Kitchen islands are one of the most requested features in a kitchen remodel. They’re also where I see the most ordering errors — missing finished ends, wrong overhangs, clearances that don’t work, cabinets oriented the wrong direction.
This post is a prevention guide. If you’re planning an island and ordering RTA cabinets, read this before you place your order.
How Islands Are Actually Built
A kitchen island isn’t a special product category. It’s built from standard base cabinets — the same ones that line your walls — configured and positioned in the center of the room.
There are two basic configurations:
Single run with open sides. One row of base cabinets, with storage accessible from one side (typically the kitchen side) and a finished panel closing off the other side (the side facing the dining area or living space). This is the most common approach for smaller islands and works well in most kitchens.
Back-to-back double run. Two rows of base cabinets positioned back-to-back, with storage accessible from both sides. This creates a larger island with more storage and makes sense when you have the floor space to support it and want to use every inch of the island for function.
Neither approach requires special island-specific cabinets. What it does require is planning — specifically around finished ends, overhangs, and clearances. This is where the orders go wrong.
Finished End Panels: Don’t Skip These
Every exposed side of an island cabinet needs a finished end panel. This is a thin panel — typically 3/4″ — that covers the raw side of the cabinet box and presents a clean, finished face to the room.
If you order your island cabinets without accounting for finished ends, you’ll receive cabinets whose raw plywood or particleboard sides are visible from the dining room, living room, or anywhere the island is visible from the open side. This is a very common mistake in online RTA orders, and it’s an expensive one to fix after the fact.
Count every exposed side and order a finished end panel for each one. On a standard single-run island, that’s typically two finished ends — one on each short end of the run. If the side facing away from the kitchen is open rather than backed against a wall, you may also need a skin panel or furniture panel to close that face.
When in doubt, order more than you think you need. Finished panels can be cut down; they can’t be extended.
Seating Overhangs: The Numbers That Matter
If your island includes seating — bar stools, counter stools — the overhang of your countertop over the cabinet base determines how comfortable that seating will be.
12 inches is the minimum functional overhang for bar stool seating. Knees fit, but it’s snug. This is adequate when space is tight.
15 inches is the comfortable standard. This gives seated guests room to sit with their knees under the counter without bumping the cabinet face. If you have the floor space to accommodate it, design to 15 inches.
No overhang at all — a flat countertop that ends at the cabinet edge — works fine if the island has no seating function, but don’t assume you can add stools later without a countertop replacement.
One structural note: overhangs beyond 12 inches typically require support. Corbels (decorative brackets) or hidden metal support brackets should be used on overhangs of 12 inches or more, particularly with heavier countertop materials like granite or quartz. This isn’t optional — an unsupported 15-inch cantilever of quartz will eventually crack.
Coordinate this with your countertop fabricator. They’ll know what’s required for your specific material.
Clearance Rules: The Mistake That’s Expensive to Fix
This is the one that matters most for livability, and it’s the one most often underestimated on paper.
Minimum clearance on all sides of an island: 42 inches. This is the code minimum in most jurisdictions and the functional minimum for one person working in the kitchen. It’s workable, but it’s not comfortable in a busy household.
Preferred clearance: 48 inches. This is the standard I recommend. It allows two people to work comfortably on opposite sides of the kitchen without constantly stepping around each other. If you’re designing a kitchen where two people cook at the same time, 48 inches is the target.
60 inches or more if you have the space and you entertain frequently. The extra room allows for comfortable traffic flow even with guests standing at the island and someone actively cooking.
Measure your floor space honestly before you determine island dimensions. The island size you want has to fit within the clearance rules, not in spite of them. If the math doesn’t work at 48-inch clearances, the island needs to be smaller — or the layout needs to be reconsidered.
Cabinet Orientation: Which Way Does Storage Face?
On a single-run island, all of your cabinet doors and drawers will face one direction. The question is which one.
In most kitchens, storage faces the kitchen side — meaning the cook can reach into the island without walking around it. The opposite side (dining/living area side) is closed with a finished panel or furniture panel.
On a double-run island, you have storage on both sides. This raises the question of what goes where. The typical approach: drawers and frequently-used storage face the kitchen side; less-used storage, trash pullouts, or wine storage face the seating or living side.
Think about how you actually move through your kitchen during meal prep and assign storage accordingly. An island full of items you never reach for during cooking is wasted space.
Electrical and Plumbing: Flag These Before the Layout Is Final
If your island will include a sink, a dishwasher, a cooktop, or electrical outlets, the location of the island is not flexible — it’s determined by where the plumbing stub-outs and electrical circuits can reach.
Running plumbing to an island requires a floor penetration and, in many cases, significant subflooring work. Electrical outlets in an island are required by code in most jurisdictions if the island is a certain size, and those outlets need to be on a circuit that’s routed through the floor.
None of this is a reason to skip a sink or outlets in your island. It is a reason to flag these features early — before the cabinet order, before the countertop is specified, and definitely before any demolition starts. The location of your plumbing stub changes where the sink cabinet goes, which changes the island dimensions, which changes the countertop layout.
If you’re working with a designer (remote or otherwise), tell them on day one if you want a sink or built-in appliances in the island. It affects everything downstream.
The Most Common Island Ordering Mistakes
To summarize what I see most often in orders that come back with problems:
- No finished end panels ordered — raw cabinet sides visible from the dining area.
- Overhang not planned — countertop ordered flush with cabinet, stools don’t fit.
- Clearances ignored or underestimated — island is too large for the actual floor space.
- Sink or outlet location not communicated — layout finalized before plumbing constraints are accounted for.
- Wrong cabinet depth — standard 24″ base cabinets work for most islands, but if you’re doing a double-run, the total depth of the island plus both overhangs needs to be measured against available floor space.
These aren’t design opinions. They’re logistics, and they’re fixable before the order ships. They’re expensive after it arrives.
Book a Free Remote Design Consultation
Island design is one of the most detail-intensive parts of a kitchen layout, and it’s where getting a second set of eyes pays off. I’ve been doing this for 30 years, and I can look at your floor plan and measurements and flag any of the issues above before they become problems.
The consultation is free. The mistakes it prevents are not.
Book your free remote design consultation here.
Or visit kitchensbyremote.com to learn more.
Kitchens By Remote — Remote kitchen design by a 30-year cabinet industry veteran, serving customers in all 48 states.