Fire sprinklers are not typically required in single family dwellings or duplexes. However, there are projects where either fire department access or firefighting water (hydrants) are not adequate and sprinklers may be the most effective alternative. New multi-family apartments constructed under the Oregon Structural Specialty Code (OSSC) require fire sprinklers. Sprinklers may be required in new commercial buildings, additions to commercial buildings or a change of occupancy. Requirements for sprinklers are noted in the OSSC and the Fire Code (OFC). Each project requires individual review.