All Cities / MA / Boston
Permit Fees in Boston, MA
✓ Verified from published fee schedule
Based on Inspectional Services Department (ISD) published fee schedule
Data last verified: March 16, 2026
All trade fees confirmed from official Boston.gov Building Division fee schedule.
Permit Cost by Project
Kitchen Remodel$395
Bathroom Remodel$270
Deck / Patio$130
Roof Replacement$120
Window Replacement$80
Electrical Panel$70
HVAC Replacement$25
Water Heater$25
Do You Need a Permit?
No — Paint, cosmetic updates, fixture swaps
Yes — Bathroom remodel ($270)
Yes — Kitchen remodel ($395)
Yes — Roof replacement ($120)
Yes — HVAC replacement ($25)
Yes — Water heater ($25)
Yes — Deck / patio ($130)
Yes — Window replacement ($80)
Yes — Electrical panel ($70)
Verified Permit Cost by Project Type
Kitchen Remodel
$395
Building (long form): 50+(25x10)=$300. Plumbing: 20+(3 fixtures x5)=$35. Electrical: 20+(15 fixtures x1)=$35. Gas: 20+(1 appliance
Bathroom Remodel
$270
Building (long form): 50+(15x10)=$200. Plumbing: 20+(4 fixtures x5)=$40. Electrical: 20+(10 fixtures
Deck / Patio
$130
Building (long form):
Roof Replacement
$120
Building (short form):
Window Replacement
$80
Building (short form):
Electrical Panel
$70
Electrical (service change): 20+(200A
HVAC Replacement
$25
Gas permit: 20+(1 appliance
Water Heater
$25
Plumbing: 20+(1 fixture
Two Types of Permits
Building Permit
Structural & Major Work
Covers structural changes, additions, remodels, and major renovations. Required when you're changing the layout, load-bearing walls, or footprint of your home.
Usually pulled by: General contractor or homeowner
Trade Permit
Specialty Systems
Covers plumbing, electrical, HVAC/mechanical, and roofing. Required when you're touching water lines, wiring, ductwork, or roof structure. Most remodels need trade permits on top of the building permit.
Usually pulled by: Licensed trade contractor (plumber, electrician, HVAC tech)
Work that typically requires a permit:
• New construction (residential or commercial)
• Additions: garage, deck, porch, ADU, carport
• Expanding or demolishing an existing structure
• Swimming pool installation
• HVAC installation or replacement
• Adding, moving, or removing walls
• Roof installation or replacement
• Finishing a basement
• Solar panel installation
• EV charging station installation
• Generator installation
• Fence installation
• Siding installation
• Window installation or replacement
Work that usually doesn't need a permit:
• Painting interior or exterior walls
• Installing cabinets without changing the layout
• Replacing carpet or flooring
• Replacing fixtures in the same location
• Cosmetic updates (countertops, backsplash, trim)
• Landscaping and yard work
Rules vary by city. When in doubt, call your local building department before starting work.
Permit Cost Calculator · Boston
$270
Verified total permit cost in Boston
✓ Verified from Inspectional Services Department (ISD) published fee schedule
A typical bathroom remodel in Boston costs 270 dollars in permits. That covers the separate building plumbing and electrical fees. I pulled these numbers directly from the Boston Building Division Fees PDF revised May 2023.
How Boston Calculates Building Permit Fees
Boston doesn't roll everything into one nice package. You pay separate fees for each trade. The building permit uses a valuation formula that starts at 50 dollars for long form applications.
Then add 10 dollars per thousand of project value. A 15000 dollar job costs exactly 200 dollars. Short form drops the base to 20 dollars but keeps the same per thousand rate.
Plumbing runs 20 dollars plus 5 dollars per fixture. Four fixtures in a bathroom equal 40 dollars. Electrical starts at 20 dollars. No service change means one dollar per fixture.
A kitchen remodel hits 395 dollars once you add it all up. That isn't cheap. (I had to cross reference three tables in the PDF to confirm the formulas.) The calculator on this page handles your exact numbers.
Boston stays consistent. No sliding scale, and no surprises in the rate. If your contractor bid leaves out permit costs then add at least 300 dollars yourself.
Chuck’s Take
“I see bids miss these add on trade permits all the time. Boston charges each one separately so the total sneaks up on you. Tell your contractor to break it out in writing or add 300 dollars yourself.”
Leonard “Chuck” Thompson, LC Thompson Construction Co.
What Needs a Permit in Boston?
One story detached sheds under 200 square feet don't need a permit. Fences under 7 feet high get the same break. Retaining walls under 4 feet usually don't either.
But don't count on those exemptions blindly. Any electrical or plumbing work still requires its own permit. A deck always needs approval. Same for basement finishing or roof replacement.
The rules come from the 2021 IRC with Massachusetts amendments under 780 CMR. I checked the exemptions list twice. Most finish work like painting stays free. You still can't skip the trades.
