Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across Half Moon Bay
Window replacement in Half Moon Bay is not the same job it is ten miles inland. Our crews work here year-round and we know what the salt fog does to frames, hardware, and seals. If you live west of Highway 1, your windows are taking a beating that a house in Belmont or Millbrae will never see. A direct answer for anyone pricing the work: most full-frame replacements in Half Moon Bay run $900-$1,900 per window, inserts run $600-$1,200, and coastal-spec upgrades add $150-$400 per unit. Call (888) 635-0804 and we will give you a written line-item quote, no pressure and no change orders.
Why TruePane Windows & Doors Is Half Moon Bay’s Preferred Window Replacement Company
Dale Kessler founded TruePane in 2008 after years of watching out-of-true installs and voided warranties become the norm in this trade. The rule he keeps on the whiteboard is the one the company is named for: if the pane is not true, the job is not done. Half Moon Bay homeowners get the same standard on every visit, from the first measurement to the final walkthrough. Our technicians are background-checked and uniformed. They measure every opening twice. They quote manufacturer lines side by side on paper so you see exactly what you are buying. And both warranty layers get registered in writing before the truck leaves your driveway. That is the Window Replacement standard we hold, on every job, in every house, including yours.
We also know this stretch of coast the way a local should. The marine layer off Miramar Beach does not ease up because a house is newer. We see builder-grade aluminum frames pitting within five years on west-facing elevations. We see wood sashes swelling in June fog and sticking in place by August. Hiring a company that treats those conditions as the starting point, not a surprise, is the difference between doing this job once and doing it twice-and why the right glass systems for Half Moon Bay matter on every project we take on.
Our Window Replacement Services in Half Moon Bay
Full Frame Replacement
Full frame replacement means the entire window comes out, including the frame, trim, and flashing. In Half Moon Bay this is frequently the right call because the original opening is often compromised by years of fog wicking into unsealed wood. We rebuild the rough opening with fresh flashing and square it true before the new unit goes in. Most full-frame jobs in Half Moon Bay run $900-$1,900 per window depending on size and material. Coastal-spec frames add to that number, and in this town we think they should be the default. Half Moon Bay homeowners deserve a window that will still operate after a decade of salt air.

Insert Window Replacement
When the original frame is still square and solid, an insert window fits inside it and saves the surrounding trim and interior work. This is common in the newer planned developments on the inland side of Highway 1 where frames are not yet rotted but seals have failed and glass is fogged. Typical insert replacement in Half Moon Bay runs $600-$1,200 per window. It is faster and cleaner than a full-frame job. But we will not recommend an insert if the underlying frame has rot or corrosion; we say so on paper and you decide.

Storm Window Replacement
Storm windows are not a big part of the Half Moon Bay market the way they are in colder climates, but some older beach cottages still have exterior storm units that protect original single-pane sashes. We replace those when the frames are still worth saving. The problem we usually see is the storm unit’s hardware seizing up from salt corrosion. New stainless hardware and marine-anodized aluminum solve that for good. The job is typically smaller and less expensive than a full-frame replacement, and we quote it the same way: on paper, line by line.

Energy-Efficient Upgrade
Half Moon Bay cools down at night, but the fog does not make your house energy efficient. Original single-pane and failed double-pane windows lose heat all year. Upgrading to low-E double-pane or triple-pane units with argon fill cuts that loss and, just as important here, reduces the condensation that feeds mold and rot around window frames. Most energy-efficient window replacements in Half Moon Bay run $800-$1,700 per window for full-frame work. We will sit with you and compare glass packages side by side so the efficiency claim is not a guess.

