Standard Room Sizes: Bedrooms, Living Rooms, Kitchens

The area written inside a room on a floor plan tells you less than you’d think. A 12 m² bedroom can take a double bed with space on both sides, or it can be a long, narrow room where the bed only fits against the wall. This guide gives the standard room sizes to hold each room on a plan up against: the usual sizes for every room in a flat, the legal minimums where they exist, and the widths that decide what really fits.

All sizes are internal, measured wall to wall, the way plans give them. 1 m² is 10.76 sq ft; 1 m is 3 ft 3 in.

Legal minimums at a glance

Only a few places set minimum room sizes for ordinary homes, and they apply to new homes, not to every flat already built.

Where	Rule	What it says
England	Nationally Described Space Standard (NDSS)	Single bedroom at least 7.5 m² (81 sq ft) and 2.15 m wide. Double bedroom at least 11.5 m² (124 sq ft); the main double at least 2.75 m wide, any other double at least 2.55 m. Ceiling at least 2.3 m over 75% of the floor.
England, licensed HMOs	Licensing rules since 2018	A room slept in by one person over 10 at least 6.51 m² (70 sq ft), two people over 10 at least 10.22 m² (110 sq ft), a child under 10 at least 4.64 m² (50 sq ft).
US	International Residential Code (IRC) R304	Every habitable room at least 70 sq ft (6.5 m²) and at least 7 ft (2.13 m) in every direction. Kitchens are exempt. A bedroom also needs an emergency escape opening (R310).
Poland	Warunki Techniczne (2002 regulation)	A flat at least 25 m². No minimum area or width for single rooms since 2018. Living rooms and bedrooms at least 2.5 m high.

A few local details matter:

England: the NDSS applies only where the local council has adopted it in its plan, and to homes made from offices and shops under permitted development since April 2021. Scotland, Wales and Northern Ireland have their own standards. A room sold as a “bedroom” in an older flat may be smaller than any of these numbers.
US: the IRC is a model code, adopted with local changes by each state or city. It doesn’t require a bedroom closet, though many buyers and appraisers expect one. The one-room-of-120-sq-ft rule was dropped in 2015.
Poland: before 2018 the rules for blocks of flats also asked for at least one room of 16 m², and minimum widths of 2.2 m for a one-person bedroom and 2.7 m for a two-person bedroom. Many flats in blocks from those years still follow them. A replacement for the 2002 regulation was due on 20 September 2026 but has not been published; for 18 months new projects can still be designed to the 2002 rules, which almost every flat on sale today follows.
Dubai: buyers compare and price flats by total sq ft rather than against a room-size minimum.

Bedrooms

Bedroom	Small	Typical	Generous	Fits
Single	6.5–7.5 m² (70–81 sq ft)	7.5–9 m² (81–97 sq ft), about 2.3 × 3.5 m	10 m²+ (108 sq ft+)	A 90 × 200 cm bed, a wardrobe, a small desk
Double	10–11.5 m² (108–124 sq ft)	12–14 m² (129–151 sq ft), about 3.2 × 4 m	15 m²+ (161 sq ft+)	A 140–160 cm bed with access both sides, a wardrobe, bedside tables
Main or master	13–15 m² (140–161 sq ft)	15–18 m² (161–194 sq ft)	20 m²+ (215 sq ft+)	A king or super king bed, a wall of wardrobes, a chest of drawers or chair

US houses usually have larger bedrooms, with main bedrooms often at the generous end of the table or beyond. European flats sit near the lower end.

What size room each bed needs

The bed frame is usually 5–15 cm longer and wider than the mattress. Allow at least 60 cm (2 ft) beside the bed on each side you get in from, and about 70 cm at the foot. The detail is in the furniture clearances guide.

Bed (mattress)	Room width, access both sides	Room width, bed against a wall
Single, 90 × 190–200 cm (US twin 38 × 75 in)	2.2 m (7 ft 3 in)	1.6 m (5 ft 3 in)
UK double 135 × 190 cm (US full 54 × 75 in)	2.6 m (8 ft 6 in)	2.1 m (6 ft 11 in)
EU double 140 × 200 cm	2.7 m (8 ft 10 in)	2.1 m (6 ft 11 in)
UK king 150 × 200 cm, EU 160 × 200 cm, US queen 60 × 80 in	2.8–2.9 m (9 ft 2 in–9 ft 6 in)	2.3 m (7 ft 7 in)
UK super king 180 × 200 cm, US king 76 × 80 in	3.1–3.3 m (10 ft 2 in–10 ft 10 in)	2.5–2.7 m (8 ft 2 in–8 ft 10 in)

The length you need is the bed (about 2.1 m with the frame) plus 70 cm at the foot, so about 2.8 m. If the wardrobe goes opposite the foot of the bed, add its depth (60 cm) and 90 cm to open its doors: about 3.6 m in all.

