I live in a house in Scarborough where I would like to enclose one of my existing carports with a wall of windows and make it part of my heated, indoor space. The existing carport is under the main house to the right of the front door, which is supported by concrete columns (see picture attached).
My understanding is that because a roof already exists, the walls would not have to bear any load. But I would expect that I still need some type of foundation?
Any ideas what the different types of foundations would cost? And would the existing concrete columns limit my options?
Your correct the walls would not be load bearing and the columns would not limit what you do here. I would look at helical piles as it would eliminate excavation. My suggestion is to get the opinion of a local structural engineer. you should be able to pour a slab on grade for the floor and ask about in floor heating as well.
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