Room Size Guide: How Big Should Rooms Be?

Room Recommended Size (m²) Recommended Size (sq ft)
Living & Dining Room 30–40 m² 320–430 sq ft
Living Room 30–40 m² 320–430 sq ft
Dining Room 20–30 m² 215–320 sq ft
Kitchen 10–15 m² (open-plan larger) 110–160 sq ft
Master Bedroom 12–20 m² 130–215 sq ft
Walk-in Closet 6–8 m² 65–85 sq ft
Children’s Bedroom 12–20 m² 130–215 sq ft
Bathroom (Full) 8–10 m² or more 85–110+ sq ft
Guest WC 2–4 m² 20–45 sq ft
Entrance / Hallway 5–10 m² 55–110 sq ft

Living and Dining Room

When you combine the living and dining area, plan around 30–40 m² (320–430 sq ft). This allows you to clearly separate the two zones without feeling cramped. A combined space of this size lets you place a comfortable sofa set, media wall, and still have enough room for a dining table for 6–8 people.

Tip: Use rugs or furniture placement to define zones visually if you prefer an open-plan layout.

Living and dining area layout designed in Plan7Architect – showing clear zoning between the two spaces
Living and dining area layout designed in Plan7Architect – showing clear zoning between the two spaces

Living Room

If you prefer a separate living room, 30–40 m² (320–430 sq ft) provides ample freedom for different seating arrangements and large furniture pieces. A smaller living room often feels restrictive, especially if you want to host guests or add bookshelves and storage units.

Dining Room

A dining room works well at 20–30 m² (215–320 sq ft). This space accommodates a large dining table and chairs, as well as sideboards or cabinets for storage.

  • Table for 4 people: at least 8–10 m² (85–110 sq ft)

  • Table for 6–8 people: 12–16 m² (130–170 sq ft)

  • For larger gatherings: 20 m²+ (215+ sq ft)

Kitchen

A functional kitchen should measure 10–15 m² (110–160 sq ft). This size makes it possible to prepare meals comfortably and still have space for cabinets and appliances. In open-plan homes, you should plan more generously, especially if you want a kitchen island or breakfast counter.

Planning Tip: Keep enough clearance between counters and the island—at least 100 cm (39 in)—so two people can work side by side without bumping into each other.

Master Bedroom

The master bedroom should be at least 12–20 m² (130–215 sq ft). This provides enough space for a double or king-size bed, wardrobes, and even a seating corner if desired. For a more luxurious feel, add a separate dressing area or walk-in closet.

Walk-in Closet

For a walk-in closet or dressing room, plan 6–8 m² (65–85 sq ft). This is sufficient for wardrobes on two sides and a central passageway. If you want extra comfort, consider adding a bench or dressing table.

Modern kitchen floor plan with island created using Plan7Architect software
Modern kitchen floor plan with island created using Plan7Architect software

Children’s Bedroom

A children’s room should measure at least 12 m² (130 sq ft). Ideally, you should aim for 15–20 m² (160–215 sq ft), since children use their room not only for sleeping but also for playing, learning, and later studying. A larger room also gives flexibility as children grow older and need a desk, shelving, or more personal space.

Bathroom

A full bathroom should measure at least 8–10 m² (85–110 sq ft). This space allows you to include a bathtub or a walk-in shower, toilet, and sink comfortably. If you want additional features like a double sink or separate shower and tub, plan more generously above 10 m² (110 sq ft).

Tip: Keep at least 60 cm (24 in) clear space in front of each fixture—sink, toilet, or bathtub—to ensure the bathroom feels spacious and practical.

Guest WC

A guest WC can be compact but should still allow easy use. With 2–4 m² (20–45 sq ft), you can comfortably fit a toilet and a small sink. A well-planned guest WC is very practical for visitors and prevents frequent trips to the main bathroom.

Master bedroom with adjoining walk-in closet visualized in Plan7Architect
Master bedroom with adjoining walk-in closet visualized in Plan7Architect

Entrance and Hallway

The entrance or hallway should measure 5–10 m² (55–110 sq ft). A smaller area may work for compact homes, but with more space you can add storage for coats and shoes, a small bench, or even decorative furniture. This area sets the tone for the whole house, so a welcoming design is worth the investment.

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