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How to complete on a property before stamp duty deadline in March

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In September 2022, the Conservative government introduced a temporary reduction in stamp duty land tax (SDLT). The current Labour government has not extended this, which means many property buyers, including those buying their first home, will have to pay thousands more in upfront costs from 1 April 2025.

No wonder there’s been a rush of activity in the UK property market. A recent survey of homebuyers, who had had offers accepted in the past three months, found that 51% were aiming to complete before the SDLT deadline, while January’s Zoopla House Price Index showed new sales agreed were up 12% annually and buyer demand had increased by 13%.

December’s report found similarly positive sentiment with house prices rising 2% in the year to December 2024, compared to a 0.9% drop in 2023.

With this in mind, we spoke to several experts for their advice on how to get your property purchase through as quickly as possible.

How long does a property purchase take?

With 31 March just over a couple of months away, you need to have really already agreed a price with your vendors.

“It used to take around 8 to 12 weeks (so two to three months) but not anymore. Rightmove is saying it’s now closer to five months on average. That’s nearly double what most people expect,” says Sarah Walker, owner of Walker Hall Estate Agents.

Read more: 7 property planning trends of 2025

“If you’re hoping to complete before the end of March to save on stamp duty, you need to get moving right now. There’s no wiggle room for delays.”

What are the common causes of a delay to a property purchase?

To ensure your property completes by the stamp duty deadline, it’s worth being aware of the things that snare up and slow down the process.

“The most common causes of delays include protracted enquiries, complications with leasehold properties and/or management companies, and long property chains,” says Ed Percival, director and head of legal practice at Simply Conveyancing.

“Depending on the local authority and the freeholder, extracting local searches and a management pack can take significant time,” adds Emma Fildes, founder of buying agency Brick Weaver.

If you’re in a chain, there’s also a chance of a broken chain causing delays. If one person’s sale is delayed or falls through, that will delay or affect yours, even though their sale is completely independent from yours.

stamp duty Rear view of mid adult Black couple standing arm in arm and looking at facade of restored 1890 double fronted Victorian house.
If you’re hoping to complete before the end of March to save on stamp duty, you need to get moving right now. · JohnnyGreig via Getty Images

Which property purchases are the fastest and which are the slowest?

As well as missing the stamp duty deadline, property delays can be stressful and costly, especially if you’re renting while waiting to buy. It’s worth knowing, therefore, which properties are prone to taking more time.