That is why England’s 2.75 m width for the main double bedroom makes sense: it’s the narrowest room where a standard double bed has a usable path on both sides.

Living rooms

Flat	Living room alone	Open-plan living, kitchen and dining
Studio	–	20–28 m² (215–301 sq ft) for the whole room, bed included
One bedroom	14–18 m² (151–194 sq ft)	23–28 m² (248–301 sq ft)
Two bedrooms	16–20 m² (172–215 sq ft)	25–32 m² (269–344 sq ft)
Three bedrooms	18–24 m² (194–258 sq ft)	27–36 m² (291–388 sq ft)

For comparison, London’s housing design guidance (2023) asks new homes for at least 23 m² of combined living, kitchen and dining space for two people, rising by 2 m² per extra person, and a main sitting space at least 3 m wide (3.5 m in homes for three or more). Many designers use those figures as a benchmark elsewhere too. An analysis of 10,000 British houses listed for sale, published by LABC Warranty in 2019, put the average living room in houses built since 2010 at about 17 m² (183 sq ft).

Width decides the layout here too. A sofa is about 90–100 cm deep, the coffee table sits 35–45 cm in front of it, and a 55-inch TV is comfortable to watch from about 2 m (a common rule of thumb). Add a walkway and a TV unit and the depth from the wall behind the sofa to the TV wall comes to about 3.2–3.5 m. A living room narrower than 3 m still works, but the TV ends up close or on the side wall.

What each size fits:

12–14 m²: a two- or three-seat sofa, a coffee table, a TV unit, one armchair at most.
16–20 m²: a three-seat or corner sofa, an armchair, a TV unit, a bookcase or sideboard.
20 m²+: a corner sofa and two armchairs, or a sofa area plus a dining table for four.

If the kitchen is in the same room, see the open-plan kitchen and living room guide.

Kitchens

Kitchen units are about 60 cm deep (US base cabinets 24 in, worktops 25 in). The space between them should be at least 90–100 cm, and 120 cm if two people cook or doors open opposite each other. That makes kitchen widths easy to predict:

Layout	Minimum width	Comfortable width	Typical area
Single run along one wall	1.5 m (4 ft 11 in)	1.8 m (5 ft 11 in)	4–7 m² (43–75 sq ft)
Galley, units on both sides	2.1 m (6 ft 11 in)	2.4 m (7 ft 10 in)	6–9 m² (65–97 sq ft)
L-shaped	1.8 m (5 ft 11 in)	2.4 m+ (7 ft 10 in+)	7–10 m² (75–108 sq ft)
U-shaped	2.4 m (7 ft 10 in)	2.7–3 m (8 ft 10 in–9 ft 10 in)	8–12 m² (86–129 sq ft)
With an island	3.6 m (11 ft 10 in)	4 m+ (13 ft+)	12 m²+ (129 sq ft+)
Kitchen-diner, table for four	–	3 m+ (9 ft 10 in+)	12–18 m² (129–194 sq ft)

The island row is the units (60 cm), an aisle of 100–120 cm, the island itself (90–100 cm) and another 100 cm behind it. Poland’s pre-2018 rules for blocks of flats asked for kitchens at least 1.8 m wide in one-room flats and 2.4 m in larger ones, which matches the single-run and galley widths above.

Bathrooms and WCs

Room	Small	Typical	What fits
Separate WC	1.2 m² (13 sq ft), about 0.8 × 1.5 m	1.5–2 m² (16–22 sq ft)	WC and a small hand basin
Shower room	2.5 m² (27 sq ft), about 1.5 × 1.7 m	3–4 m² (32–43 sq ft)	80–90 cm shower, WC, basin
Bathroom with a bath	3.2 m² (34 sq ft), about 1.7 × 1.9 m	4–5 m² (43–54 sq ft)	170 × 70 cm bath, WC, basin
Family bathroom	5 m² (54 sq ft)	6–9 m² (65–97 sq ft)	Bath and a separate shower, double basin

In the US a full bathroom of 5 × 8 ft (40 sq ft, 3.7 m²) is the common minimum, and a half bath (WC and basin) takes about 18–20 sq ft. A 1.7 m wall is the key number in a small bathroom: it’s the length of a standard bath, and a room narrower than that has to use a shower. Look for a place for the washing machine too; in many flats it goes in the bathroom.

