Anonymous wrote:
Anonymous wrote:On fresh ground? I'd say $150k if done well. Just the foundation and excavation would be $30k at least.
Also you need to check zoning if you want to do this. In MoCo, they are pretty strict about accessory structures and this would be seen as an accessory apartment. Basically only one allowed per block (at least in R90 zoning) and lots of restrictions on it.
My understanding is that in Arlington, where this house is located, is that if you add a half floor of living space above a garage, it's still a garage, no extra permit (like this one), but if it's a full second story, it changes the nature of the space and you need a separate permit.