Property purchases with both residential and non-residential elements — shops with flats above, pubs with residences, farms with land, houses with active commercial paddocks — attract SDLT at non-residential rates instead of residential. On purchases above £500,000 this typically saves tens of thousands. But HMRC applies a strict substance test — the commercial element must be genuine and material. This page shows the rates, calculates both scenarios, and explains the qualification test.

Non-residential SDLT rates (2026)

Slice	Rate
£0 - £150,000	0%
£150,001 - £250,000	2%
Above £250,000	5%

There is no additional-property surcharge on non-residential or mixed-use freehold SDLT, and no non-UK-resident surcharge. These surcharges apply only to residential-rate SDLT. This is why mixed-use classification is materially more valuable to additional-property and non-UK-resident buyers than to main-residence owner-occupiers.

What qualifies as "mixed-use"

HMRC requires the non-residential element to be genuine, substantial, and material. The test is factual — not dependent on how the property is described in a brochure. Property types where mixed-use typically qualifies:

• Shop with flat above — active retail unit + separate residential unit, both within the same title. The classic mixed-use case.
• Pub with residence — trading pub with landlord's accommodation. The pub trade is the non-residential element.
• Working farm with farmhouse — farmhouse + agricultural land in active agricultural use. Farm buildings, working paddocks, orchards, or grazing land count.
• Guest house / B&B — where the commercial hospitality use is substantive (multiple letting rooms, regular trading history, sole business).
• Live/work premises — self-contained workshop, studio, or office element with active commercial use plus residential accommodation.
• Property with commercial paddock or livery — where the paddock/stables are an active commercial letting operation (not a hobby).

What does NOT qualify — the post-Hyman position

The 2019 Hyman v HMRC case established that garden paddocks and unused outbuildings do NOT create mixed-use status, even if labelled as "commercial" or "agricultural" on planning documents. Follow-on tribunal cases (Goodfellow, Rossaland) confirmed the strict test. HMRC now routinely challenges mixed-use claims on:

• Domestic paddocks used for the family's own horses or leisure — no commercial trade.
• Outbuildings without active use — a former dairy or workshop that has been converted to storage or is unused.
• Woodland or grazing land where no active commercial forestry or letting is under way.
• Home offices — even a substantial home office does not create mixed-use if the home is the buyer's residence.
• Airbnb / holiday-let arrangements where the main dwelling continues to be occupied as a family home.

The qualification test — practical framework

When assessing whether your purchase qualifies, work through:

1. Is there physically distinct non-residential space? — a shop unit, agricultural land, commercial outbuilding.
2. Is there an active commercial or agricultural use of that space? — trading business, commercial let, active farming.
3. Has that use been in place for a meaningful period before the transaction? — historic use suggests substance; use started recently to support a tax claim suggests contrivance.
4. Will that use continue after the transaction? — if the buyer intends to cease the commercial use immediately, HMRC may challenge.
5. Is the commercial element material relative to the residential? — a token strip of land next to a large house is unlikely to qualify.

Yes to all five: strong mixed-use case. Doubtful on any: get specialist SDLT advice before completing.

Worked examples

Example 1 — Shop with flat above, £600,000

An investor buys a high-street property: ground-floor convenience store on a 15-year commercial lease + one- bedroom flat above let separately.

• Mixed-use SDLT: £150k × 0% + £100k × 2% + £350k × 5% = £2,000 + £17,500 = £19,500
• Residential (additional-property) SDLT: 5% × £125k + 7% × £125k + 10% × £350k = £6,250 + £8,750 + £35,000 = £50,000
• Saving from mixed-use: £30,500

Example 2 — Working farm with farmhouse, £1,200,000

A working farm: farmhouse + 40 acres of active grazing land + agricultural buildings (dairy, tractor shed, hay barns) — all in active agricultural use. Buyer is UK-resident, already owns a home.

• Mixed-use SDLT: £150k × 0% + £100k × 2% + £950k × 5% = £2,000 + £47,500 = £49,500
• Residential (additional-property) SDLT: standard £68,750 + 5% surcharge £60,000 = £128,750
• Saving: £79,250

Example 3 — House with garden paddock, £800,000 (does NOT qualify)

A country house with 5-acre paddock used for the family's own horses. No commercial livery, no let arrangement. Buyers claim mixed-use.