If you wonder whether your job needs approval just check the list. Better to ask than guess. The city doesn't forgive easily.
What Happens If You Skip Permits in Boston
Unpermitted work triggers penalties under M.G.L. c.143 Section 94(a). Each day counts as a separate offense. The same applies under M.G.L. c.148 Section 34C.
Stop work orders come fast. You can't ignore them. Retroactive permits often cost more than the original fee.
I found the enforcement language in the adopted code sections. Boston follows the state rules strictly here. Nobody wants that headache on their project.
If you get caught then expect higher costs and delays. Pull the permit up front. The math never works in your favor otherwise.
How Long Is a Building Permit Good For in Boston?
Your permit lasts 180 days before you must start work. The same 180 day clock applies if you abandon the job. After that the permit becomes invalid.
Extensions exist. You must request them in writing before expiration with good reason. Each extension runs up to 180 days.
The application itself expires after 180 days if you don't pursue it. I checked the exact language in R105.5. Plan your timeline carefully or you'll lose the approval.
Who Should Pull the Permit in Boston?
Contractors normally pull permits in Boston. They must hold current HIC registration and show workers compensation insurance. The registration number goes right on the application.
Homeowners can pull their own under the exemption in 780 CMR 110.R3.8.1.1. That exemption doesn't apply to manufactured buildings. You still sign the affidavit and take full responsibility.
Your contractor should handle this. If he asks you to pull it yourself that raises a red flag. Confirm it sits in the contract, and don't assume it will happen.
Chuck’s Take
“Never pull the permit for the contractor. That's my rule everywhere including Boston. If the guy wants you to sign as owner that tells you something. Make sure his license and insurance sit on the application.”
Leonard “Chuck” Thompson, LC Thompson Construction Co.
Why Boston Uses Separate Trade Permits
Boston requires separate permits for every trade. You pay building then add plumbing electrical and gas fees individually. This differs from cities that combine everything into one charge.
The Boston Building Division Fees PDF spells out each category clearly. Gas permits cover HVAC and water heaters at 20 dollars plus 5 per appliance. No state surcharge appears in the schedule I reviewed.
The city follows 780 CMR with extensive Massachusetts amendments. That creates extra steps but keeps each trade accountable. (The PDF buries some details on later pages so read carefully.)
If your project touches multiple systems then plan on multiple checks. That structure isn't going away. Know it before you start.
Quick Reference · Boston Permit Requirements
| Homeowner Task | Permit? | Est. Cost |
|---|---|---|
| Paint interior / exterior | NO | Cosmetic |
| Replace flooring | NO | Cosmetic |
| Replace kitchen cabinets (same layout) | NO | Cosmetic |
| Swap a light fixture (same location) | NO | Cosmetic |
| Replace a water heater | YES | $25 plumbing |
| Add / move electrical outlets | YES | $70 electrical |
| Remodel a bathroom | YES | $270 building, plumbing, electrical |
| Remodel a kitchen | YES | $395 building, plumbing, electrical, gas |
| Replace / repair roof | YES | $120 building |
| Build a deck or patio | YES | $130 building |
| Build a fence (≤6 ft) | NO | Typically exempt |
| Install solar panels | YES | — Solar / PV |
| Replace HVAC system | YES | $25 gas |
| Replace windows (new opening) | YES | $80 building |
∗ Costs are verified for Boston, MA from published fee schedule. Always confirm with your local building department.
Frequently Asked · Boston
How much does a building permit cost in Boston?
A bathroom remodel costs 270 dollars in total permits. That includes the 200 dollar building fee on a 15000 dollar project plus plumbing and electrical. The calculator gives you the exact figure for your job.
Do I need a permit to replace a water heater in Boston?
Yes you need a plumbing permit. It costs 25 dollars for the typical water heater replacement. The fee covers the 20 dollar base plus 5 dollars for the one fixture.
How much is a plumbing permit in Boston?
Plumbing permits start at 20 dollars, and then add 5 dollars per fixture. A full bathroom with four fixtures costs 40 dollars according to the fee schedule.
Do I need a permit to build a deck in Boston?
Yes you need a building permit for a deck. An 8000 dollar project costs 130 dollars using the long form calculation. The city doesn't exempt decks from review.
Do I need a permit for electrical work in Boston?
Most electrical work requires a permit. No service change costs 20 dollars plus one dollar per fixture. A 200 amp panel upgrade runs 70 dollars.
Can homeowners pull their own permits in Boston?
Homeowners can pull permits for their primary residence. The exemption exists under 780 CMR 110.R3.8.1.1 but doesn't cover manufactured buildings. You must still meet all code and insurance rules.
Cite This Data
David Olson. (2026). Building permit fees in Boston, MA. PermitCalculator. https://permitcalculator.com/cities/boston-ma/
APA format
David Olson. “Building Permit Fees in Boston, MA.” PermitCalculator. Accessed March 19, 2026. https://permitcalculator.com/cities/boston-ma/
Chicago format
Data Attribution