A tenant in a Rochdale flat reported black mould on a bedroom wall in October 2025 and had a repair date confirmed within the week — not because the landlord was unusually diligent, but because the clock now runs automatically. That is the practical effect of Awaab's Law, and it is the single biggest shift in how damp and mould complaints get handled in England since the Housing Health and Safety Rating System arrived two decades ago. Landlords who still treat a mouldy bathroom as a maintenance backlog item, to be scheduled whenever a contractor is free, are about to find that approach expensive.
What Awaab's Law actually requires
The law is named after Awaab Ishak, a two-year-old who died in December 2020 from prolonged exposure to mould in a housing association flat in Rochdale. The coroner's verdict — and the public reaction to it — pushed damp and mould from a routine repairs category into something regulators now treat as a safety failure. The Social Housing (Regulation) Act 2023 gave the Secretary of State power to set fixed legal timescales for investigating and fixing hazards, and the first phase of those timescales took effect on 27 October 2025.
Under Phase 1, a social landlord who receives a written complaint about damp, mould, or an emergency hazard has 10 working days to investigate and provide the tenant with a written summary of findings. If that investigation turns up what the regulations call a "significant hazard," repair work has to start within 5 working days of the report being issued, and where the hazard makes the property unsafe to occupy, the landlord must offer suitable alternative accommodation while the work is carried out. Emergency hazards — a categorisation that includes things like a collapsed ceiling from water ingress, not just visible spotting on a windowsill — carry a much tighter obligation: the landlord has to take "prompt action" to remove the danger within 24 hours of being told about it. None of this is guidance. It's a statutory duty enforceable through the courts, and the Regulator of Social Housing has already signalled it will treat repeated breaches as grounds for a formal notice against the landlord.
Why "significant hazard" is doing the heavy lifting
The whole framework hinges on the Housing Health and Safety Rating System, or HHSRS, which scores 29 categories of housing hazard by likely harm and likelihood of occurrence. Damp and mould sits in there alongside excess cold, fire risk, and falls — and a hazard only becomes "significant" under Awaab's Law if it would score as Category 1 or a high Category 2 under HHSRS methodology. That distinction matters because it stops the law being triggered by every damp patch a tenant photographs and emails in. A landlord genuinely can push back on a report that turns out, on inspection, to be condensation from an unvented tumble dryer rather than rising damp from a failed damp-proof course — but only if the inspection actually happens within the 10-day window and the reasoning is documented. Skip the inspection, or do it late, and the statutory clock keeps running regardless of what the underlying cause turns out to be.
How this lands on the private rented sector
Phase 1 of Awaab's Law applies to social housing only — but that is very deliberately a starting point, not the destination. The Renters' Rights Act, which received Royal Assent in 2025 and has been rolling out its abolition of Section 21 and its new periodic-tenancy defaults through this year, contains the legal mechanism to extend Awaab's Law-style timescales to private landlords once the government is satisfied the social sector rollout has bedded in. MHCLG has been explicit in consultation documents that private tenants living with damp and mould "deserve the same protection," and the direction of travel is not really in dispute among landlord bodies — the argument now is about implementation date and whether the private-sector timescales should mirror the social ones exactly or allow slightly longer windows given the sector's more fragmented ownership structure.
What that means practically for a private landlord right now: you are not yet bound by the 10-day/5-day/24-hour clock, but you are one statutory instrument away from being bound by it, and the evidence base being built during Phase 1 — Ombudsman decisions, court cases, HHSRS assessments — is the material that will shape how strictly the private-sector version gets enforced. Landlords who wait until the law actually applies to them before improving their damp response process will be adopting new procedures under time pressure, with tenants and letting agents who already know what "should" happen because they've read about the social housing rules. That's a bad position to negotiate from, and it's also avoidable.
