Bathroom Sink Installation Cost: 2025 Complete Price Guide

Installing a bathroom sink costs $200 to $1,800 on average, with most homeowners spending $300 to $700 for a standard drop-in or undermount sink including labor. The wide range comes down to the type of sink you choose, whether it’s a replacement or new installation, faucet selection, and your local plumber’s rates. This guide breaks down every cost factor so you know exactly what to budget before you call a plumber.

Bathroom Sink Installation Cost Overview

The table below shows installed costs — sink, basic faucet, drain assembly, supply lines, and labor — for each common sink type.

Note: Costs above assume existing, accessible supply lines and drain rough-in. New installations adding plumbing run-ins add $200–$800 or more.

Bathroom Sink Installation Cost Breakdown

Understanding where the money goes helps you compare quotes intelligently and identify where you can save without cutting corners.

Sink Unit (Materials)

The sink itself accounts for $50 to $800+ of your total project cost. An entry-level drop-in ceramic sink runs $50–$150. A quality undermount porcelain sink is $100–$350. Vessel sinks range from $80 for basic tempered glass models up to $600+ for hand-painted ceramic or stone. Farmhouse fireclay sinks are the most expensive fixture at $300–$1,200 for the sink alone before any installation work begins.

Faucet

A basic single-handle bathroom faucet costs $40–$150. Mid-range widespread or waterfall faucets run $150–$400. High-end designer faucets can reach $500–$1,200. Most plumbers charge $75–$150 additional labor to install a faucet at the same time as the sink. Installing it separately later costs $100–$250 in labor alone, so bundling is almost always the smarter financial choice.

Drain Assembly and P-Trap

A standard pop-up drain assembly costs $15–$45 in parts. The P-trap (the curved pipe under the sink that holds water to block sewer gases) costs $8–$25 for PVC or $20–$60 for chrome brass. If the existing P-trap is corroded or the wrong size for the new sink, your plumber will replace it — expect $30–$100 in parts and labor for this line item.

Supply Lines

Braided stainless steel supply lines (the flexible hoses connecting shut-off valves to the faucet) cost $8–$25 per pair. These are almost always replaced during a sink swap since old supply lines are a common source of future leaks. If your shut-off valves are old, corroded, or the wrong size, valve replacement adds $60–$150 per valve including labor.

Plumber Labor

Labor is typically the largest single line item. Plumbers charge $75–$200 per hour depending on your region. A straightforward sink replacement takes 1–2 hours, putting pure labor at $100–$400. A new installation requiring any pipe modification runs 2–4 hours or more. Always ask whether you’re quoted a flat rate for the job or an hourly rate — flat rates protect you if complications arise.

Cost by Sink Type

Drop-In Sink Installation Cost: $150–$500

Drop-in (self-rimming) sinks are the most common and least expensive to install. The rim rests on top of the countertop, making them compatible with virtually any surface material. Installation is straightforward — cut an opening, lower the sink in, clip it from below, seal the rim, and hook up the drain and supply lines. A plumber can complete a drop-in swap in under 90 minutes in most cases.

Pros: Easiest to install and replace, widest selection, lowest labor cost, compatible with all countertop materials.

Cons: Rim creates a cleaning ledge where grime accumulates, slightly less sleek appearance than undermount.

Price drivers: Countertop material (tile requires a tile saw for cutouts), vanity depth, and whether the drain lines up with existing rough-in.

Undermount Sink Installation Cost: $200–$600

Undermount sinks mount below the countertop, creating a seamless surface that’s easier to wipe clean. Installation requires adhesive mounting, clamp installation from below, and silicone caulk sealing — which adds 30–60 minutes of labor compared to drop-in. Undermount sinks require a solid surface countertop (stone, quartz, or solid surface) since laminate cannot support the weight and exposed edge.

Pros: Clean, modern look; easy countertop cleanup; preferred by most designers.

Cons: Requires stone or solid surface countertop, more labor-intensive installation, harder to replace without disturbing the countertop.

Price drivers: Whether countertop needs to be cut or replaced, countertop material compatibility, adhesive cure time.

Pedestal Sink Installation Cost: $200–$700

Pedestal sinks consist of a bowl mounted on a floor-standing column. They’re popular in smaller bathrooms because they take up less floor space and have a classic look. Installation involves securing the sink basin to the wall with lag bolts, positioning the pedestal (which hides the drain and supply lines), and making all connections. The critical factor is wall stud location — the sink must anchor into studs or a backing board, not just drywall. If backing needs to be added to the wall, expect an additional $150–$350 in labor and materials.

