Detached garages (split level design to accommodate a garage below BFE): How much space needed between the home and garage to be considered detached, access/entrance between the two. [see diagram below, where street Pacific Coast Highway (PCH) is below BFE]

Detached garages (split level design to accommodate a garage below BFE): How much space needed between the home and garage to be considered detached, access/entrance between the two. [see diagram below, where street Pacific Coast Highway (PCH) is below BFE]