Side yard: For single-family detached dwellings, eight feet minimum for principal buildings and five feet minimum for accessory buildings, except two feet minimum for a storage shed of less than 100 square feet floor area. For single-family semidetached dwellings, eight feet minimum on one side, where only one side is required, for principal buildings, and five feet minimum for accessory buildings, except two feet minimum for a storage shed of less than 100 square feet floor area.