Types of Rooms in a House
Browse 33 different types of rooms in 8 groups. Pick a room to see its typical small, average and large size in feet or meters, what usually goes in it, and where to plan it.
Reference table
Average Room Sizes in a House
Typical sizes for 33 common room types, measured inside from wall to wall. The range runs from a small to a large example of each room; real homes vary by region, age and size.
| Room | Typical size | Square feet | Square meters | Typical range (sq ft) |
|---|---|---|---|---|
| Living Room | 14 × 18 ft | 252 | 23.4 | 168–396 |
| Family Room | 16 × 18 ft | 288 | 26.8 | 192–432 |
| Great Room | 20 × 24 ft | 480 | 44.6 | 320–672 |
| Media Room | 14 × 20 ft | 280 | 26 | 180–384 |
| Basement Rec Room | 16 × 24 ft | 384 | 35.7 | 224–600 |
| Primary Bedroom | 14 × 16 ft | 224 | 20.8 | 168–256 |
| Secondary Bedroom | 11 × 12 ft | 132 | 12.3 | 100–144 |
| Nursery | 10 × 10 ft | 100 | 9.3 | 80–120 |
| Dorm Room | 12 × 16 ft | 192 | 17.8 | 120–228 |
| Kitchen | 12 × 14 ft | 168 | 15.6 | 100–300 |
| Dining Room | 12 × 14 ft | 168 | 15.6 | 120–252 |
| Breakfast Nook | 8 × 10 ft | 80 | 7.4 | 48–120 |
| Walk-In Pantry | 5 × 8 ft | 40 | 3.7 | 25–64 |
| Powder Room | 4 × 6 ft | 24 | 2.2 | 18–35 |
| Three-Quarter Bath | 6 × 6 ft | 36 | 3.3 | 30–48 |
| Full Bathroom | 8 × 10 ft | 80 | 7.4 | 40–108 |
| Primary Bathroom | 12 × 14 ft | 168 | 15.6 | 120–224 |
| Laundry Room | 6 × 10 ft | 60 | 5.6 | 35–80 |
| Walk-In Closet | 6 × 8 ft | 48 | 4.5 | 25–100 |
| Mechanical Room | 8 × 10 ft | 80 | 7.4 | 24–120 |
| One-Car Garage | 12 × 22 ft | 264 | 24.5 | 240–336 |
| Two-Car Garage | 22 × 22 ft | 484 | 45 | 400–576 |
| Home Office | 10 × 12 ft | 120 | 11.1 | 80–168 |
| Craft Room | 10 × 12 ft | 120 | 11.1 | 80–192 |
| Home Gym | 12 × 14 ft | 168 | 15.6 | 100–320 |
| Flex Room | 12 × 14 ft | 168 | 15.6 | 120–280 |
| Foyer | 8 × 8 ft | 64 | 5.9 | 36–120 |
| Mudroom | 6 × 10 ft | 60 | 5.6 | 36–96 |
| Hallway | 3 ft 6 in × 12 ft | 42 | 3.9 | 30–80 |
| Staircase | 3 ft 6 in × 12 ft | 42 | 3.9 | 33–56 |
| Sunroom | 12 × 14 ft | 168 | 15.6 | 120–224 |
| Screened Porch | 10 × 14 ft | 140 | 13 | 80–252 |
| Deck or Patio | 12 × 16 ft | 192 | 17.8 | 120–320 |
Typical sizes quoted by US design, builder and remodeling guides, not legal standards. The IRC’s 70 sq ft (6.5 m²) minimum with no side under 7 ft applies to habitable rooms such as living rooms, bedrooms, dining rooms and offices; kitchens are exempt, and local codes amend the IRC.
Room types
Types of Rooms by Category
33 room types in 8 groups. Every room in a house belongs to one of them.
| Category | Room types | What they are for |
|---|---|---|
| Living & gathering (5) | Living Room, Family Room, Great Room, Media Room, Basement Rec Room | Shared rooms for relaxing, watching TV and hosting. |
| Sleeping (4) | Primary Bedroom, Secondary Bedroom, Nursery, Dorm Room | Private rooms for sleep, from nurseries to the primary suite. |
| Kitchen & dining (4) | Kitchen, Dining Room, Breakfast Nook, Walk-In Pantry | Cooking, eating and food storage. |
| Bathrooms (4) | Powder Room, Three-Quarter Bath, Full Bathroom, Primary Bathroom | Wet rooms for washing, sized by the fixtures they hold. |
| Utility & storage (5) | Laundry Room, Walk-In Closet, Mechanical Room, One-Car Garage, Two-Car Garage | Service rooms for laundry, storage, cars and equipment. |
| Work & hobby (4) | Home Office, Craft Room, Home Gym, Flex Room | Rooms for working, making things and exercising. |
| Entry & circulation (4) | Foyer, Mudroom, Hallway, Staircase | The spaces that connect rooms and take you in and out. |
| Outdoor-adjacent (3) | Sunroom, Screened Porch, Deck or Patio | Rooms that open the house to the yard. |
Different Kinds of Rooms and How They Fit Together
Public, Private and Service Rooms
Most house plans sort the different types of rooms into zones. Public rooms such as the living room, kitchen and dining room sit near the entry; private rooms such as bedrooms and bathrooms sit away from it; and service rooms such as the laundry, mudroom and garage keep the house running. Use the category chips to browse each group.
