How to Choose a Sofa That Fits Your Room

A sofa that looks perfect online can be the wrong size at home. These four checks take ten minutes with a tape measure, and they work for any room, from a Victorian terrace to a new-build.

Measure the wall, not just the room

Most people measure the whole room. What matters is the length of wall the sofa will sit against, up to the nearest door, radiator or window.

In many terraced houses, the wall facing the fireplace is also the wall with the hall door. A room can be 3.6m wide and still leave only 2.2m of usable wall before the door swings open.

Here's how that plays out with one of our own ranges:

Both have the same 96cm depth and the same look, so choosing the smaller size costs you nothing in style. Measure the wall from the corner to the edge of the door frame, then take off a few centimetres so the door opens freely.

Check the depth, and leave a walkway

Depth is the measurement people forget. It runs from the back of the sofa to the front edge of the seat, and a deep sofa quietly eats floor space.

Work forward from the wall:

1. The sofa's depth (the Hartpury is 96cm).
2. A gap to the coffee table. Around 45cm is a comfortable guide: close enough to reach a mug, far enough for legs.
3. The coffee table itself.
4. A walkway if people pass through the room. As a guide, allow around 75–90cm so two people can pass without turning sideways.

Add those up. If the total is more than the room allows, choose a shallower sofa or a smaller coffee table, or move the walkway to the other side of the room.

Look at the arms

Two sofas with the same overall width can seat very differently. Wide, rounded arms look generous, but every centimetre of arm is a centimetre less seat.

When you compare sofas, ask for the seat width as well as the overall width. If your wall is tight, a sofa with slimmer arms can give you the same seating in a smaller footprint. If you love a chunky arm, go down a size and keep the look.

Arm height matters too. A higher arm (the Hartpury's is 73cm) is good for leaning on and makes a room feel cosier; a lower arm keeps sightlines open in a small room.

Measure every doorway on the way in

A sofa has to get into the room before it can fit in it. Walk the delivery route from the front door and measure the narrowest point.

• Front door, porch and any inner doors: width and height of the opening, not the door itself
• Hallway width, and any tight turns
• Stairs, if the room is upstairs: width, turns and ceiling height at the bend
• Radiators, light switches or banisters that stick out into the route

Compare those numbers with the sofa's depth and height, as sofas usually go through doorways on their side or back. If it's close, ask us before you order. We can tell you whether the legs come off and how the sofa is best carried in.

Tape it out before you buy

The quickest way to be sure is to mark the sofa's footprint on your floor with masking tape. Add the coffee table and walk around it for a day. You'll know straight away whether the room still works.

Bring your measurements to us

Write down your room, your wall to the nearest door and your narrowest doorway, then bring them to our showroom in Dorchester or Bournemouth. We'll check the fit with you and show you options in the same style at a different size. Browse our Autumn Offers or pop in and try them.

Product sizes correct as of 30 September 2026.