If you search for landlord responsibility for damp and mould UK on Reddit, the working consensus across the big UK housing subreddits is surprisingly consistent: persistent damp and mould is the landlord's responsibility unless the tenant is demonstrably failing at the basics of heating, ventilating and cleaning the home. Reddit holds both sides to that test - tenants who admit they never open a window or use the radiators get pushback even in tenant-friendly subreddits, and landlords who cry "lifestyle" without fixing broken extractor fans get taken apart.
We went and read the threads properly - the real ones, linked below - across r/HousingUK, r/TenantsInTheUK, r/LegalAdviceUK and r/uklandlords. This article summarises what the crowd actually advises, where that advice is solid, and where an internet argument stops being useful and evidence has to take over. (We are not affiliated with Reddit; the threads linked here are simply real public discussions, quoted in summary.) For the legal position in full, our guide to Awaab's Law and private landlords covers the timescales and the coming private-sector extension.
The argument every thread turns on: condensation or disrepair?
Strip away the venting and almost every Reddit mould thread is the same dispute. The landlord says the mould is condensation caused by how the tenant lives: drying clothes indoors, not heating the property, keeping windows shut. The tenant says the mould is disrepair: no working extractor fan, single glazing, uninsulated cold walls, a leak nobody has traced. Whoever wins that framing wins the thread - and usually the real-world dispute too.
A typical example is a r/HousingUK thread asking "Mould in bedroom, who is at fault? Landlord or tenant", where a specialist found three overlapping causes: the room was under-heated, the bathroom extractor was inadequate, and the kitchen had no extractor at all - and the landlord then tried to bill the tenants £500 for the clean-up. The replies did not pile on either side; they probed whether the tenants were actually ventilating, and pointed at the missing extraction as the landlord's share. Real cases are genuinely mixed like this more often than either side admits.
Reddit also polices bad faith. When someone posted "Mould is the tenants fault, not the landlord" as a general claim, the thread was downvoted to zero and the top replies listed the structural causes - missing insulation, cheap extractor fans, cracks letting water into walls - that no amount of window-opening fixes.
What tenants say - and the scale of the frustration
The single biggest thread we found is on r/TenantsInTheUK: "Why do landlords act like living with mould is totally normal to live with in the UK?" - over 1,600 upvotes and more than 800 comments. The pattern inside it repeats across the site: tenants describe black mould and damp smells being waved away with "just open a window, it's normal in old houses", landlords reply that tenants will not ventilate because of heating costs, and in between people trade practical fixes like dehumidifiers and PIV units - with tenants noting the running costs land on them.
The more practical threads show how the crowd actually weighs responsibility. In "Is mould my responsibility or the landlord's?" - a ground-floor flat with a windowless bathroom and a weak extractor - the top answer was blunt: keep the place warm, ventilated and clean like any normal adult, and if mould still grows, it is the landlord's problem. And in a London case on r/LegalAdviceUK, "My landlord blames the mould problem on me", the most useful reply described winning a deposit dispute by citing the fitness-for-habitation duty - evidence and statute, not argument, carried it.
What landlords say to each other on r/uklandlords
The landlord subreddit is more self-aware than the stereotype suggests. When Awaab's Law enforcement made the news, the thread "Landlords face £7,000 fines from TODAY for damp and mould" filled not with outrage but with landlords saying they had spent years mitigating damp properly and that slum-standard landlords damage everyone - the top-voted anger was aimed at bad landlords and at councils' own housing stock, not at the rules.
The mirror-image thread is also instructive: a landlord ranting that tenants complain about mould but "won't take any responsibility" despite automatic extractors, a PIV unit and new guttering. The advice that rose to the top was not sympathy - it was a managing agent telling them to document everything by email with a dated timeline of works. Even on the landlord side, the crowd's answer is the paper trail.
Awaab's Law is now a fixture of these discussions. An explainer thread on r/HousingUK - "Awaab's Law will force landlords to respond to damp and mould complaints within 24 hours" - drew over a hundred upvotes, with the top comment correcting the headline: the law currently covers social housing, with the private-sector extension still to come. Reddit knows the law is phasing in; the recurring confusion is over who is covered when, which is exactly what our Awaab's Law guide for private landlords untangles.
The advice Reddit repeats in every thread
Read enough of these threads and the same escalation ladder appears every time, from both tenant and landlord commenters:
- Report the problem in writing and keep everything - photos with dates, emails, a timeline. Verbal complaints might as well not exist.
- Know the two statutes: Section 11 of the Landlord and Tenant Act 1985 (repair of structure and installations) and the Homes (Fitness for Human Habitation) Act 2018.
- If the landlord will not act, contact the council's environmental health team, who can inspect under the HHSRS and serve improvement notices.
- Shelter and Citizens Advice for guidance; the deposit protection scheme's free dispute service where mould costs are deducted from a deposit - tenants report winning these with a paper trail.
- For the mould itself: dehumidifiers and PIV units come up constantly as the practical middle ground while the cause gets argued over.
Where Reddit runs out - and what actually settles it
Here is the honest limit of the threads: Reddit can tell you the law and the tactics, but it cannot tell you what is causing the mould in your property. Every thread ends at the same wall - "it depends whether it's condensation or a building defect" - because nobody on the internet can take a moisture reading through the screen. The disputes that resolve are the ones where somebody stops arguing and gets the cause diagnosed and documented.
That is the gap we fill. Our free damp survey in London does exactly what the threads say is needed: moisture readings, a proper diagnosis of condensation versus leak versus rising or penetrating damp, and written findings you can put in front of a tenant, a landlord, an adjudicator or an environmental health officer. If treatment is needed, our mould removal team fixes the cause as well as the mould and documents the work - backed by our 12-month guarantee, across London and the South of England, with more than 8,500 jobs completed.
Whichever side of the argument you are on, the winning move is the same: stop debating, get it diagnosed in writing, get it fixed, keep the record.
If you need a hand, Simpled Services can help. Call us on 020 4571 7367, message us on WhatsApp at the same number (020 4571 7367), or email hello@simpledservices.co.uk and we will take it from there.