Rockville, MD Swimming Pools & Spas: Above-Ground Pools (2026)

Above-ground swimming pools in Rockville are subject to the same general permitting and safety requirements as in-ground pools, with some practical distinctions. Any above-ground pool exceeding 18 inches in depth requires a building permit from the Montgomery County Department of Permitting Services. Above-ground pools with walls that are at least 4 feet high do not require a separate fence enclosure, provided the pool is equipped with a removable or detachable ladder that is stored away from the pool when not in use. This is because the pool wall itself serves as the barrier to unsupervised access. If an above-ground pool is less than 4 feet tall, an additional barrier must be installed to bring the total effective height to the required level for pool fencing. The pool must still comply with zoning setback requirements under Rockville's Chapter 25 and must not be placed in a location that interferes with utility easements or stormwater drainage. Electrical connections for above-ground pool pumps and lighting must have GFCI protection and comply with the National Electrical Code. Small inflatable or temporary pools under 18 inches deep are generally exempt from permitting but should still be emptied when not in use to prevent mosquito breeding.