 per opening for horizontal roller units sized to typical ranch-home rough openings, including frame squareing and stucco re-seal.
How we do it
We measure the actual opening in three places, order the unit to that dimension, replace the track and roller hardware, and seal the exterior to a proper drainage plane.
Casement Windows
Signs you need it
You want cross-ventilation on warm Valley-floor afternoons but the original fixed or hopper windows do not open far enough to move air through the house.
What it costs in Sunnyvale
Budget $600-$1,500 per casement opening, with the higher end reflecting oversized or second-story placement and stucco-flashing scope.
How we do it
We set the crank hardware to operate smoothly, level the frame in the rough opening, install sill and side flashings, and re-seal the stucco exterior.
Awning & Hopper Windows
Signs you need it
Your kitchen or bath has original aluminum awning windows that have corroded at the corners, or hopper units that no longer close tight against the gasket.
What it costs in Sunnyvale
Expect $350-$850 per unit for awning or hopper windows in standard ranch-home openings, with scope depending on stucco-wrap condition.
How we do it
We remove the corroded frame, check for moisture behind the stucco, install new flashings, set the replacement unit, and re-seal the exterior.
What Window Installation Costs in Sunnyvale
| Item | Typical range in Sunnyvale |
|---|---|
| Single hung window | $450-$1,200 per opening |
| Double hung window | $650-$1,700 per opening |
| Horizontal roller window | $350-$900 per opening |
Is Title 24 compliance required for window replacement in Sunnyvale?
Yes. Replacement windows in Climate Zone 4 must meet specified U-factor and SHGC thresholds, and your project needs documentation showing the units you installed meet them. Our written quote lists the performance specs. Call (509) 265-6387 for an exact price.
Will the stucco around my new windows need repair?
Usually yes. Original 1950s-1970s Sunnyvale homes often have stucco lapped directly over the frame flange with no drainage plane. Re-flashing means cutting back that stucco and re-sealing, which is included in our written price. Call (509) 265-6387 for a free estimate.
Impact Windows & Doors in Sunnyvale
Impact windows and doors in Sunnyvale are less about hurricane categories and more about glass that holds its shape when something hits it, and keeps holding it after. Sunnyvale’s older ranch homes run hot in the afternoon and cool at night, and a single-pane aluminum window with zero impact rating is both a security gap and a solar-gain liability. Homeowners in this city often specify impact glass during full window replacement because the price difference between it and standard tempered units has narrowed, and the added stiffness helps on frames that have already drifted. Our Impact Windows & Doors work includes the same stucco-wrap re-flashing every other Sunnyvale installation requires.
Impact-Resistant Windows
Signs you need it
Your existing windows are original single-pane aluminum, and you want glass that meets current impact standards without changing the look of the house.
What it costs in Sunnyvale
Impact-resistant windows in Sunnyvale typically run $650-$1,400 per opening depending on size and frame material.
How we do it
We spec the impact-rated unit to match your rough opening, install the frame with full flashings, set the laminated glass, and document the final assembly.
Double Hung Impact Windows
Signs you need it
You want an operable double hung that meets impact standards, and your current aluminum double hung no longer seals or squares in its opening.
What it costs in Sunnyvale
Expect $700-$1,600 per double hung impact unit in Sunnyvale, including stucco-wrap integration and flashing rework.
How we do it
We measure the rough opening in three places, order the impact double hung to that dimension, set the frame square, and re-seal the exterior to drain.
What Impact Windows & Doors Costs in Sunnyvale
| Item | Typical range in Sunnyvale |
|---|---|
| Impact-resistant window | $650-$1,400 per opening |
| Double hung impact window | $700-$1,600 per opening |
| Impact sliding glass door | $2,500-$6,000 per door |
Do impact windows help with Sunnyvale’s afternoon heat?
Yes. Impact-rated laminated glass includes an interlayer that also cuts solar heat gain, which matters when Sunnyvale runs 10-15°F warmer than Bay-front cities. You get security and energy performance in the same unit. Call (509) 265-6387 for a written quote.
Will impact windows change how my Sunnyvale ranch home looks?
