Principal storey
The building regulations set out legal requirements for specific aspects of building design and construction. A series of approved documents provide general guidance about how different aspects of building design and construction can comply with the building regulations.
Approved document M provides guidance for satisfying Part M of the building regulations: Access to and use of buildings, which requires the inclusive provision of ease of access to, and circulation within, buildings, together with requirements for facilities for people with disabilities.
Approved document M, Volume 1: Dwellings (2015 edition incorporating 2016 amendments), defines the ‘principal storey’ as:
‘The floor level (of the dwelling) on which the main living space is located, where this is not the entrance storey.’
Where the ‘entrance storey’ is; '...the floor level (of the dwelling) on which the principal private entrance is located’, that is, '...the entrance to the individual dwelling that a visitor not familiar with the dwelling would normally approach (usually the ‘front door’ to a house or ground floor flat.’
[edit] Related articles on Designing Buildings Wiki
- Access and inclusion in the built environment: policy and guidance.
- Access consultant.
- Accessibility in the built environment.
- Accessible threshold.
- Approach route.
- Approved document M.
- Changing lifestyles.
- Equality Act.
- Inclusive design.
- Localised obstruction.
- Lifetime homes.
- People with disabilities.
- Point of access.
- Principal communal entrance.
Featured articles and news
The role of construction in tackling the biodiversity crisis
New CIOB Nature of Building digital series available now.
The Nature Towns and Cities initiative
Grants of up to 1 million for local councils and partners.
The continued ISG fall out October updates
Where to look for answers to frequently asked questions.
Building safety remediation programme for Wales
With 2024 October progress updates.
In major support package for small businesses.
Conservation and transformation
Reading Ruskin’s cultural heritage. Book review.
Renovating Union Chain Bridge.
AI tools for planning, design, construction and management
A long, continually expanding list, any more to add?
Robots in the construction industry
From cultural characterisations to construction sites.
Empowering construction with AI integration
New horizons with a human touch.
Key AI related terms to be aware of
With explanations from the UK government.
A Better Hiring Toolkit for construction
Tooling up to hire under best practice standards in the sector.
Recharging Electrical Skills in Wales
Step by step collaborative solutions.
Ireland budget announcement 2025
CIOB responds with positivity, criticism and clarity.
New HES national centre for traditional building retrofit
Announced as HES publishes survey results which reveal strong support for retrofit.
Retrofit of Buildings, a CIOB Technical Publication
Expected to become one of the largest activities in the global construction industry.