Smell Gas? Do This Immediately.
- Leave the building now — do not use any electrical switches or open flames
- Call 911 and your gas company from outside — they shut off service at the meter
- Do not re-enter until the gas company clears the building
- Call a licensed plumber for the repair — after the gas company confirms it is safe
Gas Line Repair Costs in Boston (2026)
| Service | Cost Range |
|---|---|
| Gas leak detection / inspection | $150–$425 |
| Gas line repair (minor) | $225–$575 |
| Gas line repair (major) | $725–$2900 |
| New gas line installation | $725–$2900 |
| Gas line relocation | $725–$2175 |
| Whole-house gas repiping | $4350–$11600 |
All gas line work in Massachusetts requires a licensed plumber and a permit. Prices as of 2026 for Boston.
License required: In Massachusetts, all gas line work must be performed by a licensed plumber with gas certification. Verify any contractor at https://www.mass.gov/orgs/board-of-state-examiners-of-plumbers-and-gas-fitters before work begins. Never allow unlicensed gas work.
What to Expect During Gas Line Work in Boston
1
Licensed plumber pulls a permit
Gas work in Boston requires a permit from Suffolk County. The plumber pulls this — not you.
2
Pressure test before and after
The line is pressure-tested to confirm there are no leaks before gas service is restored.
3
Gas company reconnects service
After repair and inspection, your gas utility restores service — the plumber cannot do this step.
4
Inspection sign-off
A city inspector signs off on the permitted work before use. This protects you and satisfies your insurance.
Common Plumbing Issues in Boston
Lead service lines in pre-1940 homes
Very old housing stock — some 19th century
Deep freeze (36+ inches)
High labor rates in New England
Frequently Asked Questions
How much does gas line repair cost in Boston?
Minor gas line repairs in Boston run $225–$575. Major repairs and new line installation cost $725–$2900. Whole-house gas repiping ranges from $4350–$11600. All gas line work requires a licensed plumber and a permit in Massachusetts.
Is a gas leak an emergency?
YES — immediately. Leave the building, do not operate any electrical switches or open flames, call 911 and your gas company first to shut off service, then call a licensed plumber. Do NOT attempt to find or fix the leak yourself. Do not re-enter until the gas company has cleared the building.
Can I repair a gas line myself in Boston?
NO. Gas line work requires a licensed plumber and a permit in Massachusetts. DIY gas line work is illegal and extremely dangerous — even a minor mistake can result in explosion, fire, or carbon monoxide poisoning. Always verify your plumber's license at https://www.mass.gov/orgs/board-of-state-examiners-of-plumbers-and-gas-fitters before gas work begins.
How do I find a licensed gas line plumber in Boston?
Use RateYourPlumber.com to find licensed, reviewed plumbers in Boston who handle gas line work. Verify any plumber's license at https://www.mass.gov/orgs/board-of-state-examiners-of-plumbers-and-gas-fitters — confirm the license specifically covers gas work. Get a written permit number before work starts.
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