Your Sofa Will Lie to You: Measure the Route, Not Just the Room
Short version: Don't buy furniture until you’ve measured the doorways, corridors, and stair turns, not just the floor area. You need 60–90 cm of clear walking space, and a double-height void eats a whole floor. The shell (weather-tight structure) is roughly 55–60% of a turnkey budget, so plan your layout early to avoid expensive mistakes.
The £3,000 Wardrobe That Never Made It Upstairs I’ve lost count of the times a client has called me, gleeful, about a bargain antique wardrobe or a “perfect” corner sofa. Then I ask two questions: *How wide is your landing?* and *Does the stairwell have a 90-degree turn at the top?* Silence. Then the real conversation begins. Honestly, I’ve seen more tears over a fitted bed that couldn’t be manoeuvred around a newel post than over any structural beam failure. Furniture doesn’t care about your mood board. It cares about clearances.
The 60–90 cm Rule That Saves Your Sanity In my experience, the single most ignored number in residential design is the walking clearance. You need a clear passage of at least 60 cm for a single person to shuffle past, and 90 cm if you want to carry a laundry basket, turn around with a hoover, or let two people pass without performing a dance. I’ve designed kitchens where the “work triangle” (fridge to sink to hob) was a perfect 2.5 m each side — but the gap between the island and the oven was 55 cm. Pointless. You can’t open the dishwasher and the oven door at the same time. Measure the *routes*, not just the room dimensions. Draw the path from the front door to the sofa, from the sofa to the loo, from the bed to the wardrobe. If any of those paths narrow below 60 cm, your house will feel wrong, no matter how beautiful the finishes are.
The Stair Trap and the Double-Height Void Here’s a hard-won lesson: a double-height void over the living room is a glorious, light-filled space — but it removes the floor above it, permanently. That’s not a mistake; it’s a trade. But the trap I keep seeing is the furniture that was bought for the *void* that can’t get to it. A three-seater sofa for a first-floor lounge? Fine, if the stairwell has a straight run and a 90 cm door. But a corner sofa with a chaise? That’s a 2.4 m piece that needs a 2.4 m clear turn at the top of the stairs. I’ve had clients dismantle sofas on the landing, swearing, with screwdrivers. And wardrobes — flat-pack or bespoke — are worse. A 2.1 m tall wardrobe won’t go around a 90-degree stair bend unless you have a 1.2 m square landing. Verify your stair width and landing size *before* you order anything. And for the love of God, measure the external door openings too — a 90 cm front door won’t take a 1.1 m mattress.
Bedrooms South, Bathrooms North, and the Shell Budget This isn’t furniture, but it determines where your furniture *lives*. In my climate, you want bedrooms and living spaces facing south or east — morning light for the bedroom, afternoon sun for the living room. Utility rooms and bathrooms can take the north side; you don’t need daylight to fold socks. Now, the money question: the shell — the weather-tight structure with roof, walls, windows, and doors — runs about 55–60% of your total turnkey budget. That means the remaining 40–45% is for services, finishes, and yes, furniture. If you blow your budget on a bespoke sofa, you’ll be skimping on the kitchen worktop. Plan the layout *first*, then the shell, then the furniture. I’ve seen too many people design a beautiful shell and then discover their dream bed doesn’t fit in the master — because the window is in the wrong place.
Setbacks and Fire Gaps: The Boring Stuff That Bites Before you even think about a rug, check your setbacks. As guidance — and you must verify locally — you’re typically looking at about 3 m from side and rear boundaries, and 5 m from the street. Fire gaps between buildings vary by wall material, but 6–15 m is a common range. This matters because a 3 m setback might mean your side window is 1.5 m from the neighbour’s wall — which means you’ll never open your curtains. And if you’re planning a garden office or a shed for your “man cave” sofa, the fire gap will dictate whether you can have a glazed wall or need a brick one. None of this is sexy. All of it is expensive to fix later.
The Real Test: Tape on the Floor Before you buy anything, do what I do with every client: use masking tape. Mark out the exact footprint of the sofa, bed, and wardrobe on the floor. Then walk the routes. Sit on a chair where the sofa will be. Open an imaginary oven door. Lie down on the floor where the bed goes and look at the ceiling — is the light fitting going to hit you in the face? This takes twenty minutes and saves thousands. I’ve had clients laugh at me, then call me a week later to say the tape test caught a 15 cm overlap they’d missed. That’s the difference between a house and a home.
FAQ Q: What’s the minimum hallway width for a house? A: As guidance, aim for 90 cm clear — that allows two people to pass and furniture to be moved. 60 cm is the absolute floor for a single person, but you’ll hate it every day.
Q: Can I put a wardrobe in a room with a sloped ceiling? A: Yes, but measure the height at the *front* of the wardrobe, not the back. A standard 2.1 m wardrobe needs that full height for at least 60 cm of depth. Otherwise, you’ll be storing shoes in a coffin-like space.
Q: How much should I budget for furniture in a new build? A: Roughly 10–15% of your turnkey budget, but only after you’ve spent the first 55–60% on the shell. If you’re at 70% and still need a sofa, you’ve got a problem.
Have you ever bought a piece of furniture that didn’t make it through the door? Tell me — I’ll bet I’ve heard worse.
(Norms and setbacks vary by country — treat specific figures here as guidance and verify with a local professional.)