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Question DetailsAsked on 10/5/2014

I would like to dig out 8 -10 feet of crawl to enlarge my already partial basement, what would to cost be?

I want to enlarge my basement....and finish it. 8-10 feet of crawl space would increase my basement so I could add a walkin closet, small walk through bathroom and laundry room. I want to know how much the dig out would cost, and finishing the floors and walls.

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1 Answer


Depends terribly on your foundation type (especially if you have intermediate piers in the crawlspace) and depth and also on water level under your basement, because a major cost is lifting the house up and dewatering (if needed) and then extending the foundation down to below the new basement slab level, if needed (and almost always is in your case). Here are a couple of similar questions with responses that can get you started -

What you need to do is get an architect or civil/structural engineer into the picture to evaluate how much trouble it would be with your house, and give a rough cost estimate- then help you with plans and findinga contractor if you are going to go ahead with it.

As far as the remodeling (once the basement is built) you can find a lot of prior questions with costs on that issue in the Home > Project Cost and Home > Basement Remodeling (or is it Remodeling - Basement) link in Browse Projects, at lower left.

I would strongly recommend pricing a small addition at the same time, because I would give odds on that will be cheaper - an addition with full basement connection to existing basement.

Answered 5 years ago by LCD

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