You could get away with 210 cm 240 cm for studies bathrooms children s rooms etc.
Minimum ceiling height attic bedroom.
However you can pay extra for it to be higher at 2 55m 2 7m or 3m when building.
The minimum ceiling height in rooms with sloped ceilings such as a finished attic space is 7 feet over at least 50 percent of the room area.
The rest can be less than 7 feet.
If a room has a sloping ceiling which is common in attics at least 50 percent of the room area must have a 7 foot ceiling.
Minimum ceiling height for basements with no habitable spaces section r305 1 1.
In an attic room with a sloping ceiling or projection below ceiling line or non habitable room or similar a height that does not unduly interfere with the proper functioning of the room or space.
Portions of a room with a sloping ceiling measuring less than 5 feet 1524 mm or a furred ceiling measuring less than 7 feet 2134 mm from the finished floor to the finished ceiling shall not be considered as contributing to the minimum required habitable area for that room.
More than 50 of the ceiling space should be on average a minimum height.
As a result you can t choose to go lower than these requirements laid down by this code.
The bca sets out the minimum ceiling heights for different rooms.
Basements without habitable spaces and hallways shall have a minimum ceiling height of no less than 6 feet 8 inches.
With full home additions costing 75 000 minimum and usually far higher many homeowners search for creative ways to increase living space without overly decreasing their bank account.
In a stairway 2 0m measured vertically above the nosing line.
The standard ceiling height for most houses in australia is 2 4m.
Section r305 1 1 indicates the minimum ceiling height for basements without habitable spaces and hallways.
In other words if your attic has 200 square feet over which the ceiling is at least 5 feet high then for a minimum of 100 square feet 50 of 200 that is the ceiling height needs to be at.
Room area is this case is calculated as the total floor space with walls at least 5 feet tall.
In a room or space with a sloping ceiling or projections below the ceiling line within a a open link in same page habitable room aa in an attic a height of not less than 2 2 m for not less than two thirds of the open link in same page floor area of the room or space.
R304 4 height effect on room area.
One way is by working within the home s existing footprint and converting the attic into living space.
Living areas and hallways must have a ceiling height of 7 feet or more and bathrooms and laundry rooms must be at least 6 feet 8 inches tall.