You could probably get a landscaping company to do the grading work. You only need a drainage/waterproofing expert if you have a major problem or if grading doesn't solve the problem.

We are looking to hire some one to re-grade our small DC townhome front yard to direct water away from the house. I've noticed that a lot of the commonly recommended companies (Newborg, etc) are in VA and don't seem to do jobs in DC. Has anyone in DC had this done, and if so, can you recommend someone? Thanks!