Do I need a permit for a shed in Needham, Massachusetts?
Sheds are allowed by right as accessory uses in Needham's residential districts. A shed must be at least 5 ft from side and rear lot lines and 10 ft from other buildings, and a shed taller than 15 ft must meet the full district side and rear setbacks. Needham's Zoning By-Law says no building may be built without a permit from the Building Commissioner, so check with the Building Department even for a small shed.
| Allowed use | Tool sheds, garages, greenhouses and cabanas: Y (by right) as accessory uses [1] |
| Side/rear setback | 5 feet from side and rear lot lines [2] |
| Distance from other buildings | 10 feet [2] |
| Over 15 ft tall | Must meet the district's full side/rear setbacks [2] |
| Permit | Building Commissioner permit for any building or structure (zoning rule) [3] |
| Lot coverage | Counts toward lot coverage (Single Residence B: 25%-30% depending on lot size) [5] |
| Max building height | 35 feet (district maximum) [8] |
Allowed by right
These rules come from the Zoning By-Law as amended to May 2025 (printed November 2025); later changes may not be reflected.
The use table lists "other customary and proper accessory uses, such as, but not limited to, garages, tool sheds, greenhouses and cabanas" as allowed (Y) in every district column of the table, including all residential districts [1]. A shed is a building under the bylaw because it has a roof sheltering property [7].
Setbacks and spacing
Section 4.2.9 says no accessory building or structure (other than fences) may be closer than 10 ft to any other building or structure or 5 ft to the side or rear lot lines. If the accessory building is more than 15 ft tall, it must meet the district's regular side and rear setbacks [2]. The section doesn't relax front setbacks, so a shed in front of the house has to meet the front setback for the district, listed in the dimensional tables in Section 4.2. The zoning definition of "structure" excludes items under 100 sq ft and under 8 ft tall [6], but a roofed shed still counts as a building.
Size, height and coverage
There's no shed-specific size cap. Sheds count toward maximum lot coverage, which is the portion of a lot covered by any building or structure [4]; in Single Residence B the cap is 30% for lots under 5,500 sq ft, stepping down to 25% for lots of 7,500 sq ft or more [5]. District height limits also apply (35 ft when measured from grade) [8].
Permits
Under Section 7.2.1, no building or structure may be constructed or relocated without a permit from the Building Commissioner, and applications need a plot plan showing the lot and all buildings [3]. The state building code separately exempts one-story storage sheds of 200 sq ft or less from a building permit, so ask the Building Department which approval applies to a small shed. In the Flood Plain District, sheds need a special permit from the Board of Appeals, and sheds near wetlands may need Conservation Commission review.
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Next steps
- Call the Building Department (781-455-7550, 500 Dedham Avenue) to ask whether your shed needs a building permit or zoning sign-off.
- Prepare a plot plan showing the lot, existing buildings, and the shed's distance from lot lines (5 ft minimum) and from other buildings (10 ft minimum).
- Check lot coverage: add the shed's footprint to your house and other buildings and compare with your district's limit.
- If you're in the Flood Plain District or within 100 ft of a wetland, contact the Board of Appeals or Conservation Commission first.
Common questions
- Do I need a permit for a shed in Needham, Massachusetts?
- It depends. The Zoning By-Law says no building may be built without a permit from the Building Commissioner, though the state building code exempts one-story sheds of 200 sq ft or less. Ask the Building Department which applies to a small shed.
- How far from the property line must a shed be in Needham, Massachusetts?
- At least 5 ft from side and rear lot lines and 10 ft from other buildings. A shed taller than 15 ft must meet the district's full side and rear setbacks.
- How big can a shed be in Needham, Massachusetts?
- There's no shed-specific size cap. Sheds count toward maximum lot coverage, and district height limits apply, including 35 ft as the district maximum.
- Are sheds allowed in residential zones in Needham, Massachusetts?
- Yes. Tool sheds are allowed by right as accessory uses in residential districts.
Massachusetts building code rules for sheds
The Massachusetts State Building Code (780 CMR, 10th edition) sets when a shed needs a building permit. Your town's zoning sets where it can go.
- No building permit needed for a one-story detached accessory structure used as a tool or storage shed, playhouse or similar, if the floor area is 200 sq ft or less (Residential Code R105.2).
- Bigger sheds, or any with more than one story, need a building permit from your local building department.
- Also exempt from a building permit: detached decks of 200 sq ft or less that are no more than 30 inches above grade, and greenhouses covered only in plastic film.
- The exemption covers only the building permit. Electrical, plumbing or gas work in the shed still needs its own permits, and the shed still has to meet local zoning (setbacks, lot coverage, height). Many towns set accessory-structure setbacks even for small sheds.
- Wetlands: putting a shed in a wetland resource area or within 100 feet of a wetland (or 200 feet of a river) may require Conservation Commission approval first, whatever its size.
The 10th edition took effect October 11, 2024 and has been the only code in force since July 1, 2025.
What the bylaw says
- §3.2.1 Schedule of Use Regulations, Accessory Uses, Zoning By-Law (amended to May 2025; printed November 2025), p. 47
Other customary and proper accessory uses, such as, but not limited to, garages, tool sheds, greenhouses and cabanas
- §4.2.9 Minimum Side and Rear Line Setbacks: Accessory Structures, Zoning By-Law (amended to May 2025; printed November 2025), p. 180
No accessory building or structure, excepting fences, shall be constructed, altered or relocated so that any part thereof shall be less than ten (10) feet from any other building or structure or less than five (5) feet from the side or rear lines of the lot on which such building or structure is located. Notwithstanding the foregoing five (5) foot setback from the rear or side lines of the lot, any accessory building or structure which exceeds fifteen (15) feet in height must comply with the underlying district’s rear and/or side setback requirements.
- §7.2.1 Building or Use Permit, Zoning By-Law (amended to May 2025; printed November 2025), p. 267
No building or structure shall be constructed, relocated, added to or demolished without a permit having been issued by the Building Commissioner.
- §4.2 Dimensional Regulations (Lot Coverage term), Zoning By-Law (amended to May 2025; printed November 2025), p. 169
Lot Coverage - that portion of a lot that is covered or occupied by any building or structure,
- §4.2.1, footnote (i) (Single Residence B lot coverage), Zoning By-Law (amended to May 2025; printed November 2025), p. 171
Buildings and structures created on any lot shall not result in lot coverage exceeding the following specified maximum percentages of the area of such lot: For lots containing less than 5,500 square feet – 30%; For lots containing at least 5,500 square feet but less than 6,000 square feet – 29%; For lots containing at least 6,000 square feet but less than 6,500 square feet – 28%; For lots containing at least 6,500 square feet but less than 7,000 square feet – 27%; For lots containing at least 7,000 square feet but less than 7,500 square feet – 26%; and For lots containing at least 7,500 square feet – 25%.
- §1.3 Definitions (Structure), Zoning By-Law (amended to May 2025; printed November 2025), p. 23
but excluding a fence, boundary wall, retaining wall, public utility pole, public utility supporting device or a structure with less than one hundred square foot ground coverage and a height of less than eight (8) feet.
- §1.3 Definitions (Building), Zoning By-Law (amended to May 2025; printed November 2025), p. 14
Building (or part or parts thereof) – a combination of any materials, whether portable or fixed, having a roof to form a structure for the shelter of persons, animals or property.
- §4.2 Dimensional Regulations (Height term), Zoning By-Law (amended to May 2025; printed November 2025), p. 169
The height limit under this method is 35 feet.