Bathroom Remodel — Massachusetts license requirements

Verified 2026-10-0510 official sources4 classification relations4 scope assertionsIndexation gate: passed

01 The project

The starting point is the work itself — Bathroom Remodel in Massachusetts. The job determines which trades are involved, and the trades determine which license classifications may be required.

Component	Trade
Plumbing	Plumbing
Electrical	Electrical
Tile	Tile
Framing	Framing
Drywall	Drywall
Painting	Painting

02 Jurisdiction

This project is evaluated for Massachusetts — the volume-threshold state. There is no project-value general-contractor licence: the individual Construction Supervisors License (OPSI/BBRS, 780 CMR) turns on building type and the 35,000-cubic-foot test (a registered design professional controls larger buildings), the HIC registration (c. 142A) governs the home-improvement contract on existing owner-occupied 1–4 unit property, and the trades are licensed individually (248 CMR plumbing/gas, 237 CMR electrical). Massachusetts jurisdiction page.

Limitation — local permit fees are unread; no state bond, no state liability minimum

Local building and permit fees were not read — LOCAL_AUTHORITY_REQUIRED — and the CSL initial licensure fee is unpublished (NOT_VERIFIED). Massachusetts imposes no surety bond and no state general-liability minimum on these credentials (verified absences; the Guaranty Fund is the consumer instrument), but every employer needs workers' compensation. State requirements are not the complete story for any city or town.

03 Trade → license

Relations below are recorded per state — only this jurisdiction's classifications are shown.

Trades involved: Plumbing, Electrical, Tile, Framing, Drywall, Painting.

May require HIC-REGISTRATION — Home Improvement Contractor Registration (HIC) confirmed S-MA-HIC-REG rule MA-HIC-REGISTRATION
A bathroom remodel on an existing owner-occupied 1–4 unit home is exactly the HIC registration's scope; the contractor who signs the contract must hold it.
May require JOURNEYMAN-PLUMBER — Journeyman Plumber confirmed S-MA-PL-APPLY rule MA-PLUMBING-LICENSE
Fixture, drain and supply work is licensed trade work (248 CMR) — journeyman/master plumber, application $31 + license $52/$78, 12 hours of CE at renewal.
May require JOURNEYMAN-ELECTRICIAN — Journeyman Electrician confirmed S-MA-ELEC-APPLY rule MA-ELECTRICAL-LICENSE
CONDITIONAL — lighting, exhaust fans and GFCI receptacles are electrical work under the board's licenses (237 CMR), renewed with 21 hours of CE on the July 31 three-year cycle.
Alternative path CSL-RESTRICTED — Construction Supervisor License — Restricted / One- and Two-Family Dwellings confirmed S-MA-HIC-RES rule MA-BUILDING-PERMIT
ALTERNATIVE — the page's verbatim line: 'Some structural work like a kitchen renovation may require both a CSL and an HIC registration but not necessarily held by the same person.' Where the remodel moves walls or structure, a CSL (restricted/one-and-two-family or unrestricted) supervises; the chart's kitchen row reads 'CSL maybe'.

04 Scope

What the official sources say about the work involved — typed assertions, never a boolean "covers". Interpretations are marked as such.

Officially included CSL-RESTRICTED Directly Supervise Code Regulated Work On Any One Or Two Family Dwelling And Accessories Irrespective Of Size (may_perform) 780 CMR; CSL Candidate Handbook S-MA-CSL-HANDBOOK
Officially included HIC-REGISTRATION Solicit Bid On Or Perform Contracting Work On Existing Owner Occupied 1 To 4 Unit Property (may_perform) M.G.L. c. 142A §9, §11 S-MA-HIC-REG
The credential the contractor who SIGNED the homeowner's contract must hold.
Officially excluded HIC-REGISTRATION Fencing Or Flooring Work Without An Hic Registration Per The Official Chart (may_not_perform) HIC Contractor Resources chart (780 CMR applied locally) S-MA-HIC-RES
Officially included JOURNEYMAN-PLUMBER Plumbing Work Documented By An Education Verification And A Statement Of Experience Signed By The Supervising Master (may_perform) M.G.L. c. 142; 248 CMR 11.00 S-MA-PL-APPLY
Exact hour thresholds live in 248 CMR 11.00 (research §L item 5).

