What this checker covers
The result screens the principal England limits for height, eaves, boundary distance, position and garden coverage. It also flags listed buildings, designated land, removed rights and sleeping use for an individual check.
What it cannot decide
It cannot inspect your title, planning history, local Article 4 directions, ground levels or the exact legal use. A result saying likely permitted development is not a planning decision.
Measure before answering
Use the manufacturer's dimensioned drawing. Measure the shortest distance from any part of the building to the boundary, and include existing extensions and outbuildings when estimating how much land around the original house is covered.
Official source
The England screening logic follows the Planning Portal outbuilding guidance, checked 10 November 2026. Wales, Scotland and Northern Ireland have their own official guidance and different rules.