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Posted on Jan 06, 2020 by Sam Heer

Are Building Permits Required When Replacing Your Windows?

When homeowners are planning to have their windows replaced, they often wonder to themselves if they need to obtain a building permit before the job begins. The answer to this question is yes, a building permit is required if you’re having the windows completely replaced, such as making the switch from casement to double-hung windows. However, if you’re merely swapping out parts such as the sashes, then a permit isn’t really required. But why exactly do you need a permit just to install new windows in your home?


Obtaining a permit for your window replacement project allows your local building department to oversee the job. One of the main reasons this is required is for protection, as the building code requires most windows to have tempered glass. That way, it’ll shatter instead of breaking into shards that can cause injuries to your home’s occupants.

Apart from that, permits also allow the building department to check if your replacement windows meet the egress requirements for height and width. That way, you and your family will be able to escape your home in the event of an emergency while rescue personnel will be able to come in and out through the windows if needed.

Planning Review

Depending on where you live, the city may also do a planning review of your window replacements. The reason for this is so they can check if the style is appropriate for your home so you can maintain not only its aesthetic appeal but the entire neighborhood’s as well.

Planning to install a new bay window in your home? Look no further than Renewal by Andersen® of Central Illinois, your number one service provider when it comes to window and door replacement projects. Give us a call at (866) 693-6707 or fill out our contact form to schedule a FREE consultation. We serve homeowners in Bloomington, Champaign, Galesburg and other nearby areas in IL.


"I would recommend RBA of Central Illinois for QUALITY windows and doors. Compared to our old cheap, thin vinyl windows, Andersen blows them away. You can easily tell by how well the sliding doors fit and close, and how heavy duty they are. We also cannot hear the wind rushing through the house in inclement weather anymore! And the black window frames we went with are amazing to look at. Aaron, Al, Darrell, and Cory all were professional and went all out to finish the job, given the weather they had to deal with. I would definitely recommend. They were also on top of communicating with me given the weather delays, and what I could expect for them coming out. Five stars!"

Eric L.

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