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How to Reclaim VAT on a New Self-Build Project

A new self-build project can involve thousands of pounds in VAT, but did you know you may be able to reclaim some of it? If you are building your own home, understanding the VAT rules can help you recover eligible costs and reduce the overall cost of your project.

You may be able to reclaim VAT on eligible costs through HMRC’s DIY Housebuilders Scheme. You need to make one claim using form VAT431NB within 6 months of receiving your building control completion certificate.

In this blog, we explain who can claim, which costs qualify, what documents you need, and how to submit your VAT reclaim correctly.

What Is the Self-Build VAT Reclaim Scheme?

The DIY Housebuilders Scheme allows eligible people building a new home to reclaim VAT on qualifying building materials they buy themselves.

While qualifying construction work is usually zero-rated, materials bought directly may include VAT. The scheme helps self-builders recover eligible VAT and avoid paying more than necessary.

Not every purchase qualifies, so it is important to check the VAT rules before buying materials.

Who Can Claim VAT on a New Build?

You may qualify if you are:

  • Building a brand-new residential dwelling.
  • Converting a non-residential building into a new home (subject to HMRC rules).
  • Constructing the property for your own personal use rather than for immediate resale.
  • Applying within the HMRC deadline after the project is completed.

The property must satisfy HMRC's definition of a new dwelling, including having separate access and being capable of independent occupation.

If you're unsure whether your project qualifies for a VAT reclaim on new build, seeking professional advice before construction begins can prevent costly mistakes later.

Understanding VAT on Building Construction

Many people assume every construction cost attracts VAT, but that's not always the case.

When considering VAT on building construction, different supplies receive different VAT treatments depending on who supplies them and the type of work involved.

Generally:

  • Construction services supplied by VAT-registered contractors on qualifying new residential builds are usually zero-rated.
  • Building materials purchased directly from suppliers generally include standard-rate VAT.
  • Professional services such as architects, surveyors and planning consultants usually remain subject to VAT and are not normally reclaimable under the DIY Housebuilders' Scheme.

Knowing the difference helps ensure you only include eligible expenses when claiming VAT on new build projects.

What Materials Can Be Included in a Self Build VAT Reclaim?

HMRC generally allows VAT recovery on building materials that become part of the completed property.

Common qualifying items include:

  • Bricks and blocks
  • Timber
  • Roofing materials
  • Insulation
  • Windows and external doors
  • Kitchens permanently installed
  • Bathroom suites
  • Boilers and heating systems
  • Electrical wiring
  • Pipes and plumbing materials

The materials must normally be incorporated permanently into the building.

A successful self build VAT reclaim depends on maintaining detailed purchase records throughout the project.

What Cannot Be Reclaimed?

Some purchases are excluded, even if they were necessary during construction.

Examples include:

  • Architectural fees
  • Planning application fees
  • Surveying costs
  • Landscaping
  • Garden furniture
  • Household appliances that are not built in
  • Hire equipment
  • Scaffolding hire
  • Security systems that are easily removable

Many applicants incorrectly include these costs, which can delay a VAT reclaim on a new build application.

What Is 5% VAT on Building Work?

One area that often causes confusion is 5 VAT on building work.

While most qualifying new-build construction services are zero-rated, some renovation and conversion projects may qualify for the reduced 5% VAT rate instead.

Examples may include:

  • Certain residential conversions
  • Properties empty for an extended period before renovation
  • Some qualifying changes of use

However, the reduced rate does not automatically apply to every construction project. The correct VAT treatment depends on the property's history and the work being carried out.

Understanding whether 5 VAT on building work applies to your project is important before agreeing contracts with builders.

Documents You'll Need for Your VAT Reclaim 

  • The VAT431NB form 
  • Original VAT invoices
  • Purchase receipts
  • Completion certificate
  • Building control approval
  • Planning permission
  • Proof of payment where applicable

How to Claim VAT on a New Build

The process is relatively straightforward if you've kept accurate records.

1. Complete Your Project

You can only apply once construction has been completed and you have received the relevant completion certificate.

2. Organise Your Invoices

Sort invoices into qualifying and non-qualifying purchases.

3. Complete the HMRC Application

Use the appropriate DIY Housebuilders' Scheme application form.

4. Submit Supporting Documents

Include copies of all eligible VAT invoices and completion evidence.

5. Wait for HMRC Review

HMRC will assess your application and may request additional information before processing your repayment.

Many applicants benefit from professional support when claiming VAT on new build projects to reduce errors and avoid unnecessary delays.

Conclusion

Recovering VAT on a self-build project can significantly reduce the overall cost of constructing a new property. By understanding the rules surrounding VAT on building construction, keeping accurate records, and submitting your application correctly, you can improve your chances of receiving the maximum repayment available.

Whether you're navigating VAT on new build projects for the first time or looking for guidance on a complex VAT reclaim on new build, professional advice can make the process much smoother. 

At PHS Associates, we help businesses and property professionals understand HMRC requirements, identify eligible claims, and prepare accurate VAT submissions with confidence. If you need expert support with your next project, contact our team today to discuss how we can help.

Frequently Asked Questions


No. Your project must meet HMRC's eligibility requirements under the DIY Housebuilders' Scheme or another applicable VAT provision.


HMRC requires applications to be submitted within the specified deadline after receiving your completion certificate. Missing the deadline may result in your claim being rejected.


Usually, qualifying labour supplied by VAT-registered contractors on eligible new residential builds is already zero-rated, so there may be no VAT to reclaim.


No. Tools, equipment hire and temporary site items generally do not qualify for repayment.


Yes. HMRC expects valid VAT invoices that clearly show the supplier's VAT registration number, VAT amount and purchase details.

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