If you have a back door to the utility room, it doesn't have to be a large entrance. One would, no....we would be more accurate, always prefer to come in and out from the back, because coat off, shoes off, slippers on, done.
In my opinion, this property does not call for a townhouse, but for a nice, single-story Danish bungalow without any slanted walls, with a well-walkable attic, roof pitch therefore not less than 30 degrees, not more than 35 degrees, otherwise it becomes too massive, as storage space for stuff. If you then also plan so that this attic is easily accessible by stairs instead of a pull-down ladder, perfect.
The bungalow should be L-shaped. The garage or carport should be attached to the short leg of the L. That is quite doable with the property. Why a townhouse? Why build up if I can build wide?
Why stairs if it can be done without?
Why dormers and gutters that I have to maintain using scaffolding if I can have them at step-ladder height?
Why stretch up when you can spread out? Karsten