SDLT on Linked Purchases of Multiple Residential Blocks
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Do separate purchases of two blocks of six flats from the same seller count as linked transactions for SDLT?
Introduction
Buyers often know the basic SDLT rule that a purchase of six or more dwellings can be taxed at non-residential rates. The difficulty usually comes when the dwellings are split across more than one property title, more than one contract, or more than one mortgage. A common question is whether HMRC looks at each block separately or whether it combines them.
That matters because, if the transactions are linked, SDLT is generally calculated on the total consideration for all linked purchases. It also matters because the special rule for six or more dwellings can move the transaction out of the residential SDLT regime and into the non-residential rate table.
The Question
A buyer is purchasing two separate blocks from the same seller. One block contains six holiday flats and the other contains six residential flats. The two blocks are on separate titles and have separate mortgage arrangements. The buyer wants to know whether each block is treated separately for SDLT, or whether both purchases are treated together so that non-residential SDLT rates apply to the total price for all 12 units.
Nick’s Explanation
Nick’s view was that the key issue is not whether the blocks have separate titles or separate borrowing, but whether the acquisitions are linked transactions under the SDLT rules.
In anonymised form, his reasoning was:
- Where transactions form part of a single scheme, arrangement or series of transactions between the same seller and buyer, section 108 Finance Act 2003 treats them as linked transactions.
- Where six or more separate dwellings are the subject of a single transaction, section 116(7) Finance Act 2003 provides that those dwellings are treated as not being residential property for SDLT purposes.
- Where the purchases are linked, the SDLT calculation is made by reference to the combined position.
- As a result, if the linked acquisitions together involve six or more dwellings, the non-residential SDLT rate table applies to the aggregate consideration.
Nick also made the practical point that separate titles and separate mortgages do not stop transactions from being linked if they are between the same seller and buyer and form part of the same overall arrangement.
The Law
The main provisions are in Finance Act 2003.
Section 108 FA 2003 deals with linked transactions. It provides that transactions are linked if they form part of a single scheme, arrangement or series of transactions between the same vendor and purchaser, or persons connected with them.
Section 55 FA 2003 sets out how SDLT is charged. For linked transactions, SDLT is generally calculated by applying the relevant rate structure to the aggregate consideration.
Section 55(1C) FA 2003 is relevant where special rules affect the nature of the property being acquired.
Section 116(7) FA 2003 states:
“Where six or more separate dwellings are the subject of a single transaction involving the transfer of a major interest in, or the grant of a lease over, them, then, for the purposes of this Part as it applies in relation to that transaction, those dwellings are treated as not being residential property.”
The effect of section 116(7) is that a qualifying acquisition of six or more dwellings is treated as non-residential property for SDLT purposes. That means the non-residential rate table in section 55, Table B applies instead of the residential rates.
It also means the higher rates for additional dwellings in Schedule 4ZA Finance Act 2003 do not apply, because those higher rates apply within the residential SDLT regime.
Analysis
The analysis usually works in four steps.
Identify whether there is more than one land transaction.
Here, there are two acquisitions: one block of six holiday flats and one block of six residential flats.
Ask whether the transactions are linked under section 108.
If both purchases are between the same seller and the same buyer, and they are part of the same arrangement or series, they are likely to be linked. In practice, buying two blocks from the same seller as part of one overall deal will usually point strongly towards linked transaction treatment.
Count the dwellings across the linked position.
If the linked transactions together involve six or more separate dwellings, the six-or-more rule becomes relevant. On the facts described, the total is 12 dwellings.
Apply section 116(7).
Because the linked acquisition involves six or more dwellings, the dwellings are treated as not being residential property for SDLT purposes. The result is that SDLT is charged using the non-residential rates on the aggregate consideration for the linked transactions.
The fact that one block is used as holiday accommodation and the other is a standard residential block does not, on these facts, prevent the linked transaction rules from operating. Nor do separate titles or separate mortgages decide the issue. Those matters may be relevant to how the deal is documented, but they do not override the statutory test in section 108.
The practical SDLT effect is that HMRC would usually look at the combined consideration for both linked purchases and charge SDLT at non-residential rates on that total figure.
Outcome
Where two blocks of six flats each are bought from the same seller as part of the same overall arrangement, they are likely to be linked transactions under section 108 FA 2003.
If so, the combined acquisition involves six or more dwellings, so section 116(7) FA 2003 applies. The purchase is then treated as non-residential property for SDLT purposes, and SDLT is calculated on the aggregate consideration using the non-residential rate table in section 55, Table B.
On that basis, the higher rates for additional dwellings under Schedule 4ZA FA 2003 would not apply.
Practical Steps
If you are assessing a similar purchase, the main points to check are:
- whether the same buyer and seller are involved in both acquisitions;
- whether the purchases are part of one overall deal, arrangement or series of transactions;
- how many separate dwellings are being acquired in total across the linked position;
- whether the SDLT return should reflect linked transaction treatment and aggregate consideration;
- whether any part of the property is genuinely non-residential for other reasons, although that may not be necessary if the six-or-more rule already applies.
It is sensible to review the contract structure, heads of terms, completion mechanics and SDLT return drafting carefully. In linked transaction cases, the legal documentation often makes it easier to see whether HMRC is likely to regard the purchases as one arrangement.
Conclusion
If two separate blocks are bought from the same seller as part of the same arrangement, SDLT will usually treat them as linked transactions. Where the linked purchases together comprise six or more dwellings, section 116(7) FA 2003 generally moves the acquisition into the non-residential SDLT regime, with tax charged on the total consideration at non-residential rates.
Legal References Used
- Finance Act 2003, section 55
- Finance Act 2003, section 55, Table B
- Finance Act 2003, section 55(1C)
- Finance Act 2003, section 108
- Finance Act 2003, section 116(7)
- Finance Act 2003, Schedule 4ZA
This page was last updated on 22 March 2026.
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