To measure up for a fabric sofa set, record the length and width of the room, mark doors, windows and radiators, then map out each sofa’s footprint on the floor with masking tape. Allow around 60cm to 90cm for walkways, roughly 40cm to 45cm between the sofas and the coffee table, and check that every piece can pass through your front door, hallway and any stairs. Measuring the diagonal depth of each sofa is the step most people forget, and it is often the one that decides whether a set will fit.
A sofa set, usually a three seater paired with a two seater, or a sofa with matching armchairs, takes up far more floor than a single sofa. It also needs to be arranged so people can talk, see the TV and move around easily. This guide walks you through the process in the order that makes most sense, from the empty room to delivery day. If you are comparing combinations as you go, our range of modern fabric sofa sets UK sale lists the dimensions for each piece so you can plan accurately.
Gather a few simple tools before you begin: a retractable metal tape measure, a notepad or phone, masking tape and, ideally, a second person to hold the other end of the tape. A rough sketch of the room on squared paper makes it much easier to test different layouts without moving any furniture.
It also helps to have a few product listings open so you can compare the measurements of different sets. Our wider modern sofas UK collection shows width, depth and height for each design, which is all the information you need for planning.
Measure the full length and width of the room at floor level, wall to wall. Old houses in particular are rarely truly square, so measure each wall separately rather than assuming opposite sides match.
Next, record the position and width of every door, window, radiator, fireplace and built in unit. Note which way doors open and how far they swing into the room. Mark plug sockets, TV points and light switches as well, since these influence where lamps, side tables and the TV can realistically go.
Finally, measure the height of window sills. A sofa placed under a window should sit comfortably below the sill so curtains can close and light is not blocked.
Sofa sets are usually arranged in one of three ways. Each needs a different amount of space.
The larger sofa sits along one wall and the smaller sofa runs along the adjoining wall, forming an L. This is the most space efficient arrangement for typical UK living rooms, and it keeps the centre of the room open. It works well when the TV or fireplace sits on the wall opposite the larger sofa.
Two sofas face each other across a coffee table, often either side of a fireplace. This is a sociable layout that suits through lounges and period rooms with central chimney breasts. It needs more width than an L shape, because both sofas and the table sit in a line.
A sofa with two armchairs or a pair of smaller sofas creates three sides of a square. It suits larger rooms and open plan spaces where seating needs to be clearly zoned. In smaller rooms it can feel crowded.
Comfortable rooms depend on the spaces between furniture as much as the furniture itself. Use these general guides as a starting point:
Write these clearances onto your sketch. If a layout only works by squeezing walkways below 60cm, consider a smaller set or swapping the second sofa for an armchair.
Every sofa listing gives three main measurements: width, depth and height. Width is from arm to arm. Depth runs from the front of the seat to the back of the frame. Height is from floor to the top of the back.
Two further measurements are useful. Seat height affects how easy it is to sit down and stand up, which matters for older family members. Seat depth affects comfort: deeper seats suit taller people and lounging, while shallower seats offer a more upright posture.
When planning an L shape, remember that the depth of the first sofa eats into the length of the adjoining wall. If one sofa is 90cm deep, the second sofa effectively loses 90cm of usable wall unless you leave a gap between them.
This is the step that turns numbers into something you can picture. Use masking tape to mark the outline of each sofa on the floor, along with the coffee table and any side tables. Then walk around the room as you normally would. Open doors, pull curtains and sit where the sofas would be.
You will quickly see whether the set feels comfortable or crowded. It is far easier to make changes at this stage than after delivery. If the room feels tight, try a smaller coffee table, or swap one sofa for a compact chair. A pair of modern tub chairs UK sale can provide similar seating to a two seater in a smaller footprint.
The coffee table ties a sofa set together, and its size matters. A useful guide is to choose a table around two thirds the length of the larger sofa. The table height should be close to the seat height of the sofas, or slightly lower.
In an L shaped layout, a square or round table often works best because it is equally reachable from both sofas. In a facing layout, a long rectangular table suits the space between them. Browse our modern coffee tables UK range to compare shapes and sizes once you know the space available.
Before you order, measure every point the sofas need to pass through on their way to the room. This includes the front door, porch, hallway, internal doors and stairs if the living room is on an upper floor.
For each doorway, measure the width and height of the opening with the door fully open. Measure the hallway width at its narrowest point, and note any tight turns, radiators or newel posts. Compare these figures with each sofa’s height and depth, since sofas are usually carried on their side or tilted.
The diagonal depth is particularly important. To estimate it, measure from the top of the back to the front edge of the seat at an angle. If the diagonal depth is less than the door width, the sofa can usually be tilted through.
Once the set fits, step back and consider the room as a whole. A large rug can unite two sofas, especially in an L shape. Side tables and lamps add practical surfaces and light. Storage keeps clutter under control so the seating area stays calm.
If you are considering combining a sofa set with a corner sofa in a larger room, our guide to pairing a sofa set with corner sofas in UK living rooms offers layout ideas for bigger spaces.
Buying based on photos alone is the most frequent error. Sofas often look smaller in a showroom or online image than they feel at home. Always check the measurements against your own plan.
Another mistake is forgetting about doors. A sofa that fits the wall may still block a door swing or stop a cupboard opening. Finally, avoid filling every wall. Leaving some empty space makes the room feel more relaxed and lets the sofas breathe.
With the room measured, the layout taped out and the access route checked, you can choose a sofa set with confidence. Careful planning means the set will feel as though it belongs in the room from the day it arrives. You can explore our wider range of sofas and living room furniture at Furniture in Fashion, with free delivery to most UK mainland postcodes.
In an L shape, you typically need two adjoining walls of around 2 metres and 1.5 metres, plus walkway space. Always check the exact dimensions of the set you like.
It is the measurement from the top of the back to the front of the seat at an angle. It helps you judge whether a sofa can be tilted through a doorway.
Around 40cm to 45cm is comfortable for most people.
Check for removable legs or sectional designs before ordering. Measuring the access route in advance prevents most delivery problems.
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