House in multiple occupation HMO
Contents |
[edit] Overview
According to Gov.uk, a house in multiple occupation (HMO) is:
| … a property rented out by at least three people who are not from one ‘household’ (e.g. a family) but share facilities like the bathroom and kitchen. It’s sometimes called a ‘house share’. |
An HMO is defined as ‘large’ if:
- It is rented to five or more people who form more than one household.
- It is at least three storeys high.
- Tenants share toilet, bathroom or kitchen facilities.
Landlords must have a licence from the local authority if they are renting out a HMO. A licence is valid for up to five years. Unlimited fines can be imposed where an HMO is not licensed.
Landlords must:
- Ensure the house is suitable for the number of occupants (size and facilities).
- Ensure the manager of the house is considered to be ‘fit and proper’ (i.e. there is no criminal record, or breach of landlord laws or code of practice).
- Send the council an updated gas safety certificate every year.
- Install and maintain smoke alarms.
- Provide safety certificates for all electrical appliances when requested.
The council may add other conditions when they consider an application. If landlords disagree with any conditions they can appeal to the First-Tier Tribunal.
HMOs (described as ‘houses in multiple paying occupation’) fall within the sui generis planning use class. ‘Sui generis’ buildings are those that do not fall within any particular use class. The Latin term 'sui generis' means ‘of its own kind’.
See Sui generis for more information.
Minimum room sizes and other restrictions apply to HMOs. See Minimum room size for more information.
[edit] Updates
In October 2018, following legislation introduced by the Ministry of Housing, Communities and Local Government (MHCLG) in September 2018, new rules came into force affecting landlords of HMOs.
Previously, only 'large HMOs' (i.e. those of more than three storeys and with five or more people forming at least two households) had to be licensed by the local housing authority. This threshold was removed by the new rules, extending the mandatory licensing of HMOs to smaller properties.
This is expected to increase the number of HMOs needing to be licensed from around 64,000 to 160,000. The government said the new rules would raise housing standards for tenants, in addition to new rules setting minimum size requirements for HMO bedrooms to tackle rogue landlords and overcrowding. However, the National Landlords Association (NLA) warned that tenants could face eviction or rent increases as a result of certification costs to landlords.
[edit] Related articles on Designing Buildings Wiki
- Core and cluster accommodation.
- Homes (Fitness for Human Habitation) Act 2018.
- Hostel.
- Housing Act 1996.
- Housing Act 2004.
- Houses In Multiple Occupation Act (NI) 2016.
- Licensing buildings.
- Minimum room size.
- Permitted development.
- Planning permission.
- Private-rented sector regulations.
- Property Chamber First tier Tribunal FTT.
- Sui generis.
- Types of building.
- Use class.
[edit] External references
Featured articles and news
ECA, JIB and JTL back Fabian Society call to invest in skills for a stronger built environment workforce.
Women's Contributions to the Built Environment.
Calls for the delayed Circular Economy Strategy
Over 50 leading businesses, trade associations and professional bodies, including CIAT, and UKGBC sign open letter.
The future workforce: culture change and skill
Under the spotlight at UK Construction Week London.
A landmark moment for postmodern heritage.
A safe energy transition – ECA launches a new Charter
Practical policy actions to speed up low carbon adoption while maintaining installation safety and competency.
Frank Duffy: Researcher and Practitioner
Reflections on achievements and relevance to the wider research and practice communities.
The 2026 Compliance Landscape: Fire doors
Why 'Business as Usual' is a Liability.
Cutting construction carbon footprint by caring for soil
Is construction neglecting one of the planet’s most powerful carbon stores and one of our greatest natural climate allies.
ARCHITECTURE: How's it progressing?
Archiblogger posing questions of a historical and contextual nature.
The roofscape of Hampstead Garden Suburb
Residents, architects and roofers need to understand detailing.
Homes, landlords. tenants and the new housing standards
What will it all mean?
The Architectural Technology podcast: Where it's AT
Catch-up on the latest episodes.
Edmundson Apprentice of the Year award 2026
Entries now open for this Electrical Contractors' Association award.
Traditional blue-grey slate from one of the oldest and largest UK slate quarries down in Cornwall.
There are plenty of sources with the potential to be redeveloped.






















