Fix Homes, Save Lives: The £1Billion Win for the NHS
New peer-reviewed research suggests retrofitting British homes could save the NHS almost £1Billion every year. But new Local Government Association reporting reveals the health benefits of decarbonisation remain missing from major national cost calculations.
Every election, we hear some version of the same promise: we're going to fix the NHS.
But what if one of the fixes isn't in the NHS at all? What if it's behind the front doors of Britain's homes?
Last year, we highlighted a long-term research project examining the health benefits of housing improvements across the Liverpool City Region, as part of our Sparks of 2026 series.
The research, conducted by the University of Liverpool as part of the National Institute for Health and Care Research's PHIRST programme, set out to investigate something that ought to be central to the national conversation about housing, energy and public health.
What happens to people's health, and the demands placed on the NHS, when we improve the homes they live in?
Using data from 5,263 properties improved between 2021 and 2023, researchers modelled the effects of housing retrofit on emergency hospital admissions, including those associated with respiratory disease, cardiovascular conditions, falls and burns.
They also examined whether targeting improvements towards communities with the greatest health needs could deliver better outcomes without increasing the number of homes being retrofitted.
The findings, published in the Journal of Epidemiology & Community Health on 8 October 2026, deserve considerably more attention than they have received.
[Song H, Barr B, Head A, et alHealth impacts of housing retrofit programmes: a modelling analysis of targeting for health inequality reduction J Epidemiol Community Health Published Online First: 08 October 2026. doi: 10.1136/jech-2026-226675]
What They Found
The researchers estimated that improvements to just 5,263 homes across the Liverpool City Region could prevent 229 emergency hospital admissions every year, representing approximately £573,000 in annual NHS savings.
These are modelled estimates rather than observed reductions in admissions, but they are grounded in real housing improvement programmes and established research into the relationship between housing conditions and health.
And the findings didn't stop there.
By including local health needs when deciding which homes should receive improvements, the researchers calculated that a further 24 emergency admissions could be prevented annually, without increasing the number of properties improved.
In other words, the same number of retrofits could deliver greater health benefits simply by improving how they are targeted.
That alone should give local authorities, housing providers and healthcare commissioners something to think about.
But the researchers went further, modelling what these findings might mean if applied to England's ambition to improve five million homes.
The potential savings to the NHS were extraordinary.
£929 million every year.
And with better targeting, that figure could rise to approximately £958 million annually.
Almost a billion pounds a year in potential savings to the NHS, from improving the buildings in which people live.
Essential work which has a visible and public benefit, and doesn't require a new hospital to be commissioned and built, or more doctors recruited or even worse, yet another round of reorganisation
This comes from quite simply. Fixing homes.
The Billion-Pound Question
Of course, these are projections, not money already saved. The national figures are illustrative and depend on assumptions about how health benefits would scale across England.
But they raise a question that ought to be asked whenever politicians discuss the cost of improving Britain's housing stock.
If we know that poor housing contributes to ill health, why aren't the potential savings to the NHS a central part of the economic case for retrofit?
And that question becomes considerably more compelling when we examine another report, published just weeks after the Liverpool research.
Because while one group of researchers was putting a financial value on the potential health benefits of better homes, the Local Government Association was highlighting something conspicuously absent from major national decarbonisation cost estimates.
The savings to healthcare.
The Cost of Retrofit - And the Cost of Doing Nothing
Just weeks after the Liverpool research was published, the Local Government Association (LGA) released its Climate Duty Research Project, a substantial examination of the financial and practical challenges facing local authorities as they work towards Britain's climate commitments.
It's an important piece of work, not least because of the depth and breadth of the responses from councils and LGA members, who are already grappling with the realities of improving buildings, housing and infrastructure while balancing increasingly stretched public finances.
Rather than simply making the case for additional funding, the research helps establish the scale of the investment required, the responsibilities falling on local authorities and the practical barriers they face in delivering improvements.
And those responses deserve attention.
Local government is, after all, where many of the ambitions of national climate policy meet the practical realities of delivery. Councils have to consider housing conditions, public health, social care, local infrastructure and the needs of the communities they serve.
The LGA report identifies an estimated £83 billion of investment associated with decarbonising council-related assets, including approximately £15.5 billion to upgrade council-managed social housing.
These are substantial sums, and the research provides valuable evidence of the financial challenge facing the public sector.
But there is another side to this calculation.
The report references the Office for Budget Responsibility's estimate of £344 billion in net costs associated with the UK's wider transition to net zero, while acknowledging that this calculation does not include estimated savings arising from improved health.
That is a particularly important omission to recognise.
Because the PHIRST researchers have just provided an indication of how substantial one part of those health savings might be.
We now have two valuable pieces of research approaching the same challenge from different directions.
One helps establish what improving Britain's buildings could cost. The other begins to quantify what failing to improve them may continue to cost our health service.
Neither report provides the complete economic answer, and their figures cannot simply be added together or offset against one another.
But considered together, they strengthen the argument for looking beyond the upfront cost of retrofit and examining the wider public value of healthier, more efficient homes.
And perhaps most importantly, they suggest that housing, healthcare and climate policy should not be considered in isolation.