In NoVa, I've been satisfied with Best Tailoring. Fairly well recommended on Yelp, great service and friendly people. I've taken one suit there and was measured for an Indochino suit (trial run)...happy with the results. As I understand he also does bespoke. Saw the owner of a local sports team there, don't know which one (not the Skins or Nationals), fwiw.
9126 Lee Hwy
Fairfax, VA 22031(703) 641-9333