Can you reclaim higher rate SDLT if you only owned non-residential property when you bought your home?

Introduction

This is a common Stamp Duty Land Tax question. A buyer pays the higher rates for an additional dwelling, then later realises the SDLT return may have been completed on the wrong basis. The issue often turns on two points: whether the buyer had already sold their previous main residence before completion, and whether any other property they owned at that date was actually a dwelling.

If the only other property interest held at completion was non-residential, that can make a major difference. The higher rates in Schedule 4ZA Finance Act 2003 apply to purchases of additional dwellings. They do not apply just because a person owns land or property of some kind. The other property must fall within the rules as a dwelling.

The Question

Two relatives bought a residential property together. They are now unsure whether the SDLT return was completed correctly. At the time of purchase, they say they did not own any other residential property, although they did own other property interests that were not residential. They also believe a form given to the conveyancer may have been completed incorrectly, leading to SDLT being paid at the higher rates.

They want to know whether owning non-residential property makes any difference, and whether a refund may be available if the higher rates were paid by mistake.

Nick’s Explanation

Nick’s view was that the starting point is the information given to the conveyancer. If the SDLT authority or instructions stated that the previous main residence would not be sold, and that another residential property was held, the conveyancer would usually be entitled to file the return on that basis.

But Nick also explained that this does not settle the tax position if the facts were different from what was stated in the form. In anonymised terms, his key point was:

“If the return indicated that the previous main residence would not be sold and that another residential property was owned, the higher rates would have been applied on that basis. However, if that information was wrong, and the previous main residence had in fact been sold before completion, and any other property held at completion was not a dwelling, the SDLT may have been self-assessed incorrectly and a correction or repayment may be available.”

He further explained that the crucial factual check is what property interests each buyer held on the completion date, and whether those interests were residential dwellings for SDLT purposes. If the only other interests were non-residential, the higher rates may not have been due.

The Law

The higher rates of SDLT for additional dwellings are contained in Schedule 4ZA to the Finance Act 2003.

In broad terms, the higher rates can apply where, at the end of the day of the transaction:

• the buyer owns a major interest in another dwelling worth £40,000 or more, and
• the purchased property is not replacing the buyer’s only or main residence.

Where there is more than one buyer, the rules are applied by looking at all buyers. If the conditions are met for any one of them, the higher rates can apply to the whole purchase.

A central concept is the meaning of “dwelling”. For Schedule 4ZA to apply, the other property interest must be in a dwelling. Non-residential land, commercial property, mixed-use property, or land that does not amount to a dwelling may fall outside these rules.

The replacement of main residence rules are also important. If a buyer sells their previous only or main residence and then buys a new main residence, the higher rates may not apply, provided the statutory conditions are met. Timing matters. If the old main residence was sold before completion of the new purchase, that often supports standard residential rates rather than the higher rates.

If too much SDLT was paid because the return was filed on an incorrect factual basis, Finance Act 2003 contains routes for amendment or repayment, subject to the statutory time limits.

Analysis

The position should be analysed in stages.

First, identify the completion date of the purchase. SDLT is tested by reference to the end of that day.

Second, identify the buyers. Because this was a joint purchase, the property interests of each buyer at the completion date matter.

Third, list every property interest each buyer held at the end of the completion day. This includes freehold and leasehold interests, shares in inherited property, rental properties, land, commercial premises, and any other real estate interests.

Fourth, classify each of those interests. The key question is not simply whether the buyer “owned property”, but whether they owned a major interest in another dwelling. If the only other interests were non-residential, that points away from the higher rates.

Fifth, consider whether the purchase was a replacement of a previous only or main residence. If the buyer had already sold their former main home before completing the new purchase, that is often a strong indicator that the replacement rules may apply, assuming the other conditions are satisfied.

Sixth, compare the true facts with what was stated in the SDLT return. If the return said, in effect, that the previous main residence would not be sold and that another dwelling was owned, but those statements were wrong, the tax may have been overpaid.

On the facts described, owning non-residential property can make a decisive difference. The higher rates are not triggered merely because a buyer owned “property”. The issue is whether they owned another dwelling within the meaning of the legislation. If they did not, and if the previous main residence had already been sold before the purchase completed, there is a real possibility that standard residential rates should have applied instead.

That said, the classification exercise must be done carefully. Some property that people informally describe as “not residential” may still be treated as a dwelling for SDLT purposes, depending on its physical condition and suitability for use. In an uninhabitable or “not suitable for use” case, the threshold is now relatively high following Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799. A property will not fall outside dwelling status merely because it needs repair or modernisation. The condition must be serious enough to meet the stricter approach confirmed by the Court of Appeal.

Outcome

If, on the completion date, the buyers had already disposed of their previous main residence and the only other property interests they held were non-residential rather than dwellings, the higher rates of SDLT may have been paid in error.

In that situation, a repayment claim may be possible, provided it is made through the correct statutory route and within the applicable time limit.

If, however, one of the buyers still owned another dwelling at the end of the completion day, or the previous main residence had not yet been sold, the higher rates may still have been due.

Practical Steps

Anyone reviewing this issue should gather the following:

• the completion date of the purchase in question;
• details of the previous only or main residence, including when it was sold and whether it was genuinely the main residence before sale;
• a full list of every property interest owned by each buyer on the completion date;
• for each property interest, evidence showing whether it was residential, non-residential, mixed-use, land only, or otherwise;
• the SDLT5 certificate, filed SDLT return, and completion statement;
• any SDLT authority form or questionnaire completed for the conveyancer.

The next step is to compare the filed return against the true facts at completion. If the return was based on incorrect information, the buyer can then assess whether an amendment, overpayment relief claim, or repayment request is the correct route under Finance Act 2003.

Where there is any doubt about whether another property counted as a dwelling, the classification should be checked carefully against the legislation, HMRC guidance, and relevant case law.

Conclusion

Yes, owning only non-residential property can make a crucial difference to SDLT. The higher rates apply to additional dwellings, not to property ownership in general. If the previous main residence had already been sold before completion and no buyer owned another dwelling at the relevant time, a refund may be available if the higher rates were paid by mistake.

Legal References Used

• Finance Act 2003
• Finance Act 2003, Schedule 4ZA
• Amarjeet and Tajinder Mudan v The Commissioners for HMRC [2025] EWCA Civ 799

This page was last updated on 22 March 2026.

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