No. Impact ratings describe the glass and frame assembly, not the sightlines. The unit sits in the same rough opening, and the exterior trim matches standard replacement windows. Call (509) 265-6387 to see product options.
Energy-Efficient Windows in Sunnyvale
Energy-efficient windows in Sunnyvale are not an upgrade so much as a Title 24 baseline: Climate Zone 4 requires specific U-factor and SHGC performance, and the original single-pane aluminum units in the city’s ranch homes miss those numbers by a wide margin. Afternoon temperatures on the Valley floor beat Bay-front readings by 10-15°F, so glass with the wrong solar gain turns a living room into a solar oven. The marine layer that rolls in overnight means the same window needs to keep cool air in. Our Energy-Efficient Windows are specified by performance tier, with the U-factor and SHGC written on the quote you keep.
Low-E & Argon Gas Glass
Signs you need it
Your west-facing windows turn rooms unusable on summer afternoons, or your current double-pane units have failed seals and fog between the panes.
What it costs in Sunnyvale
Low-E with argon gas fill runs $500-$1,300 per opening in Sunnyvale, depending on size and whether the unit is a replacement or new construction.
How we do it
We select the Low-E coating and argon fill to hit Title 24 U-factor and SHGC targets, then install the unit with full flashings and a sealed frame.
UV-Blocking & Fade Protection
Signs you need it
Hardwood floors, rugs, or furniture near your windows have visible sun-fade lines from years of unfiltered Valley sun.
What it costs in Sunnyvale
UV-blocking glass packages add $100-$300 per opening over standard Low-E in Sunnyvale, depending on the glass package.
How we do it
We spec the UV-blocking glazing into the same energy package, verify the coating spec against the quote, and install the unit with our standard flashing process.
What Energy-Efficient Windows Costs in Sunnyvale
| Item | Typical range in Sunnyvale |
|---|---|
| Low-E & argon gas window | $500-$1,300 per opening |
| UV-blocking package add-on | $100-$300 per opening |
| ENERGY STAR replacement window | $450-$1,200 per opening |
What U-factor and SHGC does Title 24 require in Sunnyvale?
Sunnyvale sits in Climate Zone 4, and the exact thresholds vary by window orientation and glazing area. We write the required U-factor and SHGC on every quote so you can verify compliance yourself. Call (509) 265-6387 for specifics.
Will energy-efficient windows pay for themselves on a Sunnyvale utility bill?
They reduce solar heat gain and seal air leaks, which lowers cooling costs during warm Valley-floor afternoons. The energy savings depends on the house, but the comfort difference is noticeable in west-facing rooms. Call (509) 265-6387 for a written price.
Sliding & Patio Doors in Sunnyvale
Sliding patio doors on Sunnyvale’s slab-foundation ranch homes fail in a pattern all their own: decades of minor seismic movement rack the frame out of plumb, so doors that technically slide will not pass a home inspection. Removal routinely reveals that the original 1960s stucco was lapped directly over the frame flange with no drainage plane, which is a repair scope owners rarely see coming. We document what is behind the stucco before we write the price. Our Sliding & Patio Doors work in Sunnyvale handles the frame, the drainage rework, and the new door as one scope, with one written number.
Sliding Glass Door Replacement
Signs you need it
Your sliding door drags, binds, or leaves a visible gap at the header because the frame has settled out of square over decades of slab movement.
What it costs in Sunnyvale
Sliding glass door replacement in Sunnyvale runs $1,500-$4,000 per door, with stucco drainage rework typically adding to the total.
How we do it
We remove the old slab and frame, check the rough opening with a laser, add sill and side flashings, rework the stucco interface, and set the new door square.
Impact Sliding Glass Doors
Signs you need it
You want a sliding door with impact-rated glass, and you are replacing a racked original aluminum door that cannot hold a modern weather seal.
What it costs in Sunnyvale
Impact sliding glass doors in Sunnyvale typically cost $2,500-$6,000 per door, depending on width and the condition of the rough opening.
How we do it
We order the impact-rated panel to the measured rough opening, re-flash the sill and sides, and set the door to drain properly against the stucco.
