How much does window replacement cost in Fairfax?

Window replacement in Fairfax typically costs $300–$1,200 per window installed, depending on size, material, and style. A full-house replacement (10–15 windows) averages $5,000–$15,000. Energy-efficient dual-pane windows qualify for federal tax credits up to $600.

What are the best windows for Fairfax's climate?

For Fairfax's hot summers and mild winters, we recommend dual-pane vinyl or fiberglass windows with Low-E coating and argon gas fill. These reduce heat gain by up to 70% and can lower cooling costs by 15–25%.

How much does window repair cost?

Window repair in Fairfax costs $100–$500 depending on the issue. Broken glass replacement runs $100–$300, seal repair $150–$350, and hardware fixes $75–$200.

Can foggy windows be repaired?

Yes, foggy windows caused by seal failure can often be repaired by replacing the insulated glass unit (IGU) without replacing the entire window frame, saving 50–70% vs full replacement.

How much does new window installation cost?

New window installation with framing costs $500–$2,000 per window in the Fairfax area. This includes structural modifications, framing, flashing, insulation, and interior/exterior trim work.

Do I need a permit for window installation?

In most Fairfax-area municipalities, permits are required when changing the size of a window opening or adding new windows. Replacement of same-size windows typically does not require a permit. We handle all permitting.

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Lock & Key Locksmith Fairfax

4.6★★★★★(11 Google reviews)

30NorCal Score· Standard

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Business Information

Address: 61 Broadway, Fairfax, CA 94930, USAGet Directions
Phone: (415) 251-6511
Trade: Windows
License: C-17 (Glazing)
Area: Fairfax, CA

Business Hours

Mon	Open 24 hours
Tue	Open 24 hours
Wed(Today)	Open 24 hours
Thu	Open 24 hours
Fri	Open 24 hours
Sat	Open 24 hours
Sun	Open 24 hours

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Reviews

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3 Google

★★★★★Curtis Greenaway5 months agovia Google

Needed help and tried Lock & Key Locksmith Fairfax for cable repair and I'm super satisfied. genuinely professional, same day I called. Easy to reach when I called. Don't hesitate to call them.

★☆☆☆☆Nicole La year agovia Google

This is a scammer locksmith, do not use them. They did the job but charged 5x what they had quoted, and refused to leave until they received payment. When I complained they refunded some; then later when I started asking too many questions (via text) they refunded an additional amount. It was my fault for not noticing there were no reviews and that the address provided is actually a toy shop and a dentist. The weird thing is they actually replaced the lock and the guy was quite nice. Now I have to replace the lock they replaced, lock my credit card, and do identity theft monitoring.

★★★★★jada evansa year agovia Google

Lock & key locksmith Fairfax is a great company. I loved how friendly and helpful the workers was. It was truly a great experience

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About Lock & Key Locksmith Fairfax

Lock & Key Locksmith Fairfax is a windows contractor serving Fairfax, CA. With a 4.6-star Google rating from 11 reviews, they are a well-regarded windows professional in the Fairfax community. Contact them directly or request a free quote through NorCal Repairs.

Windows Services in Fairfax

Window Replacement$300–$1,200 per window Window Repair$100–$50024/7 Emergency Window Installation$500–$2,000 per window

Service Area

Lock & Key Locksmith Fairfax serves Fairfax and the surrounding areas:

Fairfax San Rafael Novato Mill Valley Tiburon Corte Madera Larkspur

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