HHSRS (Housing Health and Safety Rating System)
Quick answer
The risk-assessment framework used by local authorities to judge whether housing is safe. It scores 29 categories of hazard, from damp and mould to falling on stairs. Category 1 hazards are the most serious and trigger enforcement powers including Improvement Notices and Prohibition Orders.
At a glance
- Hazard categories
- 29
- Category 1
- Serious + triggers enforcement powers
- Enforcement
- Improvement notices, prohibition orders, emergency works
Full guide
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Open full guideWhy HHSRS (Housing Health and Safety Rating System) matters for landlords
HHSRS is the evidence base the council uses to classify housing hazards, and its Category 1 threshold is the one that triggers civil and criminal enforcement. Damp and mould, excess cold and falls on stairs are the three hazards that land most PRS landlords in trouble. HHSRS is now being refreshed and the new framework is expected to align more closely with Awaab’s Law timescales.
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Official sources
LetCompliance editorial reviews this entry every quarter against the sources above. Always confirm specific duties with a qualified solicitor or your local council.
Related terms
Decent Homes Standard (DHS)
A government standard for minimum housing quality: free of Category 1 HHSRS hazards, in a reasonable state of repair, with reasonably modern facilities and reasonable thermal comfort. It currently applies to social housing. The Renters’ Rights Act 2025 provides the power to extend it to the private rented sector, but the regulations have not been made — the Government’s implementation roadmap proposes 2035 or 2037, so it is not a duty on private landlords today.
Improvement Notice
A formal notice served by the local housing authority under section 11 (Category 1 hazard) or section 12 (Category 2 hazard) of the Housing Act 2004 requiring a landlord to remedy hazards identified through the Housing Health and Safety Rating System (HHSRS). The notice specifies the works, the deadline and the route of appeal to the First-tier Tribunal. Failure to comply is a criminal offence with civil penalty up to £30,000, and triggers a 12-month Rent Repayment Order window.
Article 4 Direction
A planning tool councils use under article 4 of the Town and Country Planning (General Permitted Development) Order 2015 to remove permitted-development rights, most commonly the right to convert a single-family home (Use Class C3) into a small HMO (Use Class C4) without planning permission. In an Article 4 area, every C3 → C4 conversion needs a full planning application, and operating without it can trigger an enforcement notice, a planning contravention notice or a refusal of HMO licence.
Banning Order
A court order under Part 2 of the Housing and Planning Act 2016 banning a person convicted of certain housing offences from letting property, engaging in lettings agency work or holding an HMO licence. Triggered by a banning-order offence (Schedule 1 of the Act): includes serious housing-condition offences, illegal eviction and unlawful HMO operation. A banned landlord is added to the national database of rogue landlords and breach of the order is itself a criminal offence with up to 51 weeks’ imprisonment.
Civil Penalty Notice
A financial penalty up to £30,000 a local housing authority can impose as an alternative to criminal prosecution under the Housing and Planning Act 2016, the Housing Act 2004 (HMO offences) and various tenancy offences. Common triggers: failure to comply with an Improvement Notice, breach of HMO licensing, unlawful eviction, breach of selective licensing or letting an unsafe property. The landlord can appeal to the First-tier Tribunal within 28 days; unpaid penalties are recoverable in the County Court.
Council Tax
The tax charged on residential property by the local authority. Tenants are usually liable while the property is let as their main residence. Landlords become liable during void periods and for most HMOs (where each tenant has their own AST).