Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterFast, Reliable Door Installation Across Redwood City
Door installation in Redwood City runs $1,200 to $4,800 for a standard replacement entry door, and $2,800 to $9,500 for French or double door systems with full frame work. Sightline Windows & Doors serves every Redwood City neighborhood, from the Bayshore flatlands to Farm Hill and Emerald Hills, with written pricing before any tool is lifted. Call (509) 265-6387 to schedule a free measured survey. We’ll hand you a written quote you keep, and the final invoice will match that document.
Why Sightline Windows & Doors Is Redwood City’s Preferred Door Installation Company
Redwood City homeowners call us because our paperwork holds up. Every door installation starts with a measured survey the customer keeps. The written quote cannot differ from that survey. That’s Haven Clause 1: Have it in writing. It’s not a promotion. It’s how we’ve installed 18,000+ openings since 2012, each one with a price before work started and a documented photo record when it finished.
Crews arrive background-checked, uniformed, and identified by license number before they step on your property. That’s Haven Clause 3: Verified Crews. The person on the record is the person at your door. Sonia Raman leads Sightline Windows & Doors, and the 365-Day Done Right Promise is stamped on every job we complete in Redwood City. If it’s not done right, we make it right. Written into the standard, not a courtesy.
Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and crews serve Redwood City locally. We answer the phone with a live person around the clock, not a voicemail queue. Bring us a competitor’s written estimate and we’ll review it at no charge. That’s standard practice for our Door Installation team.
Our Door Installation Services in Redwood City
Entry Doors
Entry door replacement in Redwood City typically runs $1,200 to $4,800 depending on door slab material, frame condition, and hardware selection. Mid-century ranch homes across the flatlands often still carry original hollow-core doors with aluminum thresholds that have oxidized from salt air off the Port of Redwood City. We specify Therma-Tru entry systems with stainless steel hinges and pressure-treated jamb lumber when marine humidity is a factor, and we document every frame reading in the written scope before installation begins.
Hurricane-Proof Front & Entry Doors
Impact-rated front doors in Redwood City run $2,500 to $7,200 installed, with glazing upgrades adding $400 to $1,800 per lite depending on size. While Redwood City doesn’t sit on the hurricane coast, impact-rated doors do double duty here: they resist forced entry and reduce solar heat gain when specified with low-SHGC glazing. On west-facing entries, an impact-rated door from PGT or CGI with the right glass package drops indoor temperature measurably during summer heat spikes. We walk you through U-factor and SHGC numbers in plain English before you sign anything.
French & Double Doors
French door installation in Redwood City runs $2,800 to $9,500, with the spread driven by opening width, sightline configuration, and whether the existing header needs reinforcement. We see warped and binding French doors on west-facing hillside lots in Farm Hill and Emerald Hills regularly. Intense afternoon solar heat gain on 1950s and 60s ranch stock causes the door panels to expand unevenly against aluminum frames. The fix is often a full frame replacement with pressure-treated lumber and a properly flashed sill, not just new slabs.
Replacement Doors
Replacement door work in Redwood City starts at $900 for a basic slab swap and $1,600 for a full frame-and-jamb replacement. Homes near the Bayshore flatlands need different hardware than homes two miles west in the hills. Stainless steel hinges, marine-grade thresholds, and corner-sealed frames are standard practice on the east side, where chronic salt air from the Port shipping channel accelerates oxidation on steel components within 15 to 20 years. Hillside jobs rarely show the same failure pattern, but do show sun-driven warping. We scope each door for the specific microclimate it faces, then write the price.
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.
BeforeAfterTrusted Brands We Service in Redwood City
We install and service doors from Therma-Tru, ViewLux, PGT, CGI, and CWS, specified by what your opening requires rather than what’s sitting in a warehouse. For Redwood City’s Bayshore flatlands, we lean toward CGI and PGT impact-rated systems with stainless hardware. For hillside lots with heavy west-facing sun, we specify ViewLux or Therma-Tru lines with low-SHGC glazing. You’ll see the performance tier and price range for each option in your written quote, with no margin-driven upselling.
Common Door Installation Problems We See in Redwood City Homes
- Salt-air corrosion on Bayshore hardware. Hinges, thresholds, and steel door frames on flatland homes near the Port of Redwood City oxidize fast. We replaced a 1960s hollow-core exterior door on a ranch near the Bayshore where the aluminum threshold had oxidized so badly the door no longer sealed. Our crew installed a Therma-Tru entry door with impact-rated glazing, stainless steel hinges, and a reframed jamb with pressure-treated lumber to handle the marine humidity.
- Warped French doors on west-facing hillside lots. Ranch homes in Farm Hill and Emerald Hills catch intense afternoon sun that foggier cities like Menlo Park and San Carlos never see for long. Door panels expand, bind, and stop closing cleanly. The repair is rarely just a hinge adjustment. It’s a frame evaluation and often a full reflash of the sill opening.
