Costs for 400 sq ft addition, with garage below, in Calgary

Question Icon
Posted by: from Calgary
7/12/2016 at 12:50:24 AM

I am looking for a rough cost estimate to do a 400 square foot extension to a 1950s bungalow. The addition would extend the existing living room, as well as include a bedroom. Instead of a basement, I would like add an (partially) underground double garage below the addition (my lot is sloped).

I am interested in costs both with and without an ensuite bathroom for the bedroom (the bedroom would be located at the back of the addition and would not be adjacent to existing plumbing).

I would want to add a deck and patio doors off of the newly extended living room.

The house would require an electrical service upgrade (currently only 70 amps).

Thanks for any ballpark figures you can offer.

User Icon
Date/Time7/12/2016 at 3:10:20 PM

Cost to build a home addition vary from $200 per square foot on the cheapest end to $450 / sq. ft. or even more for custom top notch work. Accurate estimated can be provided only after analyzing architectural drawings with all technical details, calculating number of man-hours for completing the project and determining the total expenses for materials, fixtures and finishing products.

User Icon
Marco from Klopfholz Inc. in Calgary
Date/Time7/12/2016 at 9:44:10 PM


Our price range for additions are from 175 to 395.

A garage at 20 X 24 gives you some breathing space.

And based on the information provided you are looking at an additional 105 per sqft for a concrete garage

Based on the zoning in Calgary there is a wide range of additional cost for the permit and the structural drawings / engineering. Not sure why that is.

Search the TrustedPros directory and discover the best contractors in your area.

Find your home service pro
Great renovations start with a great contractor.

Since 2004, TrustedPros has been helping homeowners find the right contractor for their home improvements and repairs.

Post Your Project

Within hours you'll be comparing offers from top-rated professionals. It's free to post and you're under no obligation to hire.

Trustedpros Inc. does not warrant the accuracy, completeness, safety, legality or usefulness of any Content, or Whether Content is Current and up-to-date, and TrustedPros Inc. Shall have no liability whatsoever with respect to your use or reliance upon any content or for content being removed or otherwise ceasing to be available. Please refer to the terms and conditions of use of this websites for more details.

It appears you may be located in the US

TrustedPros is designed to deliver results targeted to your location.

Get Free Estimates

Post your project and compare offers from top-rated pros.