How much does it cost to replace a main water shut-off valve?

Author: Mr. Avery Shanahan DVM  |  Last update: Thursday, April 17, 2025

The average cost to replace a main water shut-off valve is $500, but most homeowners pay between $375 and $600 depending on the valve type, material, and whether trenching is involved. The cost can reach as high as $800 for stainless steel valves that require a trench.

Who is responsible for replacing the main water shut-off valve?

The water valve Inside your house is your property. No one can sue you for turning that one off. The valve in the street or meter pit for your house belongs to the water utility. You could have to pay for the repairs if you damaged it.

How much does a plumber charge to change a valve?

The average cost to replace a main water shut-off valve is $250 to $600, with most homeowners spending around $425 for the materials and labor.

How to replace your main water shut-off valve?

Replace Your Main Water Shut-Off Valve
  1. Get a replacement valve. Head over to your local hardware store and grab a replacement valve. ...
  2. Detach the water supply lines. ...
  3. Remove the old water shut-off valve. ...
  4. Prepare the pipe for the new water shut-off valve. ...
  5. Install the new water shut-off valve.

What is the life expectancy of a water main valve?

The good news is that they can last for 20 to 25 years. The bad news is that if they are not used and exercised every two years (at least), they may freeze in the open position and need replacement. While true, you cannot ignore the importance of shut-off valves to your home's plumbing system.

How Much Does It Cost To Replace A Main Water Line?

How much does it cost to replace a main water line shut-off valve?

The average cost to replace a main water shut-off valve is $500, but most homeowners pay between $375 and $600 depending on the valve type, material, and whether trenching is involved. The cost can reach as high as $800 for stainless steel valves that require a trench.

How to tell if a water shut-off valve is bad?

Signs of a Bad Water Shut-Off Valve
  1. Leaking: The most obvious sign of a bad water shut-off valve is if it's leaking. ...
  2. Difficulty Turning On or Off: A properly functioning water shut-off valve should be easy to turn on and off. ...
  3. Corrosion: Over time, water shut-off valves can become corroded due to exposure to moisture.

How long does it take to replace a main water valve?

How long does it take to replace a main shut off valve? The time required for replacing a main shut off valve varies based on factors like accessibility, complexity of the job, and any unforeseen issues. On average, it can take anywhere from 1 to 3 hours.

What is the main water shut-off valve called?

There are two main types of water shut-off valves: gate valves and ball valves. Gate valves are more commonplace in older homes (built before the 1970s), and ball valves are standard in newer homes. In warmer climates, the main shut-off valve is often located outside the house or in an underground box.

What to do if water shut-off valve is broken?

If you believe that your main water valve is broken, it's important to call a professional plumber right away. A broken water valve may get worse over time as pressure continues to push on weak points.

How much should a valve replacement cost?

Hospital and Surgeon Fees

According to a study published in the Journal of the American Medical Association, the average hospital charges for heart valve replacement range from $50,000 to $200,000.

How much does it cost to replace a main water pressure valve?

For a standard PRV replacement, expect to pay around $400 to $800. This includes the new valve, plumber fees, permit charges, and any additional materials or labor.

Who owns the water shut-off valve?

There should be a valve on each side of the water meter. Either valve will shut off the water to your home if they are operable. Care and maintenance of these valves is the responsibilty of the homeowner.

What is the difference between a main valve and a shut-off valve?

A main water valve stops the flow of water from the water meter to the entire house. Other water valve types shut off the water at individual appliances, fixtures and faucets. This guide reviews the types of water shut-off valves, how they are used and where to find them inside and outside your home.

Can you replace a shut-off valve without turning off water?

Turn off the water to the faucet at the main shut off valve. Turn on a faucet in a nearby sink or tub to release pressure from pipes. Remove the handle by unscrewing it counterclockwise using an adjustable wrench.

What is the best shut-off valve for main water line?

Ball valves may be the most reliable valve and are commonly used for main water shut offs. Similar to gate valves, ball valves should be all the way open to allow the full flow of water or all the way closed to restrict all water from flowing.

How much does a plumber charge to replace a water shut-off valve?

The last thing that affects shut-off valve replacement costs is where you want to install the new valve and how easy it will be to reach there. The average cost to replace a water shut-off valve is between $375 and $600.

Can a main water shut-off valve fail?

Valves are often made from copper and brass, which are soft metals, so they are prone to breaks like that described here. A leak can develop, but even worse, you can't cut off or reopen the water supply if needed.

How long should a main water line last?

Q: How long does a main water line usually last before it needs replacing? Copper lines can last over 50 years, while polyvinyl chloride (PVC) pipes may have a shorter lifespan. Environmental factors and maintenance quality play significant roles.

Is water company responsible for shut-off valve?

The homeowner is responsible for the water service line from the stop box all the way into the home, this will include the valve before the meter as well as the plumbing the meter in connected to. The home owner is also responsible for all plumbing after the water meter.

Why is my water still running after main shut off?

There may be a hidden plumbing leak in the walls of your home, or maybe your toilet is running when it's not in use. These “hidden” leaks can cause your home to be using water even when your main water valve is turned off.

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