The problem with a deeper house is:
1 - i expect side windows (certainly at 1st floor) to be a problem for planning permission, which limits the practical depth.
2 - 10m back we have a 2m high slope, i think it would be better/cheaper not to go beyond that - and again, planning might be harder as will start to overlook neighbours gardens (due to height differential).
Its essentially a city centre plot, so parking in front is the norm for the street, much as we would prefer otherwise and many of the existing houses are 1m apart in places.
But i would like as decent access as i can, which means going as close to the boundary on one side as possible in order to make more space at the other.