05 Requirements

Requirement	Kind	Statement	Source
HIC registration is required to solicit, bid on or perform work on existing owner-occupied 1–4 unit property HIC Registration and Renewal + c. 142A §9 verbatim (read 2026-10-05)	registration	mass.gov 'Home Improvement Contractor Registration and Renewal', verbatim: 'Contractors, subcontractors, partnerships, or corporations that solicit, bid on, or perform contracting work in Massachusetts on an existing, owner-occupied residential property with one to four units, must be registered as a Home Improvement Contractor (HIC). An HIC Registration is different from a Construction Supervisor License (CSL) and they are not interchangeable.' M.G.L. c. 142A §9: 'No contractor or subcontractor shall undertake, offer to undertake, or agree to perform residential contracting services unless registered therefor with the approval of the office of consumer affairs and business regulation.'	S-MA-HIC-REG Source S-MA-HIC-REG — Office of Consumer Affairs and Business Regulation (OCABR) — Home Improvement Contractor Program HIC Registration and Renewal — $150 registration, Guaranty Fund tiers, $100 renewal — HIC Registration and Renewal + c. 142A §9 verbatim (read 2026-10-05) https://www.mass.gov/info-details/home-improvement-contractor-registration-and-renewal Retrieved 2026-10-05 · last verified 2026-10-05 Who must register (solicit, bid on or perform contracting work on an existing, owner-occupied residential property with one to four units); register as individual/proprietorship/partnership/corporation; DBA needs the business certificate filed with the city/town clerk. Fees verbatim: $150 registration fee; separate mandatory Guaranty Fund payment by employees — 0–3: $100, 4–10: $200, 11–30: $300, more than 30: $500. Renew every two years, $100 renewal fee; if expired, reapply at $150 + $100–500. Supplemental employee cards $10 each, duplicates free. Account updates within 30 days. Foreign corporations must first register with the Secretary of the Commonwealth.
The official chart — which jobs need a CSL, an HIC registration and a building permit HIC/CSL/permit chart verbatim (read 2026-10-05)	permit	mass.gov 'What Work Requires an HIC, CSL, or Building Permit?' chart, verbatim decisions read 2026-10-05 (job \| CSL \| HIC \| permit) — the chart's third cell is a project-specific / building-official-dependent flag, rendered here as 'conditional': Demolition yes\|yes\|yes (Demolition CSL minimum); Insulation yes\|yes\|yes (Insulation CSL minimum); Roofing, new or replacement yes\|yes\|yes (Roofing CSL minimum); Roofing minor repairs yes\|yes\|conditional (permit unless an ordinary repair per the building official); Siding yes\|yes\|yes and Window install/replace yes\|yes\|yes (Window/Siding CSL minimum); Solid Fuel Burning Appliance yes\|yes\|yes (Appliance CSL minimum); Shed construction yes\|yes\|conditional (permit + CSL if floor area > 200 sq ft on 1–2 family lots, 120 sq ft for others); Masonry related to building yes\|yes\|yes; Masonry walls not retaining conditional\|no\|conditional (permit + CSL if greater than 4 ft); Walls exterior retaining conditional\|yes\|conditional (permit + CSL if greater than 4 ft); Gutters conditional\|yes\|conditional (permit + CSL if piercing the building envelope); Fencing conditional\|no\|conditional (no permit or CSL if the fence is under seven feet high); Flooring/finish/carpet/tile no\|no\|conditional; Kitchen Cabinets and Shelving conditional\|yes\|no; Carpentry, trim conditional\|yes\|no; Door Replacement yes\|yes\|conditional; Plumbing conditional\|no\|conditional (licensed trades as required by law; permit + CSL if cutting/notching building elements); Wiring conditional\|no\|conditional (licensed trades as required by law; permit + CSL if cutting/notching building elements). The page is 'for general guidance only — whether a CSL or building permit is required depends on project specifics … always consult with the appropriate building official.'	S-MA-HIC-RES Source S-MA-HIC-RES — Office of Consumer Affairs and Business Regulation (OCABR) — Home Improvement Contractor Program HIC Contractor Resources — 'What work requires an HIC, CSL, or building permit?' chart — HIC/CSL/permit chart verbatim (read 2026-10-05) https://www.mass.gov/info-details/hic-contractor-resources Retrieved 2026-10-05 · last verified 2026-10-05 The official job-type chart (CSL / HIC / permit columns) read verbatim — the backbone of every scope assertion and permit rule in this seed. Plus: 'Larger projects, such as building a deck or an addition to an existing home require a CSL'; a kitchen renovation may require both a CSL and an HIC registration 'not necessarily held by the same person'; 'The contractor who signed the contract with the homeowner must have an HIC registration'; for work estimated at $1,000 or more a written contract with the statutory provisions is required; permits/contracts/advertising must contain the active registration number; every building permit must state that persons contracting with unregistered contractors do not have access to the Guaranty Fund; contractors may not act as mortgage brokers or represent lenders.
