What is a structural warranty on a new build home and what does it cover?

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Structural warranties exist because new build homes carry unique risks compared with established properties -- there is no long track record of how the building performs, and buyers cannot rely on years of previous owners having identified and resolved issues, so warranty schemes step in to give both buyers and mortgage lenders confidence. **The two-stage structure** Most UK new build warranties (NHBC Buildmark being the best known, alongside Premier Guarantee, LABC Warranty, and others) follow a similar two-stage structure: a two-year defects insurance period, during which the BUILDER is responsible for fixing reported defects (covering things like faulty wiring, leaking pipes, poorly fitted doors and windows), followed by a longer structural insurance period, typically extending to ten years from the original build date, covering major structural defects only (like subsidence, structural movement, or defective foundations), where the INSURER becomes responsible if the builder is unable or unwilling to fix the issue, or has ceased trading. **Why mortgage lenders require it** Virtually all UK mortgage lenders require a recognised structural warranty before lending on a new build property (and often for the first ten years of any property's life), since it protects both the lender's and buyer's financial exposure to serious defects that could otherwise be catastrophically expensive to fix without any recourse. **What is NOT covered** Structural warranties generally do not cover normal wear and tear, damage caused by the homeowner's own alterations or lack of maintenance, or issues arising from the buyer's own furnishings or use of the property -- and cosmetic snagging issues after the initial two-year period typically fall outside the warranty's scope entirely, becoming the homeowner's own responsibility like any other property. **Making a claim** During the first two years, defects should be reported directly to the builder's customer care team; if unresolved, most schemes provide a resolution or dispute service, and ultimately the warranty provider can be asked to step in. After the initial two years, claims for genuinely structural issues go through the warranty provider's insurance claims process rather than the builder directly. **Cost and who pays** The cost of the structural warranty is built into the price the developer charges for the new build (rather than being a separate cost the buyer pays directly), and it is generally arranged and registered before the property is marketed for sale, since developers need it in place to sell to buyers using mortgage finance. **Buying a new build resale within the warranty period** If you buy a new-ish home (say, five years old) that still has remaining structural warranty coverage from when it was originally built, the warranty typically transfers to you as the new owner for the remainder of its term -- worth checking and requesting documentation of this during conveyancing on any property under ten years old. **Practical tip** Register and keep your structural warranty documents safely, and note the exact dates the two-year and ten-year periods run from (usually the original build completion date, not your purchase date if buying second-hand within the warranty period), since claims outside these windows are generally not covered.

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