Pros: Space-saving, elegant aesthetic, no countertop required, easy access to plumbing.

Cons: No under-sink storage, requires precise wall anchoring, pipes may be visible if pedestal doesn’t align perfectly.

Price drivers: Wall stud location, whether backing board is needed, finish of supply lines (chrome lines visible on pedestal sinks).

Wall-Mounted Sink Installation Cost: $350–$1,000

Wall-mounted sinks are supported entirely by the wall with no floor contact, creating a floating appearance that makes bathrooms feel more open and is ADA-accessible. This is the most labor-intensive installation type because it requires a structural backing system (typically a concealed carrier or a reinforced backing board) inside the wall to support 50–150 lbs of weight plus user pressure. If the wall lacks existing backing, drywall must be opened, backing installed, and the wall repaired before the sink goes in.

Pros: Accessible height adjustment, open floor space for cleaning, modern aesthetic, ADA compliant.

Cons: Highest labor cost, requires wall opening if no backing exists, all plumbing connections are visible, no countertop or cabinet storage.

Price drivers: Wall backing installation, drywall repair and repainting, ADA-compliant height positioning, exposed chrome supply and drain lines.

Vessel Sink Installation Cost: $250–$900

Vessel sinks sit on top of the countertop or vanity rather than inside it, creating a striking focal point. Installation requires a drain hole in the countertop (no overflow drain on most vessel sinks), a vessel-specific tall faucet, and a drain tailpiece that extends through the countertop. The faucet must be sized appropriately — standard faucets are often too short, and a vessel faucet adds $100–$400 to the fixture budget.

Pros: Bold design statement, easy countertop installation, wide variety of materials (glass, stone, ceramic, copper).

Cons: Requires tall vessel faucet (additional cost), no overflow (faster to overflow if left running), some users find the height awkward, drain cleaning is slightly more involved.

Price drivers: Countertop material for drain hole cutting, vessel-specific faucet cost, drain assembly type.

Double Vanity Sink Installation Cost: $400–$1,200

Double vanity setups involve two sinks in a shared cabinet, each requiring its own faucet, drain, P-trap, and supply line connections. Labor runs 1.5–3x that of a single sink installation. If the existing rough-in only serves one sink location, the plumber must add a second drain and supply connection — which moves this into new-installation territory and adds $300–$800 to the project.

Pros: Eliminates morning bathroom congestion, adds resale value, ideal for master bathrooms.

Cons: Significantly higher installation cost when adding second drain, larger vanity cabinet cost, more hardware to maintain.

Price drivers: Whether second drain rough-in exists, distance between drains and main stack, vanity cabinet size and material.

Farmhouse / Apron-Front Sink Installation Cost: $500–$1,800

Farmhouse sinks are traditionally associated with kitchens but have become popular in large master bathrooms. The apron-front design means the cabinet or vanity must be specifically built or modified to accommodate the sink’s exposed front face. Standard vanity cabinets are not compatible — either a custom vanity is required ($400–$2,000+) or an existing cabinet must be modified by a carpenter. Fireclay farmhouse sinks weigh 100–200 lbs, requiring reinforced cabinet support. This is the highest-complexity bathroom sink installation.

Pros: Statement piece aesthetic, deep basin, durable fireclay or cast iron material, unique in a bathroom setting.

Cons: Highest installation cost, requires compatible or custom cabinetry, heavy weight demands structural support, limited bathroom vanity options.

Price drivers: Cabinet modification or custom cabinetry, fireclay vs. acrylic material, sink weight and structural support, countertop material compatibility.

New Installation vs. Replacement Cost

The single biggest cost variable in bathroom sink installation is whether you’re replacing an existing sink (existing plumbing in place) or installing in a new location that requires plumbing rough-in.

Sink Replacement Cost

Replacing an existing sink with a new one of the same type is the least expensive scenario. The drain rough-in, P-trap, supply lines, and shut-off valves are already in place. A plumber disconnects the old sink, installs the new one, and reconnects everything. Total time: 1–2 hours. Labor only: $100–$300. With a mid-range sink and faucet included: $300–$700 total.

