Plymouth County, MA Accessory Structures: Shed & Carport Rules (2026)
Shed permit rules in Plymouth County, MA, also referred to as storage shed, backyard shed, or accessory building regulations, set size limits, setbacks, and when a building permit is required.
Key Facts
- Permit Exemption
- 200 sq ft or less
- Governing Code
- 780 CMR R105.2
- Zoning Setbacks
- Still apply, set by town
- Electricity
- Wiring needs a permit
Summary
A small shed skips the building permit everywhere in Plymouth County. The state code exempts a one-story detached storage shed of 200 square feet or less, so a backyard shed in Plymouth or Brockton needs no building permit.
One-story detached accessory structures used as tool and storage sheds, playhouses, and similar uses provided that the floor area does not exceed 200 ft2
Full Breakdown
780 CMR R105.2 exempts one-story detached accessory structures used as tool and storage sheds, playhouses, and similar uses when the floor area does not exceed 200 square feet. That building-permit exemption is statewide, so it reads the same in every Plymouth County town. It does not waive local zoning: town bylaws still set setbacks from lot lines and rear-yard placement, and wetlands or conservation restrictions can still apply. A shed over 200 square feet, or one wired for electricity, needs a permit. The county plays no part.
Violations & Fines
A shed over 200 square feet built without a permit is illegal work under 780 CMR and draws a stop-work order. A compliant-size shed placed inside a zoning setback violates the town bylaw.
Frequently Asked Questions
Do I need a permit for a shed?
Does the exemption cover setbacks?
Sources & Official References
Other rules in Plymouth County
How Plymouth County compares: Shed Permit Requirements by City·Compare Plymouth County to another location·View the Massachusetts accessory structures overview
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