Damp and mould in rental homes is not just unpleasant — it is a serious health hazard, and UK law now treats it that way. Two pieces of landmark legislation have fundamentally changed what tenants can demand and what landlords must do. Whether you rent from a housing association, a council, or a private landlord, your rights have never been stronger.
Why This Matters: The Story Behind the Law
In December 2020, two-year-old Awaab Ishak died in Rochdale. The coroner's inquest, concluded in November 2022, found that his death was caused by prolonged exposure to black mould in the social housing flat where his family lived. His housing provider had repeatedly failed to act despite complaints.
His death shocked the country and triggered a wave of legislative reform. The result is a set of laws that, for the first time, give tenants a legally enforceable right to live in a home free from dangerous damp and mould — with hard deadlines for landlords to act.
Awaab's Law: What It Means for Social Housing Tenants
Awaab's Law became part of the Social Housing (Regulation) Act 2023 and came into force on 27 October 2025. It applies to all social landlords — councils and housing associations — in England.
Under Awaab's Law, once a social landlord is informed of a potential damp or mould hazard, strict legal timelines apply:
- 10 working days to carry out a full investigation
- 5 working days (from completing the investigation) to make the property safe if a serious hazard is found — using temporary measures if necessary
- 12 weeks to complete all supplementary works needed to prevent the hazard recurring
- A reasonable time to complete all remaining repair works
Emergency hazards — those posing an immediate risk to life — must be addressed within 24 hours.
These are not targets or guidelines. They are legal requirements. If your landlord misses them, you have the right to escalate formally.
The law will expand in phases. From 2026, it covers additional hazards including excess cold, excess heat, fire risks, electrical hazards, and hygiene issues. By 2027, it will cover all serious hazards defined under the Housing Health and Safety Rating System (HHSRS), with the exception of overcrowding.
The Renters' Rights Act 2025: New Protections for Private Tenants
Private renters have historically had weaker legal protections around disrepair. The Renters' Rights Act 2025, which came into force on 1 May 2026, marks a major shift.
For the first time, private landlords are being brought under a comparable legal framework. Key changes include:
- Decent Homes Standard: Private landlords will be legally required to meet this standard, ensuring properties are safe, free from serious hazards, and in a reasonable state of repair.
- Extension of Awaab's Law: The Act creates the framework to extend Awaab's Law to the private rented sector. Hard timelines for private landlords will be introduced on a phased basis following 2026.
- Stronger enforcement: Local councils gain enhanced powers to inspect and enforce standards in private rented homes, and tenants can more easily challenge landlords who fail to act.
The direction of travel is clear: the days of a private landlord ignoring a mould complaint with impunity are ending.
What Counts as Damp and Mould Under the Law?
Not all moisture is equal. The law is most concerned with hazards that pose a genuine risk to health. The relevant assessment framework is the Housing Health and Safety Rating System (HHSRS), which categorises hazards by the likelihood and severity of harm.
Common types found in rental homes include:
Condensation mould — the most widespread type, typically appearing on cold exterior walls, around windows, and in poorly ventilated spaces. Often black or grey. Can cause or worsen respiratory conditions, asthma, and allergies.
Rising damp — moisture drawn upward through floors and walls from the ground. Usually appears as a tide mark at low level. Indicates a structural problem requiring professional remediation.
Penetrating damp — water entering through the building fabric: a leaking roof, defective guttering, cracked render, or failed window seals. The fix must address the source, not just the surface.
In all cases, the responsibility to identify the cause and carry out appropriate remediation lies with the landlord — not the tenant.
Your Legal Position at a Glance
Situation · What the law requires
Social housing — mould reported — Landlord must investigate within 10 working days
Social housing — serious hazard confirmed — Property made safe within 5 working days
Social housing — emergency hazard — Response within 24 hours
Private rented (from May 2026) — Landlord must meet Decent Homes Standard; Awaab's Law timelines to follow on phased basis
Any rental — landlord ignores report — Escalate to Housing Ombudsman (social) or local council / courts (private)
What to Do if You Have Mould in Your Home
Acting methodically protects both your health and your legal position. Report it in writing as soon as you notice it, keep records of everything, photograph the affected areas regularly, and do not let a landlord dismiss your concern as "lifestyle condensation" without proper investigation. Under current law, that response is insufficient.
See our full Tenant Guide to Mould and Damp for a step-by-step walkthrough of exactly what to do.
Finding Professional Help
Addressing mould properly — whether you are a tenant seeking an independent assessment or a landlord needing a qualified remediation contractor — requires professionals who understand both the technical and regulatory landscape.
Our directory lists verified mould and damp specialists across the UK, from surveyors who can produce HHSRS-compliant reports to contractors trained in professional remediation. Use it to find accredited help in your area.