Accessory Structures in Springfield, MA: What Residents Actually Need to Know

If you live in Springfield or are thinking about moving there, accessory structures are one of those things you probably won't think about until they affect you directly. Springfield has 5 specific rules on the books covering different aspects of accessory structures, and some of them might surprise you.

Shed Rules

Springfield allows small sheds without building permits (typically under 100 to 200 sq ft) under MA Building Code (780 CMR). Setbacks still apply.

Key details: No Permit: Under 100 to 200 sq ft. Building Code: 780 CMR (statewide). Setbacks: 3 to 5 ft from property line. Habitation: Prohibited.

Unpermitted structure: retroactive permit with penalty. Setback violation: modification or removal. Habitation: immediate correction.

Springfield is more permissive than most cities when it comes to shed rules. That said, there are still limits.

ADU Rules

MA enacted ADU legislation (2024 Affordable Homes Act) requiring municipalities to allow ADUs by right on single-family lots. Recent and evolving mandate.

Key details: State Mandate: Yes (2024 Affordable Homes Act). By Right: One ADU per single-family lot. Implementation: Recent, still developing. MBTA Act: Related housing mandate.

Municipalities cannot deny conforming ADU applications. Unpermitted ADU: standard building code enforcement under 780 CMR.

Garage Conversions

Garage conversions in Springfield require building permits under MA Building Code (780 CMR). May qualify as ADU under recent state legislation.

Key details: Permit: Building permit (780 CMR). ADU Potential: May qualify under new law. Parking: Check local zoning. Fire Sep.: May need upgrades.

Unpermitted conversion: code enforcement. Must bring to code or restore. Safety violations: immediate correction.

Carport Rules

Springfield requires permits for carport construction. Setback requirements, height limits, and lot coverage maximums apply.

Key details: Permit: Required. Side Setback: 3 to 5 feet typical. Lot Coverage: Counts toward maximum. HOA: May restrict or prohibit.

Unpermitted carports: stop-work orders, required removal or retroactive permitting with penalty fees. Fines $200 to $1,000.

Tiny Homes

Springfield regulates tiny homes differently based on whether they are on a permanent foundation or on wheels. Zoning and minimum square footage requirements apply.

Key details: Foundation: Treated as dwelling. On Wheels: RV classification typically. Min Size: 400 to 800 sq ft varies. ADU Path: May allow as secondary.

Unpermitted dwellings: removal or retroactive permitting. Zoning violations: fines and required relocation. Occupancy without certificate: prohibited.

The Bottom Line

Springfield's accessory structures rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Springfield is broadly strict or permissive.

All of the above reflects Springfield's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.