Your question is rather broad. If you can be a little more specific, I'm sure we can give you much better information.
- Are you wanting to only look in DC, or do you have interest in MD and VA?
- What size property? 1-2 units, 1-4 units, 4-10 units or larger? There are tax and other issues in dealing with more than 4 units.
- What price range?
- Are you looking to hold the properties or flip them?
- If you want to flip, is zoning an issue?
- What sort of funding do you have: cash, private investor, hard money or conventional commercial? Sometimes type of funding can determine what is, and is not, feasible.
- Are you looking for turnkey, fixer upper, or a gut job?
These are just a few of the questions that will come up. The answers can help us greatly improve the quality of the answer to your question.