Nearly one in five Brits planning to move house have hit pause and Rachel Reeves’ upcoming Budget is to blame. With whispers of a mansion tax swirling and property speculation running wild, potential movers are staying put. Rightmove’s latest survey of over 10,000 people reveals the damage: 17% have stalled their plans entirely. The kicker? Most haven’t even seen the actual Budget yet. When uncertainty costs you sales, you’ve got a problem.
The Mansion Tax Everyone’s Worried About
Here’s what’s got people spooked: Chancellor Rachel Reeves is reportedly preparing a council tax surcharge on high-value homes. Think a 1% levy on properties worth over £2m—or possibly £1.5m, depending on where the threshold lands.
So what does that mean in real money? A £2m home could face an extra £5,000 annual bill on top of existing council tax. Suddenly, “broadest shoulders” sounds like political speak for “London homeowners.”
The Treasury’s pitch? It’s targeting the wealthy. The reality? It’s disproportionately hitting pensioners in the South East who’ve owned their homes for decades and watched values skyrocket.
Who’s Most Concerned About Property Tax Changes?
Rightmove’s data paints a clear picture. Of those surveyed, 61% were aware of the rumoured tax changes. Of that group, a whopping 79% said they’re concerned.
Breaking it down by region:
- South East and West England residents are most worried (81%)
- Londoners aren’t far behind, given their property values
- Over-55s are particularly anxious (81% concerned)
Why the age skew? Analysts are calling this a potential “granny tax.” Pensioners are more likely to own high-value properties – not because they’re flush with cash, but because they bought decades ago and property values exploded.
Budget Speculation Is Already Hurting House Prices
The uncertainty isn’t just stopping people from moving, it’s actively dragging down prices. Rightmove reported that asking prices fell 1.8% in November, well above the typical 1.1% seasonal drop. That’s the biggest November decline since 2012.
Colleen Babcock, Rightmove’s property expert, didn’t mince words: “Most are now fed up with the rumours and would like to see the final contents of the Budget and assess how they’re impacted.”
Translation? Stop the speculation and show us the actual policy. Because right now, the housing market’s in limbo.
Why Housebuilders Are Sounding the Alarm
Here’s the irony: a tax meant to target the wealthy could end up hurting middle-class families trying to climb the property ladder. A major housebuilder has warned the Government that a property tax raid might push up prices and create new barriers for buyers.
When you make expensive homes more costly to own, sellers either pull back or pass costs along. Either way, liquidity dries up, and the whole market slows. It’s Economics 101—and it’s already happening.
What Happens Next?
The Budget drops next week, and the housing market’s holding its breath. Will Reeves pull the trigger on a mansion tax? Will the threshold be £1.5m or £2m? And crucially, will there be any relief for long-term homeowners who aren’t actually wealthy, just property-rich?
One thing’s certain: the longer the speculation drags on, the more damage it does. Rightmove’s survey proves it, uncertainty alone is enough to freeze decision-making. And in a market that thrives on confidence, that’s a dangerous game to play.
FAQ
Q1: What is the proposed mansion tax in the UK?
A: The proposed mansion tax would add a 1% annual levy on property values above a certain threshold—likely £1.5m or £2m. For example, a £2m home would pay an extra £5,000 per year on top of existing council tax.
Q2: Why are people delaying house moves before the Budget?
A: Nearly 17% of potential movers have paused plans due to uncertainty around property tax changes. With 79% of those aware of the rumours expressing concern, many are waiting to see the actual Budget before committing to a move.
Q3: Who would be most affected by a mansion tax?
A: Londoners and South East homeowners would bear the brunt, as property values are highest in these regions. Over-55s are particularly concerned, as many own high-value homes purchased decades ago when prices were lower.
Q4: How much have house prices dropped due to Budget speculation?
A: Asking prices fell 1.8% in November 2024—significantly more than the typical 1.1% seasonal decline. This marks the steepest November drop since 2012, directly linked to Budget uncertainty.
Q5: Could a mansion tax backfire on the housing market?
A: Yes. A housebuilder has warned it could push up overall property prices and create barriers for middle-class buyers. When high-end markets freeze, liquidity drops across the board, potentially stalling the entire housing ladder.
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Effective Date: 15th July 2025
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