• Claimed mixed-use SDLT: £29,500
• Actual HMRC treatment: residential SDLT (main home) £27,500
• Post-Hyman, this claim fails at first-tier tribunal. HMRC recovers £27,500 SDLT plus interest plus penalty of 15-30% on top for careless behaviour.
• Lesson: hobby paddocks do NOT qualify. The commercial use must be genuine.

Example 4 — Non-UK-resident buyer, £2,500,000 mixed-use

Non-UK-resident overseas buyer purchasing a £2.5M London mixed-use freehold (commercial ground floor + residential upper floors, all let on genuine commercial and residential leases).

• Mixed-use SDLT: £150k × 0% + £100k × 2% + £2.25M × 5% = £2,000 + £112,500 = £114,500
• Residential (additional-property + non-UK-resident) SDLT: standard £213,750 + 5% additional + 2% non-resident = approximately £433,750
• Saving: £319,250
• The scale of savings at high value and complex buyer profile is why HMRC scrutinises mixed-use claims most heavily in this category.

Getting the classification right — documentation

Where you're relying on mixed-use classification, document the commercial element before completion:

• Commercial lease or tenancy agreement in force at the effective date
• Rental income history — bank statements, tenant records, prior year accounts
• Business rates registration for the commercial element
• Planning permission or lawful development certificate for the commercial use
• VAT registration where applicable
• Photographs of the commercial element in active use

Where the commercial element is agricultural, keep evidence of active agricultural trading — Basic Payment Scheme claims, grazing agreements, produce sales, veterinary or contractor invoices.

Interaction with other SDLT rules

• Additional-property surcharge (5%): does NOT apply to non-residential/mixed-use SDLT.
• Non-UK-resident surcharge (2%): does NOT apply to non-residential/mixed-use SDLT.
• First-time buyer relief: does NOT apply to mixed-use — it is a residential-only relief.
• Multiple Dwellings Relief: abolished 1 June 2024, so no longer relevant.
• 6+ dwellings election: still available for large residential portfolios; election is between residential-rate SDLT (with surcharges) and non-residential-rate SDLT. Where you have 6+ dwellings AND a commercial element, the mixed-use route is often cleaner.

Why HMRC challenges are common

Post-Hyman, HMRC challenges roughly 30-40% of mixed-use SDLT claims on residential-appearing properties (houses with land, houses with paddocks, country properties with outbuildings). Successful challenges result in the SDLT bill being recalculated at residential rates, plus interest, plus penalties (typically 15-30% of the underpaid tax).

Where the mixed-use case is strong (active commercial let, trading business, active agricultural use), HMRC accepts. Where the case rests on speculative future use, or a passive paddock, or a token commercial element, HMRC challenges.

Frequently asked questions

What counts as mixed-use for SDLT?

Property with both residential and non-residential elements — shop with flat, pub with residence, farm with land, live/work premises. The non-residential element must be genuine and substantial.

What are the non-residential SDLT rates?

0% up to £150k, 2% £150k-£250k, 5% above £250k. No additional-property or non-UK-resident surcharges apply to mixed-use SDLT.

How does HMRC decide?

Factual substance test — genuine, sustained, material commercial use. Post-Hyman tribunal precedent excludes garden paddocks, unused outbuildings, hobby uses.

Do buy-to-let purchases count as mixed-use?

No. BTL is 100% residential property let for residential use. Mixed-use requires an actual commercial or agricultural element.

How much can mixed-use rates save?

£20k-£300k+ depending on price and buyer type. Highest savings on additional-property and non-UK-resident buyers where mixed-use avoids stacked surcharges.

What if the property becomes fully residential after purchase?

SDLT is fixed at the effective date. But immediate cessation of commercial use post-completion triggers HMRC scrutiny — the commercial use must be genuine at the time of purchase, not staged.

Do I need a specialist for mixed-use SDLT?

Strongly recommended above £500k. Cost £500-£1,500; tax at stake typically 10-50× that. Getting classification wrong triggers full SDLT bill plus interest plus penalties.

Can I claim MDR on mixed-use?

No — MDR was abolished 1 June 2024. Even before abolition, MDR only reduced SDLT on the residential dwellings within a mixed-use purchase, not on the whole.

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Last reviewed: 21 August 2026. Estimate only — always confirm SDLT with your conveyancer or SDLT specialist.