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Question DetailsAsked on 1/11/2018

Ballpark cost on converting a covered porch with a basement under it to extra living space?

We are looking at buying a home that has a porch with a concrete slab and the basement is under it. The porch has a roof. We would like to convert the porch to extra living space. What would be the cost of doing this?

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Assuming the existing basement has proper foundation walls around it, so the "foundation" work would be limited to putting in anchor bolts to fasten the walls down, assuming normal size (say not over about 300-500SF) might run from BALLPARK $10,000 range at bottom end in warm climate, more commonly around $20-30,000 for a Florida type room with normal windows on up to $30-60,000 for one with a lot of glass. This assumes the roof covers the entire desired room area with adequate overhang - i.e.. that the roof needs at most some flashing and maybe guttering to make it suitble for the "room".

That is also probably the range for a normal full-finished room just like a normal living room, including additional heating/air conditioning capacity if needed, in a less than ideal climate area. And of course, on up from there for fancy finishes and such.

Here are links to a few previous similar questions which might also help - but first thing you need is an Architect to rough out a conceptual drawings and a conceptual cost estimate, and to help identify if you have any zoning issues which might affect this project - like setback requirements, limitations on house footprint or number of bedrooms, regulations requiring ater/septic upgrade if you add more space (normally only if new room is classified as a bedroom).

Answered 2 years ago by LCD

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