Swimming pool rules in Falmouth, Massachusetts
Yes. Falmouth's zoning treats a pool more than 24 inches deep as a structure, so it must be at least 10 feet from side and rear lot lines and 25 feet from the street. It can't go in the front yard without a Zoning Board of Appeals special permit. You'll also need a building permit and a state-code pool barrier.
| Pools counted as structures | More than 24 inches deep [1] |
| Side/rear setback | 10 ft [2] |
| Street (front) setback | 25 ft (more on some main roads) [3] |
| Pool in front yard | ZBA special permit only, at least 50 ft from the street [4] |
| Max lot coverage by structures (residence districts) | 20% [5] |
Pools are structures under zoning
These rules come from the November 2022 compiled zoning bylaw and may have changed. Falmouth's zoning bylaw defines a "structure" to include a pool designed for swimming or recreational bathing that is more than 24 inches deep, as defined in the state building code [1]. Shallower inflatable or wading pools aren't covered. In-ground and deeper above-ground pools must meet the same dimensional rules as other structures.
Setbacks
Residential structures and their accessory structures over 100 sq ft must be at least 10 feet from side and rear lot lines in all districts [2]. The standard street setback is 25 feet. It's larger along Routes 28, 28A, 151 and a few other roads [3]. An accessory structure can go in a front yard only with a special permit from the Zoning Board of Appeals, and even then it must be at least 50 feet from the street [4].
Lot coverage
In the Residence AA, A, B and C districts, structures can cover no more than 20% of the lot, and 40% including paving and parking [5]. General Residence allows 50% with paving, and the Zoning Board of Appeals can allow up to 25% structure coverage by special permit in Residence B and C. A pool and its deck may count toward these limits. Ask the Building Department how they're measured.
Near wetlands and water
The wetland regulations list swimming pools as accessory structures. Adding or replacing one in the 100-foot buffer to a wetland, pond or the shore is treated as redevelopment [6]. It needs Conservation Commission approval and usually mitigation planting.
Fences, hot tubs and building permits
The zoning bylaw doesn't set its own pool fence or hot tub rules. Massachusetts' building code requires a building permit for most pools, plus a barrier at least 48 inches high with self-closing, self-latching gates. Spas with a lockable safety cover are exempt from the barrier. Electrical work needs a separate permit.
See how Falmouth compares with 8+ other Massachusetts towns on swimming pools →
Next steps
- Site the pool at least 10 ft from side and rear lot lines and behind the front of the house (25 ft or more from the street).
- Check that total structure coverage stays under 20% of the lot (40% with paving).
- If the yard is within 100 ft of a wetland, pond or the shore, file with the Conservation Commission before anything else.
- Apply to the Building Department (508-495-7470) for the pool building permit and electrical permit, showing the barrier/fence and gate details.
Common questions
- Do I need a permit for a swimming pool in Falmouth, Massachusetts?
- Yes. You need a building permit and a state-code pool barrier. A pool more than 24 inches deep is treated as a structure under zoning.
- How far must a pool be from the property line in Falmouth, Massachusetts?
- At least 10 feet from side and rear lot lines and 25 feet from the street.
- Can I put a pool in my front yard in Falmouth, Massachusetts?
- Not without a Zoning Board of Appeals special permit, and then at least 50 feet from the street.
- How much of my lot can structures cover in Falmouth, Massachusetts?
- In residence districts, structure coverage is capped at 20%.
Massachusetts building code rules for pools
Under the State Building Code (780 CMR, 10th edition), residential pools, spas and hot tubs must meet the 2021 International Swimming Pool and Spa Code (ISPSC) as adopted in Massachusetts.
Permits:
- A building permit is needed for any pool except prefabricated pools under 24 inches deep.
- Plans for in-ground pools must be prepared by a registered design professional (an engineer or architect).
- Wiring must meet the Massachusetts Electrical Code (527 CMR 12.00), and gas pool heaters must meet the state plumbing and gas code (248 CMR).
Barrier (fence) requirements (ISPSC §305):
- The barrier must be at least 48 inches high, measured on the side away from the pool.
- The gap under the barrier can be no more than 2 inches over grass or gravel, or 4 inches over concrete.
- Pedestrian gates must open outward away from the pool, be self-closing and self-latching, and be able to take a lock.
- If a house wall forms part of the barrier, doors and low windows opening to the pool need an audible alarm (or another listed option).
- In-ground pool construction sites need temporary fencing at least 4 feet high from excavation until the permanent barrier is up.
- Spas and hot tubs with a lockable safety cover meeting ASTM F1346, and pools with a powered safety cover meeting that standard, are exempt from the barrier rules.
Local zoning still controls pool setbacks, and wetlands rules may apply near water.
What the bylaw says
- § 240-3.3 Definitions, Structure, Zoning Bylaw, Town Code Chapter 240, Articles 1-14 (November 2022 recodification), p. 17
A structure includes tennis or similar sports courts; a structure designed to contain water for swimming or recreational bathing as defined in the Massachusetts State Building Code 780 CMR that is more than 24 inches deep; and gas or liquid storage tanks if principally above ground.
- § 240-11.4A(2)(a) Setback from Side and Rear Lot Lines, Zoning Bylaw, Town Code Chapter 240, Articles 1-14 (November 2022 recodification), p. 114
a. For residential structures, and appurtenant accessory structures larger than 100 square feet, except piers, floats, docks, and bulkheads, the minimum setback in all districts shall be 10 feet; for sheds of 100 square feet or less the minimum setback shall be 3 feet.
- § 240-11.4A(1) Setback from Street Frontage, Zoning Bylaw, Town Code Chapter 240, Articles 1-14 (November 2022 recodification), p. 114
(1) SETBACK FROM STREET FRONTAGE – Minimum setbacks from the street frontage shall be 25 feet, with the following exceptions:
- § 240-11.4A(1)(i) Setback from Street Frontage, Zoning Bylaw, Town Code Chapter 240, Articles 1-14 (November 2022 recodification), p. 114
i. The Zoning Board of Appeals, may issue a special permit for an accessory structure in a front yard, but the structure shall not be located closer to the street frontage than 50 feet.
- § 240-11.3A Table of Maximum Lot Coverage Percentage, Zoning Bylaw, Town Code Chapter 240, Articles 1-14 (November 2022 recodification), p. 113
Table of Maximum Lot Coverage Percentage (%) District Structures Structures/Paving/Parking Residence AA, A, B, C 20 40
- FWR 10.18(2)(f) Redevelopment, Falmouth Wetland Regulations FWR 10.00 (Conservation Commission; 2014 compilation), p. 56
2. Addition, rehabilitation, or replacement of accessory structures and appurtenances such as, but not limited to, swimming pools, sheds, freestanding garages, decks, patios, and landscape features, and improvement of existing roads, on a previously developed site.