The information you need exists. Getting at it is the problem.

Which of these searches does my address actually need?

Your conveyancer sends a quote listing searches you have never heard of, at £25 to £250 each, and no way to judge which ones this property genuinely triggers.

Joins coalfield reporting areas × EA flood zones × NaFRA2 surface water × UKHSA radon grid × BGS ground stability × EA historic landfill

Everything under the house that is not in the listing.

Old mine workings under the garden, ground that is measurably moving, flood likelihood the planning zone does not show, a closed landfill two streets away. All recorded by somebody, none of it anywhere a buyer would look.

Joins Mining Remediation Authority mine entries × NaFRA2 flood likelihood × BGS GeoSure × UKHSA radon × Land Registry sales × EPC × police.uk × Ofsted × Ofcom

Where the sea is going, and who will stop it.

Whether the defences in front of your house are meant to be maintained is decided in a Shoreline Management Plan — hundreds of pages of PDF per plan, and the policy in thirty years is often not the policy today.

Joins EA NCERM recession projections × Shoreline Management Plan policy per epoch × tide-gauge sea-level trend × InSAR ground motion

Draw the red line. See what it costs you.

Everyone will tell you Green Belt is difficult. Nobody will tell you the number, so you cannot price the risk of an application before you have already spent on it.

Computes approval rates from REPD recorded outcomes × planning.data.gov.uk designations × 1 m LIDAR earthworks × grid capacity × PVGIS yield

Can you legally metal-detect there? Check before you ask, ask before you dig.

Permission and legality decide everything in detecting, and neither is visible from the gate: a scheduled monument looks like any other field but detecting on it is a criminal offence, "open access" land is not open to detecting, and nobody can tell you whose land it is.

Joins scheduled-monument and heritage registers × Natural England access and common land × EA 1 m LIDAR terrain × drought-summer satellite imagery of the same square

How deep is the water table here — and would a borehole yield?

Boreholes, basements, soakaways and land purchases all hang on the water table, and everyone guesses at it — measuring once, in the wrong season, at the wrong spot. The Environment Agency measures it at ~3,600 boreholes, some logging since the 1960s, and none of that is in any property pack.

Joins EA groundwater monitoring boreholes (depth to water, seasonal range, decades of records) × BGS hydrogeology and aquifer yield × EA source protection zones × ground hazards

Can I extend this house — and what will the ground and the trees make me build?

Householder permitted-development rights vanish in conservation areas, under Article 4 directions and next to listed buildings, and a clay subsoil with a big tree nearby can turn a 1 m footing into a 2.5 m one. People find out after paying an architect.

Joins planning.data.gov.uk designations at and around the point, BGS 1:50k geology, EA 1 m LIDAR canopy heights, OSM footprints and three years of householder decisions within 100 m