Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Before
After
Before
After
Before
AfterTrusted Windows & Doors for Cupertino Homeowners
Window and door replacement in Cupertino typically runs $4,500-$25,000 depending on scope, with most projects quoted and started within two weeks. Rowan Construction Group has installed and replaced Windows & Doors - Cupertino since 2007, from single-family homes near Rancho Rinconada to newer construction in the Monta Vista area. Every job starts with a flat written price before any work begins, and every crew member is background-checked, uniformed, and arrives with a documented photo record as standard. Call (669) 202-9618 to schedule your free estimate.
We’ve completed over 4,000 projects across Santa Clara County, and our window and door work in Cupertino reflects what we’ve learned from this market specifically. The combination of older Eichler and ranch-style homes with original single-pane glass, plus newer builds facing Caltrain corridor noise and summer heat, means Cupertino homeowners need solutions that address energy performance, sound transmission, and structural integrity without defaulting to the most expensive option. Our quotes name the brand, the U-factor, and the installed price - no “call for pricing,” no allowance numbers that balloon later. Under Clause 1 of The Haven Standard, the price is written before anyone picks up a tool.
What Our Windows & Doors Service Includes
Window Installation
New window installation in Cupertino covers everything from rough-opening preparation to final trim and sealant. We install vinyl, fiberglass, and aluminum-clad units across the full range of operating styles: single-hung, double-hung, casement, awning, and fixed picture windows. Most new installations we quote in Cupertino fall between $450 and $1,200 per opening depending on size, material, and whether the wall requires structural modification for a larger unit.
Door Installation
Door installation includes entry doors, patio doors, interior passage doors, and specialty units like fire-rated garage-to-house doors. We measure the rough opening, verify level and plumb, install pre-hung or slab units with proper shimming and fastening, and finish with weatherstripping, hardware, and trim. In Cupertino’s older homes, we often find original 32-inch entry doors that no longer meet code for egress; we quote the door, the frame modification, and any permit-required inspection as a single flat number.
Window Replacement
Window replacement removes the existing unit while preserving the surrounding siding, drywall, and trim wherever possible. Our crews in Cupertino regularly replace original 1950s-1970s aluminum and wood windows with modern insulated units, with typical whole-house projects running $4,500-$15,000. We photograph the existing condition, note any rot in the sill or jamb, and include remediation in the written scope so the price doesn’t shift once the old window is out.
Impact Windows & Doors
Impact windows and doors use laminated glass and reinforced frames to resist wind-borne debris and forced entry. While Cupertino isn’t a hurricane zone, impact-rated products are specified by some HOAs in the Villages area and by homeowners who want the security benefit without aftermarket bars or film. Impact window installation in Cupertino typically runs $8,000-$25,000 for a full home, with per-opening costs roughly double standard replacement units due to the glass thickness and hardware rating.
Energy-Efficient Windows
Energy-efficient windows reduce heating and cooling load through low-E coatings, argon gas fill, and warm-edge spacers. In Cupertino’s climate, where summer afternoons hit the 80s and winter nights drop to the 40s, a proper low-E coating on the west and south faces can cut solar heat gain by 40-60% compared to clear glass. We quote the U-factor and SHGC (solar heat gain coefficient) for each orientation so you can see what you’re paying for and what the PG&E impact should be.
Sliding & Patio Doors
Sliding and patio door installation covers multi-panel vinyl, aluminum, and fiberglass units with various rail systems and screen options. We see a lot of failed rollers and corroded tracks in Cupertino’s original sliding doors, especially in the ranch neighborhoods off McClellan Road, and also install our Windows & Doors in Saratoga. A standard 6-foot sliding door replacement runs $1,800-$4,500 installed; multi-panel folding or lift-and-slide systems for larger openings start around $6,000 and require structural header verification that we include in our assessment.
Impact Garage Doors
Impact-rated garage doors use reinforced panels, heavy-duty track, and wind-load hardware to meet specific pressure ratings. In Cupertino, this matters less for weather and more for security and insurance requirements in certain planned communities. We measure the existing torsion spring system, verify the opener capacity for the heavier door, and quote the complete assembly including any spring or opener upgrade needed to handle the additional weight.
Custom & Geometric Windows
Custom and geometric windows - circles, arches, trapezoids, and polygonal units - require precise field measurement and often a site-built or heavily modified rough opening. We’ve fabricated and installed custom window configurations in Cupertino’s custom homes near the foothills, working from architect drawings and verifying every dimension before ordering. These units carry longer lead times, typically 8-12 weeks, and we build that schedule into our project timeline with written milestones.
