Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Door Installation Across Half Moon Bay
Door installation in Half Moon Bay carries a set of challenges most Bay Area contractors never see: salt fog that corrodes hardware within a few seasons, 40-to-50-year-old Oceana tract homes with original aluminum sliders hiding rotted framing, and tight lots where parking and staging matter as much as the door itself. We’ve worked these neighborhoods long enough to know what’s behind the trim before we pull it. If you’re planning an entry door, French door, or storm door replacement, call (903) 354-7134 and we’ll give you a written price before anything gets ordered.

Our Door Installation team serves all of Half Moon Bay, from the historic Spanishtown core down through Oceana and out toward the bluffs, and we schedule around the city’s noise and work-hour rules, not against them.
Why Westlight Windows & Doors Is Half Moon Bay’s Preferred Door Installation Company
Westlight Windows & Doors has been doing this since 2009, led by Owen Satterfield, and we’re an independently owned and operated Kingswell location offering Half Moon Bay Window Installation. That matters in a place like Half Moon Bay because the work here isn’t interchangeable with a job in, say, Millbrae. The marine layer sits over the coast longer than almost anywhere else in the Bay Area, and we’ve learned what that does to door frames, thresholds, and hardware over decades.
Every Half Moon Bay job runs on the Kingswell Guarantee: a written price before we start, a committed arrival window, a clean job site, and a written guarantee on the completed work. If something fails within the guarantee period, we come back and fix it at no charge. That’s the Kingswell Way: say the price before the work, show up in the window we gave, leave the place cleaner than we found it, put the guarantee in writing, and come back if it fails.
Owen and the team also staff their phones with a live person 24 hours a day, seven days a week. Not a voicemail box. When you call about a door that’s sticking, a threshold that’s corroded through, or a quote you want to understand line by line, a real human answers.
Exterior Door Installation in Half Moon Bay
Exterior Door Installation in Half Moon Bay is where we see the most hidden damage, and we’ll tell you that upfront because it affects the quote. Most entry door replacements on the coast run $1,800-$4,200 installed, depending on door material, hardware choice, and how much framing repair the opening needs. A straightforward slab swap on a newer home might land at the lower end. An Oceana-era home with rotted OSB around the original aluminum slider will land higher, and we’ll show you exactly why in the written estimate.
Framing Repairs and Rot Allowance
In Half Moon Bay’s persistent marine layer, salt fog wicks behind original aluminum slider frames and corrodes the OSB and redwood framing from the inside out. We include a rot allowance in nearly every exterior door quote here, because what looks like a simple door swap regularly turns into sistering framing, replacing sill plates, and flashing a new water-resistant barrier before the new door goes in. That’s the hidden-damage pattern we see far more often on the coast than in inland cities.
Marine-Grade Hardware Selection
A standard steel hinge or threshold will oxidize within a few seasons in Half Moon Bay’s salt fog. That’s why we spec stainless-steel hardware, fiberglass or clad-wood frames, and insulated glass units with low-e glass (a thin coating that reflects heat back into the room in winter and out in summer) on exterior door work here. It costs a bit more up front, but it’s the difference between a door that lasts 5 years and one that lasts 30.
French Door Installation in Half Moon Bay
French Door Installation in Half Moon Bay usually runs $2,400-$5,600 installed for a standard 6-foot double-door opening, with higher-end fiberglass or clad-wood units from brands like Therma-Tru pushing toward the top of that range. The cost depends on whether you’re replacing an existing French door (less framing work) or cutting a new opening (more, plus structural header work), and on how much rot the old unit left behind when it was pulled.
Historic Home Considerations
Half Moon Bay’s late-1800s and early-1900s Victorian-era wood-frame homes in the Spanishtown core often have non-standard rough openings. If you want a French door on a historic home without changing its look, we can match the sightlines and millwork profiles of the original, then swap in modern insulated glass and marine-grade hardware that reads period-correct from the street. The city’s design review process may apply, and we’ll walk you through it.

