Washington DC Basement Digout/Underpinning

[Ian Carter]

Hey there,

We just purchased a townhouse in NW DC and are looking to convert the basement into a one bedroom rental. With ceilings of about 6'7", we are looking to digout and add at least 4-6 inches, if not 1-2 feet. I've read numerous posts on Biggerpockets with estimates and lessons learned in other cities, but nothing current in DC.

I'd love to hear any recent experiences digging out and underpinning in DC, including costs, contractors (referrals very welcome!) and tips. The basement currently has a separate back entrance but we'd look to add a front entrance as well as part of this project. As it stands now, as a studio, we can likely get about 1100 a month. A 1 bedroom will pull in about 2k a month. I'm hoping to move forward relatively soon but need to make sure it makes sense for the potential income it will generate.

Thanks!