Building Code For Renovating Basement With Bedrooms?

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Posted by: from Enfield
1/9/2013 at 8:01:24 PM

We are looking into renovating our basement. There is currently no windows, only french doors to the outside.

To put bedrooms downstairs do you need windows or do you only need 2 exits out of a room?

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Date/Time1/9/2013 at 9:11:21 PM

Hi Heather:

The building code states that you must have an e gress window out of any bedroom. There must be an outside entrance directly to the bedroom, whether it be a doorway or e-gress window.

An e-gress window is one that measures 2'6" by 2'6" and of course is an opener. If you are below ground level, I would imagine that your particular area has a size requirement for the window well.

Best to check with them.


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Gus from Triworx Design in Vaughan
Date/Time1/10/2013 at 12:08:23 AM

Yes you will need windows.

Your best bet is to get a designer and have them get you a permit drawing.

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Date/Time1/10/2013 at 8:13:12 AM

Yes need windows. Refer to your city building code what is the min size and window well to do it proper.

Hope this help.


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Date/Time1/10/2013 at 8:35:55 AM

You would require a window proportionate to the size of the bedroom(s) to allow acceptable egress in the event of a fire.

Hope this answers your question.

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Dolphin Construction Co. in Ottawa
Date/Time1/10/2013 at 9:39:04 AM

You need a window in the bedroom!

Are you planing to rent this space?

Check local codes and do not listen to anybody who has a different idea than what is in code book.

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Date/Time1/10/2013 at 11:49:40 AM

Check with your local municipal building codes, but in Calgary you need a window with the proper egress.

A window needs to be big enough to get out of but also large enough for a fireman to get into. They feel that after a couple of minutes a person would be over come with smoke and would not be able to escape.

To calculate egress size it is (length in inches x height in inches) divided by 144 of opened window. It needs to equal larger than 3.80 (in Calgary) to be large enough.

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Date/Time1/10/2013 at 5:27:09 PM


Two exits out of the room is good but for light and safety reasons it is recommended to put in a window. You will also want a window in the summer for fresh air.



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Date/Time1/10/2013 at 8:38:40 PM

Every bedroom in a basement needs to have an egress window by code. The minimum size the window opening should be 18"x18", and should not be more than 4'5" off floor to the bottom of window.

Consider if you need to cut through concrete, wood, and/or what type of siding is on the exterior of the house, to add the windows.

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Date/Time1/12/2013 at 9:10:08 PM

Yes, you will require a window with a minimum of 3.2sqft of egress if you will refer to that space as a bedroom.


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David from Chetco Homes in Fort Erie
Date/Time1/13/2013 at 10:53:46 AM

Code calls for a window in each bedroom. Must be big enough to get out in case of fire.

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Paul in Pickering
Date/Time11/13/2013 at 10:34:00 AM

This doc says code in Ontario says you need an egress window somewhere in the basement, NOT necessarily in the bedroom. How do I confirm this for Pickering?

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Paul in Pickering
Date/Time11/13/2013 at 11:24:43 AM

This doc says code in Ontario says you need an egress window somewhere in the basement, NOT necessarily in the bedroom. How do I confirm this for Pickering?

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