What does a summer like this mean for my house?

• River and sea flood risk at the building, defended and undefendedEA NaFRA2
• Surface water flood risk on a 2-metre grid, with depth bandsEA RoFSW
• Flood Zone for planning purposesEA Flood Map for Planning
• Every flood recorded at this location since 1946EA Recorded Flood Outlines
• Ground height to the centimetre, and height relative to the lowest land within 250mEA 1m LIDAR
• Distance and drop to the nearest watercourseOS Open Rivers + LIDAR
• Where water collects on the plotLIDAR terrain + 2m surface water grid
• Expected rise in peak rainfall and river flow for this catchment, 2050s and 2080sEA climate change allowances
• Coastal erosion projections to 2055 and 2105, and whether the authorities intend to defend this frontageEA NCERM2 + Shoreline Management Plans
• Live flood warnings and river levelsEA real-time API

Not included  Groundwater flooding (no usable free national dataset), and sewer and drain capacity (held by water companies, not published).

• Geology under the building, and whether it is shrink-swell prone clayBGS 1:625,000
• Every tree within influencing distance: height, canopy spread, distance to the wallLIDAR DSM canopy model
• How dry this summer has been against the long recordMet Office HadUK-Grid, 1km
• Soil moisture deficit trend and how it is projected to changeHadUK-Grid + UKCP
• Slope and ground movement indicators across the plotLIDAR terrain
• Radon potentialUKHSA / BGS Indicative Atlas, 1km
• Building age and construction, which governs foundation typeEPC register

Not included  A formal subsidence rating. The definitive dataset, BGS GeoSure, costs roughly £208,000 to licence nationally. You get an indicative read from free geology plus measured tree proximity, clearly labelled as such.

• Days above 28°C and nights above 20°C now, against the 1990s baselineHadUK-Grid, 1km
• The same, projected to the 2050s and 2080sUK Climate Projections
• Which windows take the afternoon sun, by orientation and glazed areaBuilding footprint + EPC
• Every roof face: direction, pitch and usable areaLIDAR DSM minus DTM
• What overshadows each roof face, including neighbouring buildings and treesLIDAR DSM ray-trace
• Solar output per roof face, and payback at the current price capPVGIS + Ofgem
• Your energy rating against every other home on your streetEPC register
• Your floor area, wall type, glazing and insulation, with the weak points rankedEPC register

Not included  A predicted indoor temperature, or a formal CIBSE TM59 overheating assessment. Solar payback needs an install-cost basis that is not open data.

• Permitted development rights for this property type, with the size limits that applyLegislation + property type
• Conservation area statusPlanning Data for England
• Article 4 directions, which remove permitted developmentPlanning Data for England
• Listed building status and curtilageHistoric England NHLE
• Tree preservation ordersPlanning Data for England
• Green belt, National Park, National LandscapePlanning Data for England
• Scheduled monuments and protected heritage sitesHistoric England
• Flood zone, which constrains what you can buildEA Flood Map for Planning
• Plot area, building footprint, and how much of the plot is already built onOS + Microsoft footprints + LIDAR
• Garden depth, ridge height and eaves height, which set extension limitsLIDAR
• Your internal floor area against your street and postcode averageEPC register
• What that floor area gap is worth at local sold prices per m²HM Land Registry Price Paid + UK HPI

Not included  Planning application history. There is no national record, it sits in roughly 330 separate council systems. Where your council publishes usefully we say so; where it doesn’t, we say that too.