Coastal Weather Sealing
French doors are the weak point in any coastal home’s building envelope, and in Half Moon Bay the salt fog makes proper sealing non-negotiable. We use multi-point locking systems, compression weatherstripping, and stainless-steel tracks so the doors close tight against cold marine air and stay operable years after installation.
Trusted Brands We Service in Half Moon Bay
We carry eight manufacturer lines, and for Half Moon Bay’s coastal conditions we lean on a few specifically: CGI and CWS for impact-rated and marine-tested entry systems, ECO Window Systems for energy-efficient glass packages, and Therma-Tru for entry doors that hold up to salt exposure. We stock parts locally for these brands, which means when a Half Moon Bay customer calls about a hinge or threshold issue, we’re not waiting weeks on a distributor.
Common Door Installation Problems We See in Half Moon Bay Homes
- Hidden frame rot behind original aluminum sliders. In the Oceana tract, salt fog wicks behind the frames of 40-to-50-year-old sliders and corrodes the OSB and redwood framing from the inside out. The door looks fine until we pull it and find the jamb gone.
- Seized hardware and corroded thresholds. Non-marine fasteners and hinges oxidize within a few seasons in the persistent salt fog. We replace them with stainless steel so the door actually operates a decade from now.
- Tight lots and shared-wall access issues. In the historic Spanishtown core and parts of Oceana, staging and parking space is limited, and shared walls mean we have to coordinate noise and work hours with neighbors. We plan access before we quote.
- Thermally inadequate doors on older homes. Many original doors in Half Moon Bay are single-pane or early double-pane with failed seals. They leak heat into the cold marine air and let fog-driven moisture into the house.
Pricing for Door Installation in Half Moon Bay, CA
Here’s what you can expect to pay in Half Moon Bay specifically:
- Single entry door replacement: $1,800-$4,200 installed, depending on framing repairs and hardware spec.
- French door replacement (6-foot double): $2,400-$5,600 installed.
- Storm or exterior door addition: $900-$2,200 installed.
What moves the number: hidden rot in the rough opening, whether we’re cutting a new opening or replacing in kind, hardware grade (stainless vs. standard), and glass package (low-e, impact-rated, or standard insulated). Every quote is written and line-itemed before work starts, and we don’t revise it at the door. Call (903) 354-7134 for a free estimate on your specific opening.
We Also Serve Cities Near Half Moon Bay
Our Door Installation team covers the surrounding Peninsula communities too: El Granada, Burlingame, Millbrae, and Belmont. If you’re in one of those cities and dealing with the same salt-air door problems, the same written-price guarantee applies.
Serving Half Moon Bay, CA - Our Local Coverage Area
We’re based in the Half Moon Bay 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 Door Installation in Half Moon Bay
In most cases, replacing an existing exterior door with a same-size unit does not require a permit in Half Moon Bay, but cutting a new opening or adding a French door where none existed does, and the city’s design review process can apply to historic properties. We’ll tell you exactly what’s needed for your specific project before we quote. Call (903) 354-7134 and we’ll walk you through it.
Because the persistent salt fog wicks behind original aluminum slider frames and keeps the surrounding OSB and redwood framing damp for decades, causing rot that’s invisible until the old door comes out. We include a rot allowance in nearly every Half Moon Bay exterior door quote and show you photos of what we find before any repair work is done. For an exact scope on your opening, call (903) 354-7134.
Stainless-steel hinges, stainless-steel multi-point locks, and fiberglass or clad-wood frames hold up best against the coastal marine layer. Standard ferrous hardware will seize or oxidize within a few seasons here. We spec marine-grade hardware as the default on Half Moon Bay exterior door work because the alternative fails too fast to be worth installing.
Tight lots in the Spanishtown core and parts of Oceana mean we have to plan staging, parking, and work-hour coordination with neighbors before we quote. If access is limited, it can add to the labor line, and if shared walls are involved, we follow the city’s noise and work-hour rules closely. We’ll walk the site before we put the price in writing. Call (903) 354-7134 to schedule a walkthrough.
Yes, we can match the original millwork profiles and sightlines of a historic French door, then install modern insulated glass and stainless-steel hardware that reads period-correct from the street. We’ve done this in the Victorian-era homes of the Spanishtown core, where design review often applies. For a quote on your historic door, call (903) 354-7134.
Written by Owen Satterfield, Owner at Westlight Windows & Doors, serving Half Moon Bay and the surrounding Peninsula since 2009.










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