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.
Trusted Brands We Service in Half Moon Bay
We install and service windows from PGT, CGI, and ES Windows among others, and we are an authorized installer for more than a dozen manufacturer lines. That matters in Half Moon Bay because the right frame material and hardware spec change once you are west of Highway 1. We keep the local parts inventory and know which glass packages hold their seal in marine air. When you call us about a fogged pane or a seized crank, we do not have to special-order everything from a warehouse and wait two weeks.
Common Window Replacement Problems We See in Half Moon Bay Homes
- Oxidized powder-coated aluminum frames. West-facing properties near Miramar Beach and the bluffs show white oxidation blooms and pitting along the jamb and sill within three to five years. Standard builder-grade aluminum is not built for this environment, and once pitting starts, the frame can not be saved.
- Swollen and rotted wood sashes. The beach cottages built in the 1940s and 1950s near the shoreline still have original single-pane wood double-hungs. Fog-driven moisture makes the sash swell and stick seasonally, then rot where the end grain touches the sill. By the time a homeowner calls, the bottom rail is often gone.
- Corroded hardware and seized track rollers. Standard zinc-plated screws and carbon steel rollers begin rusting within a year of constant salt air exposure. Sliders and casement cranks fail long before the glass does. We swap every piece of residential hardware for 316 stainless or marine-grade equivalents on coastal jobs.
- Fogged glass and failed seals. Seal failure shows up as condensation between the panes. In Half Moon Bay it is more common because temperature swings and constant humidity stress the sealant from the first season. A fogged pane can sometimes be reglazed, but when the frame is also compromised, replacement is the honest answer.
Pricing for Window Replacement in Half Moon Bay, CA
A typical full-frame window replacement in Half Moon Bay runs $900-$1,900 per window. Inserts run $600-$1,200. Energy-efficient upgrades with low-E glass add $150-$400 per unit depending on the glass package. The coastal-spec materials we recommend west of Highway 1, marine-anodized aluminum or fiberglass, add $150-$400 per opening over standard aluminum. That price gap is the difference between a window that looks good for five years and one that survives twenty. The cheap inland-spec window often costs more within a decade because you pay for the job twice. We quote everything in writing, line by line, before we start. Call (888) 635-0804 to schedule your free estimate.
| Service Type | Typical Range in Half Moon Bay |
|---|---|
| Full Frame Replacement | $900-$1,900 per window |
| Insert Window Replacement | $600-$1,200 per window |
| Energy-Efficient Upgrade (low-E, argon) | $800-$1,700 per window (full-frame) |
| Coastal-Spec Frame Upgrade (marine anodized or fiberglass) | Add $150-$400 per opening |
We Also Serve Cities Near Half Moon Bay
Our crews cover the entire Half Moon Bay coast and the surrounding peninsula. We serve El Granada just north of the harbor, plus Burlingame, Millbrae, and Belmont for homeowners who want the same Window Replacement standard without the coastal upcharge drama. Wherever you are, the same TruePane rule 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 - Window Replacement in Half Moon Bay
Because the marine layer off Miramar Beach carries salt particles that settle on window frames constantly, and standard powder coating does not hold up to that. West-facing elevations show oxidation blooms and pitting within three to five years. The fix is marine-anodized aluminum or fiberglass frames. Call (888) 635-0804 and we will show you the difference on paper before you spend a dollar.
You can sometimes keep them if the wood is still sound and the only issue is paint and glazing putty. But on the older beach cottages near the shoreline, we usually find the bottom rails have rotted from decades of fog wicking into unsealed end grain. We will tell you honestly whether restoration makes sense or replacement is the better value.
No. Impact-rated glazing is required for coastal storm zones and is a smart upgrade for west-facing bluff properties, but houses east of Highway 1 are not in a mandatory impact zone. What east-side homes do need is a frame material that will not corrode from the fog that still reaches them most mornings. We can quote both options side by side so you decide with the numbers in front of you.
Because fog still lets long-wave heat through and because failed window seals in Half Moon Bay lose whatever insulation value the glass once had. Original single-pane windows in older homes leak heat all year. Upgrading to low-E double-pane units cuts that loss and reduces the condensation that feeds mold around window frames. A free estimate will show you exactly where your windows are losing energy.
Sometimes yes, the failed glass unit can be replaced while keeping the frame. That is a glass-only repair, not a full window replacement. But if the frame is aluminum with oxidation or wood with rot, the repair will not last. We will inspect the unit and tell you straight which option is right for your house. Call (888) 635-0804 and we will come look.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Half Moon Bay with the Done Right Promise and The Keystone Standard.



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