4x4 living room layout: three plans for a 4 m × 4 m room

A 4 × 4 m living room is 16 m². Living rooms in new British homes average about 17 m² (17.1 m², LABC Warranty, via Statista), so this is close to what many new houses have. It feels generous after a 3 m room, but a square room has its own trap. Put everything against the walls and the middle stays empty, with the TV across a 3 m gap.

Below are three plans drawn to scale. We checked every one: nothing overlaps, the door opens fully and every walkway stays clear. After the plans come the sofas that fit, the rug and the TV.

The numbers every plan uses

These are designers' rules, not laws. More detail, and where sources disagree, is in our living room clearances guide.

Plan 1: float the sofa, walkway behind

Pull the sofa 100 cm off the bottom wall and the space behind it becomes the walkway. The 220 cm sofa faces the TV on the top wall, two armchairs face each other across the coffee table, and the four seats sit together on a 290 × 200 cm rug.

The numbers: 40 cm from the sofa to the table, and 37 cm from each chair to the table. The table is 110 cm long, half the sofa's length. The left chair stands 20 cm from the radiator under the window. The rug runs 35 cm past each end of the sofa, tucks 40 cm under its front, and leaves 55 cm of floor to each side wall.

From the sofa your eyes are about 230 cm from the screen, which suits a 55–65 in TV. Why float it? Against the bottom wall, the same sofa would put you about 330 cm from the TV, with 165 cm of empty floor between the coffee table and the TV unit.

Plan 2: a corner sofa against the walls

A corner sofa in a corner is what many people do with a square room, and it can work. The long side, 260 cm, runs down the left wall, and the short side, 215 cm, runs along the bottom. The coffee table sits 40 cm from both seats, and a 145 cm route runs from the door to the sofa, past the TV unit.

The catch is the TV distance. From the long side, your eyes are about 330 cm from the screen on the right wall. THX's farthest seat suggests a 74 in screen at that distance, and the SMPTE figure 80 in, so a 75 in TV is the size this plan wants. A 55 in TV would sit 2.4 times its diagonal away, well beyond THX's farthest seat at about 1.75 times.

The top of the room becomes a work corner, with a desk under the window, 20 cm in front of the radiator. The 160 × 230 cm rug tucks 30 cm under both sides of the corner sofa.

Plan 3: two sofas facing, fireplace at the end

For a room with a fireplace, and a TV elsewhere or no TV at all, face two sofas across the coffee table. The seat fronts are 130 cm apart: 40 cm, a 50 cm table, then 40 cm. That sits inside the 1.2–2.1 m that Edward Hall called social distance, a common guide for facing seats.

The left sofa stands against the wall. The right one stands 90 cm off the right wall, so the walkway from the door runs behind it. The hearth and chimney breast close the top of the group, with shelves in both alcoves. A 200 × 290 cm rug sits under the front legs of both sofas, 30 cm under the left one and 40 cm under the right, and runs 45 cm past their ends.

A TV sees this plan side-on, so if you watch every evening, choose Plan 1.

Which sofas fit a 4 × 4 m room

How we worked it out, in cm: floor at each end = (400 − sofa length) ÷ 2. We take your eyes as 35 cm behind the front edge of the seat (our working figure) and the screen as 10 cm off the wall. So eyes to screen = 400 − (sofa depth − 35) − 10 with the sofa on the wall, and 100 cm less with it floated. A sofa about two thirds of its wall (Livingetc) is about 268 cm here, so even a 4-seater is in proportion.

The rug and the TV

Rug. A 200 × 290 cm rug suits a 200–250 cm sofa in this room: it runs 20–45 cm past each end. If you want every leg of the sofa and chairs on it, a 240 × 340 cm rug still leaves (400 − 340) ÷ 2 = 30 cm of floor to two walls. A 160 × 230 cm rug is too small for a 220 cm sofa, because it would run only 5 cm past each end. Our rug size calculator picks the stock size for your own sofa and room.

TV. In a square room the sofa's position decides the screen size.

