Kitchen Island Cost Calculator
Estimate the cost of adding a kitchen island including size, material, plumbing, electrical, and seating.
Results
Visualization
How It Works
This calculator estimates the cost of adding a kitchen island based on size, quality, and features. Kitchen islands are one of the most desired kitchen features, adding prep space, storage, and a gathering point. They also significantly increase home value.
The Formula
Variables
- Cabinets — Base cabinet and structure cost per linear foot of island
- Countertop — Countertop material cost based on island dimensions and quality
- Plumbing — Sink installation including supply lines and drain through the floor
- Electrical — Outlet installation and wiring through the floor
- Seating — Additional counter overhang and support for bar-stool seating
Worked Example
A 6' x 3' semi-custom island with electrical and seating but no sink: Cabinets = $2,700, Countertop = $1,680, Electrical = $900, Seating = $480, Flooring = $200 = approximately $5,960 total.
Practical Tips
- Ensure at least 42 inches of clearance on all sides of the island for comfortable traffic flow (48 inches is ideal).
- A portable or rolling island ($300-$1,200) is a great option if your kitchen is too small for a permanent island.
- Adding a sink to an island requires running plumbing through the floor, which is the most expensive add-on.
- Pendant lighting above the island typically costs $300-$1,500 for a set of 2-3 fixtures installed.
- Consider matching your island cabinets to your perimeter cabinets for a cohesive look, or use a contrasting color for a furniture-style statement piece.
Frequently Asked Questions
How much does a kitchen island cost in 2026?
A prefab/budget island runs $2,000-$5,000, semi-custom $5,000-$12,000, and a fully custom island with plumbing and premium countertops can cost $15,000-$30,000+.
What size kitchen do I need for an island?
Your kitchen should be at least 12x12 feet to fit a small island with proper clearance. For a 6-foot island with seating, aim for at least 13x14 feet.
Does a kitchen island add home value?
Yes, kitchen islands are among the top features buyers look for. A well-designed island can recoup 60-80% of its cost at resale and may speed up the sale.
Should I put a sink in my island?
A prep sink is convenient but adds $2,000-$5,000 for plumbing. Only add one if your kitchen layout benefits from a second sink. Most homeowners prefer more counter space.
How long does kitchen island installation take?
A prefab island can be installed in a day. A custom island with plumbing and electrical typically takes 3-7 days including floor work and connections.