Swimming pool permit rules in Montgomery County, MD — also covering above-ground pools, in-ground pools, and spa installations — set fencing, barrier, alarm, and inspection requirements.
Montgomery County requires a DPS building permit for all in-ground pools and above-ground pools with decks. Electrical permits required for pool equipment under NEC Article 680.
The Montgomery County Department of Permitting Services (DPS) requires a residential building permit for the construction of any in-ground swimming pool. Above-ground pools that are freestanding and do not have attached decks or permanent plumbing may be exempt from a building permit but still require compliance with barrier/fencing requirements. A separate electrical permit is required for pool pumps, heaters, lighting, and bonding connections. All electrical work must meet the National Electrical Code (NEC) Article 680 as adopted by Maryland. Pool construction must comply with Montgomery County Building Code Chapter 17 and relevant sections of the International Residential Code (IRC). A plumbing permit is required if the pool connects to the county water or sewer system (WSSC jurisdiction). Inspections are required at multiple stages: excavation, steel/rebar placement, plumbing rough-in, electrical rough-in, barrier/fence, and final. DPS plan review typically takes 10-15 business days. Pools must maintain setbacks from property lines as specified in the zoning ordinance, generally 5 feet from side and rear lot lines in residential zones.
Building a pool without permits subjects the owner to stop-work orders, mandatory retroactive permitting, and fines. DPS may require removal of unpermitted structures. Fines up to $500 per day for continued violation.
Montgomery County, MD
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