VAT on commercial-to-residential conversions: the two-company structure that saves VAT and SDLT

Converting a tired office, shop or warehouse into homes is one of the most attractive plays in UK property right now — planning policy supports it, and the yield on well-located residential is hard to argue with. But there is a trap hiding in the tax, and it catches people constantly: do the conversion and the letting in the same company, and the VAT on the works becomes a straight cost you can never get back. Structure it properly from the start and that VAT is recoverable in full — and the property can still end up in a dedicated letting company without paying Stamp Duty Land Tax on the way. Here’s how it works.

The VAT on the conversion works: 20%, 5% — or sometimes 0%

First, the good news: conversion works rarely need to carry the full 20% VAT. The default position is that building work converting a non-residential building into dwellings qualifies for the reduced rate of 5%. That covers the contractor’s labour and the building materials they supply as part of the job — see HMRC’s VAT Notice 708 for the detail. On a sizeable conversion, getting the contractor to charge 5% instead of 20% is a significant saving in its own right, and contractors do not always apply it unprompted.

In some situations the works can go further and be zero-rated at 0%, because the project counts for VAT as constructing a new dwelling rather than converting an old building:

• Demolition to ground level. If the existing building is demolished completely to ground level and homes are built in its place, that is new construction, and the building works qualify for 0%.
• Facade retention. A project that keeps no more than a single facade — or a double facade on a corner site — can still count as a new build at 0%, but only where retaining the facade is an explicit condition or requirement of the planning consent.
• Housing associations. Conversion services supplied to a relevant housing association converting a non-residential building into homes can also be zero-rated.

The 5% rate stretches beyond straight commercial-to-residential jobs too — it also covers works that change the number of dwellings in a building (a house into flats, say) and the renovation of homes that have stood empty for two years or more. The dividing lines between 20%, 5% and 0% are drawn finely in Notice 708, the correct rate is fixed by the facts of the project rather than by negotiation, and a contractor who charges the wrong rate creates a problem for both sides. Pin the rate down — in writing — before the building contract is signed, not when the first invoice arrives.

One thing never changes, though. Professional fees — architects, structural engineers, planning consultants, project managers — are always standard-rated at 20%, and so are materials you buy directly rather than through the contractor. So even on a well-run conversion you will be sitting on a meaningful pile of input VAT: 5% (or occasionally 0%) on the works and 20% on the fees.

The problem: renting homes out is exempt

Whether you can recover that VAT depends entirely on what you do with the finished homes. Residential letting is an exempt supply — no VAT is charged on the rent, and in return the landlord cannot reclaim the VAT on related costs (HMRC’s Notice 742 covers the territory). As we explained in our guide to UK VAT rates, exempt is worlds apart from zero-rated: both mean no VAT on the income, but only one lets you recover the VAT on your costs.

So if one company converts the building and then keeps it to rent out, all of that input VAT — the 5% on the works, the 20% on the fees — relates to exempt letting income and is irrecoverable. On a £1 million conversion spend, that is broadly £50,000 to £70,000 of tax simply absorbed into the project cost.

The opportunity: the first sale of a converted dwelling is zero-rated

Here is the pivot on which the whole structure turns. When the person who converted a non-residential building into dwellings makes the first grant of a major interest in those dwellings — selling the freehold, or granting a lease of over 21 years — that sale is zero-rated, not exempt.

Zero-rated means it is still a taxable supply, just at 0%. And because the conversion costs now relate to a taxable sale rather than exempt rents, the developer can recover the input VAT in full — the 5% on the building works and the 20% on the professional fees alike.

Putting it together: develop in one company, let in another

The structure follows naturally from those rules:

• The development company (DevCo) buys the commercial building, obtains planning, and carries out the conversion. It registers for VAT and recovers the VAT on the works and fees as the project runs.
• On completion, DevCo makes the first grant of a major interest — typically selling the freehold or granting long leases — to a letting company (PropCo) in the same corporate group. That first grant is zero-rated, which is what secures DevCo’s VAT recovery.
• PropCo then rents the homes out. Its letting income is exempt, but that no longer matters: PropCo bought completed dwellings and has little or no input VAT of its own to lose.

