Protection for Your House Extension, Before Work Begins

House extensions carry real financial exposure — larger contract values, staged payments, and months of ongoing work. Home Improvements Guarantee connects homeowners with vetted contractors who arrange Insurance Backed Guarantees on extension projects, covering the same categories as our loft conversion guarantees: deposit, work-in-progress, materials, and workmanship.

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A staged project needs staged protection. Ask your contractor for the deposit protection policy document before you pay anything, and confirm in writing what work-in-progress cover applies if the build stalls partway through.