Careth not do I of what other people think, I have a six-car garage and I love it.


See, the thing with this game is that you get to be seen as an individual; there are about 150 houses to buy around the island. You can buy more than one, but that is exactly the problem.
Buying more than one house makes you seem obnoxious. Having one, simple house is your best bet, so you can keep your cars organized and remember that single location. If you buy more than one, your cars get all out of place and you get your classics in your moderns etc, etc. Plus, remember the fact that
there is a money system in the game, so you'll have to save up from races/transportation missions/time trials.
So basically, what I usually do is buy a small, 6 car house that is stylish. The house looks great from the outside view, believe me. Have a look:

Sure, I'm only allowed to have six cars because of the size. Who cares? having 30 is so stupid.
Plus, Tom and I can share this house as well.