One Japanese lab study found people chose to sit further back than these figures: about 2.8 m from a 55 in screen and 3.1 m from a 65 in one. By that measure a 65 in TV suits Plan 2 too. Put the centre of the screen at your seated eye height, about 100–110 cm on most sofas. Our TV height and distance calculator works out both numbers for your own room, and our guide to a living room layout with a TV covers the TV wall itself.

Five mistakes in a square living room

• Everything against the walls. The middle stays empty, and the TV is 3.3 m from the sofa. Float the sofa, or buy the TV for that distance.
• A rug that is too small. A 160 × 230 cm rug under a 220 cm sofa looks like a mat. In 16 m², 200 × 290 cm is the starting size.
• A floated sofa with no walkway behind it. If you float it, leave 90–100 cm behind, or it is just a sofa in the way.
• Chairs too far from the table. In a bigger room it is tempting to spread out, but past 45 cm the table is out of easy reach. Keep chairs and sofa 35–45 cm from it, as Castlery UK suggests.
• A chair against the radiator. HOFOR advises at least 20 cm between a radiator and furniture.

Float the sofa in your own room first

Floating a sofa is a big move to try with a heavy sofa and a tape measure. Snuug, the iPhone room app, rebuilds your own living room in 3D from one walk round it, to within about 3% of its real size in our tests of ten homes. Pull the sofa off the wall in 5 cm steps and watch the walkway behind it, paste a shop link and see the 200 × 290 cm rug under your own sofa, and paint the walls before you buy a tin. Our team checks every room by hand before it reaches you, and your first room is free.

Questions

Is a 4x4 living room a good size?

Yes, for most homes. At 16 m² it is just under the 17.1 m² average for a living room in a new British home (LABC Warranty, via Statista). It fits a 3-seater sofa, two armchairs and a 200 × 290 cm rug, with a 90–100 cm walkway.

Where should the sofa go in a square living room?

Either against a wall, with a large TV on the wall opposite, or floated about 100 cm out from a wall with the walkway behind it. Floating is the usual fix in a square room: against the wall, the TV ends up about 3.3 m away and the middle of the room stays empty.

What size sofa for a 4x4 living room?

A 3-seater of 200–250 cm. Designers' rough rule is a sofa about two thirds of its wall, which is about 268 cm on a 4 m wall. A 220 cm sofa leaves 90 cm at each end.

What size rug for a 4x4 living room?

200 × 290 cm. It runs 35–45 cm past each end of a 200–220 cm sofa and, in Plan 1, leaves 55 cm of floor to the side walls. A 240 × 340 cm rug also fits, leaving 30 cm to the walls, if you want every leg of the sofa on it.

What size TV for a 4x4 living room?

It depends where the sofa is. Against the wall you sit about 3.3 m from the screen, and the THX and SMPTE figures give 74–80 in for that. Float the sofa 100 cm out and you sit about 2.3 m away, which suits a 55–65 in TV.

How far apart should two facing sofas be?

Plan 3 puts the seat fronts 130 cm apart, with a 50 cm coffee table between them and 40 cm each side. A common guide is Edward Hall's 'social distance' of 1.2–2.1 m, observed in one culture in the 1960s, so treat it as a starting point.

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 (35–45 cm from the sofa; half to two thirds of its length)
5. Livingetc (Wolfe, 22 Aug 2025), The two-thirds rule (sofa about two thirds of its wall; 12–18 in of floor around a rug)
6. Emily Henderson, Living room rug size (6–8 in past each end of the sofa; checked 15 Oct 2026)
7. IKEA UK, How to choose the right rug size (checked 31 Oct 2026)
8. Furniture Choice, How to measure a sofa (most 3-seaters and corner sofas 85–100 cm deep; checked 31 Oct 2026)
9. Hall (1966), The Hidden Dimension, via Wikipedia, Proxemics (social distance 1.2–2.1 m)
10. HOFOR (1 Jan 2021), Let the heat spread throughout the room (at least 20 cm from a radiator)
11. Howarth Timber (Green, 14 Sep 2026), UK door sizes (762 mm is the most common internal door in England and Wales)
12. Wikipedia, Optimum HDTV viewing distance (SMPTE 30°, THX 40° to 28°; checked 31 Oct 2026)
13. Journal of the ITE of Japan 65 (2011), preferred viewing distance of HD LCD TVs (we read the abstract only)