Types of dwelling in approved document m
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.
The 2015 edition of Approved document M, Volume 1: Dwellings, introduced three different types of dwelling:
- Category 1 – Visitable dwellings.
- Category 2 – Accessible and adaptable dwellings.
- Category 3 – Wheelchair user dwellings.
The requirements set out in M4(2) Accessible and adaptable dwellings and M4(3) Wheelchair user dwellings, are optional requirements that only apply if imposed on new development as part of the process of granting planning permission. Otherwise, only the requirements of M4(1) Visitable dwellings apply.
Very broadly, the different levels of requirement are:
- M4(1): Category 1 – Visitable dwellings. Compliance with this requirement is achieved when a new dwelling makes reasonable provision for most people, which includes wheelchair users to access and enter the dwelling, and access habitable rooms and sanitary facilities on the entrance level.
- M4(2): Category 2 – Accessible and adaptable dwellings. This requirement is met when a new dwelling provides reasonable provision for most people to access the dwelling and includes features that make it suitable for a range of potential occupants, including older people, individuals with reduced mobility and some wheelchair users.
- M4(3): Category 3 – Wheelchair user dwellings. This requirement is achieved when a new dwelling provides reasonable provisions for a wheelchair user to live in the dwelling and have the ability to use any outdoor space, parking and communal facilities.
More detail about the specific requirements for each category is set out in the approved document.
See also: Dwelling.
[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 London.
- Approved document M.
- Changing lifestyles.
- Dwelling type.
- Equality Act.
- Inclusive design.
- Lifetime Homes Design Guide (EP 100).
- Lifetime homes.
- Lifetime neighbourhoods.
- People with disabilities.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
New measures to stop people being ripped off
Government to protect families from cowboy builders and aggressive bailiffs.
New Futurebuild showcase brings an innovation-first approach.
National Planning Policy Framework
Understanding the 2026 changes.
ECA's public affairs priorities
Member consultation opens to shape priorities for 2027 to 2030.
Dutyholder responsibilities from 1 July 2026.
Where performance meets practice
The Building Envelope Stage at UKCW Birmingham.
CIAT publishes briefing on planning reforms.
Leaders in Learning for Practice Network
Call for conservation leaders in learning to register interest in new network.
The importance of early engagement
Construction lessons from the Trillium HealthWorks Experience Centre.
Mayors are to be given planning call in powers
Mayors across England will be able to make the most important planning decisions.
The Master Builder: William Butterfield and his times. Book review.
Why construction can't afford to ignore the skills gap.

















