Basement v cellar
The Building Regulations Approved Document F, 'Ventilation' suggests that, in relation to dwellings, a basement:
'...is a dwelling or a usable part of a dwelling (i.e. a habitable room), that is situated partly or entirely below ground level.'
Whereas a cellar:
'... is part of a dwelling which is situated partly of entirely below ground level, and is distinct from a basement in that it is used only for storage, heating plant or purposes other than habitation.'
NB: Approved document B, Fire Safety, Volume 1 Dwelling houses, defines a ‘basement storey’ as ‘A storey with a floor which at some point is more than 1,200 mm below the highest level of ground adjacent to the outside walls.’
[edit] Related articles on Designing Buildings
- Approved documents.
- Attic v loft.
- Basement.
- Basement excavation.
- Basement impact assessment.
- Basement waterproofing.
- Bathroom definition.
- Crawl space.
- Dwellinghouse.
- Flat definition.
- Household.
- Planning (Subterranean Development) Bill.
- Residential definition.
- Right of support.
- Safe room.
- Sanitary accommodation.
- Storey.
- Types of room.
- Utility room.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Government approach could undermine delivery and regeneration.
World's first mass timber data centre.
The overlooked environmental aspect of data centre development.
Introduction to radon awareness
New technical information sheet published by CIOB.
Updated supplier guide can help electrical contractors engage with NHP.
CIAT confirm the winners of the 2026 architectural technology awards.
Government launches a one stop shop for flood preparedness.
Sir Edwin Lutyens: Britain's greatest architect? Book review.
CIOB publishes free template to help assess and manage risks.
ECA's reflections on Party Conference season
Burnham wants to be confident of winning before asking for a fresh mandate.
New Chief Construction and Scientific Adviser
Sergio Cavalaro, Professor of Infrastructure Systems at Loughborough University.
Building safety levy for England
CIAT publish estimator tool for members.
Water sector faces a growing crisis that could slow the delivery of vital infrastructure.