Stamp Duty

Tax on your outbuildings

We find out if you overpaid on Stamp Duty Land Tax (SDLT).

Assessing the complicated rules

Stamp Duty Land Tax (SDLT) can be complicated and there are many specialist exemptions that can apply depending on the property being purchased. If you bought a home with habitable outbuildings or separate internal dwellings, you might have overpaid on top of the standard stamp duty due on your house purchase. In many cases this is a substantial amount but the good news it can be reclaimed.

Don’t receive a pay-out, don’t pay a penny

If we’re unable to get a successful claim, you don’t have to pay us a penny.

Struggle for time? – minimal input required

We can begin our investigation with just a few details from you.

Fast turnaround time, so you can sit back and relax

Money is typically back from HMRC within 6 weeks of starting your claim.

What is it?

Stamp duty explained

The HMRC rules for Stamp Duty are complex and there are exemptions in the Finance Act 2003, which are not widely known. This means that some people end up overpaying their Stamp Duty.

Rule change

A property with a self-contained annexe is now treated as a multiple dwelling.

Success rate

We have a 100% success rate on qualifying stamp duty reclaims.


Specialist knowledge is required to understand the stamp duty rules.

Time-limited claim

Any claim must be made within 12 months of the date of the purchase.


Are you eligible?

If you’ve bought a home with outbuildings recently, it’s always worth seeing if you have a valid claim for a tax rebate. But if any of the following rings true, you stand a greater chance of being successful.

  • You own a detached property with a purchase price in excess of £700k
  • You purchased your home within the last 12 months
  • Your property has an annexe or separate internal living space (e.g. granny flat)
  • You don’t know the breakdown of your stamp duty payment
Start your claim

Getting repaid should be a piece of cake

We put in all the hard work so you don’t have to. All we need to start taking back your slice of money is a few details.

We love stats & figures

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Success rate on qualifying stamp duty claims

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Average recovery amount

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Properties affected annually

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Reclaims experience

Very professional and focused on results 

We were a bit sceptical at first, but pleasantly surprised with the professionalism and results from Jack at Crystal! 

Daniel Richard, 2021

Fantastic service

I was sceptical at first but I have to admit the team were brilliant. Jack was on hand to answer any question I had. – Great service! 

Adam Willbourn, 2021

Could not be friendlier or efficient.

Very friendly and efficient service with no problems. 

Robert Bellis, 2021

Further products

Do you have other valid claims?

You won’t know until you’ve tried. With nothing to lose, it’s always worth finding out. All we need are a few simple details.


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When you haven’t been treated fairly by a lender.