Hurricane Impact Windows
Hurricane impact windows meet ASTM E1996 and Miami-Dade protocols for large-missile impact resistance. While Cupertino’s building code doesn’t require them, some homeowners specify them for second homes or rental properties in multi-climate portfolios. We source these through certified distributors and include the product approval documentation with every quote so your inspector or insurance underwriter has what they need.
Impact Sliding Glass Doors
Impact sliding glass doors combine the large opening of a standard patio door with laminated glass and reinforced interlocks. These are heavier than standard units - often 150-200 pounds per panel - and require precise roller adjustment and track leveling for smooth operation. Our crews in Cupertino have installed impact sliders up to 16 feet wide; we verify the header capacity and include any necessary structural reinforcement in the flat written price.
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.
Brands We Service for Windows & Doors
We maintain active supplier relationships and technical documentation for CWS, ES Windows, ECO Window Systems, and Mr-Glass. With CWS, we’ve installed hundreds of their vinyl and aluminum units across Santa Clara County, including Windows & Doors in Sunnyvale, and stock common replacement hardware including balances, locks, and sash kits. ES Windows’ impact-rated product line requires specific fastening patterns and sealant details that our crews are certified to execute; we include their installation manual excerpts in our project folders for inspector reference. ECO Window Systems’ thermally broken aluminum frames work well for Cupertino’s modern and mid-century homes where narrow sightlines matter, and we’ve developed a measurement protocol for their custom sizes that reduces reorder rates to near zero. Mr-Glass specializes in laminated and specialty glass configurations; we use their products for custom geometric units and security applications where standard laminated glass doesn’t meet the specification.
Whether you have CWS, ES Windows, ECO Window Systems, Mr-Glass, or any other manufacturer, we can source, install, repair, or replace it. Our written quotes name the brand and model when specified, or recommend equivalent alternatives with comparable performance data when the original is discontinued.
Before
AfterSigns You Need Windows & Doors Right Now
- Drafty rooms or temperature stratification near windows. If you’re avoiding the chair by the living room window in January or the kitchen feels 10 degrees hotter than the den in August, the weatherstripping has failed or the insulated glass unit has lost its seal. Either way, you’re conditioning the outdoors and paying PG&E for the privilege.
- Condensation between panes that doesn’t wipe off. Fog or water droplets inside a double-pane window means the edge seal has failed and the argon gas has escaped. The window still blocks wind, but its insulating value is roughly that of a single pane. In Cupertino’s climate, this accelerates frame rot in wood units and corrosion in aluminum ones.
- Difficulty opening, closing, or locking. Windows that stick, slam shut, or won’t latch are more than annoying. A window that won’t lock is a security issue; a window that won’t open is a fire egress code violation in bedrooms. The cause is usually balance failure, sash warp, or frame settlement - all diagnosable and quotable before we start.
- Visible frame damage or water staining. Soft spots in wood sills, bubbling paint, or drywall staining below window corners indicate water intrusion that has moved past the window itself into the wall assembly. This progresses to structural damage and mold risk; we photograph the extent and include remediation in our written scope.
- Exterior noise intrusion that has worsened. If BART vibration, Caltrain horns, or Stevens Creek Boulevard traffic has become more noticeable indoors, your windows’ acoustic performance has degraded. Modern laminated glass and proper installation can reduce exterior noise by 30-50% compared to original single-pane units.
Our Windows & Doors Process - Step by Step
- 1
On-site assessment and measurement. We arrive with laser measuring tools, a moisture meter, and a camera. Every window and door opening is measured twice, the existing condition is photographed, and we note any structural concerns, code issues, or accessibility requirements. You receive a copy of the photo record within 24 hours.
- 2
Written quote with flat price and scope. Under Clause 1 of The Haven Standard, we deliver a written quote naming the brand, model, U-factor, installation method, and total price. If permits are required, the permit fee and inspection schedule are line-itemed. No allowances, no “plus materials,” no price that changes unless you sign a change order.
- 3
Order and scheduling. Once you approve the quote, we place the material order and schedule installation based on lead time and your availability. Standard vinyl and fiberglass units typically arrive in 3-4 weeks; custom or impact-rated products may take 8-12 weeks. We confirm the delivery date and installation window by text and email.
- 4
Installation with documented progress. Our crew arrives uniformed and background-checked, with the written scope, photo record from assessment, and installation checklist. We protect floors and furniture, remove existing units, install and level new ones with proper shimming and fastening, apply sealant and insulation, and finish with interior and exterior trim. Progress photos are taken at rough-in and final, and added to your project record.
- 5
Final inspection, walkthrough, and warranty documentation. We operate every window and door with you, verify lock function and weatherstrip contact, and note any touch-up items. The 365-Day Done Right Promise is activated on completion, and you receive the written warranty, final photo record, and maintenance guidance by email. If permits were pulled, we schedule the inspector and meet them on your behalf.
