Re: Digging out a basement
Lots of money and patience.
Originally Posted by Chaps
I agree with Dobbs and to add ----
you will need to have an engineer design and approve the plan and possibly an engineer to evaluate the soil conditions. There are lots of concerns like how you preserve/shore up the footings at the base of the existing wall ---- so even at best you are likely to have a "shelf" around the perimeter of the basement at the 4 foot level . Then you need to submit the plans to the building department for approval.
If you are also considering having finshed living space in this new basement there will likely be a need to go deeper to provide current minimum headroom requirement of 7 feet from finish floor to finish ceiling.
More information than that, we can't really give you, too much depends on the details of the installation and your locale.
Also, any plumbing will likely become an issue. It may not be possible to relocate the plumbing lower without completely re-doing the service connection.
If that's the case you may end up having the sewer and main water line exposed at the 4 foot level within the basement.
It's far from a " dig deeper, pour a new foundation wall and slab" proposition.
Depending on the size of the home you are looking at $20+K
Perhaps you might consider raising the home instead since the walls can be built using wood knee walls or block. This has it's own complications like if the there is a height restriction , you may not be able to live in the house while the work is being done , etc..
"" an ounce of perception -- a pound of obscure "