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 San Rafael
Window replacement in San Rafael costs between $650 and $2,400 per window for most homes in 94901, with full-frame work on hillside properties subject to Marin County WUI code running $1,400 to $3,100 per opening. The job usually takes one to two days for standard inserts and up to a week when we’re reframing multiple openings on an older ranch near Dominican. TruePane Windows & Doors has been doing this work in the Bay Area since 2008, and the San Rafael crews that roll out of our Fairfax staging yard know exactly which side of the 101 you’re on and what that means for your glass spec. Call (888) 635-0804 and a real person picks up, day or night.
Why TruePane Windows & Doors Is San Rafael’s Preferred Window Replacement Company
We’ve worked enough San Rafael jobs to know the city splits in two the moment you start talking window replacement. Hillside lots above the 101 corridor fall under Marin County’s Very High Fire Hazard Severity Zone rules, which means ember-resistant glazing and intumescent weatherstripping are not optional add-ons. Down in the Canal district, the fight is against salt air off San Rafael Bay eating untreated aluminum tracks in five to seven years. Most contractors either know hills or know flats. We do both, every week, and we quote both spec levels side by side on paper so you see exactly what each line item buys. On top of that, every job carries a Done Right Promise and The Keystone Standard: both manufacturer warranty layers registered in writing before the truck leaves your driveway. Dale Kessler founded this company on a simple rule: if the pane is not true, the job is not done.
Our San Rafael customers call because they want a company that’ll still answer the phone in thirty years. We hire local, train apprentices into journeymen, and send background-checked, uniformed technicians who measure every opening twice. No voicemail tree, no regional call center, no second appointment left hanging.
Our Window Replacement Services in San Rafael
Window Replacement - Full Frame Replacement
Full-frame replacement means the entire old window comes out, jamb and all, down to the rough opening. That’s what a 1950s ranch near Dominican needs when the wood jambs have rotted from decades of bay fog and condensation. In San Rafael, full-frame work on any hillside lot triggers the Marin County WUI review, so we spec tempered multi-pane glass and intumescent seals from the first quote. Expect $1,400 to $3,100 per opening depending on size, material, and whether the rough opening needs reframing. The advantage is airtight: you eliminate hidden rot, correct the rough opening, and meet code in one pass.

Insert Window Replacement
Inserts fit a new window inside the existing frame, which makes them faster and less invasive. They run $650 to $1,600 per opening in San Rafael and work best when the original frame is sound but the sashes and glazing are shot. We use fusion-welded vinyl frames with stainless hardware in the Canal district because untreated aluminum from an inland-spec insert will pit and bind within a decade. If your frames are straight and dry, inserts are the square deal. If the jamb has rot, we’ll tell you before we sell you anything.

Storm Window Replacement
Storm windows matter in San Rafael for a reason nobody talks about until November: the bay fog doesn’t just bring moisture, it brings cold air that settles in the inland valley and pushes through single-pane openings all winter. A good low-E storm unit adds a second air chamber and cuts condensation on the primary glass. We stock replacement storm sashes for common San Rafael rough openings and can custom-order for the odd mid-century sizes we see in the hillside neighborhoods. Most storm replacements run $350 to $800 per unit and go in same-visit.

Energy-Efficient Upgrade
San Rafael sits in one of Marin’s warmest inland valleys, running 10 to 15 degrees hotter on summer afternoons than Mill Valley or Sausalito. That heat loads up west-facing glass on the hillside homes above downtown. An energy-efficient upgrade swaps in dual-pane, low-E, argon-filled insulated glass units that hold the line on both the heat gain and the condensation that fogged your old seals. On a mid-century ranch near the Dominican University campus, a full upgrade typically runs $900 to $2,400 per window, and we register both warranty layers in writing before the job closes. The energy savings are real, but the bigger win is getting rid of the condensation that’s been eating your jambs.