How Much Does Windows & Doors Cost in Cupertino?
A typical window replacement project in Cupertino runs $4,500-$15,000 for a whole house, depending on the number of openings, material, and whether any structural modification is needed. Impact window installation ranges from $8,000-$25,000 for the same scope due to the heavier glass and reinforced frames. Single window or door replacements are quoted per opening: a standard double-hung vinyl window typically falls between $650 and $1,400 installed, while a 6-foot sliding patio door runs $1,800-$4,500.
Several factors move the price within these ranges. Material is the largest: vinyl is the most economical, fiberglass offers thermal performance and paintability, and aluminum-clad or solid wood commands a premium. Size and operating style matter - a fixed picture window costs less than a casement of the same dimension because there’s no hardware or weatherstrip system. Structural work, such as enlarging an opening or adding a header, is quoted separately and only after we verify the wall’s load path. In Cupertino’s Eichler and ranch neighborhoods, we often find insufficient headers above original sliding glass doors; we note this during assessment and include the remediation in our flat price rather than discovering it mid-project.
To avoid overpaying, compare quotes line for line on the same brand and model, not just the bottom number. A lower quote may use a different glass package, omit permit costs, or assume the existing frame is reusable when it isn’t. We offer a Free Second Opinion on any written estimate - bring a competitor’s quote and we’ll review it item by item at no charge.
Our free estimate includes the on-site assessment, photo record, written scope, and flat price. There is no charge for the visit and no obligation to proceed. Call (669) 202-9618 to schedule.
Windows & Doors Near Cupertino - Our Service Area
Rowan Construction Group serves Cupertino and the surrounding Santa Clara Valley communities including Windows & Doors in Saratoga, Windows & Doors in Los Altos, Sunnyvale, Santa Clara, Campbell, Mountain View, Palo Alto, Los Gatos, Milpitas, Menlo Park, and San Jose. Most Cupertino appointments are scheduled within 3-5 business days, with installation typically starting 3-4 weeks after quote approval for standard products. Crews are dispatched from our local operations, not routed from distant yards, which keeps response times predictable and allows same-day revisits if a detail needs attention.
Serving Cupertino, CA - Our Local Coverage Area
We’re based in the Cupertino area and know this community well, and we also serve Windows & Doors - Mountain View. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Windows & Doors in Cupertino
Our service covers assessment, measurement, material supply, installation, trim, sealant, cleanup, and warranty documentation for windows and doors of all types. We also pull permits when required, meet inspectors, and provide a documented photo record of existing conditions and completed work as a standard deliverable.
A single window or door replacement is usually completed in one day; a whole-house window project typically takes 2-4 days depending on the number of openings and any structural modifications. Custom or impact-rated products require 8-12 weeks for manufacturing before installation can begin. We build this timeline into our written schedule with specific start and completion dates.
Whole-house window replacement in Cupertino typically costs $4,500-$15,000, with per-opening prices ranging from $650 for standard vinyl double-hungs to $1,400-plus for large or specialty units. Impact windows run $8,000-$25,000 for a full home. Call (669) 202-9618 for an exact quote - estimates are free.
Yes, we are an authorized installer for all four brands and maintain active supplier relationships, technical documentation, and common replacement parts for each. We can also service, repair, or replace windows and doors from any other manufacturer.
We do not advertise emergency dispatch for planned installation work, but we do prioritize security-compromised situations such as broken glass or failed locks that leave a home exposed. A live person answers calls 24/7 and can schedule the earliest available crew, typically within 24-48 hours for Cupertino addresses. For true emergencies involving personal safety, we recommend contacting local authorities first.
Every installation is backed by our 365-Day Done Right Promise: if it is not done right, Rowan makes it right, with the terms printed and available for review, not hidden in an asterisk. Manufacturer warranties on the window or door unit itself vary by brand and are passed through in full; we register the warranty on your behalf and provide the documentation.
Clear a 3-foot path around each opening inside and out, remove window treatments and wall hangings near the work area, and secure pets in a separate room. We protect floors and furniture with drop cloths and move heavy items if needed, but the work proceeds faster when the space is ready. We’ll confirm any specific preparation by text the day before installation.
Schedule Your Windows & Doors Service in Cupertino Today
Call (669) 202-9618 to schedule your free estimate. We’ll arrive on time, measure carefully, photograph the existing condition, and deliver a flat written price before any work begins. That’s Clause 1 of The Haven Standard, and it’s how we’ve kept over 4,000 projects within a few percent of the agreed number since 2007. No obligation, no pressure, no surprises.
Written by Grant Rowan, Owner at Rowan Construction Group, serving Cupertino since 2007.