Halls and corridors

Space	Minimum	Comfortable
Corridor inside a flat	90 cm (3 ft); US IRC and England’s accessible-homes standard	1.1–1.2 m (3 ft 7 in–3 ft 11 in)
Poland, corridor inside a flat (2002 rules)	1.2 m, narrowing to 0.9 m for up to 1.5 m of length	–
Entrance hall	1.2 m (3 ft 11 in)	1.5 m+ (4 ft 11 in+), room for a coat cupboard and to turn round with a pushchair or wheelchair

Halls count towards the flat’s area but you can’t furnish most of them. A flat with a long corridor has less usable space than its total suggests; see how to measure floor area.

Whole flats by number of bedrooms

Flat	England minimum (NDSS, one floor)	Poland, common in new blocks	Dubai, rough typical range (often including the balcony)	US, apartments built 2016–2025, average
Studio	37–39 m² (398–420 sq ft)	25–35 m² (269–377 sq ft)	450–550 sq ft (42–51 m²)	about 460 sq ft (43 m²)
One bedroom	50 m² (538 sq ft) for two people	35–50 m² (377–538 sq ft)	700–900 sq ft (65–84 m²)	about 735 sq ft (68 m²)
Two bedrooms	61 m² (657 sq ft) for three, 70 m² (753 sq ft) for four	45–65 m² (484–700 sq ft)	1,100–1,400 sq ft (102–130 m²)	about 1,095 sq ft (102 m²)
Three bedrooms	74–95 m² (797–1,023 sq ft), by number of people	60–80 m² (646–861 sq ft)	1,700–2,100 sq ft (158–195 m²)	about 1,355 sq ft (126 m²)

How to lay out flats at the small end of these ranges is in small flat layout ideas.

The NDSS also asks for built-in storage: 1 m² in a studio, 1.5 m² in a one-bedroom flat, 2 m² with two bedrooms and 2.5 m² with three.

Room counts differ between markets, so compare like with like:

Poland counts every room but the kitchen and bathroom: a “mieszkanie 2-pokojowe” is a living room and one bedroom.
Dubai listings give the built-up area, which usually includes the balcony and sometimes a share of the corridor. Two flats sold at the same size can differ noticeably in the floor you can actually use. A “maid’s room” is often 4–6 m² and works best as storage or a study.
The UK and US count bedrooms. UK agents may also say “bed” for a room too small for a double bed.

What a room of each size fits

Listings in the US, the UK and the UAE often give a room or a whole studio in square feet. Here is what common sizes look like as a room, and what fits in them.

Area	Roughly	What fits
6.5 m² (70 sq ft)	2.1 × 3 m (7 × 10 ft)	The smallest room the US IRC lets you live in: a single bed and a small wardrobe
9.3 m² (100 sq ft)	3 × 3 m (10 × 10 ft)	A single bedroom with a desk, a double bed against a wall, or a study
11 m² (120 sq ft)	3 × 3.7 m (10 × 12 ft)	A double or US queen bed with space on both sides and a wardrobe: a typical second bedroom
14 m² (150 sq ft)	3.7 × 3.8 m (12 × 12.5 ft)	A main bedroom with a king bed and a chest of drawers, or a one-bedroom flat’s living room
19 m² (200 sq ft)	4.3 × 4.3 m (14 × 14 ft)	A living room with a corner sofa and two armchairs, or a generous main bedroom with a seating corner
23 m² (250 sq ft)	4.6 × 5 m (15 × 16.5 ft)	Open-plan living and dining, or a living room with a kitchen along one wall
33 m² (350 sq ft)	5.3 × 6.1 m (17.5 × 20 ft)	Open-plan kitchen, living and dining for a one-bedroom flat, or a small studio with a bed, sofa and kitchen
46 m² (500 sq ft)	–	A typical US studio of about 460 sq ft, or a compact one-bedroom flat

The same area in a long, narrow room fits less: check the narrow side as described below. A closet or wardrobe you can walk into has its own sizes, in the walk-in closet guide.

How to judge a room on a plan from its dimensions

Area is length times width, and the same area can hide very different rooms. Four checks on the plan tell you more than the m² figure.

1. Check the narrow side first

Most furniture has a fixed depth: a bed is 2.1 m long, a sofa about 1 m deep, kitchen units 60 cm. The narrow side of the room decides whether they fit with a path beside them.

