CoreyHeights

I would expect it to cost more. I heard from a realtor of a couple that were built recently that cost closer to $80k. You have to account for the first level (the actual garage with bays for cars) and the systems/connections that are required with a totally separate structure (electrical, plumbing, gas, sewer, HVAC, etc.) Having said all of that, we love having one and it is a great thing about the Heights. I would think that with it being new, c. 500 sq. feet, and if you build it with central AC, you could get $750/mo. I'm not as clear on what it would do for the resale value of your place. I know our current house was much more attractive to us for having a detached garage with an apt., and that we were ready to pay more because of it.