Some towns don't allow a 3-car garage in some areas/ districts. But I don't know of any that limit a house to 1 garage space.
If you need any further help, please let me know. Thanks,
If you wanted to obtain financing for this project you may want to consider refinancing into a 203k loan. It's an excellent loan product that builds $35,000 for improvements into the loan ($8,000 more for energy efficient upgrades). Rates for 203k came in at 4.75% today for qualified buyers. I specialize in this loan at Phoenix Mortgage Corporation, and I'd be happy to give you more information if you'd like! Feel free to call me at 978-944-6671 or send me an e-mail at firstname.lastname@example.org
Hope I can help!