New Installation with Rough-In Plumbing

Installing a sink in a new location — or converting a half bath to a full bath — requires running new supply lines (hot and cold) and a new drain line to tie into the existing drain/vent stack. This is a significantly larger project:

• Supply line rough-in: $200–$500 depending on distance from main lines
• Drain rough-in: $300–$800 depending on distance to stack and whether venting is required
• Wall and floor opening/repair: $150–$500 in drywall, tile, or subfloor work
• Total new installation (plumbing only): $500–$1,500 before the sink itself

Permit Costs

Most jurisdictions require a plumbing permit for new rough-in work. Permit fees typically run $50–$200 for a residential plumbing permit. Simple sink replacements on existing rough-in generally do not require a permit in most areas, but adding new drain or supply lines almost always does. Your licensed plumber should pull the permit — if a contractor tells you they’ll skip the permit to save money, that’s a red flag. Unpermitted plumbing work can create problems at resale and void homeowner’s insurance claims for water damage.

Faucet Installation Cost as Part of Sink Install

Faucet selection has a significant impact on total project cost. Installing the faucet at the same time as the sink saves $75–$150 in labor compared to separate installations, so it almost always makes sense to bundle them.

Single-Handle Faucet

The most common and affordable option. A single lever controls both hot and cold flow. Faucet cost: $40–$200. Installation labor when bundled with sink: $50–$100 additional.

Double-Handle (Center-Set) Faucet

Two separate handles on a shared base, fitting standard 4-inch sink hole spacing. Faucet cost: $60–$300. Similar installation labor to single-handle at $50–$100 additional when bundled.

Widespread Faucet

Three separate pieces (two handles plus spout) installed in individual holes, requiring an 8-inch spread sink or countertop. More labor-intensive to install. Faucet cost: $100–$500. Additional labor: $75–$150 when bundled with sink installation.

Waterfall Faucet

Waterfall faucets have a wide, flat spout that creates a sheet-like water flow. They’re often paired with vessel sinks. Most require a single-hole installation. Faucet cost: $80–$400. Installation is similar complexity to single-handle. Make sure the faucet height clears the vessel sink basin — measure carefully before purchasing.

Wall-Mount Faucet

Wall-mounted faucets install through the wall above the sink rather than through the sink or countertop. They require plumbing to be roughed in through the wall at the correct height. This adds $200–$500 in rough-in labor if plumbing doesn’t already exist in the wall. Faucet cost: $150–$800+.

DIY vs. Professional Bathroom Sink Installation

What a Sink Installation Actually Involves

A bathroom sink swap looks simple but involves more steps than most homeowners anticipate:

1. Shutting off water supply valves (or house main if valves fail)
2. Disconnecting and removing old faucet, drain assembly, P-trap, and supply lines
3. Removing the old sink from vanity or wall
4. Preparing the countertop or wall for the new sink (cutting, sanding, applying silicone)
5. Installing the new faucet into the sink before setting the sink
6. Setting and securing the new sink
7. Installing new drain assembly and pop-up stopper mechanism
8. Connecting new P-trap to drain rough-in
9. Installing new supply lines from shut-off valves to faucet
10. Turning water on slowly and checking every connection for leaks
11. Testing the pop-up drain and faucet operation

When DIY Makes Sense

A handy homeowner who has shut off a water supply before, worked in tight vanity cabinet spaces, and understands basic pipe fittings can realistically replace a drop-in or undermount sink as a same-type swap. The primary risks are overtightening plastic nuts (cracking drain bodies), cross-threading supply line connections (causing leaks inside the cabinet that go unnoticed), and not properly sealing the drain flange (causing slow drips onto the cabinet floor). Budget 2–4 hours for a first-time DIY sink swap.

When to Hire a Licensed Plumber

Professional installation is strongly recommended for:

• Wall-mounted sinks (structural backing, precise height, hidden plumbing)
• Any installation requiring new drain or supply rough-in
• Pedestal sinks where supply lines must align with the pedestal
• Farmhouse sinks requiring cabinet modification and heavy lifting
• Older homes with galvanized steel pipes that may need replacement
• Situations where shut-off valves are corroded or missing
• Any time a permit is required

A botched DIY sink installation can result in a slow leak that causes mold, structural damage, and thousands in water damage remediation — far exceeding the $150–$300 you saved on labor. For peace of mind and a guaranteed leak-free result, hiring a licensed plumber is the right call for most homeowners.

