Sink valve replacement typically costs $150-$350 per valve, with an average near $240 for a standard accessible shutoff under a bathroom or kitchen sink. The final price depends on valve type, pipe condition, labor minimums, and whether the plumber replaces one valve or a pair.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| One sink shutoff valve | $100 | $240 | $500 | Installed; standard access |
| Valve and supply line | $130 | $290 | $600 | Per valve assembly |
| Pair of valves | $180 | $400 | $800 | Hot and cold lines |
| Valve part only | $8 | $25 | $70 | Material price per valve |
What a plumber charges for one sink valve
A plumber generally charges $150-$350 to replace one standard angle-stop valve, including the part and routine labor. A straightforward job may cost $100-$200 when the valve is easy to reach and the appointment has no minimum charge. Difficult access, corroded piping, or an urgent call can push the total to $350-$500 or more.
For a typical accessible sink, budget about $240 per valve or $300-$450 for a hot-and-cold pair. These estimates assume a standard compression or threaded valve, no wall opening, and ordinary weekday service. Assumptions: U.S. average labor rates, standard brass or chrome-plated valves, normal access.
How valve parts, labor, and service fees add up
The valve itself is usually a small part of the bill; dispatch, diagnosis, and the plumber’s minimum labor charge often determine the total. Plumbers may charge a flat job price or bill by the hour, with a minimum covering the trip and initial work.
| Quote component | Typical price | What it covers |
|---|---|---|
| Shutoff valve | $8-$70 each | Basic to higher-grade valve |
| Supply line | $10-$35 each | Optional replacement hose |
| Labor | $75-$150 per hour | Usually 1-2 hours billed |
| Service or trip fee | $50-$125 | Visit, assessment, or minimum |
| Pipe repair or fitting | $20-$150 | Small added repair, before labor |
A quote should make clear whether the service fee is included in labor or added separately. If a plumber bills one hour at $110 and charges a $75 trip fee, the total can reach $185 before parts or tax.
When pipe size and corrosion raise the replacement price
Most sink stops connect to a 3/8-inch supply line and a 1/2-inch household water pipe, but older homes may have different fittings or deteriorated copper, galvanized, or plastic pipe. A compatible replacement is usually routine; an unusual connection can require adapters or more time.
Expect added labor when a valve is seized, leaks at the wall, or cannot be removed without altering the pipe. Replacing a valve on an exposed stub-out may take 30-60 minutes, while cutting and rebuilding a damaged connection can take 2-4 hours and add roughly $100-$400. If a cabinet opening is tight or a wall must be opened, repair and finish work can increase the bill further.
How long the under-sink valve job takes
A simple replacement usually takes 30-60 minutes per valve after water is shut off and the old part is removed. Replacing both hot and cold valves during one visit may take 1-2 hours, since setup and travel charges are shared. A plumber may still charge a one-hour minimum even when hands-on work is shorter.
Ask whether the estimate includes shutting off and restoring the home’s water supply, testing for leaks, and replacing supply hoses. If a building shutoff is inaccessible or inoperable, coordinating access or repairing that shutoff may add time and expense.
Why valve replacement quotes differ by U.S. location
Labor rates and service minimums vary by market. In lower-cost rural areas and smaller cities, a standard one-valve visit may run around $100-$250. In many mid-cost metro areas, expect $150-$350; dense, high-cost urban markets can be 20%-50% above that range, especially for a short-notice appointment.
Compare local written estimates using the same scope, not just the hourly rate. An estimate with a higher dispatch fee may still cost less if it includes the valve, supply line, and testing. Weekend or emergency appointments commonly add $75-$250 or more.
When a supply hose or damaged stub-out adds work
Replacing an aging braided supply hose at the same time typically adds $25-$80 per connection, including a modest labor allowance. If the shutoff is stuck and the faucet hose is brittle, replacing both parts can prevent a second service visit. The plumber should confirm the hose length and connection type before installing it.
Pipe damage is the main reason a modest valve job becomes a larger plumbing repair. A short exposed copper-pipe repair may add $100-$300, while concealed leaks or wall access can cost substantially more. Get approval before any expanded work begins.
Repairing a leaky valve versus replacing it
A loose packing nut or minor handle leak may be repairable for $75-$200, depending on the service minimum and valve condition. Replacing internal washers is not practical for many modern shutoff valves, and a valve that no longer closes fully often needs replacement. A new standard valve part costs roughly $8-$35, though labor is usually the larger expense.
Replacement is often the more predictable option when the valve is corroded, seized, or leaking from its body. A plumber can assess whether a small adjustment is safe, but forcing an old valve may cause a leak or break the pipe.
How to lower the sink valve replacement bill
Replacing both sink valves in one appointment can reduce the per-valve cost by sharing the trip charge and setup time. Clear the cabinet, remove stored items, and identify the home’s main water shutoff before the appointment; do not force a stuck valve or attempt a repair that could flood the cabinet.
Request two itemized quotes and compare the valve, supply hoses, labor, trip fee, and after-hours surcharge. Choose a standard quarter-turn valve unless a specific material or configuration is needed, and avoid paying for hose replacement when the existing lines are sound and compatible. A weekday appointment is generally less expensive than emergency service.