What are some companies who could build a 4-Plex in Northern Virginia? Suppose I have a half acre or more. The company doesn't need to be local, but it needs to meet local code of course.
@John Vandivier have you verified that your property is allowed to have a four plex? There are a lot of questions that need to be asked with the zoning department. There might be a design build firm in the area but usually they do smaller residential project. If not you have to go the traditional route of hiring an Architect and then a GC.
The GC that helped me build my house in Alexandria is pretty good. I have referenced him to two of my other projects I designed and the clients are happy so far.
If the zoning code is online I can do a quick review to see what you can build. Just PM me the address.