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Rightmove Asks Government To Carefully Consider Property Tax Changes

Sviatlana Zyhmantovich / iStock / 1699081966

The UK’s largest property platform Rightmove is asking the government to carefully consider the impact of any changes to property taxation to avoid unintended consequences which would risk stalling parts of the market.

Key data

National property tax

  • Just under a third (30%) of homes for sale in England are priced at over £500,000, and would be subject to the proposed new annual property tax which would replace stamp duty

  • In London, more than half of homes (59%) have an asking price of over £500,000 and would be subject to the rumoured annual property tax if it came in, versus just 8% in the North East

  • A fifth (19%) of agreed property sales so far this year in England have been for homes over £500,000 but this varies regionally:

    • In London, more than half (52%) of agreed property sales so far this year have been over £500,000

    • In the North East, just 4% of agreed property sales have been for homes over £500,000 so far this year

  • The average asking price for a home in Great Britain is £368,740:

    • The average asking price for a home in London is £666,983

    • In the South East, the average asking price for a home is £479,634

    • In the North East, the average asking price for a home is £194,799

Mansion Tax

  • Just over 1% of all home sales agreed this year have been for properties over £1.5 million, and would be subject to the potential new capital gain ‘mansion tax’ if it came into effect. However, the regional impact is varied:

    • In London, one in ten (11%) of homes for sale are in this price bracket, with 5% of agreed sales so far this year being for homes above £1.5 million

    • In the South West, 0.7% of agreed sales are in the £1.5 million price band, with 2% of available homes for sale in this price bracket

    • In the North East, just 0.1% of agreed sales are in this upper-end bracket, with only 0.5% of all properties available for sale priced at over £1.5 million

What could the impact on first-time buyers be?

Johan Svanstrom, Rightmove’s CEO says: “We would like any changes to current property taxes to put affordability and mobility first. It’s already hard for first-time buyers to save up their deposit to get onto the ladder, and many must fund a large stamp duty payment too. According to our data, around a third of all sales currently going through the legal system are for typical first-time buyer properties, so it’s a big part of the market which supports the wider ecosystem. Affordability is very stretched and so putting the tax burden onto the seller could be beneficial for first-time buyers, however the saving could be wiped out if sellers simply build some of the charge into a higher asking price.”

How could the mass-market be affected by the potential changes?

Johan Svanstrom, Rightmove’s CEO says: “If the responsibility for property taxes shifts onto the sellers’ side, the government will need to really think through how this transition will be phased in to avoid slowing down the mass market. Those who have recently paid stamp duty as a buyer and would face paying property tax as a seller in the future would clearly be at a disadvantage. As we’ve seen around moments such as stamp duty changes, we could see some distortion in the market for properties at or close to the £500,000 mark if this does end up being the threshold, with movers at this price range understandably keen to avoid the new tax if they can.”

How could the top-end of the market be affected?

Johan Svanstrom, Rightmove’s CEO says: We need to make it easier and more attractive for those at the top of the market to consider downsizing if they are in a position to do so. There is no real incentive for someone in a large home to downsize to a smaller one unless they truly need to and can still afford the stamp duty bill. The current rumours to stamp duty changes would only seem to exacerbate this, as it may deter some at the top of the market from moving if they would then face a new annual tax.

“As our real time data shows, a proposed mansion tax would only affect a small proportion of the market. However, the government needs to be cautious over the cumulative effect of taxation on higher priced areas of the country as it simply risks stalling this part of the market, since the importance of mobility for people and the overall economy is strong in those areas too. A slower market can affect all types of movers, from first-time buyers to key workers and families, even if a tax is aimed at higher value properties.”

What about the impact on renters?

Johan Svanstrom, Rightmove’s CEO says: “If under the rumoured proposals, buyers no longer pay added property taxes, it could make the transition from renter to first-time buyer a little easier. Five years on from the pandemic, rents have seen a 44% increase and average supply is 26% less, so renter access and affordability is very stretched. The rumoured stamp duty changes don’t appear to apply to buy-to-let properties, so we wouldn’t expect any immediate impact on landlord supply, although they face many other tax pressures adding to the concerns of adequate supply going forward in the market.”

Concluding thoughts

Johan Svanstrom, Rightmove’s CEO says: “It’s encouraging that changes to stamp duty are being considered as there are many ways the current system can be improved or made fairer. Under this week’s rumoured proposals, there would appear to be some benefits to first-time buyers, but more consideration needed for the mass-market caught between two systems, and downsizers. The key question is whether these changes would actually generate more income for the government. It depends on the designs of reforms for taxes and fees, as well as the rates, but if they reduce mobility through these changes, they risk having the opposite effect and losing out in the long run.”

Rightmove Data

Regional proportions of homes for sale over £500,000

RegionProportion of homes for sale that are over £500,000
East Midlands14%
East of England29%
England30%
London59%
North East8%
North West15%
South East39%
South West28%
West Midlands18%
Yorkshire and The Humber13%

Proportion of homes for sale over £1.5 million by region

RegionProportion of homes for sale over £1.5 million
London10.9%
Average outside of London1.6%
England3.5%
South East4.4%
East of England2.3%
South West2.2%
North West1.1%
West Midlands1.0%
Yorkshire and The Humber0.7%
East Midlands0.6%
North East0.5%

Current average stamp duty charges by region 

RegionAverage asking price August 2025Stamp duty paid by a home-mover based on average asking priceStamp duty paid by a first-time buyer based on average asking price
East Midlands£291,440£4,572£0
East of England£420,729£11,037£6,037
London£666,983£23,350£23,350
North East£194,799£1,396£0
North West£268,393£3,420£0
South East£479,634£13,982£8,982
South West£380,492£9,025£4,025
West Midlands£295,863£4,794£0
Yorkshire and the Humber£253,762£2,689£0

Proportion of transactions agreed over £500,000

RegionProportion of transactions agreed over £500,000
London52%
South East29%
East of England21%
England19%
South West17%
West Midlands9%
East Midlands7%
North West7%
Yorkshire and The Humber7%
North East4%

Proportion of transactions agreed over £1,500,000

RegionProportion of transactions agreed over £1,500,000
London5.2%
South East1.7%
England1.2%
East of England0.9%
South West0.7%
West Midlands0.3%
East Midlands0.2%
North West0.2%
Yorkshire and The Humber0.2%
North East0.1%

Average asking price by region

RegionAverage asking price August 2025Year-on-year change
UK£368,740+0.3%
East Midlands£291,440+1.1%
East of England£420,729+0.6%
London£666,983-1.6%
North East£194,799+1.1%
North West£268,393+2.6%
Scotland£197,620+2.9%
South East£479,634-0.1%
South West£380,492-0.8%
Wales£270,880+3.0%
West Midlands£295,863+1.8%
Yorkshire and The Humber£253,762+0.4%

Source : Rightmove

Image : Sviatlana Zyhmantovich / iStock / 1699081966

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22 August 2025

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