VAT on London Renovation Projects: What Is Zero-Rated, Reduced, and Standard

VAT on construction and renovation work is not a flat 20%. Depending on the nature of the work, the type of building, and in some cases its previous use, the applicable rate can be 0%, 5%, or 20%. For a substantial renovation project, the difference between standard rate and zero or reduced rate VAT represents a very significant sum — on a £500,000 contract, the difference between 0% and 20% VAT is £100,000.

This is a guide to the main VAT categories that apply to London residential renovation, intended to help clients understand their position and ask the right questions of their contractor and accountant.

*Note: VAT rules are complex and change. This guide reflects the position as of 2026. Always confirm the applicable rate with your contractor's accountant or a specialist VAT adviser before committing to a budget.*

Zero-rated construction work (0%)

New dwellings: The construction of a new dwelling — a completely new building — is zero-rated for VAT. This applies where the construction is of a new house or flat on a cleared site (or where the only pre-existing structure retained is the façade under a planning condition).

Conversion from non-residential to residential: Converting a building that has not been used as a dwelling (a former office, warehouse, or church) into a dwelling or dwellings is zero-rated. This is an important relief for the increasing number of London commercial-to-residential conversions. The zero-rating applies to the construction services and most building materials installed as part of the conversion.

Substantially reconstructed listed buildings: Where a listed building that was not previously used as a dwelling is converted to residential use, and where the reconstruction is substantial (specifically, the works must constitute an approved alteration under the listed building consent regime), the services may be zero-rated.

Reduced rate construction work (5%)

Renovating a long-vacant dwelling: Works to a dwelling that has been empty for two or more years attract the 5% reduced rate. HMRC's definition of "empty" is specific — the property must not have been used as a dwelling in the previous two years. Evidence is typically required (council tax records, utility company confirmation of non-occupation).

Converting a property to different residential use: Works that change the number of dwellings — converting a single house into flats, or multiple flats into a single house — attract the 5% reduced rate for the qualifying services.

Energy-saving materials: Installation of qualifying energy-saving materials (insulation, solar panels, heat pumps, wind turbines) in residential properties is subject to 0% VAT from April 2022 (previously 5%). This is a meaningful relief for insulation-heavy and heat pump projects.

Disabled adaptations: Services and materials for adaptations to a dwelling for the benefit of a disabled person can qualify for the reduced or zero rate, depending on the specific works.

Standard rate work (20%)

Renovation and repair of an occupied or recently occupied dwelling: Routine renovation, repair, and refurbishment of a dwelling that has been occupied within the last two years is standard-rated at 20%. This covers the vast majority of residential renovation in London — whole-house renovations, extensions, loft conversions, kitchen and bathroom refurbishments in occupied properties.

This is the rate that applies to most of ASAAN's core work — the renovation of occupied prime London properties. There are no reliefs for the renovation of an occupied dwelling purely because the work is extensive or the property is of historic significance.

What the contractor charges versus what is reclaimable

Most clients on London residential renovation projects are private individuals and cannot recover VAT — it is a cost. The 20% VAT on the contract sum is a real additional cost that must be included in the project budget.

Limited situations where VAT recovery is possible: - Landlords with a VAT registration: A landlord renting a property on a commercial lease can potentially recover input VAT on construction costs — but residential lettings are VAT-exempt, which complicates recovery. Specialist VAT advice is essential. - Mixed-use developments: Where a building has a commercial element, a partial VAT recovery may be available on the construction costs apportioned to the commercial use. - DIY builders' VAT reclaim scheme: Owner-occupiers who build their own home (and are the first occupier) can reclaim VAT on materials under HMRC's DIY builders' scheme. This applies to new-build only, not renovation.

Practical points for clients

Check your contractor's VAT registration: A contractor must be VAT-registered if their annual turnover exceeds the registration threshold (£90,000 as of 2024). A contractor below this threshold may not charge VAT — but should not claim to charge it if unregistered. Verify VAT registration numbers via the HMRC VAT checker.

Ask about applicable rates at tender stage: A reputable contractor will have considered the VAT position for the specific works and will be able to explain the rate applied and why. If the contractor proposes a reduced or zero rate that you were not expecting, ask them to explain the basis and ideally obtain a brief written note from their accountant confirming the rate is correctly applied.

Budget 20% VAT on standard-rated works: Unless you have specific advice that a reduced or zero rate applies, budget the full 20% VAT on your contract sum. The cost of incorrectly assuming a reduced rate — and then receiving an invoice at 20% — is a significant budget problem.

Long-vacant property opportunity: If you are purchasing a property that has been empty for two or more years, the 5% reduced rate on renovation works is a meaningful saving. A property purchased for £800,000 with a £400,000 renovation programme saves £60,000 in VAT at the reduced rate versus the standard rate.

ASAAN applies the correct VAT rate to all services and discusses VAT implications with clients at tender stage. For clients where the VAT position may not be straightforward, we recommend a specialist VAT adviser be consulted before the contract is signed.