Damp and mould complaints from tenants used to be a routine maintenance ticket. In 2026 they are a legal pressure point: a mishandled mould complaint can become an HHSRS Category 1 hazard, an Awaab’s Law breach (currently statutory for social landlords and not yet extended to the PRS — a power to do so exists under the Renters’ Rights Act 2025), a Decent Homes Standard failure, a Section 11 disrepair claim, a rent reduction at the First-tier Tribunal, and the basis for a Rent Repayment Order.
This guide is the operational landlord response — what to do in the first 24 hours, the first 7 days, the first 14 days. It is not a guide to the Awaab’s Law statutory regime itself; for that, see Awaab’s Law for landlords 2026.
Your statutory duties at a glance
Step 1: First 24 hours — acknowledge and book the inspection
Whatever you do, do not ignore a written complaint. Every email, text or letter mentioning "damp", "mould", "wet wall", "black spots" or "condensation" should be treated as a legal trigger.
Within 24 hours:
Why this matters: the date the complaint was received and the date the inspection was booked is the first thing any tribunal, ombudsman or enforcement officer asks for. A 24-hour written acknowledgement is the cheapest insurance you can buy.
Step 2: First 7 days — the inspection visit
A competent inspection covers six things:
Take photographs of all six. Categorise the cause in writing at the inspection. The cause drives the remediation, and drives whether liability sits with you (penetrating / rising) or with the occupant (lifestyle condensation), or jointly (poor ventilation in a bathroom is yours; not opening the window is theirs).
Step 3: Risk-rating the hazard (HHSRS in plain English)
The HHSRS scoring system is what local authority Environmental Health Officers use. You don’t need to be one to think like one.
Category 1 (mandatory enforcement) factors:
Category 2 (discretionary):
If you are looking at Category 1 indicators — do not wait. Move to Step 4 immediately.
Step 4: First 14 days — remediation and re-inspection
Awaab’s Law (in force for social landlords from 27 October 2025; PRS extension still to come via RRA regulations) prescribes, for a significant damp or mould hazard:
For PRS landlords, even before the regulations bite, treating these as the operational standard is what defends you against a disrepair claim or a council improvement notice.
Remediation matrix:
Whatever the cause — re-inspect after remediation (a fortnight is a sensible self-imposed check) and document.
Step 5: Communications and documentation
The single biggest defence against an Ombudsman complaint or RRO is a dated paper trail. Every interaction goes in writing.
Minimum documents to keep:
LetCompliance keeps these as a single timeline against the property. When the Ombudsman asks for "all communications relating to the damp complaint of [date]", you export one PDF.
Common mistakes that turn a fix into a fine
What it costs you to get this wrong (2026)
What it costs you to get this right
In every case the fix is dramatically cheaper than the enforcement consequence.
How LetCompliance helps
Start free, no card needed — the next damp email lands in a structured workflow, not your personal inbox.
Where to go next
2026 UK Landlord Compliance Cheat Sheet
Every Gas Safety, EICR, EPC, deposit and Right to Rent deadline on one printable A4 page. Updated for the Renters’ Rights Act 2025.
- Every UK statutory deadline by document type
- Maximum penalty per breach (HSE, MEES, RtR, deposit)
- What blocks a Section 8 / Form 6A possession claim
- Print-friendly A4 with checkboxes
Frequently asked questions
Who is responsible for damp and mould in a rented property in England?
The landlord is responsible for damp and mould caused by structural or installation defects (penetrating damp, rising damp, failed roof, broken DPC, inadequate ventilation provision) under Section 11 LTA 1985 and the Homes (Fitness for Human Habitation) Act 2018. The tenant is responsible for the lifestyle factors that contribute to condensation (drying clothes indoors, never opening windows). In practice the landlord must provide adequate ventilation (extractor fans, trickle vents) and the tenant must use it.
How quickly must a landlord respond to a damp complaint in 2026?
Awaab’s Law, in force for social landlords since 27 October 2025, prescribes for a significant damp or mould hazard: investigate within 10 working days, written summary to the tenant within 3 working days of the investigation, and make the home safe within 5 working days of the investigation — with 24 hours for emergency hazards. The private-sector extension is expected via regulations under the Renters’ Rights Act 2025 but is not yet in force, so for now these are the sensible operational standard to adopt rather than a binding duty on a private landlord.
Can a tenant withhold rent for damp and mould?
No. Rent withholding is rarely lawful and creates a Section 8 ground 8 / 10 / 11 risk for the tenant. The tenant’s correct routes are (a) request repairs in writing, (b) escalate to the local authority Environmental Health team (HHSRS inspection), (c) escalate to the Housing Ombudsman (PRS, post-RRA), or (d) bring a disrepair claim under Section 11 LTA 1985 with damages.
Is condensation the tenant’s fault?
Not solely. The Housing Ombudsman has consistently held that the landlord must provide adequate ventilation (working extractor fans, trickle vents, thermally comfortable heating). Even where lifestyle is a contributory factor, blaming the tenant without an inspection is the second-most cited Ombudsman complaint finding. Always inspect first; provide ventilation guidance second; never blame without evidence.
What is HHSRS Category 1 for damp and mould?
A Category 1 hazard is one assessed (under the HHSRS scoring system) as posing a serious risk to occupant health. Indicators for damp and mould include visible black mould over ≈0.5 m², mould in sleeping rooms or behind furniture, vulnerable occupants (under 14, over 65, asthmatic), and persistence over 3 months. Category 1 triggers mandatory enforcement by the local authority — typically an Improvement Notice.