Take two bedrooms of 12 m². One is 3.3 × 3.6 m: a 160 cm bed fits across it with 70 cm on each side, and the wardrobe goes on the opposite wall. The other is 2.4 × 5 m: a double bed across the room leaves no path at the foot, and along the room it leaves 90 cm to share between both sides. Same area, one comfortable room and one compromise.

2. Count the free walls

Doors, windows and radiators each take wall you can’t put furniture against. A door needs about 90 cm of wall plus its swing, which is a quarter circle of 70–90 cm. A bedroom with a door in one wall, a window in the second and a radiator under it may have only one wall for the bed and one for the wardrobe. Look at door swings and windows on the plan before you trust the area; how to read a floor plan explains the symbols.

3. Look at the shape

L-shaped rooms, angled walls and chimney breasts all count in the area. A recess of 1 m by 60 cm is perfect for a wardrobe; a 30 cm nib of wall beside a door is not much use. Under sloping ceilings, England’s space standard doesn’t count floor with less than 1.5 m of headroom, but some listings do.

4. Don’t trust the drawn furniture

A plan’s drawn furniture is often slightly smaller than real furniture, and it rarely shows the space needed to open a wardrobe or pull out a chair. Check the room against the real sizes in the bed table above, or your own bed, sofa and wardrobe, frame and legs included.

Common mistakes

Trusting the total area. A 60 m² flat with an 8 m² corridor has less living space than a 55 m² flat without one.
Reading room areas from a plan that isn’t to scale. Use the written dimensions or the stated area, never a ruler on the screen.
Forgetting the bed frame and headboard. They add up to 15 cm in width and length.
Measuring to the skirting in one room and to the wall in another. Compare rooms measured the same way.
Counting a box room as a bedroom. Anything under about 6.5 m² or narrower than 2 m is a study or dressing room for most people.

Check the rooms on your own plan

Write down the width and length of each room from the plan’s dimensions. If only areas are given, estimate the width by comparing it with a door, which is about 80–90 cm wide.
Compare each bedroom with the bed table above. Narrow side first.
Mark doors, windows and radiators, and count the walls left for furniture.
Add up hall and corridor area and take it off the total to see what you can use.
Check the living room depth: sofa, coffee table, a walkway and a TV unit need about 3.2 m.

For a faster check, upload the plan to FloorTo3D; if the sizes look off, set one wall’s real length on the edit page so the scale is right. Each room is labelled with its area and furnished automatically, clear of door swings and windows; if a wall or door was read wrongly, you can correct it on the edit page. You can drag the bed or sofa to see whether another layout works. Walk through it at eye level to judge whether a room feels tight before you view it.

Questions

What is the average bedroom size?

There is no single official figure. In UK and European flats a double bedroom is typically 11–14 m² (118–151 sq ft) and a single 7–9 m² (75–97 sq ft); US houses usually have larger bedrooms.

What is the minimum size for a bedroom?

It depends on where you are. England’s space standard asks for 7.5 m² and 2.15 m wide for a single bedroom and 11.5 m² for a double in new homes. The US IRC asks for 70 sq ft (6.5 m²) and 7 ft in every direction, plus an emergency escape opening. Poland sets no minimum for single rooms, only 25 m² for the whole flat.

Is 10 m² big enough for a double bedroom?

For a double bed alone, yes, if the room is at least 2.7 m wide. There will be little space for a wardrobe with hinged doors, so choose sliding doors or put storage elsewhere. In England a new-build double bedroom must be at least 11.5 m².

What size room do I need for a king-size bed?

About 2.9 m wide for a UK king (150 × 200 cm) or US queen with 60 cm on each side, and about 3.3 m for a US king or UK super king. The room should be at least 2.8 m long, or 3.6 m if a wardrobe faces the foot of the bed.

What is the average living room size?

In British houses built since 2010 it’s around 17 m² (183 sq ft), according to a 2019 LABC Warranty analysis. Flats often have 14–20 m² for the living room alone, or 23–32 m² when the kitchen and dining area share the room. What matters most is a depth of about 3.2 m from the wall behind the sofa to the TV wall.

How big is a 350 sq ft room?

About 33 m², or 17.5 × 20 ft (5.3 × 6.1 m) if it is a rectangle. That is enough for an open-plan kitchen, living and dining room in a one-bedroom flat, or for a small studio with a bed, a sofa and a kitchen along one wall.

How big is a small kitchen?

A single run of units along one wall fits in about 1.5–1.8 m of width and 4–7 m². A galley kitchen with units on both sides needs at least 2.1 m, and 2.4 m is comfortable.

Standard room sizes, and what fits in each