My parents built a 24x32 in the town of tonawanda 2 years ago. We wanted to go 24x40 but it was over the sq ft allowed. You can go 15ft high, and i beleive it has to be 5 ft off the property line.
We originally talked to the neighbors and they had no problems with that size garage. We applied and paid the fee for a variance for the 24x40. They send out a notice to all of your neighbors and if one of them does not approve, the variance will be declined. Needless to say, when the time came, the neighbors didnt aprove. Piss on them.