Cost for home addition

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Posted by: from Port Coquitlam
1/5/2016 at 12:27:05 PM


I would like to make some additional space in my two-storied home in Port Coquitlam, BC. I would like to add a downstairs bedroom where currently the deck is. My house is 35 years old, in good condition (other than the deck itself). What I want is a bedroom with a small closet and a basic bathroom with shower (no bathtub), toilet and sink. I have no measurement in mind but the bedroom should fit a queen bed with three sides open (bed not pushed against the wall on one of the sides). Since I have the living room downstairs no need for huge space for extra sittings etc. but one or two windows and a door to go to the backyard is required.

At this time, I am only looking for a rough idea of how much I should expect to spend. Don't need anything on the upper floor.

Thank you.

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Date/Time1/5/2016 at 1:33:31 PM

Hi There,

To add a bedroom downstairs with a bathroom has a lot of details needed to get a ball park number. Such as, will there need to be structural foundation poured for bedroom walls after deck has been removed. Is the plumbing located in a near by wall or will it have to be dug out to connect to main line. These two will be your major things to judge the scope of the work on as well as permits and electrical. It's hard to give a rough idea from a contractors perspective due to so many unknowns. Sometimes getting a contractor out to take a look is the best way of getting a rough assessment of what you're looking at.


Justin Endresen

Alair Homes Maple Ridge

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Date/Time1/5/2016 at 7:53:26 PM

The cost is normally 195.00 sq ft to build, or you can basically figure around 75000 with a basement and built to code.

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Date/Time1/8/2016 at 3:23:14 PM

Hi Moni,

This sounds like a pretty easy little addition. The costing for a project of this nature will come through design. We offer a of a full service Design&Build experience. A big part of what we do is identifying what your budget is and how we can utilize it to improve your home. The answer to your question, "how much will it cost" is relative to how much you want to invest in your home. It could cost as little as $70,000 or as much as $170,000.

Andrew from Kerr Construction

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