Three and four car garages are replacing two car garages in new homes. Dimensions expand to accommodate larger vehicles like the Hummer H2 as well boats, ATVs, camping trailers, and other "toys. "A two-car garage, the norm for new houses since the 1960s, measured 20 by 20 feet until a few years ago. Now, says builder Charlie Untermeyer of Ridgemont Country Homes, the standard has swelled 4 feet in each direction....Openings also have grown wider, with the standard single door increasing a foot to 9 feet and doubles growing from 16 to 18 feet wide...."
Thanks to Bill Barker