What compliance actually costs
A proper damp and mould survey — not a five-minute look with a moisture meter, but a full report distinguishing condensation, penetrating damp, and rising damp with recommendations — typically runs £250 to £450 for a standard two- or three-bedroom property in England, more in London. Where the survey identifies a failed damp-proof course or bridging (external ground level built up above the DPC, a startlingly common cause in older terraced stock), remedial work including re-plastering a affected wall runs anywhere from £800 for a single wall to £4,000-plus if a full chemical DPC injection and replastering job is needed across a ground floor. Mould remediation alone — professional treatment, not a tenant scrubbing with bleach, which the NHS and most environmental health officers now advise against as a standalone fix — costs £300 to £900 depending on the extent of the affected area and whether HEPA-filtered extraction is used. Ventilation is often the cheaper and more durable fix, and it's the one landlords underinvest in. A humidistat-controlled extractor fan retrofitted into a bathroom with no working ventilation costs £150 to £350 fitted; a positive input ventilation unit for a whole flat, which pushes filtered air in from the loft space to dilute humidity throughout, runs £600 to £1,200 installed. Compare that to the alternative — a tenant complaint that escalates to the Housing Ombudsman, or a rent repayment order if the property turns out to be unfit for habitation under the Homes (Fitness for Human Habitation) Act 2018 — and the ventilation spend looks like the obviously sensible choice, not a nice-to-have.
Where landlords get the timeline wrong
The most common mistake isn't refusing to act — it's acting on the wrong schedule. A landlord who books a routine inspection for "next available slot" three weeks out, because that's how the letting agent has always scheduled non-urgent repairs, is treating a damp report like a dripping tap. Under Awaab's Law that gap alone is a breach, regardless of what the inspection eventually finds. The fix isn't complicated: any damp, mould, or hazard report needs to be triaged the day it arrives, logged with a date stamp, and routed to whoever can attend within the statutory window — even if that means paying a call-out premium to a surveyor or contractor who can fit in a faster visit. Landlords running larger portfolios are increasingly keeping a shortlist of two or three local damp specialists specifically so they're never stuck waiting on one contractor's diary.
What happens if a landlord misses the deadline
For social tenants, the first port of call is the Housing Ombudsman Service, which can order a landlord to carry out repairs, pay compensation, and — increasingly — publish "learning from severe maladministration" findings that name the landlord directly. Several housing associations have already had adverse Ombudsman rulings published since October 2025, and the reputational cost has turned out to matter as much to boards as the compensation figures themselves, which typically range from a few hundred pounds for delay and distress up to several thousand where a family had to be decanted.
Private tenants don't yet have an equivalent statutory Awaab's Law route, but they are not without leverage. A tenant can apply to the First-tier Tribunal for a rent repayment order under the Housing and Planning Act 2016 where a landlord has failed to address a Category 1 hazard, and local authority environmental health teams retain powers under the Housing Act 2004 to serve an improvement notice or, in serious cases, a prohibition order that stops the property being let at all until works are done. Councils have been noticeably more willing to use these powers since the Awaab Ishak case became a reference point in local authority training — several London boroughs have reported a rise in improvement notices served specifically for damp and mould since late 2025, separate from and ahead of any formal Awaab's Law extension to the private sector.
How letting agents are already adjusting
Agents managing portfolios across both social and private stock have started applying the social-sector timescales voluntarily to their private landlord clients, partly as a hedge against the coming legislation and partly because it's proving to be a genuine selling point to prospective tenants comparing agencies. Several regional agents now advertise a "10-day damp response guarantee" in their marketing, well ahead of any legal requirement to do so. Whether that becomes standard practice across the sector or stays a differentiator for the more proactive agencies is still an open question — but landlords instructing an agent this year would do well to ask directly what the agent's actual damp and mould triage process looks like, rather than assuming "we handle repairs promptly" covers it.
The properties most exposed here are pre-1919 solid-wall terraces without a damp-proof course by design, and post-war system-built flats with historically poor ventilation — both categories are heavily represented in the private rented stock in northern England, exactly the region where the Awaab Ishak case originated. Landlords holding that kind of stock have the clearest financial incentive to get ahead of the survey-and-ventilate cycle now, before the statutory clock starts running against them too.