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Window and door replacement and installation in Mill Valley

AK Windows has completed many window and door projects in Mill Valley and across the North Bay, and we love working here. Our crews are in the area every week, our customers rate us 5.0 on Google and Yelp, and we will be glad to come out to your home.

Andersen Certified Contractor | 5.0 on Yelp and Google | Family-owned, 10121 Imperial Ave, Ste D, Cupertino | California contractor license 1071859 | We install Andersen, Milgard and Simonton

What the houses here are like

Mill Valley's median house dates to 1961 and roughly half predate 1960. Damp shade, redwood cover and older wood sashes are a hard combination, and rot at the sill is the normal finding rather than the exception. Expect custom sizes and expect at least some openings to need repair to the frame before the new unit goes in.

  • Median year built: 1961
  • Built before 1980: 80 percent
  • Built before 1960: 48 percent
  • Owner-occupied: 67 percent
  • Homes sold in the last year: 342

Housing figures from the Census American Community Survey 2023 and Redfin closed sales, for ZIP 94941.

What people here call us about

In Mill Valley we ask about access before we ask about windows. Damp shade, redwoods and sixty-year-old wood mean rot at the sill is the normal finding rather than the exception, and a house on a slope under trees is not a ladder job. Expect custom sizes, and expect some frame repair before a new unit can go in.

What we do in Mill Valley

  • New window and door installation
  • Custom-sized windows for openings that are no longer square
  • Wood window replacement, including repair to the sill or frame where it has gone soft
  • Whole-house replacement, and single openings when that is what you need
  • Entry, patio and French doors, in Andersen, Milgard and Simonton

How a job goes

  1. We come out and quote. We look at the openings and give you a price. The visit and the measurement are free. Our crews work in Mill Valley every week, so a visit is easy to arrange.
  2. We measure and order. The windows are ordered to your openings, not to a catalogue size.
  3. We install and finish. Install, trim and clean up.
  4. We stay reachable. After the job is done you still have our number.

Ask for a free measurement

Tell us what needs doing in Mill Valley and we will call you back the same day. Call (408) 208-5055.

Other towns we work in

All twenty towns we cover

Contact Us

10121 Imperial Ave, Ste D, Cupertino, CA 95014

© 2026 AK Windows Inc. California contractor license 1071859, C17 Glazing.

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