Plumbing and gas-fitting work is licensed by the Board of State Examiners of Plumbers and Gas Fitters Board overview + apply pages verbatim (read 2026-10-05)	license	Board overview, verbatim: the board 'Conducts exams and issue licenses for journeyman and master plumbers and gas fitters. Registers apprentice plumbers and gas fitters. Issues corporate and …' licenses. Applications (journeyman plumber, master plumber, journeyman/master gas fitter) are submitted online through eLIPSE with an Education Verification Form, a Statement of Experience Form signed by the supervising master, a 2x2 photo and a CORI acknowledgement — 'Applications mailed to the board will be returned.'	S-MA-PL-BOARD Source S-MA-PL-BOARD — Board of State Examiners of Plumbers and Gas Fitters Board of State Examiners of Plumbers and Gas Fitters — overview — Board overview + apply pages verbatim (read 2026-10-05) https://www.mass.gov/orgs/board-of-state-examiners-of-plumbers-and-gas-fitters Retrieved 2026-10-05 · last verified 2026-10-05 'Conducts exams and issue licenses for journeyman and master plumbers and gas fitters. Registers apprentice plumbers and gas fitters. Issues corporate and …' licenses. Also publishes the state plumbing code, board policies and variance applications.
Gas fitting is a SEPARATE license from plumbing (journeyman $52 / master $97) Apply pages + renewal page verbatim (read 2026-10-05)	license	The board issues gas-fitter licenses on their own track: 'Apply for a Journeyman Gas Fitter license' requires 'A Statement of Experience form signed by your supervising master gas fitter' with an application fee of $31 and a license fee of $52; 'Apply for a Master Gas Fitter license' carries an application fee of $31 and a license fee of $97. Renewal fees are gas fitter apprentice $40, journeyman $52, master $97, each with 6 hours of approved CE.	S-MA-GF-APPLY Source S-MA-GF-APPLY — Board of State Examiners of Plumbers and Gas Fitters Apply for a Journeyman Gas Fitter license — application $31, license $52 — Apply pages + renewal page verbatim (read 2026-10-05) https://www.mass.gov/how-to/apply-for-a-journeyman-gas-fitter-license Retrieved 2026-10-05 · last verified 2026-10-05 Fee table verbatim: Application fee $31 each; License fee $52 each. Requires a Statement of Experience form signed by the supervising master gas fitter; applications online through eLIPSE.
Electrical and systems work is licensed by the Board of State Examiners of Electricians (237 CMR) Fee section verbatim (read 2026-10-05)	license	The board licenses journeyman and master electricians and the systems technician/systems contractor classes. Eligibility for initial licensure is set by 237 CMR 13.00; applications, renewals and reinstatements are submitted online through eLIPSE with a DOL CORI form. Fees (verbatim): journeyman & systems technician application $31 + license $104; master electrician & systems contractor application $66 + license $155; examination fees paid to PSI total $135 for both portions ($80 trade portion, $55 business/practical portion); re-exams are charged per portion retaken.	S-MA-ELEC-APPLY Source S-MA-ELEC-APPLY — Board of State Examiners of Electricians Apply for an individual electrical or systems license — fees + PSI exam — Fee section verbatim (read 2026-10-05) https://www.mass.gov/how-to/apply-for-an-individual-electrical-or-systems-license Retrieved 2026-10-05 · last verified 2026-10-05 Fee section verbatim: Journeyman & Systems Technician — Application Fee $31, License Fee $104; Master Electrician & Systems Contractor — Application Fee $66, License Fee $155; 'Examination Fees (Paid directly to PSI when scheduling exams): Total for both portions is $135 ($80 Trade portion, $55 Business/Practical portion)'. Fee payments are non-refundable; eligibility per 237 CMR 13.00; applications through the eLIPSE portal with a DOL CORI form; Valor Act reductions apply.
Work estimated at $1,000 or more requires a written contract with the statutory provisions HIC Contractor Resources verbatim (read 2026-10-05)	contract rule	mass.gov 'HIC Contractor Resources', verbatim: 'For work estimated at $1,000 or more, the contractor and homeowner must have a written contract containing certain required provisions as specified in the law. See Home Improvement Contract Requirements, Details, and Sample Language.' The sample-language page publishes the required provisions and the cancellation notice contractors must include.	S-MA-HIC-RES Source S-MA-HIC-RES — Office of Consumer Affairs and Business Regulation (OCABR) — Home Improvement Contractor Program HIC Contractor Resources — 'What work requires an HIC, CSL, or building permit?' chart — HIC Contractor Resources verbatim (read 2026-10-05) https://www.mass.gov/info-details/hic-contractor-resources Retrieved 2026-10-05 · last verified 2026-10-05 The official job-type chart (CSL / HIC / permit columns) read verbatim — the backbone of every scope assertion and permit rule in this seed. Plus: 'Larger projects, such as building a deck or an addition to an existing home require a CSL'; a kitchen renovation may require both a CSL and an HIC registration 'not necessarily held by the same person'; 'The contractor who signed the contract with the homeowner must have an HIC registration'; for work estimated at $1,000 or more a written contract with the statutory provisions is required; permits/contracts/advertising must contain the active registration number; every building permit must state that persons contracting with unregistered contractors do not have access to the Guaranty Fund; contractors may not act as mortgage brokers or represent lenders.

