How much does it cost to replace a main water shut-off valve?
How much does it cost to replace a main water shut-off valve?
$250 – $600 average replacement cost
Average cost to replace main water main shut-off 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. Water main shut-off valve replacement cost depends on the valve type, material, and location, with prices often in the thousands if the valve is buried or difficult to access.
| National Average Cost | $425 |
| Minimum Cost | $200 |
| Maximum Cost | $3,000 |
| Average Range | $250 to $600 |
The main water shut-off valve completely stops the water flow coming into your home from the city's main line or your well pump. This valve can prevent major damage during a plumbing emergency.
Shut-off valves may need replacing due to age or during other repairs that involve changing the pipe size or a material that is not compatible.
Most homes have two main water shut-off valves: one located inside the house, usually near the perimeter wall facing the street, and another near where the property line meets the street or municipal water supply.
Main water shut-off valve replacement cost factors
Every home's plumbing system is unique, which means the cost to replace the main water shut-off valve can vary significantly. Several factors influence the overall cost, with location typically having the biggest impact.
Valve location
The location of your main water shut-off valve significantly impacts the replacement cost. Easily accessible valves in basements or near water meters are relatively quick and inexpensive to replace, often costing $350 or less. Valves buried deep underground or housed in vaults may cost $1,000 or more due to the extra labor and equipment required.
Valve type
Most main water shut-off valves range from $10 to $50 on average, though some heavy-duty models cost $150 or more. The main shut-off valve in residential homes across the U.S. is typically one of two types:
Ball valve: Found in most newer homes, a ball valve usually has a flat handle. When you move the handle 90 degrees, a ball inside the valve spins to let water through or block it. Homes with plastic or copper main water pipes often use this valve.
Gate valve: Common in older homes, a gate valve has a round wheel handle. Turning the wheel raises or lowers a metal gate inside the valve to control the water flow.
Some insurance companies offer premium discounts to homeowners who install smart or automatic water shut-off valves designed to monitor usage, detect leaks, and minimize potential water damage. These high-tech valves range from $150 to $500+ before installation.
Valve material
Main water line shut-off valves are typically brass, which is durable and cost effective. Other material options include bronze and stainless steel, but these valves typically come with a higher price tag.
| Valve material | Average price | Description |
|---|---|---|
| Brass | $10 – $50 | Durable and budget-friendly |
| Bronze | $25 – $200 | Stronger than brass and corrosion-resistant |
| Stainless steel | $20 – $500 | Ideal for extreme pressure or temperature fluctuations |
Labor rates
Most plumbers charge $75 to $150 per hour for scheduled valve replacements during normal business hours. The amount of time it takes for the plumber to replace the valve can range anywhere from 30 minutes to several hours or days, depending on how easy it is to access and if the issue involves other repairs.
Hourly rates for emergency plumbing service range from $120 to $450+ per hour, with the highest prices typically on weekends and holidays. Still, the extra cost now could save you thousands if you're fixing a problem that could otherwise lead to major water damage.
While it may be tempting to replace the valve yourself to save some money, the main shut-off valve is a crucial component of your home's water supply. Hiring a licensed plumber ensures the job is done safely, correctly, and may include a warranty on materials and workmanship.
Additional costs
Beyond the valve location, type, and local labor rates, other potential costs include:
Municipal fees: Plumbing permits cost $30 to $500, and many cities require one to replace the main water shut-off valve. Some areas also charge an extra fee if the plumber needs to shut off the city's main line to complete the repair.
Trenching: If the valve is buried, trenching costs $5 to $12 per linear foot or $500 to $1,200 to dig a 100' trench, depending on the depth, soil type, and any obstructions.
Additional repairs:
The average cost to repair the main water line of your home is $400 to $1,500, but the cost varies depending on the pipe material, location, and the extent of the damage.
If it's beyond repair, replacing the main water line costs about $2,000 to $5,000.
Replacing the water pressure regulator costs $300 to $650 for the materials and labor.
FAQs
Who is responsible for replacing the main water shut-off valve?
In most cases, the homeowner is responsible for replacing the main water shut-off valve, as they own and maintain the water service line from the property line to their home.
Does homeowners insurance cover main water line shut-off valve replacement?
Some homeowners insurance policies may cover a portion of the cost for replacing the main water shut-off valve. Many providers exclude the home's main water service line from their standard policies and offer it as add-on coverage.
How long does it take to replace a main water shut-off valve?
Replacing a main water line shut-off valve typically takes 1 to 2 hours or less when the valve is easy to reach. However, if the valve is behind cabinetry or buried, it can take several hours or even multiple days to complete the job.
How long do main water shut-off valves last?
Main water shut-off valves last 10 to 20 years on average, depending on the material and quality. However, factors like corrosion, sediment buildup, and aging internal parts can cause them to fail sooner. If you see corrosion or water leaking around the valve, it's probably due for replacement.
What type of valve is best for water shut-off?
Ball valves are widely considered the most reliable and preferred option for main water shut-off valves due to their simple quarter-turn operation and durability.
Getting estimates for main water line shut-off valve replacement
Follow these guidelines when searching for a plumber near you to replace the main water shut-off valve:
Compare 3 to 5 detailed estimates from local plumbing contractors.
Choose a plumbing company that is licensed and insured, with a several-year track record of quality local service.
Read their customer reviews on HomeGuide and Google.
Avoid plumbers who give extremely low estimates, as they may indicate a lack of experience or poor quality.
Get a detailed contract and warranty in hand before the plumber starts working.
Don't pay in full until they complete the replacement, turn the water back on, and test the new valve.
Questions to ask a plumber
Ask the following questions to help you select the best plumber for water shut-off valve replacement:
Are you licensed, insured, and bonded?
What type of shut-off valve do you recommend, and why?
Can you provide a list of references I can contact?
How soon can you replace the valve?
Does this job require a permit, and do you handle that process?
What exactly does the estimate include?
Are there any additional costs I should be aware of?
Do you offer a warranty or guarantee on the parts and labor?
Using our proprietary cost database, in-depth research, and collaboration with industry experts, we deliver accurate, up-to-date pricing and insights you can trust, every time.