Reply to How much for this bump out and is it even possible?

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[quote=Anonymous]It would probably be as expensive as putting on a room-sized addition with a bath.

First you need to make a 5-6' wide hole in the brick wall in the side of the house, which means making a hole that is quite a bit bigger because you have to put a lintel over the top of the hole to support the wall above. And you have to figure out a way to support all that brick while you're putting the lintel in. Depending on how the wall is constructed you may have to reinforce below the lintel as all the weight is now concentrated in a smaller area. If the joists run parallel -- which I assume means you cross a joist to go through the wall -- then the wall isn't holding the joists, which makes it somewhat easier.

To bump out without supporting from below you have to cantilever the joists for the bump out. On a cantilevered joist the amount extending can be no more than one quarter of the amount inside the house. So to make a space 3' deep you'd have to go back 12' into the house. In that 12', you have to cut all of the joists, and double the joist at the back. This probably means removing the floor in that room and the ceiling in the room below.

With a shower in the bump, you have to figure out a way to get the plumbing out there. It's going to be hard to route drains through the floor with joists running every which way.

I'd estimate $75-100K, plus whatever the bathroom costs, depending on your existing level of finish.

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