What replacement windows cost in LA, by frame material

Written and checked by the DuloCore research team. Last verified: November 11, 2026.

Before you collect quotes for a house in the City of Los Angeles, it helps to know what the published price guides say; this page backs up the estimator on our LA window replacement home page. None of the major cost publishers we checked gives a Los Angeles figure, so every number below is national and shown exactly as published.

Installed price per window, by frame

Each figure links to its source. HomeGuide prices are per window installed; Fixr prices are per window; This Old House reports the average its 2026 survey of 1,000 window customers paid per installed window.

Sources accessed Nov 11, 2026. HomeGuide page dated Feb 5, 2026; Fixr updated Jan 21, 2026; This Old House updated Aug 11, 2026.

Why the sources disagree

The two guides measure different things. HomeGuide says its costs run toward the top of the range for larger windows, custom sizes and premium wood, which is why its wood ceiling ($3,800) is far above Fixr's ($2,000). This Old House reports what real customers paid on average, $517 per window and $7,183 per project, so its figures sit low in both ranges. Fixr gives a national average of $800 per window, with most jobs between $450 and $1,200.

For a whole house, HomeGuide puts 10 to 15 windows at $4,500 to $22,500. This Old House found triple-pane glass packages averaged $609 per window in its 2026 survey.

Los Angeles costs the national guides leave out

• Permit and inspection. LADBS fees depend on the job; we have not printed one because we could not confirm a current fee schedule for this item today. See the LADBS Express Permits page.
• Bigger or moved openings. Changing a window's size, type or location needs plan check, and structural calculations from a licensed engineer or architect for buildings over one story or much larger openings, per LADBS. Details are on our permit page.
• Historic districts. HPOZ review may require board review or filing fees, according to LA City Planning.
• Fire zones. Very High Fire Hazard Severity Zones call for multi-pane glass with at least one tempered pane; see our glass rules page.
• Airport noise areas. Inside a designated airport noise boundary, LADBS requires replacement windows with a minimum Sound Transmission Class rating.

Subtract the rebate, if you qualify

LADWP pays $2.00 per square foot of qualifying window (LADWP Consumer Rebate Program, checked Nov 11, 2026). Ten windows measuring 36 by 48 inches are 12 square feet each, 120 square feet in total, so the rebate would be $240 at that rate. Set against the This Old House average project of $7,183, that is a modest but real discount, and it cannot exceed what you paid.