Homeowners typically pay for materials, labor, and any plumbing reconfigurations when converting a double sink into a single. The main cost drivers are cabinet modification, plumbing rerouting, and the quality of fixtures chosen. The cost and price range depend on kitchen layout, permit requirements, and regional labor rates.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Double-to-Single Conversion | $1,000 | $2,300 | $4,000 | Includes cabinet cut, sink relocation, and basic plumbing tweaks |
| Cabinetry & Countertop Adjustments | $400 | $1,200 | $2,500 | May require new countertop edge or patching |
| Plumbing (Supply/Drain) | $300 | $750 | $1,600 | Includes re-routing and fixture connections |
| Fixtures & Hardware | $150 | $400 | $900 | Faucet, supply lines, trap seats |
| Permits & Inspections | $0 | $150 | $600 | Depends on local rules and scope |
| Electrical (If Needed) | $0 | $300 | $900 | GFCI or outlet adjustments for island or countertop |
| Delivery & Disposal | $0 | $100 | $350 | Uninstalls and haul-away of old components |
| Subtotal Range | $1,850 | Assumes standard 30″ width, single sink, no major structural work | ||
Overview Of Costs
Typical cost range: A straightforward conversion generally runs about $1,800 to $4,000, depending on cabinet adjustments, plumbing rerouting, and fixture choices. See per-unit expectations: $60-$160 per linear inch of cabinet modification, plus $750-$1,600 for plumbing changes, and $0-$600 for permitting. Assumptions: standard 30″ wide double sink area, no wall relocation, and typical under-sink layout.
Cost Breakdown
The following breakdown highlights where money goes when converting a double sink to a single sink. Understanding each category helps buyers compare quotes accurately.
| Category | Low | Average | High | Notes |
|---|---|---|---|---|
| Materials | $100 | $350 | $900 | Cabinetry patches, sink cutout, backsplash work |
| Labor | $700 | $1,400 | $2,800 | Install, patching, and finish work |
| Plumbing & Fixtures | $150 | $600 | $1,100 | Drain, supply lines, traps, possible vent work |
| Permits | $0 | $150 | $500 | Local permit or inspection if required |
| Delivery/Disposal | $0 | $100 | $300 | Removal of old fixtures and cabinetry waste |
| Overhead & Contingency | $100 | $250 | $600 | Markup for project management and unexpected fixes |
What Drives Price
Key factors include cabinet configuration, plumbing complexity, and fixture quality. The cost impact of moving drains or vents can add hundreds to thousands of dollars, while upgrading to higher-end faucets or countertops pushes the high end higher. Assumptions: standard wall alignment, no structural modifications, and no gas line work.
Factors That Affect Price
Several variables determine the final bill. Regional labor rates can swing prices by 15%–25% between cities and suburbs. The quantity of work—whether you only reconfigure under-sink plumbing or also rebuild cabinet facings—matters. Off-season scheduling, material rebates, and contractor availability can also shift estimates.
Ways To Save
To reduce costs, consider keeping the existing cabinet footprint and performing only essential plumbing changes. Use stock fixtures rather than custom options, and plan the work during a time with favorable labor rates. If permits are avoidable in your area, confirm whether inspection can be deferred or eliminated with a licensed professional.
Regional Price Differences
Prices vary by region. In the West, expect higher cabinetry and permit costs average 5–15% above national averages. The Midwest often shows moderate costs, with labor roughly 0–10% below national averages. The South tends to have lower permit fees but similar labor ranges to other regions. In suburban zones, expect +5% to +12% versus rural areas, driven by shop rates and access to skilled trades. Assumptions: two-bedroom kitchen, standard 1–2 day project window.
Labor, Hours & Rates
Typical conversion projects take 1–2 days for a single technician team. Labor costs commonly fall in the $60–$120 per hour range, with longer or more complex installs reaching $130–$180 per hour. For a standard 6–12 hour job, labor can total $600–$1,500. If electrical work is minimal or not required, those figures drop accordingly. Assumptions: standard DIY-friendly layout, no heavy demolition.
Real-World Pricing Examples
Three scenario cards illustrate common outcomes. Basic, Mid-Range, and Premium reflect different material choices and labor needs.
Basic: Standard Cabinet Patch + Basic Plumbing
Specs: Standard 30″ base cabinet revised to single sink, basic faucet, no vent relocation. Labor around 8 hours. Materials minimal. Totals: $1,600–$2,000. Assumptions: no structural changes, standard 1 sink configuration.
Mid-Range: Cabinet Adjustments + Moderate Plumbing
Specs: Partial cabinet trimming, countertop patch, mid-range faucet, new traps and lines. Labor about 10–12 hours. Totals: $2,200–$3,200. Assumptions: one vent line reroute, minor backsplash work.
Premium: Custom Cabinet Rework + Full Plumbing Reconfiguration
Specs: Full cabinet reface, countertop replacements, premium faucet, flexible supply lines, possible electrical tweaks. Labor 14–18 hours. Totals: $3,600–$5,200. Assumptions: complex reroute, higher-end fixtures.
Note: Quotes vary by region and contractor. Always verify that the scope includes cabinet cut, plumbing rerouting, fixture updates, and any required permits. Assumptions: standard under-sink space and no wall demolition.
Plus: Maintenance & Ownership Costs
After install, expect minimal ongoing costs beyond routine faucet maintenance and occasional gasket replacements. A typical single-sink setup may incur annual maintenance under $100, primarily for seals and minor leaks. The five-year cost outlook remains modest if no major reconfigurations occur. Assumptions: standard warranty on fixtures, routine use.