The result: full VAT recovery on the conversion, and the properties sitting in a clean, dedicated letting company — the arrangement most lenders and most group structures prefer anyway.

And no SDLT on the transfer

Normally, selling completed homes from one company to another would trigger Stamp Duty Land Tax on the market value — enough to wipe out much of the VAT benefit. This is where SDLT group relief comes in. Where both companies are members of the same group — broadly, one is a 75% subsidiary of the other, or both are 75% subsidiaries of a common parent — the transfer between them can be fully relieved from SDLT. HMRC’s guidance on SDLT reliefs sets out the conditions.

Two health warnings. Group relief is clawed back if PropCo leaves the group within three years while still holding the property, and it is denied altogether where there are arrangements for the group relationship to end or for outside parties to obtain control. This is relief for genuine group reorganisations, not a bolt-on for a sale that is really heading elsewhere.

The trap: do not VAT-group the two companies

This is the single most common way the structure is accidentally broken. An SDLT group and a VAT group are entirely different things. If DevCo and PropCo register as a single VAT group, supplies between them are disregarded for VAT altogether — there is no zero-rated first grant, the group’s income is just exempt rent, and the VAT recovery on the conversion collapses. The companies need to be grouped for SDLT (and corporation tax) purposes, but must file separate VAT registrations so the sale between them is a real, zero-rated supply.

White goods, carpets and the “builder’s block”

One more wrinkle that catches almost every conversion: not everything that goes into the finished homes counts as “building materials” for VAT purposes. The favourable rates — and the developer’s right to recover VAT — only extend to building materials ordinarily incorporated into a dwelling. Three familiar categories sit outside the definition:

• Carpets and carpeting material — although other floor coverings, such as wood, laminate, vinyl and tiles, do count as building materials;
• White goods and most electrical or gas appliances — washing machines, fridges, freezers, dishwashers, ovens and the like. Appliances designed to provide space or water heating (boilers, radiators) are fine, as are items such as extractor fans, ventilation systems and burglar alarms; and
• Fitted furniture other than kitchen units — built-in bedroom wardrobes being the classic example.

The consequences are twofold. First, the contractor must charge 20% VAT on those goods, even where the rest of the job is at 5% or 0%. Second — and this is the part people miss — a rule known as the builder’s block prevents the developer recovering the input VAT on them even where it goes on to make a zero-rated first grant. The VAT on carpets and white goods is a real cost of the project whichever way it is structured. Specification choices genuinely change the tax bill here: the VAT on wooden or vinyl flooring is recoverable where the VAT on carpet is not — worth knowing before the spec is finalised, not after.

Other points to get right

• The homes must qualify as dwellings. Zero-rating and the 5% rate both depend on the conversion creating buildings “designed as dwellings”, with planning consent in place and no restrictions preventing separate use or disposal.
• The sale crystallises DevCo’s profit. The homes are DevCo’s trading stock, so the transfer to PropCo happens at market value and any development profit is taxed in DevCo as trading income. That tax was always coming — the structure changes the VAT and SDLT outcome, not the corporation tax on the profit.
• Grant the right interest. Only the first grant of a major interest is zero-rated — the freehold or a lease over 21 years. A short lease or a second sale is exempt, and the recovery position changes.
• Sequence matters. The structure needs to exist, and the intention to make the zero-rated grant needs to be real, while the VAT is being incurred. Converting first and thinking about structure afterwards is how recovery gets lost.
• The Construction Industry Scheme is likely to apply to the works, with registration and deduction obligations for DevCo as a contractor or deemed contractor.

The bottom line

Commercial-to-residential conversion sits on a genuine fault line in the VAT system: the works can be recoverable in full or a dead cost, depending entirely on how the ownership is arranged. A development company converting and making a zero-rated first grant to a separately VAT-registered letting company in the same SDLT group captures the best of both — full VAT recovery on the conversion, no SDLT on the transfer, and the rental business sitting in the right vehicle for the long term. But the reliefs all carry conditions, the anti-avoidance rules have teeth, and the planning has to be in place before the money is spent. If you are weighing up a conversion project, talk to us at the appraisal stage — not after the contractor’s first invoice arrives.