According to Massachusetts State Law (Chap. 148 Sec 26F) all buildings or structures occupied in whole or in part for residential purposes upon the sale or transfer, shall be equipped by the seller with approved smoke detectors/ MGL Chap.148 sec. 26F. An operating smoke detector is required on every habitable level, including the basement. Finished attic spaces also need smoke detector coverage. In homes with floor space exceeding 1,200 square feet per floor, a second detector will be required. To schedule a smoke detector inspection please call the business number at (508) 528-2323. Certificates are valid for 60 days after the date of issue.