The top-up is part of the 10-year housebuilding programme already funded — and takes total capital investment past £40bn
Chancellor John Healey’s decision to commit an additional £1.5 billion to social and affordable housing in his first Autumn Budget has been welcomed by the mortgage and property industry. But experts are united in warning that funding alone will not resolve a supply crisis that is running well ahead of any government response.
The announcement, made on 28 October, is expected to support the construction of around 10,000 homes in England, with priority given to social rent and council housing. This takes the total investment past £40 billion over 10 years.
Healey also confirmed that smaller residential brownfield schemes of up to 1.5 hectares would be exempt from biodiversity net gain requirements, and that land sold to registered social housing providers would benefit from a zero-rated VAT relief from April 2027.
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Policy welcomed, but the real test lies ahead
For the mortgage and property industry, the immediate question is not whether the pledge is genuine but whether it is sufficient. Set against the Office for Budget Responsibility's (OBR) own assessment that the government faces a shortfall of around 120,000 homes per year against its 1.5 million target, it amounts to less than one month’s worth of the annual supply gap.
Andy Morrison, director of UK Property Development, acknowledged the investment while questioning its scale. “The additional £1.5bn for social and affordable housing is a welcome commitment, but the real test will be whether it translates into homes on the ground,” he said. “Funding is only one part of the equation, and developers continue to face considerable challenges around planning delays, construction costs and the financial viability of bringing new sites forward. The proposed changes to brownfield development are a positive step, but the Government must go further in removing the obstacles that prevent housebuilding at scale.”
The proposed brownfield changes were also among the more practical measures in the Budget for developers and their lenders. Removing a regulatory layer from smaller urban sites reduces upfront costs and shortens timelines. But the 1.5-hectare threshold limits the exemption to relatively modest schemes, leaving larger and more complex urban regeneration projects unchanged.
For brokers advising on development finance or housing association funding, that uncertainty has practical consequences: until the guidance arrives, some deal structures remain in limbo.
Adam Morris, founder of LandSale, said the brownfield measures reflected the right instinct but fell short of the ambition the market needs. “The proposed relaxation of brownfield development requirements is a step in the right direction, but we need to see a far more ambitious approach to unlocking land across the country,” he said.
Were homebuilders left behind?
The sharpest criticism came from those closest to the delivery end of the pipeline. Felicity Barnett, new build and affordable housing partnerships manager at The Mortgage Brain, went to the heart of what was missing.
“What was missing in today’s Budget was support for the people who have to build these homes,” Barnett said. “It’s more expensive than ever to build, which is why so many sites are weighted towards larger three-, four-, and five-bed homes to make the land viable. If we want more homes suited to first-time buyers, planning and local authorities need to work with housebuilders, as changing the mix on a site can send it straight back into planning. With planning approvals down 8% in Q1, there was a real opportunity today to speed things up, and it hasn’t been taken.”
Barnett’s comments point to a structural tension of the government’s housing agenda: the homes most needed — smaller, affordable units accessible to first-time buyers — are also the least commercially viable for developers to build under current conditions.
The Home Builders Federation noted that housebuilders continue to face worsening viability challenges due to rising cumulative policy costs, the incoming Building Safety Levy, significant pressures associated with Section 106 affordable housing requirements, and persistent planning delays.
For Anthony Curtis of FORTO Finance, the problem was already visible in the behaviour of major developers: "Developers are ramping down their building in the south of England. It's too expensive to build. While the government has brought back Help to Buy, there need to be new homes to buy. At this point, Your First Home is just Sturm und Drang, with no real action to stimulate the property industry."
What brokers need to know on affordable housing funding
For mortgage advisers, the Budget’s affordable housing measures carry practical implications that extend beyond headline figures and will not arrive quickly.
In the near term, brokers advising first-time buyers should be aware that the supply constraints underpinning the Your First Home scheme are unlikely to ease meaningfully before the scheme’s 2027 launch.
The key question for brokers and funders backing development clients is whether the machinery of planning, infrastructure and viability can finally catch up — turning political ambition into actual homes and promises of a housebuilding bounce into a pipeline brokers can bank.
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