Awaab's Law and retrofit, fixing damp, mould and cold at source

Awaab's Law has changed what social landlords must do about damp and mould, and from November 2026 it reaches excess cold too. Most of the guidance out there covers the legal timescales. Far less of it addresses the harder question underneath: what is actually causing the damp, the mould and the cold, and how do you fix it at source rather than chase it property by property. For a lot of homes the answer sits in the building fabric and ventilation, which is retrofit territory.

What Awaab's Law requires

Awaab's Law is named after Awaab Ishak, the two year old who died in 2020 after prolonged exposure to mould in his home. Brought in through the Social Housing (Regulation) Act 2023, it places legally enforceable timescales on social landlords in England to investigate and put right serious hazards.

Phase 1 came into force on 27 October 2025 and covers emergency hazards and damp and mould that present a significant risk of harm. In broad terms landlords must investigate a reported hazard within a set number of working days, put their findings in writing shortly after, make the home safe quickly where a significant risk is confirmed, and begin any longer repairs within 12 weeks. Emergency hazards must be acted on within 24 hours.

The scope then widens. From 30 November 2026, Phase 2 extends the same kind of duties to a broader set of Housing Health and Safety Rating System hazards, including excess cold, excess heat, falls, structural collapse, fire and electrical safety. A further phase in 2027 brings in almost all remaining hazards apart from overcrowding. In short, the direction of travel is clear and it is quickly moving towards the things a warm, dry, well-ventilated home is meant to prevent.

It is a building problem, not a lifestyle one

The single most useful reframing came from the Housing Ombudsman. Its landmark report, pointedly titled "it's not lifestyle", found that landlords too often blamed condensation on tenant behaviour instead of investigating the underlying cause, and it called for a shift from reacting case by case to tackling the problem proactively.

That matters for retrofit, because the underlying causes it identifies are structural. Damp and mould are usually driven by cold surfaces, poor insulation, thermal bridging, air leakage and inadequate ventilation. The government's own Awaab's Law guidance makes the link explicit, listing a lack of thermal insulation that leads to excessive mould growth as exactly the sort of deficiency the law is concerned with. Improve the fabric and the ventilation and you remove the conditions mould needs, rather than repainting over it and waiting for it to return.

How a whole-house approach tackles the root causes

This is where a PAS 2035 approach earns its place, because it treats the property as a system rather than a list of separate repairs. Our PAS 2035 retrofit services follow that whole-house logic from the first survey to the final certificate.

It starts with diagnosis. A proper retrofit assessment establishes the condition of the home, its thermal performance and its ventilation, and flags the risk of damp and condensation before any work is specified. Add a thermal imaging survey and you can see where heat is escaping and where moisture is present, including cold spots and hidden damp that are invisible to the naked eye. Together they turn a vague damp complaint into a clear picture of what is actually wrong.

From there the fix is designed in, not bolted on. Fabric improvements raise surface temperatures so condensation has nowhere to form, and controlled ventilation carries moisture away. The two have to be balanced, which is the whole point of designing the measures together rather than in isolation.

The warning few people give: bad retrofit can make damp worse

Here is the part that rarely gets said out loud. Retrofit done carelessly can cause the very problem it is supposed to cure. Add insulation and tighten a home up without sorting the ventilation, and you can trap moisture inside, drive up condensation and create mould where there was none before. A measure fitted in isolation can undo the benefit of everything around it.

Avoiding that is precisely what the whole-house method is for. A qualified retrofit design reviews how fabric, heating and ventilation interact and designs out the risks of damp, condensation and overheating before work starts. Air permeability testing checks that airtightness is balanced with adequate ventilation rather than pushed too far. And where sub-floor moisture and cold draughts are the issue, AirEx smart ventilation manages moisture beneath suspended timber floors without the constant heat loss of a fixed air brick. Compliance with Awaab's Law is not just about acting fast, it is about acting correctly.

From reactive to proactive

The Ombudsman asked landlords to move from reacting to being proactive, and that is easier when you understand your stock. Thermal imaging and consistent stock EPC assessments let asset teams find the coldest, dampest and worst performing homes first, so investment goes where the Awaab's Law risk is highest rather than waiting for the next complaint. With excess cold entering scope in November 2026, that stock-level view stops being a nice to have and starts being a way to get ahead of the law.

Frequently asked questions

Does Awaab's Law cover damp caused by the building rather than the tenant? Yes. Awaab's Law concerns hazards arising from deficiencies the landlord is responsible for, and government guidance specifically includes a lack of thermal insulation that leads to excessive mould growth. The Housing Ombudsman has been clear that damp and mould are usually not a lifestyle issue.

Is excess cold covered by Awaab's Law? From 30 November 2026, Phase 2 extends the law to a wider set of hazards including excess cold, so poor thermal performance moves firmly into scope.

Can retrofit help social landlords meet Awaab's Law? Yes. Improving the fabric and ventilation of a home removes the conditions that cause damp, mould and excess cold, which addresses the hazards at source rather than treating the symptoms.

Can retrofit cause damp and mould? It can, if done badly. Adding insulation or airtightness without adequate ventilation can trap moisture and cause condensation. A whole-house PAS 2035 approach is designed to prevent this by balancing the measures together.

Does Awaab's Law apply outside England? Phase 1 applies to social housing in England. Scotland is introducing its own equivalent, and the government intends to extend similar duties to the private rented sector. We deliver retrofit across England, Wales and Scotland.

Getting ahead of it

Awaab's Law is not going to get less demanding, and with excess cold arriving in November 2026 the fabric of your homes is squarely in scope. If you want to tackle damp, mould and cold at source across your stock, we can assess, design and deliver it under one accountable contract. Explore our PAS 2035 retrofit services or get in touch to talk it through.