While some headline-grabbing reforms have not materialised, several important announcements will influence homeowners, landlords, and renters.
Here are the main points of the 2025 Budget concerning the housing market:
The High Value Council Tax Surcharge (HVCTS)
Being referred to as the ‘Mansion Tax’, from April 2028 homes valued at over £2 million will incur a new annual surcharge for homeowners which will be collected alongside council tax.
The HVCTS will operate across four value bands:
- £2m–£2.5m: £2,500
- £2.5m–£3.5m: £3,500
- £3.5m–£5m: £5,000
- £5m+: £7,500
This will impact fewer than 1% of properties in England, roughly 100,000 homes, with the majority being in London and the South East.
The Valuation Office will conduct a targeted valuation exercise to identify qualifying properties, with revaluations every five years to determine the appropriate surcharge band. Charges will then increase in line with CPI inflation from 2029–30 onwards.
The government plans to consult in the new year on detailed implementation, including support for homeowners who may struggle to pay the charge.
This policy is estimated to generate £0.4 billion in 2029–30.
Rental Income Tax increase for private landlords
From April 2027, income tax on rental earnings will rise by 2 percentage points, taking rates to:
- 22% (basic)
- 42% (higher)
- 47% (additional)
While the government pulled back from adding National Insurance contributions to rental income, these increases still represent a meaningful drop in net returns for many landlords.
According to the OBR’s report (page 93) likely market consequences are:
“This successive eroding of private landlord returns will likely reduce the supply of rental property over the longer run. This risks a steady long-term rise in rents if demand outstrips supply.”
A £48 Million push to strengthen planning capacity
The government has announced funding of £48 million to recruit 350 additional planners.
Local authorities have long struggled with under-resourced planning departments, a key driver of delays in housing delivery. More capacity could mean:
- Faster decision-making
- Reduced bottlenecks for developers and housing associations
- Increased confidence in long-term build plans
Rent convergence update
The government also reaffirmed its commitment to rent convergence but has delayed the decision until January 2026, ahead of the Social and Affordable Homes Plan bidding window.
Furthermore it confirmed the 10-year rent settlement (2026 - 2036), allowing social housing rents to rise by CPI+1% per year, giving providers long-term certainty while they prepare for future changes.
Consultation on VAT reform for social housing land development
The government has confirmed it will consult on reforming VAT rules to encourage the development of land destined for social housing.
This consultation represents a potential long-term benefit to the sector, especially for regeneration and large mixed-tenure programmes.
No change to Stamp Duty
Despite some rumours, stamp duty remains unchanged.
This means continued pressure in the markets as the Stamp Duty thresholds have lagged behind rising house prices - particularly southern England.
Government Support for the DLR Extension to Thamesmead
Finally, the government reaffirmed support for the DLR extension to Thamesmead, with long-term government contribution alongside borrowing by TfL and the GLA.
Treasury endorsement allows TfL to advance work on the Transport and Works Act order, which is expected for submission at the end of 2026, and to procure a contractor to develop the detailed design and scope, including tunnelling. Subject to approvals and procurement, construction could begin in the early 2030s.
This commitment to improve the area's transport links is significant for local residential communities, such as Peabody’s Southmere.
The Lifetime ISA may be scapped
The government is planning to consult on Lifetime ISA reform in early 2026. The consultation is expected to lead to the LISA being replaced with a new, simplified ISA specifically aimed at supporting homebuyers.
This marks a shift away from the original dual-purpose design of the LISA, which was intended to support both retirement savings and first-time buyers.
While the government has stated that the new product will take the place of the LISA once available, details about how existing account holders will be affected have not yet been confirmed
Key takeaways from the Autumn Budget 2025
The 2025 Autumn Budget brings a mix of stability and targeted change for the housing market:
- High Value Council Tax Surcharge (HVCTS): Homes worth £2m+ will pay an annual surcharge from April 2028, affecting fewer than 1% of properties, mainly in London and the South East.
- Landlord tax increases: Rental income tax rises by 2% from April 2027, potentially reducing rental supply and increasing pressure on rents.
- Planning capacity boost: £48 million to recruit 350 extra planners.
- Rent convergence delayed: Decision now expected in January 2026.
- Social housing support: Government consultation on VAT reforms may incentivise development of social housing land.
- Infrastructure investment: Support confirmed for the DLR extension to Thamesmead.