What Sliding & Patio Doors Costs in Sunnyvale
| Item | Typical range in Sunnyvale |
|---|---|
| Sliding glass door replacement | $1,500-$4,000 per door |
| Impact sliding glass door | $2,500-$6,000 per door |
| Screen door installation | $120-$300 per door |
Is a sliding door that still works worth replacing in Sunnyvale?
Often yes. Sunnyvale’s original aluminum patio doors can slide while being out of plumb and leaking air. A home inspector may flag the frame during pre-sale, even if it opens smoothly. Call (509) 265-6387 for a written assessment.
Will my new sliding door need stucco repair around it?
Usually, on original 1950s-1970s Sunnyvale construction, because the old stucco was lapped over the flange with no drainage plane. We include the stucco re-seal in our written quote so you see the full scope before work starts.
Impact Garage Doors in Sunnyvale
Impact garage doors in Sunnyvale serve ranch homes where the garage faces the street and takes the brunt of afternoon solar gain, plus newer builds where the garage has become storage for more expensive equipment than the original door was designed to protect. The original wood or thin steel doors on 1950s-1970s Sunnyvale homes dent, warp, and lose their weather seals. Replacing one means re-hanging the tracks on walls that may have settled, and re-setting the opening so the door seats square. Our Impact Garage Doors are specified by wind-load and impact rating, sized to the actual opening after we measure it.
Garage Door Replacement
Signs you need it
Your existing garage door is dented, sagging, or no longer seals at the corners, or the panel faces have separated from years of thermal cycling.
What it costs in Sunnyvale
Garage door replacement in Sunnyvale runs $1,800-$4,500 per door, with track re-setting and rough-opening correction adding to the scope.
How we do it
We measure the rough opening, replace the track and hardware, set the new panels, and balance the springs to the door’s weight and duty cycle.
Wind-Load Code Compliance
Signs you need it
Your garage door’s label plate is missing or predates current wind-load requirements, and you want documentation that the installed door meets code.
What it costs in Sunnyvale
Wind-load-compliant garage doors in Sunnyvale add $300-$700 per door over standard units, depending on the required rating.
How we do it
We verify the wind-load requirement for your specific opening, order a rated door, and provide the documentation proving the installed unit meets it.
What Impact Garage Doors Costs in Sunnyvale
| Item | Typical range in Sunnyvale |
|---|---|
| Garage door replacement | $1,800-$4,500 per door |
| Wind-load code compliance | $300-$700 per door |
| Energy-efficient garage door | $2,200-$5,000 per door |
Are wind-load ratings required for garage doors in Sunnyvale?
Sunnyvale’s building code references wind-load requirements for garage doors, and the exact rating depends on your home’s exposure and opening size. We verify the requirement and document that the installed door meets it. Call (509) 265-6387 for a written quote.
Will a new garage door reduce heat in my Sunnyvale garage?
Yes. Insulated impact-rated doors noticeably reduce solar heat gain on afternoon-facing garages, which matters when Sunnyvale runs warmer than Bay-front cities. The insulation value is written on our quote. Call (509) 265-6387 for exact pricing.
Custom & Geometric Windows in Sunnyvale
Custom and geometric windows in Sunnyvale usually appear on newer second-story additions, ADU projects, and the occasional full gut renovation where rough openings are cut fresh rather than replaced. But the original ranch homes also have their share of fixed trapezoid windows and eyebrow vents over entry doors that no stock unit matches. When the opening is not a rectangle, or the stucco work is nonstandard, you need a measured survey and a window built to the actual dimensions. Our Custom & Geometric Windows work is quoted from that survey, with the price written before any order is placed.
Arched & Curved Windows
Signs you need it
You have an arched or radius top window that is failing or fogged, and no stock replacement fits the existing curved rough opening.
What it costs in Sunnyvale
Arched or curved windows in Sunnyvale run $900-$2,000 per unit depending on radius and frame material.
How we do it
We template the exact curve, order the unit to that radius, set it in the opening with full flashings, and re-seal the stucco or cladding.
