Window Replacement Los Angeles: $16,359 to $22,377 + Rebates

Los Angeles rows are local figures from Angi; Angi's per-window rows are unit prices by style or glass. The national row is labeled.

Do you need a permit to replace windows in Los Angeles?

Yes, but usually an over-the-counter one: LADBS lists a window and door change-out of the same size and type in residential buildings as an Express Permit, which needs no plan check. Angi says most same-opening replacements go through the e-Permit system, while changing a window's size or location needs plan check. Ask the installer to pull the permit in its name and to include the fee in the written price.

Title 24: what the inspector checks on new LA windows

California's 2025 Energy Code has applied to window work since January 1, 2026. Under the Energy Commission's fenestration installation certificate, installed windows must have a U-factor equal to or lower than the compliance form for the permit, the temporary NFRC labels stay on until the inspector verifies them, and a copy of the certificate stays with the permit. Read the label: a lower U-factor holds heat in or out better, and a lower solar heat gain coefficient blocks more sun.

LADWP rebate: $2 per square foot for windows

LADWP's Consumer Rebate Program fact sheet lists $2.00 per square foot for qualifying windows, and says to apply within 12 months of purchase. Keep the invoice with the window sizes on it; the rebate is figured by area, not by window count. The federal window tax credit ended for anything placed in service after December 31, 2025, the IRS says.

Lead paint in a city with a 1965 median home

The median Los Angeles home was built in 1965, the Census Bureau reports, which puts much of the city's housing inside the federal lead rule's 1978 cutoff. The EPA's Renovation, Repair and Painting rule says anyone paid to disturb paint in a home built before 1978 must be lead-safe certified, and the rule's minor repair exemption does not cover window replacement. The EPA estimates that about three-quarters of U.S. homes built before 1978 still contain some lead-based paint. Ask the installer how it contains dust before any sash is cut out.

Heat, sun and fire areas: choosing glass in Los Angeles

Downtown Los Angeles averages 25.6 days a year at or above 90 F in NOAA's 1991 to 2020 normals, so solar heat gain matters as much as insulation. Angi recommends metal frames with tempered or low-E glass in wildfire-prone areas and notes aluminum windows can last up to 40 years if maintained. ENERGY STAR says certified windows lower energy bills by an average of up to 13% when replacing single-pane windows. Frame prices nationally: window replacement cost.

How to hire a window installer in Los Angeles

California requires a CSLB license for any job of $1,000 or more, or any job that needs a permit, which in LA covers nearly every window replacement. Check the license on the CSLB site, get a written contract (required over $500), and do not pay more than $1,000 or 10% of the price up front, whichever is less. Angi adds that LA sales tax is 9.75%, so ask whether the quote includes it. Calls go to an independent company that serves your area and takes this kind of job (how calls work).

Rules, programs and conditions for window work in Los Angeles, from official city, state, Census and NOAA pages unless marked.

More Los Angeles home repair guides

Roofs: roof repair in Los Angeles. Cooling: AC installation in Los Angeles and HVAC repair in Los Angeles. Garage doors: garage door installation in Los Angeles. Pipes: plumber in Los Angeles. Compare window replacement in San Diego and window replacement in Sacramento. All prices: home repair costs.