06 Rule: MA-HIC-REGISTRATION

'Contractors, subcontractors, partnerships, or corporations that solicit, bid on, or perform contracting work in Massachusetts on an existing, owner-occupied residential property with one to four units, must be registered as a Home Improvement Contractor (HIC).' c. 142A §9: no residential contracting services unless registered. Registration $150 + a $100–$500 Guaranty Fund payment; renewal every 2 years at $100.

Outcome	Conclusion	Caveats
required	hic_registration_required	An HIC registration is NOT interchangeable with a Construction Supervisors License — a structural job can need both. The registration number must appear in permits, contracts and advertising.
registered	hic_registration_satisfied	Check it is active and that the number appears on the contract (MA-HIC-REGNUMBER).

Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-MA-HIC-REG S-MA-142A-9

07 Rule: MA-PLUMBING-LICENSE

The Board of State Examiners of Plumbers and Gas Fitters licenses journeyman and master plumbers and registers apprentices (M.G.L. c. 142; 248 CMR). Applications run only through eLIPSE with an Education Verification Form, a Statement of Experience signed by the supervising master, a photo and a notarized CORI page — $31 application + $52/$78 license.

Outcome	Conclusion	Caveats
plumbing-work	plumbing_license_required	Gas fitting needs a SEPARATE gas fitter license (MA-GAS-FITTER-LICENSE). Local plumbing inspectors administer the state plumbing code in each city/town.
no-plumbing-work	plumbing_license_not_applicable	The chart still routes 'Plumbing' to the licensed trades with a 'permit maybe' column.

Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-MA-PL-BOARD S-MA-PL-APPLY

08 Rule: MA-ELECTRICAL-LICENSE

The Board of State Examiners of Electricians licenses journeyman and master electricians plus systems technicians and systems contractors (M.G.L. c. 141; 237 CMR). Eligibility is set by 237 CMR 13.00; exams are PSI ($135 total: $80 trade + $55 business/practical); fees $31/$104 (journeyman, systems technician) and $66/$155 (master, systems contractor).

Outcome	Conclusion	Caveats
electrical-work	electrical_license_required	The chart routes 'Wiring' to licensed trades with 'permit maybe' and a CSL if building elements are cut or notched.
no-electrical-work	electrical_license_not_applicable	—

Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-MA-ELEC-APPLY

09 Rule: MA-BUILDING-PERMIT

The official 'What work requires an HIC, CSL, or building permit?' chart (mass.gov) decides job-by-job — including the numeric local triggers: a fence under seven feet needs no permit or CSL; masonry or exterior retaining walls over four feet need permit + CSL; a shed needs permit + CSL above 200 sq ft of floor area on 1–2 family lots (120 sq ft for others); roofing new/replacement, insulation, demolition, siding, windows and solid-fuel appliances are permit + CSL + HIC. 'For general guidance only … always consult with the appropriate building official.'

Outcome	Conclusion	Caveats
permit-and-csl	permit_and_csl_required	Sheds: permit + CSL above 200 sq ft of floor area on 1–2 family lots (120 sq ft for others). Roofing minor repairs: permit 'maybe' — needed unless the building official calls it an ordinary repair.
no-permit-no-csl	no_permit_no_csl	Over seven feet the columns flip — check with the building official.
flooring	no_csl_hic_permit_maybe	'Building permit required if fire resistance rating in 3- and 4-family.'
licensed-trade	licensed_trade_permit_maybe	The trade licence itself is decided by MA-PLUMBING-LICENSE / MA-ELECTRICAL-LICENSE.

Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-MA-HIC-RES

10 Rule: MA-GAS-FITTER-LICENSE

Gas fitting is licensed SEPARATELY from plumbing: journeyman gas fitter ($31 application + $52 license) and master gas fitter ($31 + $97), renewing with 6 hours of approved CE ($52/$97, $57 late after May 1). Holding a plumber license does not, by itself, authorize gas fitting.

Outcome	Conclusion	Caveats
gas-work	gas_fitter_license_required	A plumber license does not substitute — the tracks, fees and CE hours are separate.
plumber-only	gas_fitter_not_required	Adding gas equipment (furnace, water heater, range) flips this outcome on.

Rule confidence: confirmed. Missing inputs produce NOT_DETERMINED — never a forced answer. Sources: S-MA-GF-APPLY S-MA-GF-APPLY-MASTER S-MA-PL-RENEW

11 Who holds what on a remodel

Portion of the job	Massachusetts credential	Source
The contract with the homeowner	HIC registration (c. 142A) — the signer must hold it	S-MA-HIC-REG
Structural changes	'may require both a CSL and an HIC registration but not necessarily held by the same person'	S-MA-HIC-RES
Fixtures, drains, supply	journeyman/master plumber ($31 + $52/$78; 12 hours CE)	S-MA-PL-BOARD
Gas piping in the job	gas fitter licence — a SEPARATE track from plumbing	S-MA-GF-APPLY
Lighting, fans, receptacles	journeyman/master electrician (21 hours CE / 3 years)	S-MA-ELEC-APPLY

Note: the official HIC/CSL/permit chart (19 job types with CSL / HIC / permit columns) and the 35,000-cubic-foot threshold (Above 35,000 cubic feet the registered design professional controls and no CSL is required) are stated in full on the Massachusetts jurisdiction page.

Evidence

S-MA-142A-9statute

Massachusetts General Court — General Laws (malegislature.gov)

M.G.L. c. 142A §9 — Registration of contractors or subcontractors

https://malegislature.gov/Laws/GeneralLaws/PartI/TitleXX/Chapter142A/Section9