Massachusetts · Penalties in every state · What needs no permit here

Building without a permit in Massachusetts

By Mario Bailey Last checked 12 Jul 2026 · 4 official sources

Quick answer

Violation of the state building code is a criminal matter under M.G.L. c. 143, s. 94: punishable 'by a fine of not more than one thousand dollars or by imprisonment for not more than one year, or both, for each such violation,' and 'Each day during which a violation exists shall constitute a separate offense.' The code itself hooks into this: 780 CMR 114.4 (10th edition) makes anyone who violates 780 CMR or works in violation of a permit 'subject to penalties as prescribed by M.G.L. c. 143, s. 94(a),' and 115.3 applies the same penalties, with the per-day separate offense language, to continuing work after a stop work order.

Source: M.G.L. c. 143, s. 94; 780 CMR 114.4 and 115.3 (10th ed.). Details and the official text are cited below.

What Massachusetts law says

Cited from M.G.L. c. 143, s. 94; 780 CMR 114.4 and 115.3 (10th ed.): official text. Localities enforce these rules and may add their own fees and procedures on top.

Can you get a permit after the work is done?

The only state-level after-the-fact permitting provision in 780 CMR chapter 1 is for emergencies: under 105.2.1 and R105.2.1, 'Where replacements and repairs governed by 780 CMR must be performed in an emergency situation, the permit application shall be submitted within the next working business day to the building official.' There is no general as-built or retroactive permit process in the state code; unpermitted work is an unlawful act under 780 CMR 114.1, handled through notices of violation, stop work orders, and the c. 143 s. 94 penalties. Legalizing completed work is handled by local building officials through the ordinary permit process, which 780 CMR does not separately codify.

Cited from 780 CMR 105.2.1 and R105.2.1; 780 CMR 114 (10th ed.): official text.

The typical path, whatever your locality calls it: stop any ongoing work, contact the permit office before they contact you, apply for the permit describing what was actually built, and expect the office to require opening up or inspecting concealed work. Voluntarily coming forward generally goes better than waiting for a complaint or a sale to surface it.

What Massachusetts permit offices charge when work starts first

The statute above sets the ceiling; the bill comes from the local office. One Massachusetts jurisdiction we cover publishes a specific surcharge for work started before the permit, quoted here from the fee schedule or permit page we verified, each linked to the page that carries the citation.

Fees are flat per job type rather than valuation-based, and the city warns that working without a permit carries a penalty of triple the original permit fee with a $500.00 minimum on residential property.

Worcester · from the electrical permit page · last checked 15 Aug 2026

Jurisdictions not listed either publish no surcharge clause or publish one we could not quote from an official schedule; their permit pages state what we could verify.

Who can pull the permit

Yes for the building permit itself: 780 CMR R105.3 says 'the owner or authorized agent shall file a permit application.' The construction supervisor license (CSL) rules contain an explicit homeowner exemption at 780 CMR 110.R5.1.3.1: 'Any homeowner performing work for which a building permit is required shall be exempt from the licensing provisions of 780 CMR 110.R5, provided that if a homeowner engages a person(s) for hire to do such work, then such homeowner shall act as supervisor.' 'Homeowner' is defined as a person who owns a parcel on which he or she resides or intends to reside with a one- or two-family dwelling; a person who constructs more than one home in a two-year period does not qualify. The exemption does not extend to the trades: plumbing and gas work requires licensure under M.G.L. c. 142, s. 3, which contains no homeowner exemption, and the electrician licensing exemptions in M.G.L. c. 141, s. 1A likewise do not include homeowners.

Cited from 780 CMR R105.3; 780 CMR 110.R5.1.3.1 (10th ed.); M.G.L. c. 142, s. 3; M.G.L. c. 141, s. 1A: official text.

Common questions about unpermitted work in Massachusetts

What is the penalty for building without a permit in Massachusetts?: Violation of the state building code is a criminal matter under M.G.L. c. 143, s. 94: punishable 'by a fine of not more than one thousand dollars or by imprisonment for not more than one year, or both, for each such violation,' and 'Each day during which a violation exists shall constitute a separate offense.' The code itself hooks into this: 780 CMR 114.4 (10th edition) makes anyone who violates 780 CMR or works in violation of a permit 'subject to penalties as prescribed by M.G.L. c. 143, s. 94(a),' and 115.3 applies the same penalties, with the per-day separate offense language, to continuing work after a stop work order. (M.G.L. c. 143, s. 94; 780 CMR 114.4 and 115.3 (10th ed.))
Can you get a permit after the work is done in Massachusetts?: The only state-level after-the-fact permitting provision in 780 CMR chapter 1 is for emergencies: under 105.2.1 and R105.2.1, 'Where replacements and repairs governed by 780 CMR must be performed in an emergency situation, the permit application shall be submitted within the next working business day to the building official.' There is no general as-built or retroactive permit process in the state code; unpermitted work is an unlawful act under 780 CMR 114.1, handled through notices of violation, stop work orders, and the c. 143 s. 94 penalties. (780 CMR 105.2.1 and R105.2.1; 780 CMR 114 (10th ed.))
Who can pull a permit in Massachusetts?: Yes for the building permit itself: 780 CMR R105.3 says 'the owner or authorized agent shall file a permit application.' The construction supervisor license (CSL) rules contain an explicit homeowner exemption at 780 CMR 110.R5.1.3.1: 'Any homeowner performing work for which a building permit is required shall be exempt from the licensing provisions of 780 CMR 110.R5, provided that if a homeowner engages a person(s) for hire to do such work, then such homeowner shall act as supervisor.' 'Homeowner' is defined as a person who owns a parcel on which he or she resides or intends to reside with a one- or two-family dwelling; a person who constructs more than one home in a two-year period does not qualify. (780 CMR R105.3; 780 CMR 110.R5.1.3.1 (10th ed.); M.G.L. c. 142, s. 3; M.G.L. c. 141, s. 1A)

Was a permit needed in the first place?

Not every project needs one. Across the 2 Massachusetts jurisdictions we have verified, 0 answered rules need no permit at all and 8 turn on a size or scope condition the jurisdiction publishes. If the work falls under one of those, the question changes from penalties to paperwork.

What you can build without a permit in Massachusetts, jurisdiction by jurisdiction

Related situations in Massachusetts

How Massachusetts compares: building without a permit, state by state.

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From the Library

Your local permit office

Enforcement, after-the-fact fees, and the exact fix-it process are local. We cover these Massachusetts permit offices:

Official sources

This page summarizes state law from the official sources listed above, with a last checked date. It is not legal advice. Penalties and procedures are applied by local offices and courts case by case; for anything contested or high stakes, confirm with your permit office or a licensed professional in Massachusetts.