The ground
Lambeth Group · Clay-with-flints · chalk
Stoke Row’s centre is mapped on the Lambeth Group, with no deposit over it; the British Geological Survey describes the group as variable, mainly clay, in places silty or sandy.
Within half a kilometre the picture changes fast. To the south, south-west, west and north-west, chalk capped by Clay-with-flints is mapped; to the east, Clay-with-flints over the Lambeth Group; and to the north and north-east, chalk with nothing over it. So a garden could be heavy clay, flinty clay or open chalk, depending on where in the village it is.
Planning
Inside the Chilterns · a conservation area 250 m off
Stoke Row is about 3.4 km inside the Chilterns National Landscape, and so is the whole parish. That makes it designated land: a side outbuilding needs planning permission, and permitted development holds the total for buildings or enclosures beyond 20 metres of the house at 10 square metres.
The village’s mapped centre lies about 250 metres outside the Stoke Row Conservation Area. If you live inside it, give South Oxfordshire District Council six weeks’ notice before tree work (trees below 75 mm across at 1.5 m height don’t need it), and check before taking down a fence, wall or gate.