01Overview
Gas piping carries natural gas from the utility meter to appliances: ranges, water heaters, boilers, dryers. Work on it is licensed work everywhere in the region. After any leak or shutoff, the system usually has to pass a pressure test before the utility restores service.
02Signs you may need this
- Planning a new gas appliance or moving one
- Gas was shut off by the utility after a leak report or inspection
- Your building is due for its periodic gas piping inspection (NYC)
- Corroded or old flexible connectors behind appliances
- Appliance flames that are yellow or lazy instead of blue (call the utility if you also smell gas)
03Common causes
| Situation | What it usually involves |
|---|---|
| New or moved appliance | New branch line, shutoff valve and connector |
| Utility shutoff | Find and repair the leak; pressure test; utility restores service |
| Periodic inspection (NYC) | Licensed inspection of exposed piping in public spaces and mechanical rooms |
| Old connectors | Replace with new approved connectors and valves |
04Possible solutions
| Work | Notes |
|---|---|
| Appliance connection | Shutoff valve plus approved connector |
| New gas line | Sized for the total load; permit required |
| Leak repair and pressure test | Required before the utility restores gas |
| Periodic inspection (NYC LL152) | Certification filed with DOB |
The right approach depends on what the plumber finds on site. This table is general information, not a diagnosis.
05What affects the cost
Prices are set by the plumber and depend on what's found. These factors usually matter most:
- Length and route of new piping
- Number of appliances
- Access through walls and floors
- Testing, inspection and utility coordination
- Permits and filings
06What a plumber typically checks
- Reviews the existing gas piping and meter location
- Checks pipe sizing for the appliances connected
- Locates leaks with approved methods
- Performs a pressure test where required
- Coordinates with the utility to restore service
07By building type
- One- & two-family houses
- Appliance connections, water heater and boiler lines. NYC's periodic inspection law excludes them.
- Apartment buildings
- Periodic inspections in NYC; building-wide shutoffs and restoration can take time.
- Co-ops & condos
- Appliance changes usually need board approval.
08Local considerations
New York City
Under Local Law 152, buildings with gas piping (except one- and two-family homes) must have it inspected at least once every four years by a Licensed Master Plumber, on a schedule by community district. All gas piping work is licensed work.
Long Island, Westchester & Hudson Valley
Gas work is licensed work under county or municipal rules. The utility restores service after repairs pass inspection.
New Jersey
Gas piping falls under the Uniform Construction Code's fuel gas subcode. Work needs a permit and inspection through the municipal construction office.
09Permits & licensing
- NYC: gas work by Licensed Master Plumbers; LL152 inspections every four years for covered buildings
- New Jersey: fuel gas subcode; permit and inspection required
- NY suburbs: county and town rules apply
Rules differ by jurisdiction. Compare NYC, Long Island, Westchester and New Jersey.
10Frequently asked questions
How long does it take to get gas back after a shutoff?
It depends on what's found. Leaks must be repaired, the system pressure-tested and inspected, and then the utility restores service. In apartment buildings this can take considerably longer than in a house.
Does my house need a Local Law 152 inspection?
No, if it's a one- or two-family home. The law covers other buildings with gas piping in NYC.
Can I connect a gas range myself?
No. Gas connections are licensed work in NYC and throughout the region.
11Gas Line Work by area
We take calls about gas line work across the region. Choose your area for local building and permit details.
New York City
Long Island & Hudson Valley
New Jersey
12Related
Sounds like your situation?
Sources & review
Last reviewed . General information, not legal or engineering advice. Rules change and individual buildings differ.