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Kitchen Island with Sink (Design Guide)

Here is our guide to a kitchen island with sink including positioning, dimensions, cost and popular design ideas.
Contemporary kitchen with island black sink white quartz countertops black pendant lights white cabinetsIs there a cook in the world who didn’t wish for more counter space? Probably not. That’s one reason kitchen islands are so popular.

A basic kitchen island provides a place to prep your meals before cooking and adds some under-counter storage to the footprint of your kitchen. But why stop at basic?

To go the extra mile in your home renovation, redesign, or construction, consider installing a sink on the kitchen island.

Should You Put Sink in Kitchen Island?

Modern kitchen island with sink across from stove white quartz and cabinetsInstalling your sink on the kitchen island instead of on the main countertop is an innovative trend in kitchen design. Before you’re ready to jump on the bandwagon, ask yourself these questions to determine if a kitchen island sink is right for you.

First, what do you want to look at while doing mundane kitchen chores? Washing dishes is boring. In many kitchens, the sink faces a wall, giving you a double dose of boring. Is it any wonder the dishes pile up?

Changing the location of the sink from the main countertop won’t magically clean your dishes. However, depending on the placement and orientation of your kitchen, placing the sink on the island might allow you to see out a window, or into other rooms and areas of your home. Washing dishes is a lot more attractive when you have something interesting to look at while you do it.

Next, what is the purpose of the kitchen island? If you’re hoping that your school-age children will do their homework there, ensure they have a seating area well away from the splash zone, to protect any papers and electronics from potential water damage.

If you want to encourage your partner to help out more in the kitchen, an extra prep sink on the island can go a long way towards defusing tension and reducing collisions.

Finally, how much space do you have to work with? Read more about types of kitchen layouts here.

Kitchen Island Dimensions with Sink

Kitchen island distance apart from main countertops designThe standard size for a kitchen island is usually two feet by four feet. Kitchen islands are never recommended if your kitchen is less than 13 feet wide.

The space between your kitchen island and the opposite countertop should be at least 36”, but ideally 42-45”. This allows for free movement when encumbered by pots and pans.

To accommodate a sink, the island will need to be at least seven feet long. When planning for a sink, experts recommend that you preserve a ‘landing area’ on both sides — a place to set food or cookware.

Ideally, you’d have 18” of unobstructed counter on one side of the sink, with 24” on the other.

The other important dimension to consider when installing a sink on your kitchen island is counter height.

Standard counters are 36 inches high, and the average sink is eight inches deep, so the bottom of your sink is about 28 inches off the ground. This is comfortable for most people.

Standard kitchen counter heightBut if your kitchen island was designed with entertainment or breakfast bar seating in mind, it could be taller — 42” is fairly standard. In this configuration, an average sink bottom would be about 34” off the ground.

If you have small children or are on the shorter side of average height, this might be inconveniently tall and make it uncomfortable to wash dishes.

On the other hand, if you’re taller than average, you may never want to go back to a standard-height sink again. Read more about kitchen island size guidelines here.

Cost of Kitchen Island with Sink

Modern kitchen island with sink quartz counters chrome pendant lights and barstoolsA sink can be purchased relatively cheaply — basic models start around $200 and the average cost for a sink is $400 which, when you consider the amount of use it gets, is quite reasonable.
That being said, a sink must be connected to water, and for that, you’ll need a plumber.

Plumbers sometimes charge by the hour, with national costs averaging $45-65 per hour of work. To install a sink, they often offer a set price, around $200, that would include the labor and any additional parts needed for the installation.

But wait — where is that water coming from? Chances are, your kitchen island doesn’t butt up against a wall, so you’ll need to run a new pipe under the floor.

Expect to pay a professional around $500 for the installation of these new pipes and the sink. Of course, the cost is dependent on the orientation and condition of your current plumbing.

Running a new pipe may require partial removal of your flooring and subflooring, so make sure to calculate the cost of replacement or repair in the overall cost of installing a sink in your kitchen island.

Kitchen Island with Cooktop and Sink

Kitchen island with electric cooktop stove, sink and mirror cabinetsA long kitchen island with a cooktop and sink can transform a small one wall kitchen into the heart of your home. It requires a very large island — at least nine feet.

The main advantage of this setup is that you don’t face a wall when doing prep, cooking, or washing dishes. Make sure to plan plenty of room around the cooking area — at least 15” of free space on either side is ideal.

Kitchen Island with Stove and Sink

Kitchen island with gas stove and sink For families with children and a kitchen that faces a play or homework space, this can be a great way to keep an eye on the kids while also getting dinner on the table. You will have to sacrifice some under-counter space to accommodate the oven.

The island will need to be at least nine feet long. Make sure the oven is completely accessible when the door is fully open.

Kitchen Island with Prep Sink

Kitchen island with prep sink and main countertops with two sinksA prep sink is also known as a ‘wet bar’ or ‘entertainment’ sink. The standard size for a prep sink is 15-25” in length, 15” wide, and five to six inches deep, so it’s noticeably smaller than a kitchen sink.

Its purpose is to wash vegetables, clean utensils, and provide water during the cooking process. If you plan to use your kitchen island as your main prep space, a prep sink is a great idea. See more types of kitchen sinks on this page.

Outdoor Kitchen Island with Sink

Outdoor kitchen island with sinkPutting a sink in the outdoor kitchen countertop of the island is a great way to increase the use you get out of your outdoor kitchen.

You can save yourself the trips back and forth to the house by bringing all your prep and washing up outside. Some people even keep a second set of dishes outdoors!

Kitchen Island with Farmhouse Sink

Kitchen island with farmhouse sink silver pendant lightsA farmhouse sink looks great just about anywhere. Farmhouse sinks protrude slightly from the island — to avoid bumping your hip as you round the corner, make sure you still have at least the recommended 36 inches of clearance between the protrusion of the sink and the opposite countertop or wall.

See our gallery of the types of kitchen islands on this page for more ideas.