Kitchen Sink Installation Cost
Updated February 25, 2026
Kitchen sink installation costs vary wildly depending on the mounting style. A drop-in swap on an existing cutout is a $150-$300 job. An undermount replacement on granite requires a template and professional installation at $300-$600. A farmhouse sink with cabinet modification runs $500-$1,500+. The sink itself is often the smaller part of the cost -- labor and countertop work drive the total. Here is what to expect for each scenario.
Overview
Kitchen sink installation costs vary wildly depending on the mounting style. A drop-in swap on an existing cutout is a $150-$300 job. An undermount replacement on granite requires a template and professional installation at $300-$600. A farmhouse sink with cabinet modification runs $500-$1,500+. The sink itself is often the smaller part of the cost -- labor and countertop work drive the total. Here is what to expect for each scenario.
Cost Breakdown
Drop-In Sink Replacement (Simplest)
Scenario: replacing an existing drop-in sink with a new drop-in of the same size. Sink cost: $100-$400 depending on material (stainless $100-$300, granite composite $250-$500). Plumber labor: $150-$300 for disconnect old, install new, reconnect plumbing. Total: $250-$700. DIY: $100-$400 (sink only -- you do the labor). This is the most straightforward kitchen sink job. No countertop modification, no special tools beyond a wrench and caulk gun.
Undermount Sink Replacement
Replacing an undermount on granite, quartz, or solid-surface. Sink cost: $150-$600. Plumber labor: $200-$400 for disconnect, removal of old sink (adhesive and clips), install new sink with clips and adhesive, reconnect plumbing. Countertop consideration: if the new sink is a different size or shape, the countertop cutout needs modification by a stone fabricator ($200-$500). Same-size undermount swap: $350-$1,000 total. Different-size swap: $550-$1,500 total.
Farmhouse Sink Installation
Farmhouse (apron-front) sinks require cabinet modification -- the cabinet face frame is cut to accommodate the sink apron. Sink cost: $300-$1,000 (stainless $200-$500, fireclay $400-$900, cast iron $500-$900). Cabinet modification: $100-$400 (carpenter or plumber). Countertop templating and cutting: $200-$500 if granite/quartz. Plumber labor for plumbing connections: $150-$300. Total: $750-$2,200. DIY with carpentry skills: $300-$1,000 (sink plus lumber and supplies).
New Sink in a New Location
Adding a sink where none exists (island, wet bar, laundry room) requires running water supply lines and a drain to the new location. Supply line extension: $200-$600 depending on distance. Drain line with vent: $300-$800 (must tie into existing drain system with proper slope and venting). Countertop cutout: $100-$300. Sink and faucet: $200-$800. Plumber labor: $500-$1,500. Total: $1,300-$3,700. Permit required in most areas for new drain connections.
What Drives Cost Up
Garbage disposal addition: $100-$250 for the unit plus $50-$100 for electrical connection if no outlet exists. Countertop modification for different sink size: $200-$500 from a stone fabricator. Old supply valves that need replacement: $50-$150 per valve. Old drain plumbing that needs updating: $100-$300 for new PVC trap and tailpiece assembly. Dishwasher drain reconnection: $50-$100 if the drain hose routing changes.
Pro Tips
- If replacing a drop-in with the same size, DIY saves $150-$300 in labor. It is a 1-2 hour project with basic tools.
- Buy the sink before scheduling the plumber. The plumber needs to see it to confirm the cutout fits and plan the drain connections.
- If you are getting new countertops, have the fabricator template and cut for the sink at the same time. Adding the sink cutout later costs $200-$500 as a separate visit.
- Bundle the sink installation with a faucet replacement. The incremental labor for installing a new faucet during a sink swap is minimal -- $50-$100 extra vs $150-$300 as a separate job.
Mistakes to Avoid
- Ordering an undermount sink that is a different size than the existing cutout without budgeting for countertop modification. The fabricator visit adds $200-$500 to the project.
- Not checking whether the existing drain plumbing lines up with the new sink drain location. A farmhouse sink drain is often in a different position than a standard drop-in.
- Forgetting to budget for the garbage disposal if the new sink has a different drain configuration than the old one. The disposal mounting may need new hardware.
- Hiring a plumber to install a drop-in sink swap. This is one of the easiest DIY plumbing projects -- the labor savings pay for a nice faucet upgrade instead.
Bottom Line
Drop-in swap: $250-$700 with a plumber, $100-$400 DIY. Undermount same-size: $350-$1,000. Farmhouse: $750-$2,200. New location: $1,300-$3,700. The sink is 30-50% of the total cost -- labor, countertop work, and plumbing modifications make up the rest. Get quotes that itemize every component.
Frequently Asked Questions
What are expert tips for kitchen sink installation cost?
If replacing a drop-in with the same size, DIY saves $150-$300 in labor. It is a 1-2 hour project with basic tools. Buy the sink before scheduling the plumber. The plumber needs to see it to confirm the cutout fits and plan the drain connections. If you are getting new countertops, have the fabricator template and cut for the sink at the same time. Adding the sink cutout later costs $200-$500 as a separate visit. Bundle the sink installation with a faucet replacement. The incremental labor for installing a new faucet during a sink swap is minimal -- $50-$100 extra vs $150-$300 as a separate job.
What mistakes should I avoid with kitchen sink installation cost?
Ordering an undermount sink that is a different size than the existing cutout without budgeting for countertop modification. The fabricator visit adds $200-$500 to the project. Not checking whether the existing drain plumbing lines up with the new sink drain location. A farmhouse sink drain is often in a different position than a standard drop-in. Forgetting to budget for the garbage disposal if the new sink has a different drain configuration than the old one. The disposal mounting may need new hardware. Hiring a plumber to install a drop-in sink swap. This is one of the easiest DIY plumbing projects -- the labor savings pay for a nice faucet upgrade instead.
What is the bottom line on kitchen sink installation cost?
Drop-in swap: $250-$700 with a plumber, $100-$400 DIY. Undermount same-size: $350-$1,000. Farmhouse: $750-$2,200. New location: $1,300-$3,700. The sink is 30-50% of the total cost -- labor, countertop work, and plumbing modifications make up the rest. Get quotes that itemize every component.
What's the bottom line on kitchen sink installation cost?
Drop-in swap: $250-$700 with a plumber, $100-$400 DIY. Undermount same-size: $350-$1,000. Farmhouse: $750-$2,200. New location: $1,300-$3,700. The sink is 30-50% of the total cost -- labor, countertop work, and plumbing modifications make up the rest. Get quotes that itemize every component.
How much does kitchen sink installation cost cost?
The typical cost range is $100-$3,700 depending on type and complexity. Actual costs depend on your location, materials, and whether you hire a professional.