Not in dc, but as a contractor, I can tell you that one of the best ways of finding a good company is asking someone-neighbor whoever- who has a deck a few years old.
Also, be sure to know what your quote is. Joist spacing, lumber grade spindle spacing are all things to know before you give someone the job because they are 200 dollars cheaper than the other contractor who figured 500dollars in extra lumber.
Well I came to know that this place is the best for having great solutions for problems. So here I am with a problem of Deck in my home, I need a company who can build up a deck in my home. I need about 16x24 deck installed in my garden space. Can anyone recommend me the best deck company?
Oh for your assistance, I live in DC.
Cheers