DIY Plumbing & Gas Work: Permits & Limits
Fixing a faucet is one thing. Moving a gas line is another. Water leaks damage homes. A bad gas connection can cause explosions, fires and carbon monoxide poisoning. Know your limits and local rules.
- Homeowners
- DIY
- Landlords
Rules vary
States, counties and cities regulate plumbing and gas work, based on model codes such as the International Plumbing Code, Uniform Plumbing Code and National Fuel Gas Code. Some areas let owners do plumbing in their own homes with a permit. Many areas restrict gas work to licensed professionals. Call your local building department first.
Plumbing jobs homeowners often can do
- Replacing a faucet, showerhead, toilet parts or a garbage disposal
- Repairing a visible leak at a fixture or fixing a running toilet
- Clearing a clog with a plunger or a hand snake
- Replacing a supply hose, with the water shut off at the stop valve
Work that changes pipes inside walls, adds fixtures, moves drains, or connects to the water main or sewer usually needs a permit and inspection. Water heater replacements usually do too. See Water Heaters.
Gas: be extra careful
- Natural gas and propane leaks can ignite, and combustion gases can produce carbon monoxide. See Gas Leaks and Smoke & CO Alarms.
- Gas piping, regulators, valves and appliance connections must use the right materials, joint compounds and tests.
- New or altered gas lines require a pressure test and inspection in most places.
- Propane systems have extra rules for tanks and regulators. See Home Propane Tanks.
- In many areas, even replacing a gas appliance or connector must be done by a licensed gas fitter or contractor. See Gas Fitters.
Safe practice if you do plumbing
- Shut off the water at the fixture stop or the main, and open a tap to relieve pressure
- Use the right materials and fittings for the pipe type and code
- Do not mix incompatible metals without proper fittings. Keep drinking water lines lead-free
- Test for leaks before closing walls
- Know your main shutoff location. See Shutting Off Utilities
- Do not use open flame near gas lines or fumes; use proper torch safety
See also Hiring Contractors and DIY Project Safety.
Standards & references
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