Cost to Build 2nd Storey Addition

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Posted by: from Ajax
4/17/2023 at 4:02:55 PM

I am wondering what the approx cost per sqf is to build a 2nd storey addition. The house is 750 sqf total. Looking to add 3 bedrooms and a washroom. Any questions, let me know.

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Date/Time4/17/2023 at 11:55:00 PM

I'd ballpark it at 300/sqft.

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Date/Time4/18/2023 at 10:15:17 AM

About $260/sqft

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Micheal from T.S.A TSAGROUP in Surrey
Date/Time4/18/2023 at 12:25:48 PM

Hello Frank.

To be sure its not as simple as posting a price per sq/ft there are a lot of questions to be answered before being able to offer a number in your area.

$165,000 to $200,000 would be my best guest. Not sure if that helps you. Good luck!

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Date/Time4/19/2023 at 12:02:05 PM

You will be looking at from $250 sq/ft min. You need a "development permit" 1st as the lot size, current/future building height and your zoning will determine if it will be allowed. A full engineered plan will be needed to apply. If approved then you will need a building permit as well as plumbing/electrical/hvac permits.

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Chris from FC Construction in Oakville
Date/Time4/26/2023 at 11:32:31 AM

Hi Frank,

In light of the recent developments in the industry and trade availability post-COVID, we estimate that the cost per square foot for your project would be around $300. The construction process would typically begin with designing the project with an architect, submitting the building permit to your local city, obtaining quotes from contractors and finally the build.

Should you have any additional questions or concerns, please do not hesitate to contact us at or via email at [email protected].

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