Maine Shed Rules Law: Statewide Accessory Structures Rules (2026)

Key Facts

Code authority: 10 MRSA 9722
Exemption size: 200 sq ft or less
Stories: One only
Electrical: Permit still required
Setbacks: Local rules apply

Full Breakdown

Under 10 MRSA section 9722 and the Maine Uniform Building and Energy Code (MUBEC), which adopts the IRC with state amendments, detached one-story accessory structures used as tool sheds, playhouses, or similar uses do not require a building permit if floor area is 200 square feet or less. This applies statewide in MUBEC-adopted jurisdictions. Electrical work still requires a permit under 32 MRSA section 1101 et seq. Shoreland zoning setbacks and local zoning dimensional standards continue to apply regardless of permit exemption.

Violations & Penalties

Building without a required permit carries fines up to $1,000 per violation under MUBEC enforcement. Electrical violations carry separate penalties under 32 MRSA section 1153.

Frequently Asked Questions

Does the 200 square foot exemption mean no rules apply?

No. It only waives the state building permit. Zoning setbacks, shoreland zoning, electrical permits, and homeowner association rules can still restrict shed placement and size.

Can my town require a permit for a 100 square foot shed?

Towns cannot require a state building permit below the MUBEC threshold but may impose local zoning permits for setback or land-use compliance.

Maine Building Code Sheds Under 200 Square Feet