- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 28 Dec 2020
Usable floor area
The usable floor area of a dwelling is: ‘The total usable internal floor area of the dwelling as measured by the surveyor, rounded to the nearest square metre. A new modelling approach adopted since the 2013 report uses assumptions aligned with the Nationally Described Space Standard which was published as part of the Housing Standards Review. It excludes integral garages, balconies, stores accessed from the outside only and the area under external walls. The area remaining represents the total of all room areas, hallways and circulation space including cupboards and stairs. The area under internal partition walls is also included. Loft space is not included unless the loft is habitable, with a fixed stair in place to access it. Dwellings are also grouped into the following five categories:
- Less than 50m2.
- 50 to 69m2.
- 70 to 89m2.
- 90 to 109m2.
- 110m2 or more.’
Ref English Housing Survey, Energy efficiency, 2018-19, published by the Ministry of Housing, Communities & Local Government in July 2020.
See also: Total usable floor area.
 Related articles on Designing Buildings Wiki
Featured articles and news
ECA and SELECT offer assistance to members set back by delays.
The virtual learning event examines Historic Places - People Places.
Getting post-pandemic infrastructure on the right track.
One of England's grandest country houses.
Take just two minutes to provide your feedback.
An update of standards and regulations is under consideration.
Exploring the key to the adoption of this abundant energy source.
His clients have ranged from Liberace to St Nick to world-class athletes.
These tactical structures can be permanent or temporary.
Organisation recognises milestones of the project's next phase.
Welding and metalworking businesses must manage respiratory risks.
New report explores how regulations are being put into action.
The golden thread and BS 8644-1.