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Question DetailsAsked on 3/25/2017

Approximately how much would it cost to raise 3 walls in a room/ change the roof from a lean-to look to normal?

Obviously there are a lot of factors that go into this, but I'm trying to get a rough estimate. I am looking at a house that has a room with a slanted lean-to roof that we would definitely want to renovate if we purchase it, so we would need to lift the wall and the whole roof to make that room more functional. I'm curious how much it would cost to make the 3 slanted walls a few feet taller so it looks like a normal room with a normal roof

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1 Answer


I presume you mean a "shed roof" - a constant slope from top to bottom, covering the entire house, highest over one side to lowest over other.

If this is going to factor into your purchase decision, I would say get an architect to rough out a preliminary cost estimate for a few hundred to five hundred $ typically. Normally this would be more substantial a change than one would want to do on a new purchase unless you are looking at it as part of an overall remodel - most people would move onto another house which more closelyi matches their desired configuration and >

I am a little unclear on the raising 3 walls thing - especially how you got 3 slanted walls rather than 2 or 4. From the title of the question I thought you were going to ask about converting a shed roof/slanted roof to a conventional gabled roof but in the detailed question it sounds like maybe you mean the low side of the roof is too low, making for a low room on that side, but you are OK with keeping the shed roof, just raising it - or maybe you mean converting only one side to convert to a typical gabled roof over that room. Sounds like is possibly an adddition where they just extended the existing roof over an added room, making for a low ceiling height on the low side.

Like you say - lot of variables affecting the cost, especially the type of roof framing and if not asphalt shingle roof, the roofing material. Sometimes you can literally pick a roof off a house with a crane or jack it up, raise the walls, and set the roof back down and fasten it back on - in other cases the framing is such (or in degraded condition) so that you have to tear the roof totally off and replace it.

VERY, VERY rough ballpark assuming this is a room 20 something feet in each dimension - I can't see getting it for less than about $20-35/SF of roof area being affected in the best case, more likely around $35-50/SF for JUST raising the roof, and probably more like $50-80/SF to reconfigure wall height as desired and then replace that roof section with a typical gabled roof, at least over that room. Might get a bit cheaper in low-cost area, could be substantially (say $20-50/SF) more in high cost areas.

These numbers assume of course there is no second story over the room -pretty sure you are talking a shed-roof sunroom or rec room or such.

Answered 3 years ago by LCD

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