What do regulated water and drainage searches cover for homebuyers?
Public sewer maps, connection questions, and build-over agreements buyers need before extending kitchens or loft spaces in England.
Published: 18 Apr 2026 · Updated: 18 Apr 2026 · 10 min read
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Utilities underpin value
Mortgage valuers like clear stories on foul drainage and surface water routes even if searches look unexciting.
Look for
Public sewer proximity to proposed extensions.
Consents for historic build-overs.
Surface water billing cues where sewers sit.
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