Common floor-plan mistakes people regret

I visit a client six months after they move in and ask how it's going. "We live here fine," he says, "but at night I cross the living room to the bathroom like a minefield, dodging the sofa. And the kitchen smells reach the bedroom because there's no proper extraction." It's rarely a one-off. People pay for a design and then live in an awkward box. In my experience about 90% of the pain is drawn in on paper. Here's what I see most.

1. No entrance buffer — heating the street

The classic: you step from outside straight into the living room. Looks open and airy — until winter, when every opened door sends a cold draught through the whole house and your heating bill with it. A small vestibule or an airlock with two doors pays for itself. If you really won't have a tambour, at least put a second door a metre or so in. A porch of about 1×1.5 m with space for coats and shoes doesn't "cost" area — it saves it.

2. The "wagon" — a corridor that eats the plan

I've seen a house that became one long 10-metre corridor with doors off it: walk from the kitchen to a bedroom and you cross the entire home. Clear passages want to be 60–90 cm, but stretched into a tube they kill the plan — often 15% of the floor becomes dead corridor you can't even put a cupboard in. Don't run the movement axis in a straight line. Use a central hall that fans out to rooms, or merge kitchen-living-dining into one volume and push bedrooms into a separate wing, so the corridor is short and only serves the private zone.

3. A broken kitchen triangle

The most under-rated distance is the one between hob, sink and fridge. Each side of that triangle wants to be roughly 1.2–2.7 m. Put the fridge at one end, the hob at the other and the sink under the window, and you clock up laps every evening. Worse is a dishwasher across a passage: open it and the walkway drops to nothing. Draw your movement — how you come in with bags, where food lands, where the pan lives. If the fridge-sink-hob path breaks, redraw it before you tile.

4. Double-height that steals the upstairs

A client sees a magazine living room with two storeys of air and says "I want that." Fine — but a double-height void takes floor off the level above; you can't put full bedrooms over it, so upstairs shrinks to boxes while downstairs is a large volume that's hard to heat. It can be worth it on a tight plot or for a real view — but then orient the glazing to the sun and run heating along it, or the glass "weeps" with condensation.

5. Rooms facing the wrong way

Bedrooms and living space are usually best to the south or east — morning light, less evening heat — and utility, storage and bathrooms to the north. It sounds obvious, yet I keep seeing bedrooms on the north side and the kitchen due south: the bedroom is cold and damp, the kitchen is a sauna (south sun plus the hob). Let windows open onto your own garden to the south-east and keep a mostly blank wall to the north with a small bathroom window.

The one habit that prevents all of this

Don't chase a picture from the internet. Sit down and play out your day: get up, shower, kitchen, garage. If the route from bedroom to bathroom passes through the living room, that's a fail. If you can't see the kids' room from the kitchen, that's a fail too. It's far cheaper to move a wall on a plan than in concrete — which is exactly what a planner is for.

(Norms and setbacks vary by country — treat specific figures here as guidance and verify with a local professional.)

What layout mistake annoys you most in your own home, or one you've stayed in? It might be the next article.