San Francisco Window Shop · CA CSLB #1094821

Windows built, restored, and tuned for San Francisco.

We supply custom steel and Douglas fir windows, repair 1906 to 1929 wood sashes, and stop coastal drafts, window rattles, and street noise across the city.

0.18 U-FactorCoastal thermal glazing
Up to 45 dBAcoustic street dampening
1,420+ sashesRestored in SF since 2014
Steel-framed casement windows overlooking San Francisco morning fog
Pacific Heights casement installation Thermally broken steel, STC 44

Three ways we work on your windows

Most San Francisco homes do not need full replacement. Sometimes a 1912 sash just needs new weights and concealed weatherstripping. Other times, a coastal facade needs marine-grade steel and laminated glass.

Architectural window installation

How much difference does a proper seal make?

Compare an unrestored 1910 wood sash, a tuned and weatherstripped frame, and an acoustic triple-pane unit. Turn on the exterior audio to hear how wind and traffic drop as the seal closes.

Seal compression & glass rating 68%

39 dB
Indoor sound level
0.09 cfm
Air leak per sq ft
R-3.8
Thermal rating
Simulated SF wind & foghorn audio
Cross-section detail ASTM E283 / E90
OUTSIDE (WIND & FOG) INSIDE (ROOM) ACOUSTIC PVB + ARGON

Notice how the perimeter gasket closes against the sash rail as compression increases.

Built for your specific microclimate

A window spec that holds up in sunny Noe Valley can corrode in Sea Cliff within four winters. Pick a neighborhood to see what we install there.

Conditions:

Recommended build:

Target U-Factor
Sound Rating
Hardware
Finish

Rough estimate & on-site inspection

Every job starts with an in-person check of your frames, balances, and sill condition. The $120 inspection fee is credited in full toward any work you approve.

What do you need?
How many windows? 6 windows
Glass & seal grade
Estimated project range
$1,700 – $2,100
Thermal camera & draft checkIncluded
SF Planning / historic guidanceIncluded
5-year seal & hardware warrantyIncluded
Interior dust maskingHEPA sealed