Oversized Openings
Signs you need it
Your renovation cut a wide or tall rough opening through stucco, and the opening needs a window engineered for the larger span and wind load.
What it costs in Sunnyvale
Oversized custom windows in Sunnyvale start around $1,200 per opening and rise with size, glass package, and structural requirements.
How we do it
We measure the full opening, specify structural framing and glazing to the span, and install the unit with a documented flashing sequence.
What Custom & Geometric Windows Costs in Sunnyvale
| Item | Typical range in Sunnyvale |
|---|---|
| Arched or curved window | $900-$2,000 per unit |
| Oversized custom window | $1,200+ per opening |
| Geometric or shaped window | $700-$1,800 per unit |
Can you match a geometric window to the rest of my Sunnyvale house?
Yes. We template the existing shape, match the frame color and glass package to the surrounding windows, and build the unit to the measured radius or angle. Call (509) 265-6387 for a written quote.
Do custom windows take longer to install in Sunnyvale?
Custom units require fabrication time after measurement, usually two to four weeks depending on shape and glass. Our written quote includes the full timeline before you commit. Call (509) 265-6387 to discuss your opening.
Brands We Service in Sunnyvale
We specify windows and doors from PGT, CGI, CWS, and ES Windows, selected by performance tier and price range for the opening, not by margin. Our crews work with these systems regularly across Sunnyvale, and ordering through our supply chain typically keeps lead times predictable. See the full list on our brands page.
Pricing for Windows & Doors in Sunnyvale, CA
| Service | Typical range in Sunnyvale |
|---|---|
| Single hung window | $450-$1,200 per opening |
| Double hung window | $650-$1,700 per opening |
| Horizontal roller window | $350-$900 per opening |
| Casement window | $600-$1,500 per opening |
| Impact-resistant window | $650-$1,400 per opening |
| Low-E & argon gas window | $500-$1,300 per opening |
| Sliding glass door replacement | $1,500-$4,000 per door |
| Impact sliding glass door | $2,500-$6,000 per door |
| Garage door replacement | $1,800-$4,500 per door |
| Custom geometric window | $700-$1,800 per unit |
What pushes a Sunnyvale quote up is the stucco-wrap condition behind the old frame, the rough opening being out of square, and any Title 24 documentation the city asks for. What keeps it predictable is our written price: the measured survey we give you is the same document as the quote, so the number does not change once work starts.
Neighborhoods We Serve in Sunnyvale
We work across Sunnyvale’s residential neighborhoods, from the ranch-home blocks near the city’s original 1950s subdivisions to the newer second-story additions and ADU builds throughout the Valley floor. Typical response in the city is same-day for calls placed before early afternoon, with scheduling built around the measured survey.
- Lakewood Village
- Cherry Chase
- Ponderosa Park
- Cumberland South
- Ortega
Service Area - Cities Near Sunnyvale
Our crews serving Sunnyvale also handle window and door work in Mountain View, CA, Santa Clara, CA, Cupertino, CA, and Los Altos, CA. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, with crews serving Sunnyvale locally.
Serving Sunnyvale, CA - Our Local Coverage Area
We’re based in the Sunnyvale 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 About Windows & Doors in Sunnyvale
We schedule measured surveys across Sunnyvale on a rolling basis, and callers before early afternoon usually get same-day response. The survey itself is the first visit, and the written quote you keep is produced from that document. Call (509) 265-6387 to schedule.
Some Sunnyvale neighborhoods with homeowners associations require design review before exterior changes, including window style and frame color. We provide the spec sheet and product details your HOA will want, and the written quote stands regardless of review timing.
You receive the measured survey you kept at the start, the written scope and price, a documented photo record of every visit, and the written warranty under the 365-Day Done Right Promise. Everything we claim travels with the document.
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Sunnyvale Customers Say
"Replaced eight windows. They showed me the U-factor on the units they were actually fitting rather than the brochure numbers."
- Kofi B."They photographed the rotten sill they found under the old frame before replacing it, and the extra cost was agreed in writing before they carried on."
- Rosalind C."Front door install went smoothly. Written warranty, clear price, no pressure to upgrade anything."
- Nils H.