How to Measure Your Living Room for a Corner Sofa in UK

Falling for the wrong size corner sofa is the most expensive mistake you can make in a living room.

It never happens in the shop. It happens at home, three weeks later, when a sofa the size of a small car arrives and swallows the room. Or worse, when it will not turn the corner at the top of your stairs.

The good news is that this is completely avoidable. Measuring for a corner sofa takes about ten minutes and a tape measure. This guide walks you through it step by step, gives you every clearance number in one place, and ends with a list you can write down before you shop.

What You Need Before You Start

Nothing fancy. Grab a metal tape measure, since a fabric one sags and lies to you. A pen and paper. A second person makes the long walls much easier. Clear the room roughly so you can reach the walls.

That is it. Now measure.

Measure Your Living Room in 6 Steps

Follow these in order. Write every number down as you go, because you will not remember them later.

Step 1. Measure both walls at the corner. 

A corner sofa sits into a corner, so it has two sides. Measure along the first wall from the corner outwards to where you want the sofa to end. Then do the same along the second wall. Note them separately, because the two sides are rarely the same length.

Step 2. Mark every obstacle on those walls. 

Walk both walls and note anything in the way. A radiator, a plug socket, a windowsill, a chimney breast, a bay. Measure how far each one sticks out and where it sits. These decide whether the sofa can actually sit flat against the wall.

Step 3. Measure your walkways. 

Stand where people walk and measure the gaps. You need clear routes around the sofa, not just space for the sofa itself. The next section gives you the exact numbers to aim for.

Step 4. Measure the wall the long side will face. 

The chaise, the long part of the L, points somewhere. Usually at a television or a window. Measure that wall too, so you know the chaise lands where you want it.

Step 5. Tape the shape on the floor. 

This is the step that saves people. Use masking tape or newspaper to mark the sofa's footprint on the floor, using the dimensions from a sofa you like. Live with it for a day. You will feel immediately whether it fits or crowds.

Step 6. Measure the route in. 

Measure your narrowest doorway, the turn in your hallway, and the width of your stairs. This is the step most people skip, and it causes the most refunds. More on this below.

The Clearance Numbers, All in One Place

Measuring the sofa is only half the job. You also need space around it. Here is every clearance number worth knowing, collected in one table.

These are minimums, not targets. If you have the space, a little more always feels better than a little less.

Remember the Long Side Faces a Direction

A corner sofa is not symmetrical. The chaise sits on one side, and you have to choose which.

Stand in the doorway and look into the room. If the long side should stretch out to your left, you need a left hand corner sofa. If it should sit on your right, you need a right hand one. The names refer to where the chair is as you look at the sofa from the front.

Get this the wrong way round and the chaise blocks your walkway or turns its back on the television. It is the most common ordering mistake, and it costs nothing to get right if you check before you buy. Browse the corner sofas range with your orientation already decided and the choice gets much simpler.

Measure the Way In, Not Just the Room

Your living room might have all the space in the world. That means nothing if the sofa cannot reach it.

Measure the width of your narrowest doorway, the turn where your hallway bends, and the width and ceiling height of your stairs if the sofa is going up. A tight terrace hallway or a sharp stair turn stops more deliveries than a small room ever does.

Here is the part that saves most sofas. A corner sofa does not travel as one solid block. Most arrive in two or three sections and get assembled in the room, so a large corner can pass through a doorway that a smaller two seater could not. Check the listing says sections before you rule out a big sofa for a tricky hallway.

If a fabric feels tight, a lower and slimmer design helps too. A low back corner sofa is easier to manoeuvre round a turn and keeps sightlines open once it is in.

The British Living Room Problem

British rooms come with obstacles that measuring guides written abroad never mention.

The chimney breast sits in the middle of your best wall and eats the space a corner needs. The radiator lives under the window, exactly where the back of a sofa wants to go. Bay windows curve out and change the shape of the wall. And terraces are often long and narrow, which suits a corner sofa run one way and fights it run the other.

Measure around all of these, not up to them. A compact corner sofa fits a period room far better than a large one, since it works with the chimney breast and the bay rather than against them.
If your room is on the small side, our guide to small living room ideas with corner sofas for UK homes shows how to lay one out without crowding the space.

Your Pre-Shopping Checklist

Write these down before you look at a single sofa. Take the list with you, or keep it on your phone.

• Wall one length, from the corner outwards.

• Wall two length, from the corner outwards.

• The position and depth of every radiator, socket and chimney breast.

• The wall length the chaise will face.

• Left hand or right hand orientation.

• Walkway space on every open side.

• Narrowest doorway width.

• Hallway turn width.

• Stair width and ceiling height, if going upstairs.

With those nine numbers in hand, you can shop with total confidence and never guess.

Before You Buy

Three things save you from the expensive mistake.

Measure both corner walls separately, since they are rarely equal. Leave the clearances in the table above, because a sofa you cannot walk around is a sofa you will resent. And measure the route in before you fall for anything, because the biggest sofa in the world is no use stuck on the landing.

Ten minutes with a tape measure now saves weeks of regret later.

FAQs

How much space do you need for a corner sofa in a UK living room?

A typical corner sofa needs around 240 cm by 170 cm of floor space, plus 60 cm of walkway around the open sides. This suits most UK living rooms, which tend to be on the smaller side. Tape the shape on the floor before you buy, so you can see how much room is left.

What are the standard dimensions of a corner sofa in the UK?

Most corner sofas in the UK run 240 to 280 cm along the longer side, 170 to 200 cm on the shorter side, and 85 to 100 cm deep. The two sides are usually different lengths, so measure both. Sizes are given in centimetres here, as that is what UK sofa shops use.

How much clearance should you leave around a corner sofa in a UK home?

Leave at least 60 cm for walkways, 80 cm between the sofa and the TV, and 40 to 45 cm between the sofa and a coffee table. Keep it 20 cm from a radiator too, which matters in UK homes where radiators sit under the windows. That way the heat can still move around the room.

How do I know if a corner sofa will fit through my UK door?

Measure your narrowest doorway, your hallway turn and the stairs. Many UK homes have tight halls and steep stairs, so this step really counts. Most corner sofas arrive in sections and are built in the room, so a big sofa can often get through a gap a smaller one cannot.

How do I measure for a left or right hand corner sofa in the UK?

Stand in the doorway and look into the room. If the long part should sit on your left, you need a left-hand corner sofa. If it should sit on your right, you need a right-hand one. UK brands label them this way, so check before you order.