Swimming pool rules in Natick, Massachusetts
Yes, with a Board of Health permit. Natick's pool rules (last amended in 2003) require the pool to be at least 10 feet from side and rear lot lines and from buildings, and 20 feet from any septic component. A permanent fence at least 5 feet high with self-closing, self-latching, locked gates must go up within 30 days of installation. Electrical and building inspections are also required before you fill the pool.
| Permit | Board of Health permit to construct or alter a pool [1] |
| Setbacks | 10 ft from side and rear lot lines, foundations and permanent structures; 20 ft from any septic component [2] |
| Fence | Permanent, at least 5 ft high, within 30 days of installation [3] |
| Gates | Self-closing, self-latching, with a locking device; locked when the pool isn't in use [4] |
| Above-ground pools | A 2-ft fence extension on top of the pool wall is enough if the top is at least 5 ft above ground, with a locking fold-up ladder [5] |
| Final inspections | Electrical Inspector, then Building Inspector, then Board of Health; no filling until all pass [6] |
| Lot coverage | Swimming pools count toward lot coverage [7] |
Board of Health permit
Natick's Board of Health Chapter 14A (adopted 1998, last amended February 25, 2003) requires Board approval and a permit before a pool is built or altered [1]. These rules are more than 20 years old. State building code pool barrier rules (see the state section) also apply and may be stricter in places. Installers need a Board of Health license, but a homeowner may install an above-ground pool. The regulation covers hot tubs and spas as "specialty purpose pools" for filter standards.
Where it can go
Show the pool on a certified plot plan. It must be at least 10 feet from side and rear lot lines, foundations and permanent structures, and 20 feet from any part of a septic system [2]. Under zoning, pools count toward the lot's lot coverage [7].
Fence
- A permanent fence at least 5 feet high (chain link, stockade or equivalent) must be built within 30 days after the pool goes in [3].
- Gates must be self-closing and self-latching with a lock, and kept locked when the pool isn't in use [4]. No opening in the fence may be over 3 inches, except the gate.
- Above-ground pools: a sturdy 2-foot fence extension on the pool wall, plus a locking fold-up ladder, satisfies the rule if the top is at least 5 feet above the ground [5].
Inspections
After the pool and fence are done, the Electrical Inspector and Building Inspector inspect first, then the Board of Health. The pool can't be filled until all three inspections pass [6]. You also need a filter-backwash sump at least 3 feet deep and 2 feet across, unless the Board approves your filter technology.
Near wetlands
The Conservation Commission's rules (undated in the text) name an in-ground pool as an example of a large project that should be filed as a Notice of Intent if it's within the 100-foot buffer zone or the 200-foot riverfront area [8].
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Next steps
- Get a certified plot plan showing the pool 10 ft from side and rear lot lines and structures, and 20 ft from any septic component.
- Apply to the Natick Board of Health for a pool permit, and use a Board-licensed installer (homeowners may install above-ground pools).
- Get building and electrical permits from the Building Department (508-647-6450). If you're within 100 ft of a wetland, file with the Conservation Commission.
- Install the 5-ft fence with self-closing, self-latching locked gates within 30 days, then schedule the electrical, building and Board of Health final inspections before filling.
Common questions
- Do I need a permit for a pool in Natick, Massachusetts?
- Yes. Natick's Board of Health rules (last amended in 2003) require a Board of Health permit before a pool is built or altered. Electrical, building and Board of Health final inspections must pass before you fill it.
- What are the pool fence requirements in Natick, Massachusetts?
- A permanent fence at least 5 feet high must go up within 30 days of installation, with self-closing, self-latching gates that lock. State building code barrier rules also apply.
- How far does a pool have to be from the property line in Natick, MA?
- At least 10 feet from side and rear lot lines, foundations and permanent structures, and 20 feet from any septic component, under the Board of Health rules.
- Does an above ground pool need a fence in Natick, Massachusetts?
- A sturdy 2-foot fence extension on top of the pool wall, with a locking fold-up ladder, satisfies the Board of Health rule if the top is at least 5 feet above the ground.
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
- BOH Ch. 14A, 2.1 Approval to Construct or Alter, Board of Health Chapter 14A - Rules and Regulations Governing Residential Swimming Pools (adopted 1998, amended Feb 25, 2003), p. 2
2.1 APPROVAL TO CONSTRUCT OR ALTER: Swimming pools shall not be constructed or altered until the Board of Health has given formal approval thereof by issuance of a permit.
- BOH Ch. 14A, 3.1 Location, Board of Health Chapter 14A - Rules and Regulations Governing Residential Swimming Pools (adopted 1998, amended Feb 25, 2003), p. 3
3.1 LOCATION: Swimming Pools shall be located on a certified plot plan drawn to scale showing the setbacks in relation to the following: the pool must be a minimum of 10 feet from side and rear lot lines, foundations and permanent structures; the pool must be a minimum of 20 feet from any component of a private septic system.
- BOH Ch. 14A, 3.3 Enclosures, Board of Health Chapter 14A - Rules and Regulations Governing Residential Swimming Pools (adopted 1998, amended Feb 25, 2003), p. 3
3.3 ENCLOSURES: A permanent fence shall be constructed no more than 30 days after the pool is installed. The fence shall be chain link, stockade or equivalent and have a minimum height of 5 feet.
- BOH Ch. 14A, 3.3 Enclosures, Board of Health Chapter 14A - Rules and Regulations Governing Residential Swimming Pools (adopted 1998, amended Feb 25, 2003), p. 3
Gates must be self- closing, self-latching, and provided with a locking device. The gates must be locked at all times when the pool is not in use.
- BOH Ch. 14A, 3.4 Above Ground Pool Exception, Board of Health Chapter 14A - Rules and Regulations Governing Residential Swimming Pools (adopted 1998, amended Feb 25, 2003), p. 3
3.4 ABOVE GROUND POOL EXCEPTION: If the pool is an above ground pool, a sturdy, permanent 2 foot-extended fence installed at the top of pool with a locking fold-up ladder will satisfy the Board of Health enclosure requirements provided the top of the extension is a minimum of 5 feet above the surface of the ground.
- BOH Ch. 14A, 6.1-6.2 Final Inspection, Board of Health Chapter 14A - Rules and Regulations Governing Residential Swimming Pools (adopted 1998, amended Feb 25, 2003), p. 5
6.2 FILLING THE POOL: The pool may not be filled with water until such time that all final inspections have been satisfactorily completed.
- Sec. 200 Definitions, Lot Coverage, Zoning Bylaws (June 2026 edition, includes amendments through 2025 Fall Annual Town Meeting), p. 25
Lot Coverage: The area of a Lot covered by Building(s) or Structure(s), including, but not limited to all accessory structures, roof overhangs, swimming pools that is expressed as a percentage of the total Lot Area.
- Rules and Regulations, When to Use an NOI, Conservation Commission - Town of Natick Wetland Protection Bylaw Rules and Regulations, p. 41
The Notice of Intent (as opposed to the Request for Determination of Applicability) should be used for any large project that is within the 100-foot buffer zone or within the 200-foot riverfront area. Some examples of a large project are: A new house or any structure requiring excavation for a foundation; an in-ground pool; a wall requiring a footing; any substantial increase in impervious (paved) area; any filling, excavation, or grading; substantial landscaping.