We have a detached garage for our Cape Cod home. Went with a carriage house design with bi-fold doors. Best of luck to you.

Your garages look beautiful! I do like that style the best at this point. Thank so much for your input and I‘m sure you‘ll enjoy your lovely home with your choice. Shirli

Damian, we live in western Washington state so it does not get that cold here. We used fiberglass insulation. The walls are 2x4 so we just used R13 insulation. The floor is concrete with we have hydronic heating tubes with 2” of insulation. On the doors we just used weather stripping. Hopes this helps, it’s been almost 17 years so I had to tax my old brain.

Oh, I don’t know if this will be relevant, but I can advise you on the excellent garage door opener fire service, they do everything qualitatively, it is very important that they work around the clock. I say that because I myself used the https://stigaragedoor.com/ service. It is very convenient and good, try it.