If you are new to the 203k process, I would recommend using a 203k consultant to help you through the process. They will help with estimates and the required paperwork for a loan. Eddie Hurst is excellent and can be reached at 410-437-2255.
As for a 203k contractor, I have had some clients use Fontaine Durand, LLC. A contact there is Andre Reveley at 202-437-6413.
Good luck! It can be a tough process to get through.... more