Do You Need a Permit to Replace Windows in Sacramento?

Window permits surprise a lot of people because the job looks simple from the outside. A window comes out, a window goes in. But a window is part of how your house handles heat, how people get out of a bedroom in a fire and, in some neighborhoods, how the street looks. That is what the permit is about.

What the rules say in Sacramento

Unincorporated Sacramento County: the County's building department states plainly that a permit has been required to replace windows since January 1, 2010, and that it covers both retrofit and cut-in window and door replacement.

City of Sacramento: the City's Community Development Department publishes window replacement guidelines for its building permit process, and its planning department has a separate design review exemption form for window and door replacements. That exemption form cannot be used in historic districts or on historic landmarks.

Rules and forms get updated. For your specific address, check with the City of Sacramento Community Development Department or Sacramento County Building Permits and Inspection, or ask us and we will tell you what your job needs.

1. Energy: the sticker on the glass

California's energy code, Title 24, sets performance limits for replacement windows. You will see two numbers on the NFRC sticker that comes on every new window:

• U-factor is how easily heat moves through the window. Lower is better.
• SHGC, the solar heat gain coefficient, is how much of the sun's heat gets through the glass. In a Sacramento summer, lower is better.

For reference, under the code cycle that ran through 2025, replacement windows in Sacramento's climate zone had to come in at a U-factor of 0.30 or lower and an SHGC of 0.23 or lower, with looser limits when less than 75 square feet of windows was being replaced. The code is updated every three years, and the 2025 Energy Code took effect on January 1, 2026, which is why we check the sticker on every window against the current requirement before we order. Leave those stickers on until the inspector has seen them.

2. Bedroom windows are escape routes

A bedroom window has to be big enough to climb out of. For new construction, the City's guidelines spell out a clear opening of at least 5.7 square feet (5 square feet at grade floor), at least 24 inches high and 20 inches wide, with the sill no more than 44 inches above the floor.

Retrofit windows matter here because a new frame installed inside the old one makes the opening a little smaller. The City's guidelines allow minor reductions in the clear opening for retrofit windows in existing homes, and they let the work reference the code that applied when the house was originally permitted, as long as that is documented in the permit. Switching from a single hung window to a slider, or the other way around, also changes how much of the opening actually opens. We check this before we order, not after.

3. Safety glass in the right places

Certain locations require tempered safety glass: glass in and next to doors, large panes close to the floor, glass near tubs and showers, and along stairways. The new window has to meet that, and the inspector will look for the small tempered stamp in the corner of the glass.

Retrofit or new construction windows

A retrofit window fits inside your existing frame. The stucco and siding stay put, which keeps the job faster and cleaner. A new construction or nail fin window replaces the whole frame, which means opening up the wall around it. It is the right choice when the old frame is damaged or you are remodeling anyway. Both are window replacements, and both go through the permit process.

Retrofit and full frame installs both count as window replacement.

Historic districts

If your house is in one of Sacramento's historic districts or is a landmark, window changes get a closer look from the City's preservation staff, and the design review exemption does not apply. We wrote a whole post on it: replacing windows in a Sacramento historic district.

What about just replacing the glass?

Replacing a broken pane or a foggy dual pane unit in your existing frame is a repair, not a new window. Because the window itself stays, the questions above about opening size, frame style and street appearance mostly do not come up. We will tell you up front if your specific job needs anything filed. More on that repair in can you replace just the glass in a double pane window.

Who pulls the permit?

Normally the contractor does, and the price should say whether it is included. Ask. Windows replaced without a permit tend to come up later, during a home inspection or sale, when they are a lot harder to fix. Capital Glass & Construction is licensed and insured, and we will walk you through what your job needs.