Custom Warranty

Custom Build Home Warranty

10-Year Structural Warranty for Custom Build Projects

Protek’s Custom Build Home Warranty is designed to support developments where ownership transfers during construction — a key requirement for many custom and self-build schemes. Whether you’re a developer, self-builder, or part of a local authority-backed initiative, this policy provides peace of mind with full structural cover from day one.

The warranty adapts to the evolving ownership model and ensures your project remains lender-friendly and compliant with funding or exemption requirements.

Key Inclusions At A Glance

Tailored Cover for a Growing Development Model

The Custom Build model is growing fast across the UK, with more councils and developers supporting buyer-led housing solutions. This often means the buyer becomes legally responsible for the property part-way through construction — and that creates a gap traditional warranties don’t cover.

Protek’s Custom Build Warranty is designed specifically for this structure, giving both developers and future homeowners the protection they need at every stage of the build.

Whether you’re working with a single client or delivering a multi-unit custom build site, this flexible cover ensures key parties are protected and your funding partners stay on side.

Built to Support Self-Build Mortgages & Planning Requirements

Many custom build projects rely on specialist lending or eligibility for CIL exemptions. This warranty meets the requirements of most self-build mortgage providers and supports stage-based payment releases through technical audit certification.

Our flexible approach also supports projects under public land release or Right to Build schemes.

Learn More About Our Custom Build Warranty

Get quick answers to common questions about our custom build home warranty, including how they work, what they cover, and why they matter on your project.

What makes a Custom Build Warranty different from a standard structural warranty?

This warranty is designed to reflect the unique nature of custom build projects — where ownership may transfer mid-build. It ensures cover continues seamlessly regardless of who holds the legal interest during each stage of construction.

Is this warranty suitable for self-build mortgage and CIL exemption purposes?

Yes. The Custom Build Warranty meets lender requirements for self-build mortgages and satisfies CIL exemption criteria. The lender’s interest can also be noted directly on the policy.

What happens if the builder or developer ceases trading during or after construction?

The warranty provides full risk transfer and protection for the homeowner — even if the original builder is no longer operating. Defects occurring in the first two years are covered, followed by full structural cover through to year 10.

Is stage release certification available for lenders?

Yes. Stage release certification can be included as part of the technical audit process, supporting staged payments during the build.

Does the policy include cover for contaminated land?

It does. If statutory remediation is required due to harmful substances on-site, the policy provides cover for the cost of treatment, isolation, or removal in a controlled manner.

Are building regulation failures covered?

Yes, key areas like structural integrity, fire safety, drainage, hygiene, and glazing safety are included — protecting against non-compliance.

What other additional cover is included?

The policy also includes protection for:

Alternative accommodation
Additional costs and expenses
Removal of debris
Professional fees

Can’t find the answer to your question? Visit our Frequently Asked Questions page.

Ready to Secure Your Project with a Protek Warranty?

Our flexible, lender-approved structural warranties help keep your build moving — backed by expert support from day one.