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A Guide to Building Warranties on New Build Homes

Mar 21, 2025
A guide to building warranties on new build property
Purchasing a new build property offers homebuyers the security of a new build home warranty. Understanding your warranty coverage is important to protect your investment. Our detailed guide will cover everything you need to know. 

What is the NHBC warranty?

The National House Building Council (NHBC) warranty, also known as the Buildmark, is the UK’s leading independent provider of new build home warranty and insurance. They protect buyers by setting the standard requirements for the design, materials and quality of the construction of new homes. They inspect developments at key stages during their construction to ensure that the properties are meeting the set standards.
 

What is covered by the NHBC warranty? 

The NHBC warranty and insurance policy is designed to give you peace of mind by providing the following cover: 
 

Insolvency cover

During the initial construction period, the NHBC warranty protects your deposit if your builder becomes insolvent and cannot finish the construction of your home. This coverage begins from the exchange of contracts and continues until the property is completed. 
 

Builder warranty period

The first two years after completion are known as the builder warranty period. During this time, the builder is responsible for rectifying any defects that don’t meet the NHBC technical requirements at their own expense. This includes issues like cracking in walls, problems with internal finishes or faults with drainage systems. 
 

Insurance cover

In the eight years that follow the builder warranty period, the NHBC provides insurance coverage against specific structural defects, including damage to the property’s foundations, roof or external walls. 
 

How long does the NHBC warranty last?

The NHBC warranty lasts for 10 years from the date of the property’s completion certificate.
 

What do NHBC warranties not cover?

While they are comprehensive, NHBC warranties don’t cover everything. Exclusions typically include: 
 
General wear and tear 
Weather damage 
Natural shrinkage of materials 
Minor cracks that appear during settlement 
Damage caused by homeowner modifications 
Problems arising from lack of maintenance 
Issues covered by other insurance policies
 

What should I do if I notice a defect?

If you discover any issues, let your builder know as soon as possible. Whenever you speak with them, either in person, on the phone or via email, ensure you keep records you can refer to. If they fail to put things right or dispute what should be done, you can use the NHBC resolution service for the first two years of owning your home. The insurance part of your building warranty will cover any damage caused by defects after the first two years. 
 

Should I take out buildings insurance too?

The NHBC warranty is not a substitute for buildings insurance. While the warranty covers structural defects and specific issues related to the build quality, buildings insurance protects against different risks like fire damage, flooding, burst pipes or theft and vandalism. It’s recommended to have both an NHBC warranty and buildings insurance to ensure your home is fully protected. 
 
 
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