Somewhere in the last twenty years the dining room quietly disappeared.

Not from every plan. But open most sets I look at and the formal dining room is gone, and the island is doing that job now. Breakfast, homework, dinner, all of it.

Which would be fine, except nobody ever counts the seats.

A reader sent me his plans a couple weeks back and said it plainly. The island is the primary eating area. No dining table planned. He liked the kitchen, he was just a little nervous it was not enough room.

So I measured it. Nine foot seven.

There is a real number for this and almost nobody uses it.

The NKBA planning guidelines allow 24 inches of knee space per seated diner. That is the width one person needs to sit and eat without their elbow in somebody else's plate.

So four stools needs 96 inches. Five stools needs 120.

His island is 115.

He is five inches short of the fifth seat. Not a foot. Not a redesign. Five inches, on a plan where the island is the only place in the house to eat, and nobody on that job was ever going to run that arithmetic for him.

Depth matters too, and it changes with counter height. At a standard 36 inch counter you want 15 inches of knee depth. At a 42 inch bar it drops to 12. At a 30 inch table height it goes up to 18.

Here is the one that actually ruins kitchens.

It is not enough for the stools to fit. Somebody has to be able to get past them.

NKBA puts it at 44 inches of clear floor behind a seated diner if people walk past. Thirty six if they only edge past sideways. Thirty two if nobody passes behind the seating at all.

Measure that in your own plan and a lot of islands that technically seat five turn into islands that seat five while one person stands up every time somebody needs the refrigerator.

That is the whole game on an island. Not how big it is. How much room is left around it.

On his plan the room gave him 16 feet 6 inches from the countertop edge to the fireplace wall, which is what capped the island at about 3 feet 9 inches deep. The room decided the island. The island did not decide the room.

Here is the part I actually care about, because this is how my own house works.

The island is not just where people eat. It is where the Chromebook lands for homework. Where the phones charge. Where the tablet sits propped up against the fruit bowl. Where somebody is still on a laptop at nine at night.

So go find where any of that plugs in on your plan.

There is a decent chance the answer is nowhere.

The code used to require a receptacle at a kitchen island. The 2023 edition dropped it. If none gets installed, all that is required now is a provision for a future one. A capped box. A conduit somebody could fish a wire through later.

Your electrician knows this. He is going to install exactly what is drawn and quoted, pass inspection, and hand you an island you cannot plug a single thing into. Nobody did anything wrong. It is not hidden, it is just not offered, and you are the only one on that job who is going to care in two years.

The old workaround is gone too. A receptacle in the side of the island below the countertop is not allowed anymore. That leaves a listed pop up outlet that sits flush in the countertop, or an in drawer unit.

If you have never seen one of these work, go watch one come up out of a countertop (Amazon affiliate link). It sits dead flush with the stone, rises when somebody needs it with two plugs and USB on it, and drops back down when they are done. Nothing sticking out of the side of your island, nothing on the counter when company is over. That is the one I would put in.

Either one needs the wire run before the island gets built. Either one is a cheap line item right now and a demolition job after the cabinets and the stone are in.

24. Inches of knee space per seated diner. Multiply by the number of people who actually live in your house, then go look at the length of your island.

This one gets decided before the cabinet order goes in, and the outlet part gets decided at rough in.

"How many stools actually fit at this island at 24 inches each, and how much clear floor is behind them? And is there power in it, or just a provision for power?"

That last question is the one that gets you a straight answer instead of a nod.

This island is one of seven things I would change on that plan, and the full walkthrough is up now. Eight minutes, room by room, including a window that lands in the middle of a wall.

Watch the 8 minute plan review on YouTube

Everything I write about here is the same shape. Cheap while the wall is open, expensive the minute it closes. That is the entire field guide, 50 of them, with the numbers and the words to say before they close the walls.

No homework this week. Just tell me the truth.

If you know somebody whose cabinets are not ordered yet, forward this today. The island is one of the last things people measure and one of the first things they regret.

And if one person signs up off your link, I will send you the full cost breakdown of the first house I ever built. Every line I tracked, 2017 prices, which are going to hurt to look at. It is not for sale and it never has been.

That is it for this week.

Hit reply and tell me how long your island is. I answer these myself.

Jon | Built With This