Just wondering if anyone knows what's the largest sized garage I could construct if I have a backyard with about 15m x 13m available plus I would like to go as high as I can e.g. 5.0m. This is assuming I pay for any boundary relaxations. I own the property next door so no issues with building close to that boundary. Ideally I'd like to fit a 12m x 10m x 5.0m garage in but I suspect this is not allowed by the clowns at the Brisbane City Council. Also does anyone know if underground basements are allowed by the BCC?