The Conservative Case for Abolishing Stamp Duty Land Tax
At the Propertymark One annual conference, Shadow Chancellor Sir Mel Stride made one of the boldest housing policy statements heard in British politics in years: scrap Stamp Duty Land Tax entirely for primary residences. According to Stride, doing so could increase housebuilding in England by as much as a quarter — a figure that, if realised, would represent a transformative shift in the UK's chronic housing supply crisis. The speech has reignited a long-running debate about whether stamp duty is a barrier to a functioning property market, or a vital source of Treasury revenue that simply cannot be abandoned.
For estate agents, developers, first-time buyers, and existing homeowners alike, the implications of full stamp duty abolition are enormous. Understanding the argument — and the counterarguments — is essential as the policy landscape heading into the next general election begins to take shape.
What Is Stamp Duty and Why Does It Matter?
Stamp Duty Land Tax (SDLT) is a tax paid by buyers when purchasing property in England and Northern Ireland above certain price thresholds. It has long been criticised by housing economists and industry professionals for acting as a friction cost that discourages people from moving. When moving home becomes expensive, people stay put — even when their circumstances change and a different property would better suit their needs.
A family whose children have grown up and left may remain in a large house simply because the cost of downsizing, once stamp duty, legal fees, and moving costs are factored in, makes the exercise financially unattractive. Conversely, a growing family may delay upsizing because the tax burden on a larger home purchase feels prohibitive. The net effect is a property market that moves more slowly and inefficiently than it otherwise would.
This "lock-in effect" is well-documented in academic and industry research. When stamp duty is reduced or temporarily abolished — as was the case during the pandemic stamp duty holiday introduced by Rishi Sunak in 2020 — transaction volumes typically surge, demonstrating that demand for movement in the market is latent and waiting to be unlocked.
Sir Mel Stride's Argument: Abolition Drives Housebuilding
What makes Sir Mel Stride's speech particularly significant is not just the call for abolition itself, but the specific claim attached to it: that scrapping stamp duty on primary residences could boost housebuilding by 25%. This is a striking assertion that links a tax reform not merely to increased transaction volumes, but to new supply entering the market.
The logic runs as follows. When existing homeowners feel free to move without punishing tax costs, the entire chain of transactions becomes more fluid. People downsize, releasing larger family homes. Developers who have been sitting on land waiting for market confidence see greater demand signals and push forward with new builds. Planning applications increase. The secondary market becomes more dynamic, which in turn creates stronger incentives for builders to deliver new properties because they know buyers can and will move.
In this reading, stamp duty is not just a buyer's cost — it is a structural drag on the entire housing ecosystem, from individual transactions all the way up to national housebuilding targets.
How Does This Compare to Current Government Policy?
The current Labour government has set ambitious housebuilding targets of 1.5 million new homes over the course of this parliament. To achieve this, it has pursued a range of planning reform measures and development incentives. However, the government has shown no appetite for abolishing stamp duty, and in fact the temporary stamp duty thresholds introduced under the Conservatives expired in April 2025, reverting to previous levels and adding thousands of pounds to the cost of purchasing a home for many buyers.
The Conservative opposition, under Shadow Chancellor Stride's economic vision, appears to be positioning a future manifesto around a markedly different approach — one that prioritises unlocking market mechanisms over direct state intervention to deliver housing supply growth.
What Would Stamp Duty Abolition Mean in Practice?
For the average homebuyer, the savings from abolishing stamp duty on a primary residence would be substantial. On a £300,000 property, a buyer currently pays £5,000 in stamp duty. On a £500,000 property, that figure rises to £12,500. For buyers in London and the South East, where average house prices routinely exceed £600,000, the tax liability can easily reach £20,000 or more.
Removing this cost entirely would have several likely effects:
- Increased transaction volumes as the friction cost of moving is eliminated, encouraging more people to buy and sell at the right time for their circumstances rather than delaying due to tax costs.
- Greater market liquidity with more properties coming onto the market from owners who had previously chosen to stay put, giving buyers more choice and potentially moderating price growth in supply-constrained areas.
- Stronger incentives for developers who would see a more active secondary market as evidence of demand, supporting the business case for new build projects.
- Simplified conveyancing as one of the more complex calculations in the home-buying process is simply removed from the equation.
The Critics' View: Can the Treasury Afford It?
No serious policy debate about stamp duty abolition can ignore the fiscal question. Stamp Duty Land Tax raises approximately £11–14 billion per year for the Treasury, depending on market conditions. Scrapping it entirely would create a significant hole in public finances that would need to be addressed through spending cuts elsewhere, other tax rises, or a bet that the economic activity generated by a more fluid housing market would recoup much of the lost revenue over time through increased income tax receipts, VAT on associated spending, and broader economic growth.
Critics also argue that stamp duty abolition risks simply inflating house prices rather than genuinely improving affordability. There is historical evidence to suggest that when transaction taxes are removed or reduced, sellers adjust their asking prices upward, capturing much of the benefit that was intended for buyers. Whether full abolition would avoid this outcome — or whether complementary reforms such as increased housing supply would be sufficient to counteract price inflation — remains a genuinely contested empirical question.
The Propertymark One Conference: Why This Speech Matters
The choice of Propertymark One as the venue for this announcement is itself telling. Propertymark is the leading professional body for property agents in the UK, representing estate agents, letting agents, and other property professionals. Addressing its flagship annual conference signals that Sir Mel Stride is actively seeking to engage the property industry with a concrete policy offer — and that the Conservatives see housing as a central battleground issue for the next election.
For property professionals watching the political landscape, a senior Opposition politician making specific, quantified claims about the impact of stamp duty abolition at an industry conference is not something to dismiss lightly. Whether or not this policy ever reaches a manifesto, let alone a Finance Bill, the debate it sparks is one the industry has every reason to follow closely.
The Bottom Line for the UK Property Market
Sir Mel Stride's speech at Propertymark One has placed stamp duty abolition firmly back at the centre of the UK housing policy debate. The claim that scrapping the tax could boost housebuilding by 25% is ambitious and will require rigorous scrutiny. But the underlying principle — that stamp duty acts as a brake on market efficiency, household mobility, and ultimately housing supply — is supported by substantial evidence and has long commanded broad agreement among housing economists and industry professionals.
Whether the political will exists to absorb the short-term fiscal cost of abolition in exchange for long-term market gains remains to be seen. But for buyers, sellers, agents, and developers navigating an already complex market, the prospect of a future without stamp duty on primary residences is one that deserves serious attention and informed debate.