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.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in San Rafael
We’re an authorized installer for more than a dozen manufacturer lines, and in San Rafael we lean on CGI and PGT for hillside WUI-compliant windows because their ember-resistance testing holds up to Marin County review. Down in the Canal, we specify ES Windows and ECO Window Systems for corrosion-resistant hardware and marine-grade finishes that salt air can’t chew through. We keep common parts and hardware for these lines stocked locally for San Rafael customers, so warranty callbacks and hardware swaps don’t wait on a freight truck from out of state.
Common Window Replacement Problems We See in San Rafael Homes
- Salt-air corrosion on aluminum tracks in the Canal district. Untreated inland-spec aluminum pits and binds within five to seven years of San Rafael Bay exposure. We pulled a 1960s wood-frame slider out of a Canal-area apartment on Kerner Boulevard last month: the original aluminum track had pitted so badly the sash wouldn’t close, and fog between the panes told us the insulated glass unit’s seal had failed - argon gone, U-factor effectively dead. Our crew replaced it with a fusion-welded vinyl frame, stainless jamb hardware, and low-E argon-filled glass sized for the non-standard rough opening, then flashed the perimeter with butyl tape to stop the moisture that had rotted the original jamb.
- Fogged double-pane units in Dominican-area ranches. Fog between the glass means the seal has failed and the argon fill escaped. The unit now performs barely better than a single pane while still collecting condensation that rots wood jambs. This is the most common repair call we get from 1950s and 1960s ranch homes east of downtown.
- WUI compliance failures on hillside lots above the 101. Homeowners swap in builder-grade single-pane units, the county flags it, and then there’s a stop-work order and a forced re-glaze with tempered multi-pane glass. It’s an expensive redo that a proper first quote avoids entirely.
- Non-standard rough openings on older homes. San Rafael’s pre-1970 stock rarely has square, modern rough openings. Inserts ordered off a big-box chart don’t fit, and the gaps get caulked instead of flashed. We measure twice and order true-to-opening units, which is the difference between a window that seals and one that leaks in the first winter storm.
Pricing for Window Replacement in San Rafael, CA
Here’s what we quote in San Rafael right now, based on recent jobs in 94901. Standard insert replacements run $650 to $1,600 per window. Full-frame replacements run $1,400 to $3,100 per opening, with the higher end reflecting hillside WUI-compliant multi-pane glass and intumescent sealing. Energy-efficient dual-pane upgrades run $900 to $2,400 per window. Storm window replacements run $350 to $800 per unit. The coastal-spec premium in the Canal district, meaning stainless hardware and marine-grade frame finishes, adds roughly 15 to 20 percent over an inland-spec window. The inland-spec version costs less upfront, but in five to seven years you’ll be replacing corroded tracks and binding sashes. In San Rafael’s zip code, the cheap spec costs more within a decade, every time.
| Service | Typical San Rafael Range |
|---|---|
| Insert Window Replacement | $650 - $1,600 per window |
| Full Frame Replacement | $1,400 - $3,100 per opening |
| Energy-Efficient Upgrade (dual-pane, low-E, argon) | $900 - $2,400 per window |
| Storm Window Replacement | $350 - $800 per unit |
Every quote is written, line-itemed, and fixed. No change orders unless you ask for something different. Call (888) 635-0804 for a free estimate, and a live person will schedule the measure.
We Also Serve Cities Near San Rafael
Our crews cover all of central Marin, so if you’re in Larkspur, Kentfield, Corte Madera, or San Anselmo, the same San Rafael team handles your window replacement with the same local knowledge and the same Done Right Promise. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, but the technicians who show up at your door live and work in Marin.
Serving San Rafael, CA - Our Local Coverage Area
We’re based in the San Rafael 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 San Rafael
Yes, if your property sits in the Very High Fire Hazard Severity Zone above the 101 corridor, Marin County requires Chapter 7A compliance on any window replacement, which means tempered multi-pane glazing and intumescent weatherstripping, not standard builder-grade glass. The change adds roughly 20 to 30 percent to the per-opening cost and often extends the permit timeline by one to two weeks. If you’re unsure whether your lot falls inside the zone, call (888) 635-0804 and we’ll check the county map before you spend a dollar. Estimates are free, and we’ll quote both the WUI-compliant spec and the standard spec side by side so you see the real difference.
If the aluminum frames are pitted or the sashes bind, glass-only replacement is throwing money at a frame that’s already failing, because San Rafael Bay salt air will keep corroding untreated aluminum regardless of the new glass. Most Canal-area homes we see need full-frame replacement with fusion-welded vinyl and stainless hardware to stop the corrosion cycle. If the frames are straight and the only issue is fogged glass, an IGU swap is viable and runs $300 to $700 per unit. Call (888) 635-0804 and we’ll inspect before recommending anything.
Because the window was likely an inland-spec unit with non-low-E glass and thin frame material, and in San Rafael’s inland-valley heat plus bay fog, that combination does almost nothing for thermal performance. You need low-E, argon-filled dual-pane glass matched to San Rafael’s specific heat and moisture conditions, not just any double-pane unit. Online vendors also rarely flash the perimeter correctly, so you’re losing conditioned air around the frame. We fix this with measured-to-opening units, butyl flashing, and a written warranty registration before we leave.
You can get insert replacements, but only if they’re ordered to the actual rough opening measurements, not pulled off a chart for a standard 1950s tract home, because San Rafael’s older ranches rarely have square or standard openings. Off-the-shelf inserts leave gaps that get caulked instead of flashed, and the first winter storm finds them. We measure every opening twice and order true-to-size units with butyl tape flashing on the perimeter, which is the difference between a window that seals and one that leaks in the first rain.
San Rafael’s inland valley runs 10 to 15 degrees hotter than coastal Marin on summer afternoons, and then the bay fog rolls in, and that temperature swing drives condensation into every weak seal and wood jamb it can find. Single-pane units and failed double-pane seals collect the moisture, which then rots wood jambs and rusts hardware. The fix is dual-pane, low-E, argon-filled glass with a properly flashed perimeter, because that combination eliminates the interior glass surface temperature that causes condensation in the first place.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving San Rafael and all of Marin County.



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