In multiple dwellings, for which building permits for new construction are issued on or after September 1, 1996, that are for rent, hire, lease or sale and that are equipped with an elevator, all dwelling units must be constructed as Group 1 Dwelling Units, except those covered in 521 CMR 9.4, Group 2 Dwelling Units.
In multiple dwellings that are for rent, hire, lease, or sale but are not equipped with an elevator, only units on the ground floor must be constructed as Group 1 Dwelling Units.
Group 1 units must comply with 521 CMR 9.5, and, 521 CMR 42.00: GROUP 1 BATHROOMS; 521 CMR 43.00: GROUP 1 KITCHENS; and 521 CMR 46.00: GROUP 1 BEDROOMS.
521 CMR, § 9.3