- Improperly flashed entry doors on acreage lots. Larger properties with open grading and exposed slopes push water toward the structure during winter storms. A door that was never flashed correctly channels that water into the sill and starts dry rot within a few seasons. We check the rough opening, the drainage plane, and the sill pan before quoting, because the fix changes the scope.
- Original hollow-core doors that fail Title 24 standards. Much of Redwood City’s 1950s to 70s housing stock still carries original hollow-core exterior doors with single-pane sidelights. These openings were built for a different energy era. Replacement requires meeting current California Title 24 requirements for door U-factor and glazing, which our measured survey documents and prices explicitly.
Pricing for Door Installation in Redwood City, CA
| Service | Redwood City Price Range |
|---|---|
| Standard entry door replacement | $1,200 - $4,800 |
| Impact-rated entry door | $2,500 - $7,200 |
| French / double door installation | $2,800 - $9,500 |
| Basic slab swap | $900 - $1,600 |
| Full frame and jamb replacement | $1,600 - $3,400 |
| Storm / exterior door | $1,400 - $3,800 |
What moves the number in Redwood City: whether the opening sits on the Bayshore flatlands or in the hills, what the existing frame looks like once we open it up, whether the property is in unincorporated San Mateo County or within city limits, and what glazing package the west-facing exposure demands. We write all of it down before you pay a dollar. Call (509) 265-6387 for your free measured survey and written estimate.
Door Installation on Acreage Lots: What Changes in Redwood City
Redwood City’s ‘Climate Best by Government Test’ designation is more than a slogan. It’s a measurable condition that changes how doors perform on the ground. South- and west-facing doors here absorb more solar heat gain than identical doors in fog-bound San Carlos or Menlo Park just a few miles away. At the same time, Bayshore flatland homes near the Port of Redwood City, the only deepwater port south of San Francisco, deal with chronic salt-air corrosion that inland suburbs don’t experience. A door project on the east side of Redwood City has different hardware requirements than the same project in Emerald Hills. We scope both extremes before quoting.
For larger lots and acreage properties, permitting often moves from City of Redwood City to San Mateo County. That changes timeline and paperwork. Setbacks from septic systems and wells can dictate where an access door goes on a detached structure. Long material hauls and equipment access on open lots affect labor. Outbuildings, workshops, and detached ADUs each have their own door requirements under California Title 24, and grading and drainage on an open lot determine how we flash a threshold so winter stormwater doesn’t find its way inside. We walk the property, read the grade, and write the scope. The price comes from the document, not the other way around.
We Also Serve Cities Near Redwood City
Sightline Windows & Doors serves Door Installation in Redwood City and the surrounding Peninsula. That includes Menlo Park, San Carlos, Palo Alto, and Belmont. If your property sits near the Redwood City line, call us and we’ll confirm coverage before you spend time on a quote.
Serving Redwood City, CA - Our Local Coverage Area
We’re based in the Redwood City 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 - Door Installation in Redwood City
Salt air off the Port of Redwood City and the Bay shipping channel accelerates oxidation on steel hinges, thresholds, and door frames, and we routinely find Bayshore flatland doors with corroded hardware failing within 15 to 20 years. Hillside homes in Farm Hill and Emerald Hills sit above the marine layer and don’t see the same corrosion rate. The fix is stainless steel hardware and pressure-treated jamb lumber on Bayshore jobs, specified in the written quote before installation. Call (509) 265-6387 for an exact evaluation of your door hardware.
A large-lot door installation near Emerald Hills typically runs 15 to 30 percent higher than the same door on a standard Redwood City tract lot, because county permitting, longer material hauls, equipment access, and grading work all add scope. Detached ADUs, workshops, and outbuildings each require site-specific flashing and drainage work that a standard slab door on a city lot doesn’t need. We price each element in writing before work starts.
A direct slab-for-slab replacement with no structural change typically does not require a permit in unincorporated San Mateo County, but any change to the rough opening, header, or framing does. Redwood City proper follows the same pattern but has its own forms and fees. We pull permits and pass inspections when the scope requires them, and we document the permit in your written quote. Call (509) 265-6387 and we’ll confirm what applies to your property.
Choose a door with low-SHGC glazing, meaning a solar heat gain coefficient of 0.25 or lower, to cut afternoon heat gain on Redwood City’s west-facing openings. The ‘Climate Best by Government Test’ designation is real: west-facing doors here bake in summer, and the right glass package makes a measurable indoor difference. We specify ViewLux and PGT lines with low-SHGC options, and we explain the U-factor and SHGC numbers on your written quote in plain English.
Yes. We install impact-rated doors on detached ADUs, workshops, and outbuildings throughout Redwood City, including unincorporated San Mateo County parcels. The door must meet California Title 24 energy requirements for the structure type, and setbacks from septic systems and wells may dictate door placement. We evaluate the site, the structure, and the exposure, then write the price accordingly. Estimates are free. Call (509) 265-6387.
Written by Sonia Raman, Owner at Sightline Windows & Doors, serving Redwood City under the Haven Standard since 2012.
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