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Damp and mould: a social landlord's action plan

How to respond to damp and mould the way the regulator and the Housing Ombudsman now expect — the HHSRS hazard, the Awaab's Law timescales, investigating the real cause, recording the evidence, and stopping it coming back.

Updated October 2026 · by the SupportedHousingOS team

Damp and mould as an HHSRS hazard

Damp and mould is one of the hazards assessed under the Housing Health and Safety Rating System (HHSRS), the method councils use to judge how dangerous a condition in a home is. Following the death of Awaab Ishak and the regulator's response, the long-standing habit of blaming "lifestyle" or condensation has been firmly rejected: landlords are expected to take reports seriously, investigate, and act — not tell tenants to open a window.

Where Awaab's Law fits

Awaab's Law puts enforceable time limits on responding to hazards like damp and mould once they're reported. In the first phase the duties cover damp and mould and emergency hazards, with set periods to investigate, to give the tenant a written summary, and to begin repairs — and 24 hours to make safe anything posing a significant and imminent risk.

The full timescales are in our dedicated guide. See Awaab's Law explained for the investigate, written-summary, repair and emergency deadlines, and the phased rollout. This is general guidance, not legal advice — check GOV.UK for current requirements.

The action plan, step by step

  1. Log the report immediately — date, who reported it, which home, and start the Awaab's Law clock.
  2. Triage for risk — is anyone vulnerable (a child, someone with a respiratory condition)? Is it an emergency needing 24-hour action?
  3. Inspect and investigate within the statutory window — find the extent and, crucially, the cause.
  4. Send the tenant a written summary of what you found and what you'll do, within the required time.
  5. Carry out the work — treat the mould and fix the cause, beginning within the statutory period.
  6. Follow up — check it hasn't returned, and keep the home on review.

Don't just treat the symptom

Wiping mould away and repainting without finding the cause is the single biggest reason cases recur and complaints succeed. The underlying driver is usually one of: a building fault (penetrating or rising damp, a leak, failed seals), inadequate ventilation, or a heating/insulation problem that lets surfaces get cold enough to condense. A proper investigation names the cause and the remedy — and that record is what protects you later.

The evidence to keep

  • The original report, dated, and every deadline it triggered.
  • Inspection findings, the identified cause, and photos before and after.
  • The written summary sent to the tenant.
  • When work started and finished, and the follow-up check.
  • Every communication with the tenant.

This is exactly the trail the Housing Ombudsman looks for — and the part a spreadsheet can't reconstruct months later.

Start the clock the moment it's reported

SupportedHousingOS logs each damp and mould report, starts the Awaab's Law timers, tracks the investigate, summary and fix deadlines, and holds the photos, cause and full communication trail against the property — so the response is defensible at a complaint or inspection.

Common questions

Is damp and mould always the landlord's responsibility?
Landlords are responsible for investigating reports and addressing hazards. Blaming tenant "lifestyle" without a proper investigation is no longer acceptable; even where behaviour contributes, the landlord must still assess and act on the hazard.
How quickly must I respond to damp and mould?
Under Awaab's Law's first phase there are set periods to investigate, to send a written summary, and to begin repairs, with 24 hours to make safe emergencies. See our Awaab's Law guide for the specific timescales.
What is the HHSRS?
The Housing Health and Safety Rating System is the risk-assessment method used to judge how serious a hazard in a home is, including damp and mould.
How do I stop mould coming back?
Find and fix the underlying cause — a building fault, poor ventilation, or a heating/insulation issue — rather than only cleaning the surface, and keep the property on follow-up.

This guide is for general information only and does not constitute legal advice. Regulations change and are introduced in phases — verify the current requirements on GOV.UK and seek professional advice before acting.