Island RestorationMost kitchen islands are not special furniture. They are standard base cabinets — the same boxes that run along your walls — bolted back to back or in a row, anchored to the floor, and wrapped in finished panels.
Understanding that is the difference between paying custom-island prices and paying cabinet prices.
Standard Base Cabinet Dimensions
Islands are built from the same modular sizes as the rest of the kitchen:
| Dimension | Standard |
|---|---|
| Depth | 24 inches |
| Box height (without countertop) | 34.5 inches |
| Finished height with countertop | 36 inches |
| Widths available | 12, 15, 18, 21, 24, 30, 33, 36, 42, 48 inches |
| Toe kick | 4.5 inches high, 3 inches deep |
Two 24-inch-deep cabinets back to back give a 48-inch island. Add a gap of 1–3 inches between the runs if you need to route electrical or plumbing up through the middle.
What Makes an Island Cabinet Different
Buying wall-run base cabinets and calling it an island is where most DIY island projects go wrong. Three things differ:
All four sides are visible
No wall to anchor to
Toe kick may be omitted or run all the way around
Cabinet Grades and What They Cost
For a typical island using 6–10 linear feet of base cabinets:
| Grade | Island cabinet cost | What you get |
|---|---|---|
| RTA / flat-pack | $600–$1,500 | You assemble. Widths limited to common sizes. Finish quality varies sharply by brand. |
| Stock, assembled | $1,200–$2,500 | Pre-built, standard sizes only, delivered ready to set. |
| Semi-custom | $2,500–$5,000 | Modified depths and widths, wider door and finish selection. |
| Custom | $5,000–$12,000 | Any dimension, matched to existing cabinetry, specialty interiors. |
Semi-custom is the tier where island-specific options appear — reduced depths for tight rooms, integrated end shelving, applied furniture legs, and finished panels matched to the door.
Matching an island to existing cabinets
Matching a new island to cabinets installed years ago is harder than people expect. Wood darkens with UV exposure, and finishes get discontinued.
The reliable move is the opposite one: make the island deliberately different. A contrasting island color is a mainstream design choice — and it turns an impossible matching problem into an intentional one. If you do need a match, order a door sample first and check it against your existing cabinets in daylight, not showroom lighting.
Building an Island From Stock Cabinets
The budget path, in order:
- Choose widths that sum to your target length. A 72-inch island is a 36 + 36, or a 30 + 42, or a 24 + 24 + 24. Combinations of standard widths almost always beat one custom-width box on price.
- Decide single or double run. Single run against a finished back panel for 24-inch depth; two runs back to back for 48.
- Order finished end panels for every exposed side. This is the step most commonly forgotten, and retrofitting it costs more than ordering it.
- Anchor with floor cleats. Screw 2×4 cleats into the subfloor inside the cabinet footprint, set the boxes over them, fasten through the cabinet bottoms.
- Join the boxes to each other through the face frames or side panels before setting the countertop.
- Overhang last. If the counter overhangs more than 12 inches, add corbels or steel brackets before the stone goes on.
Where Island Cabinets Differ From the IKEA Approach
ikea kitchen island cabinets is a heavily searched variation, and the system genuinely works for islands — SEKTION base cabinets assemble into an island readily and the cost lands near the RTA tier.
Two differences to plan for: IKEA base cabinets are 24 inches deep like any other, but the system uses a suspension rail for wall cabinets that is irrelevant here, so island assembly is floor-anchored like any other brand. And IKEA's finished cover panels are sold separately per side — budget for them explicitly rather than discovering them at checkout.