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I would like to open up the back of my house and extend it 10 feet.

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Posted by: from Toronto
1/27/2014 at 1:22:26 PM

I have a small house and its all open concept. The previous owner extended one side to fit the stove but its raised floor and its freezing in that area. I hate it!!!

I would like to take that little extension out, extend all by 10 feet, continuing with the brick exterior. Add glass doors out to a small wood deck.

I believe I would need a foundation first? Then what? Is this a really big job?

Can you give me an idea how much it would cost?

Thanks,

Connie

REPLIES (4)
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Date/Time1/27/2014 at 2:42:39 PM

Connie,

Thank you for your inquiry.

So, you would like to demolish the existing addition...what size it that addition?

I understand that you want to extend it 10'-0" out , how wide would the addition be?

Also, how much room do you have between your home and your neighbours, on both sides?

Do you know what the distance is to each property line, side yard and rear? Do you have a survey?

What is the distance from the first floor to grade at the back, which is where I presume the addition would be located?

What about access to the backyard? Is there room between the houses to access for construction activities.

For a foundation, you have a choice of either a crawl space or a full basement. The least expensive is a crawl space and that would be heated. This ensures your floor is warm.

Do you have forced air heating in your home?

Dependant upon the square footage, a small addition, with a crawl space and brick veneer, would run $300 per square foot and up. As you can see by my questions above, there are variables which will affect the price.

If you can provide answers to the questions above, I would be able to give you a better idea of what it would cost.

Thanks again for your inquiry.

Peter Locke

Inverness Design Build Group Ltd.

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My Basement Ideas in Kitchener
Date/Time1/27/2014 at 8:43:55 PM

Hello Connie,

It is very hard to give a price without seeing the area. Guessing you'll be adding roughly 200sf of additional living space you should budget for $50000 to $60000. Also accessability to the area will also play a part in pricing along with site conditions and the condition of the existing structure.

Abel Demetriou

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Date/Time1/28/2014 at 2:58:13 PM

Hi Connie,

I have moved my company out to the Niagara region but I have added second story additions and side and back additions to many homes in the whole GTA, including downtown Toronto.

So your neighbourhood will effect the price. Sometimes substantially. I added a second story addition to a home on Avenue Rd and had to pay for three police officers on a few occasions. Including during crane operations.

Access and traffic conditions play a role as well. How close is you house to the property line? That will control the extent of the addition on the side.

And as others have mentioned, actual access for the equipment to excavate can effect costs.

I also assume you are talking about kitchen space. This will require new cabinetry, countertops etc. As well as full plumbing and gas.

I assume you have a basement under the existing house, not the old addition. I would strongly suggest a full basement under the new area as well. It adds to the cost, but gives more potential square footage to finish off the basement in the future for potential buyers when you sell.

A cost without seeing the property and discussing what you are looking for in finish is very difficult to give you, but I'll toss out some numbers.

Based on 200 sq". You are on the low end about 40,000.00 and could be as high as 65,000.00.

I have included a window on the new exterior wall as well as the sliding doors.

If you let me know what the size of the deck is and the material you wish it to be constructed of I'll toss out that number as well.

James fram

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Connie in Perkinsfield
Date/Time1/29/2014 at 9:26:43 AM

Thank you so much for the replies. I will have to find the survey and get back.

C

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