Faucet Installation Cost: DIY vs Plumber
Updated February 25, 2026
A faucet swap is one of the most common plumbing service calls -- and one of the easiest DIY projects. The faucet itself costs $50-$500 depending on the model. Professional installation adds $150-$300 in labor. DIY installation costs $0 beyond the faucet. The difference between DIY and pro comes down to whether you own a basin wrench and are willing to spend 30-75 minutes under the sink. Here is the full cost breakdown for both approaches.
Overview
A faucet swap is one of the most common plumbing service calls -- and one of the easiest DIY projects. The faucet itself costs $50-$500 depending on the model. Professional installation adds $150-$300 in labor. DIY installation costs $0 beyond the faucet. The difference between DIY and pro comes down to whether you own a basin wrench and are willing to spend 30-75 minutes under the sink. Here is the full cost breakdown for both approaches.
Cost Breakdown
Kitchen Faucet Installation Cost
Faucet: $100-$500 for quality models (Moen, Delta, Kohler). Plumber labor: $150-$300 for a standard swap (disconnect old, install new, same sink holes). Parts included in most quotes: supply lines ($5-$10 each if not pre-attached). Disposal of old faucet: usually free (plumber takes it). Total professional: $250-$800 depending on faucet choice. DIY total: $100-$500 (faucet only, plus $12-$20 for a basin wrench if you do not own one).
Bathroom Faucet Installation Cost
Faucet: $50-$350 for quality models. Plumber labor: $100-$250 (slightly less than kitchen because bathroom faucets are simpler). Drain pop-up connection: included in the labor quote for most plumbers. Total professional: $150-$600. DIY total: $50-$350. Bathroom faucets are easier to install than kitchen faucets because the supply lines are shorter and there is usually more space under a vanity than under a kitchen sink.
What Adds to the Cost
- Old shut-off valves that need replacement: $50-$150 per valve (plumber) or $15-$30 each DIY.
- These corrode over time and may not close properly.
- Replacing during faucet installation is smart preventive maintenance.
- Countertop modification: switching from a 3-hole centerset to a single-hole faucet (or vice versa) may require filling holes with a deck plate ($10-$20) or drilling new holes ($50-$100 if done by a countertop specialist).
- Old galvanized supply lines: require adapter fittings or pipe work to connect to modern braided supply lines ($30-$80 additional).
- Garbage disposal reconnection: if you disconnect the disposal to access the faucet, reconnecting adds 15 minutes and $0 if the plumber does it alongside the faucet.
DIY vs Pro: When Each Makes Sense
DIY makes sense when: the shut-off valves work, the sink holes match the new faucet, you have a basin wrench, and you have 30-75 minutes. Saves $150-$300. Hire a plumber when: the shut-off valves are seized (need replacement), you are changing the faucet configuration (different number of holes), the supply lines are old galvanized that need adaptation, or you simply do not want to lie on your back in a cramped cabinet for an hour.
Safety Warnings
- Not replacing old shut-off valves when the faucet is off and access is easy. A seized valve discovered during an emergency is a $200 service call vs $50-$100 done alongside the faucet.
Pro Tips
- Buy the faucet yourself -- you get a wider selection and pay retail instead of the plumber's 10-20% markup. Most plumbers happily install customer-supplied faucets.
- If you are paying a plumber for a faucet install, ask them to replace the shut-off valves ($50-$100 extra) and supply lines ($10-$20 extra) at the same time. The incremental cost is minimal compared to a separate service call.
- A basin wrench ($12-$20) is the only specialty tool you need for DIY. It pays for itself on the first install and you will use it every time you work on a faucet.
- Get the quote in writing before the plumber starts. Specify: faucet installation, supply line connection, drain pop-up connection, and disposal of old faucet. Extras should be listed separately.
Mistakes to Avoid
- Paying $300+ in labor to install a $100 faucet. At that point, the labor costs more than the faucet. Either buy a better faucet or install it yourself.
- Not replacing old shut-off valves when the faucet is off and access is easy. A seized valve discovered during an emergency is a $200 service call vs $50-$100 done alongside the faucet.
- Hiring a handyman instead of a plumber for a faucet that requires valve replacement or supply line modification. Valve work is plumbing, not handyman territory.
- Forgetting to buy matching supply lines if the faucet does not come with them pre-attached. Running to the store mid-install adds an hour to the project.
Bottom Line
Kitchen faucet: $250-$800 with a plumber, $100-$500 DIY. Bathroom faucet: $150-$600 with a plumber, $50-$350 DIY. The $150-$300 labor premium buys convenience and a warranty on the work. DIY saves that premium and takes 30-75 minutes with a $12 basin wrench. Most homeowners who try one DIY faucet install never pay a plumber for one again.
Frequently Asked Questions
What are expert tips for faucet installation cost: diy vs plumber?
Buy the faucet yourself -- you get a wider selection and pay retail instead of the plumber's 10-20% markup. Most plumbers happily install customer-supplied faucets. If you are paying a plumber for a faucet install, ask them to replace the shut-off valves ($50-$100 extra) and supply lines ($10-$20 extra) at the same time. The incremental cost is minimal compared to a separate service call. A basin wrench ($12-$20) is the only specialty tool you need for DIY. It pays for itself on the first install and you will use it every time you work on a faucet. Get the quote in writing before the plumber starts. Specify: faucet installation, supply line connection, drain pop-up connection, and disposal of old faucet. Extras should be listed separately.
What mistakes should I avoid with faucet installation cost: diy vs plumber?
Paying $300+ in labor to install a $100 faucet. At that point, the labor costs more than the faucet. Either buy a better faucet or install it yourself. Not replacing old shut-off valves when the faucet is off and access is easy. A seized valve discovered during an emergency is a $200 service call vs $50-$100 done alongside the faucet. Hiring a handyman instead of a plumber for a faucet that requires valve replacement or supply line modification. Valve work is plumbing, not handyman territory. Forgetting to buy matching supply lines if the faucet does not come with them pre-attached. Running to the store mid-install adds an hour to the project.
What is the bottom line on faucet installation cost: diy vs plumber?
Kitchen faucet: $250-$800 with a plumber, $100-$500 DIY. Bathroom faucet: $150-$600 with a plumber, $50-$350 DIY. The $150-$300 labor premium buys convenience and a warranty on the work. DIY saves that premium and takes 30-75 minutes with a $12 basin wrench. Most homeowners who try one DIY faucet install never pay a plumber for one again.
What's the bottom line on faucet installation cost: diy vs plumber?
Kitchen faucet: $250-$800 with a plumber, $100-$500 DIY. Bathroom faucet: $150-$600 with a plumber, $50-$350 DIY. The $150-$300 labor premium buys convenience and a warranty on the work. DIY saves that premium and takes 30-75 minutes with a $12 basin wrench. Most homeowners who try one DIY faucet install never pay a plumber for one again.
How much does faucet installation cost: diy vs plumber cost?
The typical cost range is $50-$800 depending on faucet choice and DIY vs professional. Actual costs depend on your location, materials, and whether you hire a professional.