Lowell, MA Swimming Pools & Spas: Fencing Requirements (2026)

The City of Lowell Division of Development Services administers swimming pool barrier rules through the Massachusetts State Building Code (780 CMR), which Lowell enforces locally. The city's Swimming Pool Permits page states that 'A fence must be installed that is at least 4 feet high (for a residential pool), with a self-closing and self-latching gate,' and that 'If the wall of the house serves as part of the enclosure, any doors leading from the house to the pool must be alarmed.' The underlying state standard, 780 CMR 3109.4 (Residential swimming pools), requires the top of the barrier to be at least 48 inches above grade measured on the side facing away from the pool, with a maximum 2-inch clearance between grade and the bottom of the barrier, and openings that will not allow passage of a 4-inch-diameter sphere. Pedestrian access gates must open outward away from the pool and be self-closing and self-latching; where the latch release is less than 54 inches from the bottom of the gate, the release must be on the pool side at least 3 inches below the top of the gate. These barrier requirements are verified at final inspection before the pool can be used.