Factors That Affect Bathroom Sink Installation Cost

Sink Style and Mounting Type

As detailed above, installation complexity varies significantly by mounting type. Drop-in is the simplest and cheapest to install. Wall-mounted requires the most labor. The style you choose sets the floor on your total project cost.

Existing Plumbing Condition

Older homes built before 1970 often have galvanized steel supply lines that are corroded internally, reducing flow and prone to failure. A plumber who discovers this during a sink replacement may recommend replacing the supply lines to the shutoff valve — adding $150–$400 to the project. Similarly, old brass drain fittings may seize or crack when disturbed, requiring partial drain line replacement. These aren’t upsells — they’re legitimate infrastructure needs that surface when work begins.

Countertop Material

For undermount sinks, the countertop must be cut to size. Cutting and polishing a stone countertop (granite, marble, quartz) requires a diamond blade saw and specialized skills — this is typically done by a countertop fabricator, not a plumber, adding $150–$400 to countertop work. If a countertop is being replaced at the same time as the sink (common in bathroom remodels), coordinate the countertop fabrication timeline with your plumber’s schedule.

Faucet Selection

As covered above, faucet cost ranges from $40 to $1,200+. Widespread and wall-mount faucets add labor over single-hole options. Choosing a quality faucet from brands like Moen, Delta, or Kohler typically adds $20–$30 in installation time for quality checks but significantly reduces future maintenance calls. Cheap no-name faucets often fail within 1–3 years, costing more in the long run.

Geographic Location

Plumber labor rates vary considerably by region. In major metro areas (New York, San Francisco, Boston, Seattle), plumbers charge $150–$250 per hour. In mid-sized cities and suburban markets, rates run $100–$150/hour. In rural areas and lower cost-of-living regions, $75–$110/hour is typical. This means the same 1.5-hour sink installation can cost $112 in rural Ohio or $375 in Manhattan — before any parts.

Access and Vanity Configuration

Working inside a cramped vanity cabinet with little clearance significantly slows a plumber down. Pedestal and wall-mount sinks are easier to access. A deep 36-inch vanity with limited clearance to the back wall can add 30–60 minutes of labor. If the drain or supply connections are behind a wall rather than under the sink, access increases labor further.

Old Sink Disposal

Most plumbers will haul away your old sink for a disposal fee of $30–$75, or include it in the project price. Cast iron sinks can weigh 80–150 lbs — make sure your quote covers removal if you cannot dispose of it yourself.

How to Save Money on Bathroom Sink Installation

Purchase the Sink and Faucet Yourself

When a plumber supplies the sink and faucet, they typically mark up materials 20–40% over retail. Purchasing your own sink, faucet, drain assembly, and supply lines from a home improvement store or online retailer and having the plumber install what you supply saves $50–$200 on most jobs. Just confirm with your plumber in advance that they’re comfortable installing customer-supplied materials.

Bundle Multiple Projects

If you have other plumbing work that needs doing — a dripping faucet, a slow drain, a running toilet — schedule them all on the same visit. Plumbers often charge a trip or service call fee of $50–$150 that applies regardless of what work is done. Consolidating multiple small jobs into one visit eliminates duplicate trip charges.

Stick to Like-for-Like Replacement

Replacing a drop-in sink with another drop-in sink using the same drain hole configuration is the least expensive option. Switching sink types (for example, converting from a drop-in to a vessel sink) often requires countertop modification, new faucet holes, or different drain hardware — adding cost. If you want to upgrade sink types, budget accordingly or save the upgrade for a full bathroom remodel when all trades are already on site.

Get Multiple Quotes and Compare Plumbers

Plumber pricing for the same job can vary 40–60% depending on the contractor. Getting two or three quotes from licensed plumbers in your area before committing is one of the most effective ways to control cost without sacrificing quality. RateYourPlumber.com lets you compare local licensed plumbers by reviews, pricing, and specialization so you can find a qualified plumber for your bathroom sink project at a fair price — not just whoever answers the phone first.

Avoid Off-Hours and Emergency Rates

Unless a pipe is actively leaking, scheduling your sink installation during normal business hours on a weekday avoids after-hours emergency premiums that can add 50–100% to the labor rate. Plan ahead and schedule at least 1–2 weeks out during busy seasons (spring and summer).

Do Prep Work Yourself

Empty the cabinet under the sink, remove any stored items, and have a bucket and towels ready before the plumber arrives. Some homeowners also remove the cabinet doors to improve access. This small prep saves 10–20 minutes of billed labor time.

Frequently Asked Questions