If you’re developing or selling a property development in the UK, you may have come across a type of insurance that protects you long-term. This insurance is known as Latent Defects Insurance and is also referred to as Structural Warranties. It provides financial protection for building projects which might reveal structural issues over time.
What is Latent Defects Insurance?
Latent Defects Insurance (LDI) is an insurance policy that covers the cost of repairing structural defects in a building that only become apparent after construction is complete. It covers defects that were hidden or undetectable at the time of practical completion, and only surface months or years later. Most policies last for 10 years, starting from the date of practical completion. 1
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Who needs this cover?
Latent Defects Insurance/Structural Warranties is usually taken out by:
- Property developers and contractors
Nearly all mortgage lenders in the UK require a recognised structural warranty before they’ll lend on a new-build property or scaled-up renovations, making this cover essential for any developer intending to sell completed buildings.
- Commercial property owners and investors
Offices, retail units, industrial buildings, and mixed-use schemes all carry latent defect risk, and investors will almost always ask for warranty cover as part of their due diligence.
Why do you need it?
If you’re a property developer or own a construction company, you’ll need this insurance for three primary reasons:
1. Mortgage lenders usually require it – most UK mortgage lenders won’t approve a loan on a new-build or recently converted property without evidence of a recognised structural warranty. Without one, you may struggle to secure financing and might struggle to sell.
2. It protects against contractor insolvency – construction firms can go out of business. If a structural defect emerges five years after completion, for example, and the original contracting business has since dissolved, pursuing a claim through litigation may be impossible. Latent Defects Insurance sidesteps this problem entirely because the claim is against the insurer, not the builder (making it a first-party insurance policy).
3. It avoids lengthy and costly litigation – proving negligence against a contractor, architect, or engineer can take years and leave you to bear expensive legal costs. Latent Defect Insurance policies are “no-fault,” meaning the insurer pays out based on the presence of a covered defect, not on establishing who was at fault.
What does Latent Defects Insurance cover?
While exact terms vary by provider, but a typical 10-year building warranty structured around Latent Defects Insurance generally covers:
- Structural elements – foundations, load-bearing walls, structural frames, floors, and roofs.
- Cost of alternative accommodation – many residential warranties include provision for temporary housing costs if a defect makes the property uninhabitable during repair.
- Contamination and subsidence in some policies, where the defect relates to ground conditions not properly addressed during construction.
- Professional fees associated with investigating and rectifying a covered defect, such as structural engineer or surveyor costs.
- Demolition and site clearance costs – if required to carry out the repair.
What Latent Defects Insurance does not cover
It’s just as important to understand the exclusions, since a lot of confusion and rejected claims stem from misunderstanding the scope of cover:
- Wear and tear – gradual deterioration from normal use or ageing is not a “defect” and isn’t covered.
- Damage from lack of maintenance – if a defect arises because the owner failed to maintain the property, (for example, blocked guttering leading to water damage), a claim could be declined.
- Pre-existing defects known before the policy was taken out – cover applies only to genuinely latent (hidden) defects, not issues the policyholder was already aware of.
- Damage caused by extensions or alterations carried out after completion – work done outside the original warranted build, by parties other than the original developer, is usually excluded unless separately warranted.
Latent Defects Insurance vs. Contractors’ Defect Liability
A Contractors’ Defects Liability (CDL) policy protects the contractor’s contractual obligation to fix defects during the Defects Liability Period (DLP), usually 6 – 24 months 2 after practical completion, or as set out in the building contract (for example, JCT contracts).
If a defect appears during this window, the contractor is contractually required to remedy it at their own cost, and the CDL policy (often an extension of Contractors’ All Risks Insurance) covers that cost. It’s essentially insurance for the contractor, protecting them against the expense of honouring their contractual snagging obligations.
Latent Defects Insurance (LDI) is taken out for the benefit of the building owner (and future owners), covering structural defects that emerge over a much longer period.
As mentioned before, it’s no-fault: the policyholder claims directly against the insurer without needing to prove the contractor was negligent or even locate them, since the contractor may have gone out of business years later.
Why this matters
CDL is short-term and only useful while the contractor is around and solvent. LDI exists precisely to cover the gap after the Defects Liability Period ends and the contractor’s direct liability lapses, which is why lenders and long-term owners often rely on the 10-year structural warranty rather than the contractor’s own defects cover.
Why get cover from DCR?
Before buying, selling, or developing any property, check what warranty is in place, confirm the remaining term, and read the exclusions carefully. A 10-year building warranty is a powerful safety net, but only if you understand exactly what it does, and doesn’t, protect you against.
If you’re in any doubt as to whether you need this insurance, or have queries about how you’re protected, get in touch.
To make an enquiry about Latent Defects Insurance / Structural Warranties, contact our expert team today. We’ll be able to explain the policies available, and provide you with a FREE, no-obligation insurance quote.
Call: 01277 844 360
Or contact us online: https://directcorporaterisks.com/contact/
FAQ’s
- Do I need Latent Defects Insurance if I already have Buildings Insurance?
Yes. Buildings Insurance and Latent Defects Insurance cover different risks. Standard Buildings Insurance protects against events like fire, flood, and storm damage, while Latent Defects Insurance specifically covers hidden structural defects caused by design issues, workmanship, or materials during construction. The two should run alongside each other, not in place of one another.
- Can I get a mortgage on a new-build property without a Structural Warranty?
It can be difficult. Most UK mortgage lenders require a recognised Structural Warranty before approving a loan on a new-build, converted, or recently renovated property.
- Does a Structural Warranty transfer to a new owner if I sell the property?
Yes, in almost all cases. Structural Warranties are attached to the building, not the original buyer, so the remaining years of cover automatically pass to any subsequent owner if the property is sold within the 10-year term. This is one of the reasons warranties are valued so highly during property transactions and conveyancing checks.