Small living room layouts: 8 plans with measurements

Most living rooms in Britain are small. In new homes the average is about 17 m² (LABC Warranty, via Statista), which is roughly 4 × 4.3 m, and many older terraces and flats have less. The good news: a small room follows a handful of numbers. Get those right and the room works, whatever its shape.

Below are eight plans for the room shapes we see most in UK homes. Each one is drawn to scale from above, in centimetres, with the walkway and the key gaps marked. Find the plan nearest your room, then change the numbers to fit your own walls.

The numbers every plan uses

These are designers' rules, not laws. Nobody has tested them in a study, but they come up again and again, and they leave room for real life: knees, mugs, a hoover and a person carrying a laundry basket.

Every number, with its source and the places where sources disagree, is in our living room clearances guide. Every plan below uses a sofa 90 cm deep, which sits in the middle of the usual range.

Plan 1: the 3 × 3.6 m box room

This is the classic small lounge in a flat or a new-build semi. Put a 200 cm sofa on the longest wall without a door, and the TV on the wall opposite. That leaves 40 cm between the sofa and the coffee table, and 90 cm between the table and the TV unit, which is your walkway from the door.

A 160 × 230 cm rug runs 15 cm past each end of the sofa and tucks 30 cm under its front. The rug stops 45 cm short of the TV unit, so nobody trips on its edge on the way in. A floor lamp in the far corner lights the room from the edges.

If your room is narrower than 3 m, choose a TV unit 30–35 cm deep, or hang the TV on the wall and skip the unit. A sofa 85 cm deep instead of 95 cm gives the walkway another 10 cm.

Plan 2: the through-lounge

Many Victorian and Edwardian terraces had their front and back rooms knocked into one. The result is long, about 3.4 × 7 m here, and it feels like a corridor if the sofa goes on one long wall. Treat it as two rooms instead.

The sitting zone faces the front chimney breast. The sofa sits against the long wall, facing the chimney breast, the TV goes on the breast itself, and a 230 × 160 cm rug holds the group together. The dining table sits near the garden doors, with 90 cm behind each row of chairs. That is about the 36 inches (91 cm) the NKBA gives for someone to edge past a seated diner.

The gap between the zones is the hallway of the room: 100 cm wide from the hall door, then 90 cm past the table to the garden. Keep it clear and the room reads as two calm spaces, not one long one.

Before you put a TV on a chimney breast, check its height. A screen over a fireplace often ends up high. Our TV height and distance calculator shows how far you would look up.

Plan 3: the chimney breast with alcoves

A chimney breast is the strongest feature in many UK living rooms, so let the sofa face it. Here the room is 3.8 × 4 m. A 200 cm sofa sits on the wall opposite the fireplace, a 290 × 200 cm rug fills the middle, and an armchair by the window has its front legs on the rug, so the group reads as one.

The TV goes on a low unit in the right alcove. From the middle of the sofa it is about 20° off centre, which most people find easy. Shelves fill the left alcove. The rug leaves 45 cm of bare floor to each side wall, and an 85 cm walkway runs from the door up the left side.

The alternative is the TV above the fireplace and art in the alcoves. That keeps the room symmetrical, but it usually puts the screen higher than seated eye level, so measure first.

Plan 4: the bay window

Bays add light and floor, but a sofa pushed into one blocks both. In this 3.6 × 4.2 m room, a single armchair and a lamp sit in the bay, angled to the room, and the glass stays clear.

The sofa takes the left wall and faces the TV unit on the right. A second chair at the end of the sofa turns the group into a conversation corner. Between the coffee table and the TV unit there is 150 cm, which is generous: the route from the door to the bay runs through it.

Got curtains in the bay? Leave room for them to stack back. A chair that touches the glass also blocks the curtains.

Plan 5: the door in the corner

A door in a corner cuts a diagonal path across the room, and it is tempting to fill the space beside the door. Don't. Here a 100 cm strip stays clear down the window wall, so the door opens fully and the route never zigzags round furniture.

A corner sofa fills the far corner, where nobody walks. The coffee table sits 40 cm from both of its seats, and the TV unit faces the long side. Corner sofas are big, so before you order one, measure the door, the hall and any stairs: our sofa fit calculator checks whether it will get in.

Plan 6: the radiator under the window

In many UK rooms the radiator sits under the window, and the window wall is the only long wall left. You can still put the sofa there. Leave a gap: HOFOR, Copenhagen's heat utility, advises at least 20 cm between a radiator and any furniture. This plan leaves 30 cm, and the valve stays within reach.

The sofa faces the TV unit on the opposite wall, 40 cm from the coffee table. A 230 × 160 cm rug runs under its front legs. The route from the door runs between the table and the TV unit, with 125 cm to spare, and an armchair sits on the right wall.

Plan 7: the long, narrow room

A room about 3 m wide and over 5 m long is common in flats and extensions. Put the sofa on the long wall and you face a TV less than 2 m away, with a long empty corridor beside you. Turn the sofa across the room instead.

