Garage under - crazy idea?
This a hypothetical question, as I am not going to buy the house that prompted my inquiry. But now my curiosity has the better of me, and I hope that an architect or builder or engineer will comment.
A rough sketch of the property looks like this:
The two-story house (with full basement under) is about 45' x 30'. The basement has support poles in the center about 8-ft apart. The one-story part (with garage under) is about 12' x 18'.
The logical places to add a second garage space would require variances, as they would place the garage too close to property line setbacks. So I entertained the idea of converting about half of the unfinished basement to parking. A big opening into the house foundation would be required... yikes! And I know additional fire protection is required between a garage and living space. So is this feasible, or just a crazy idea?
Assuming I'm not already a crackpot, please consider another variation. For this particular house, a second tandem parking spot is easy to imagine in the basement in front of the existing one-car garage. But it might be preferable to use the existing narrow garage as an entry, with angled parking for a second car. But that would seem to require eliminating at least one of the support poles in the basement. Could a steel beam replace one or more support columns? Generally crazy idea, or just crazy expensive idea?