Browse Living SpacesWet Rooms: Kitchens, Bathrooms and Laundry
Kitchens, bathrooms and laundry rooms all need water and drains, so plans often group them on shared or stacked plumbing walls. Bathrooms are sized by their fixtures: a typical powder room is about 4 × 6 ft (24 sq ft), a full bathroom about 8 × 10 ft (80 sq ft) and a primary bathroom about 12 × 14 ft (168 sq ft).
Compare Bathroom SizesHalls, Stairs and Entries
Circulation space connects every room. The IRC asks for hallways at least 3 ft wide and stairways at least 36 in wide, and a straight stair takes a footprint of about 3 × 11 to 4 × 14 ft before any landings. Short, shared halls leave more floor for the rooms themselves.
See Entries and HallsFlex Rooms That Change Jobs
A flex or bonus room has no fixed job. At a typical 12 × 14 ft (168 sq ft) it fits a desk, a guest bed, gym equipment or a craft table, so it can follow the household as needs change. Give it a door and an emergency-escape window and it can double as a guest bedroom where local code allows.
Open the Flex RoomHow to Plan the Rooms in a House
Start from a list, size each room, then arrange the zones.
- 1
List the rooms you need
Start with the rooms every home needs: a kitchen, at least one bathroom, bedrooms and a living space. Then add what your household actually uses, such as an office, a mudroom, a pantry or a guest room. The categories above work as a checklist.
- 2
Give each room a typical size
Pick a small, average or large size for each room from the ranges and add up the areas for a first estimate. Keep habitable rooms at or above the IRC baseline of 70 sq ft with no side under 7 ft, and leave extra floor for walls, halls and stairs.
- 3
Arrange the zones and draw to scale
Keep public rooms near the entry, group the bedrooms and back wet rooms onto shared walls. Then draw the plan to scale and furnish each room with the planner linked from its card.
When a List of Room Types Helps
Planning a new home or an addition
List the rooms, check their typical sizes and test the zones before you talk to a builder or an architect.
Furnishing one room
Open a room and follow Plan this room to lay out its furniture in a to-scale plan, from a kitchen work triangle to a vanity and shower.
Checking a listing or your own rooms
Measure a room and compare it with the typical range for its type, or total the square footage of a whole floor.
FAQ
Room Types and Room Size Questions
Most houses combine 8 kinds of rooms: living and gathering, sleeping, kitchen and dining, bathrooms, utility and storage, work and hobby, entry and circulation and outdoor-adjacent. This guide covers 33 common room types, from a powder room of about 24 sq ft to a two-car garage of about 484 sq ft.
There is no single average room size, because rooms do different jobs. Typical sizes are about 14 × 18 ft (252 sq ft) for a living room, 12 × 14 ft (168 sq ft) for a kitchen, 11 × 12 ft (132 sq ft) for a secondary bedroom and 8 × 10 ft (80 sq ft) for a full bathroom. No national survey measures room sizes, and real homes vary by region, age and price.
No US law sets one standard room size. The closest thing is the International Residential Code, a model code most states adopt with changes: a habitable room needs at least 70 sq ft (6.5 m²) with no side under 7 ft. Beyond that, “standard” means common, such as 10 × 12 ft for a home office or 12 × 14 ft for a dining room.
Under the IRC, living rooms, bedrooms, dining rooms and other habitable rooms need at least 70 sq ft with no side under 7 ft; kitchens are exempt. Bathrooms, closets, halls and storage rooms are not habitable rooms and follow other rules, such as hallways at least 3 ft wide and stairways at least 36 in wide. Local codes amend these.
Living & gathering: living room, family room, great room, media room, basement rec room. Sleeping: primary bedroom, secondary bedroom, nursery, dorm room. Kitchen & dining: kitchen, dining room, breakfast nook, walk-in pantry. Bathrooms: powder room, three-quarter bath, full bathroom, primary bathroom. Utility & storage: laundry room, walk-in closet, mechanical room, one-car garage, two-car garage. Work & hobby: home office, craft room, home gym, flex room. Entry & circulation: foyer, mudroom, hallway, staircase. Outdoor-adjacent: sunroom, screened porch, deck or patio.
A living room is the more formal shared room near the entry, typically 14 × 18 ft (252 sq ft). A family room is the casual everyday space, often next to the kitchen, at about 16 × 18 ft (288 sq ft). A great room combines living, dining and often the kitchen in one open space, typically 20 × 24 ft (480 sq ft). Open-plan homes often have a great room instead of separate living and family rooms.
A 120 sq ft room is, for example, 10 × 12 ft (11.1 m²). That is a typical size for a home office or craft room, and a common size for a small dining room or sunroom.
A flex room is an extra room with no fixed job: an office, a guest room, a playroom or a home gym. A bonus room is often a flex room over the garage. Typical flex rooms run about 10 × 12 to 14 × 20 ft (120–280 sq ft). To use one as a bedroom, codes also require an emergency escape opening such as a window.