Here a 180 cm sofa floats across the width, facing the TV on the end wall. That makes a sitting zone at one end and a work corner at the other, with a desk under the far window. A 90 cm walkway runs the full length of the room, past the end of the sofa.

Something has to give in a 3 m room. To keep the walkway at 90 cm, the rug here runs almost to the wall on one side, instead of the usual 30–45 cm of bare floor. We chose the walkway, because you walk it every day.

Plan 8: the open-plan corner

In an open-plan room, the furniture has to draw the walls. A 290 × 200 cm rug marks out the sitting zone. The sofa floats on its edge with its back to the dining table, and the route runs behind it: 100 cm from the hall door to the kitchen.

Facing the TV on the end wall, the sofa sits 40 cm from the coffee table. A floor lamp at the end of the sofa lights its corner. If the room feels like one big space, a low shelf behind the sofa can make the edge clearer, as long as the route stays at least 90 cm wide.

How to plan your own room

1. Measure the room. Note each wall, then mark the door and which way it swings, the windows and their sills, radiators, sockets and the TV aerial point.
2. Draw it to scale. Squared paper at 1 square = 10 cm works. Cut out paper shapes for the sofa, the table and the rug.
3. Place the biggest piece first. That is usually the sofa. Then check the walkway: about 90 cm on the main route, and nothing in the door's swing.
4. Size the rest from the sofa. The coffee table, the rug and the TV distance all follow from where the sofa sits. Our rug size calculator picks the UK stock size for your sofa and room, and the picture height calculator places the art above it.

Five mistakes we see in small rooms

• A rug that floats in the middle. If no furniture touches it, it makes the room look smaller. Get one big enough for the front legs of the sofa.
• A walkway through the seating. If the only route crosses between the sofa and the TV, the room never feels settled. Move the route to the edge.
• Furniture in the door's swing. A door that opens only halfway makes the room feel cramped before you are inside.
• A coffee table that is too big. Half to two thirds of the sofa's length is plenty, with 35–45 cm to the sofa.
• A TV hung too high. Above a fireplace it is tempting. Check how far you would look up before you drill.

See the plans in your own room

Paper plans get you close. Snuug, the iPhone room app, gets you closer: you walk once round your room, and Snuug rebuilds it in 3D to within about 3% of its real size in our tests of ten homes. Then you can try each of these plans on your own walls, move the sofa in 5 cm steps, and see the walkways before you lift a thing. Our team checks every room by hand before it reaches you, and your first room is free.

Questions

What is the best layout for a small living room?

The one that keeps a clear route of about 90 cm from the door to where you sit, and puts the sofa on the longest unbroken wall, facing the TV or fireplace. In a long room, float the sofa across the room to make a sitting zone instead.

How much space do you need between a sofa and a coffee table?

Designers use 35–45 cm (14–18 in). It is close enough to reach a mug and wide enough for knees. The table itself is usually half to two thirds of the sofa's length.

Should a sofa go against the wall in a small living room?

Often, yes: in a narrow room, the wall is often the only place that still leaves a 75–90 cm walkway. In a long or open-plan room, a sofa pulled away from the wall can mark out a sitting zone and send the route behind it.

What size rug for a small living room?

In the plans here, 160 × 230 cm works with a 200 cm sofa: it runs 15 cm past each end and leaves bare floor to the walls. A 120 × 170 cm rug is usually too small to reach the sofa's front legs. Our rug calculator works it out from your own sizes.

Can I put a sofa in front of a radiator?

You can, with a gap. Copenhagen's heat utility HOFOR advises at least 20 cm between a radiator and any furniture (2021). Plan 6 here leaves 30 cm, and keeps the valve within reach.

Editorial notes

Written by the Snuug team and checked on 1 November 2026. A number with no source beside it is a designers' rule of thumb, not a study.

1. LABC Warranty via Statista, Average living room size in new British homes, 1930–2020
2. Emily Henderson, Living room rules to know (walkways 30–36 in; 18–24 in in a tight room). The page refused our fetch; figures from search summaries, checked 15 Oct 2026
3. Jackie Barnes Design (21 Jan 2026), Key measurements every homeowner should know when designing a living room
4. Castlery UK (5 Aug 2026), Coffee table dimensions
5. Livingetc (Wolfe, 22 Aug 2025), The two-thirds rule
6. IKEA UK, How to choose the right rug size (checked 31 Oct 2026)
7. Furniture Choice, How to measure a sofa (sofa depths; checked 31 Oct 2026)
8. NKBA, Kitchen Planning Guidelines (clearance behind a seated diner)
9. HOFOR (1 Jan 2021), Let the heat spread throughout the room (at least 20 cm from a radiator)
10. Howarth Timber (Green, 14 Sep 2026), UK door sizes (762 mm is the most common internal door in England and Wales)
11. Wikipedia, Optimum HDTV viewing distance (SMPTE 30°, THX 40°; checked 31 Oct 2026)