Damp and mould: the landlord duties changing across the UK — and what's already law

Damp and mould have moved from "maintenance issue" to statutory duty across the UK, in a wave of rules named for Awaab Ishak, the two-year-old who died in 2020 from exposure to mould in a socially rented flat. The changes land differently in each nation, and the dates matter — here is what is law now, what arrives in October 2026, and what is promised but not yet commenced. This is general information, not legal advice; the sources are named at the end and the review date matters.

England: social housing now, private sector pending

Awaab's Law has applied to social landlords in England since 27 October 2025: emergency hazards must be investigated and made safe within 24 hours; significant hazards — damp and mould are the named headline — must be investigated within 10 working days, with a written summary to the tenant within 3 further working days, and required works begun within set timescales. For private landlords in England, the same framework is enabled by the Renters' Rights Act 2025 but has not been commenced — no date has been confirmed, with legal commentary pointing to 2027 at the earliest. What binds private landlords today is older and broader than most assume: the repairing duty for structure and exterior (including gutters and downpipes — the machinery behind penetrating damp), the duty that homes be fit for human habitation (damp and mould expressly relevant), and council enforcement under the housing health and safety rating system, which carries improvement notices and civil penalties.

Scotland: the October 2026 moment

The Scottish Parliament has approved regulations bringing Awaab-style timescales into force from October 2026 — notably for both social and private rented housing. Landlords must investigate reports of damp and mould within 10 working days, give the tenant a written summary within 3 working days of completing it, and begin necessary repairs within 5 working days after that — unless delay is genuinely outside their control. Social landlords also face completion deadlines and compensation where qualifying repairs overrun; private tenants enforce through the Repairing Standard tribunal route instead. If you let property in Scotland, 2026 is the year to get reporting, investigation and paper-trail processes in order before the duties bite.

Wales and Northern Ireland, briefly

Wales' fitness-for-human-habitation requirements (in force since December 2022) already require rented homes to be free from serious damp and mould hazards, with enforceable timescales via the local authority. Northern Ireland has no equivalent statutory framework yet — the general fitness and repair duties apply — making it the laggard of the four nations.

What it means if you own, let, or rent

If you rent out: the diagnosis-first discipline matters more than ever — knowing condensation from penetrating damp decides whether the duty is advice and ventilation or a repair with a clock on it, and the evidence file (written reports, dated photos, response dates) is now half the compliance. If you're a tenant: report in writing, keep dated photos, note whether patches worsen after rain — that record is what the new timescales run on. If you own your home: no statutory deadlines, but the health logic is identical, and the prevention side — ventilation that actually works, and knowing which heaters make damp worse — is the same work either way.

Sources: Scottish Parliament SPICe briefing on dampness and mould duties (2026); UK Government guidance on Awaab's Law and the Renters' Rights Act 2025; Homes (Fitness for Human Habitation) Act 2018. Last reviewed September 2026 · general information, not legal advice — commencement dates move; check gov.uk and gov.scot before relying on any date.