I feared you would live in one of those highly populated cities in which extremely small and weirdly shaped lots are pretty common. Like, how do you build a house in a 4x10 m lot?
Anyway, thats the good thing with houses, you can always go up or sides... I mean it isn't cheap, but you are the owner of your lot.
On a sidenote, i always wanted to have a big garage that i could also use as a workshop. They aren't common in my country. If it helps in anyway, i like your plan and attitude.
Non parliamo con nessuno al di fuori della famiglia della nostra cosa