This guide explains UK planning permission rules relating to boundary rules affecting common home improvement projects.
Select a project type below to explore detailed planning guidance including permitted development limits and planning considerations.
Planning rules summarised in this guide are based on UK permitted development legislation and official planning guidance published by the Planning Portal and local planning authorities.
Always confirm planning requirements with your local planning authority before starting development.
Planning permission rules relating to boundary rules can affect whether developments qualify under permitted development rights.
Many types of home improvement projects such as extensions, loft conversions and garden rooms may be built without planning permission provided development limits are followed.
However local planning authorities may impose additional planning restrictions through conservation area policies or Article 4 directions which remove permitted development rights.
Planning permission guidance explaining boundary rules rules affecting garden room projects.
Planning permission guidance explaining boundary rules rules affecting loft conversion projects.
Planning permission guidance explaining boundary rules rules affecting dormer extension projects.
Planning permission guidance explaining boundary rules rules affecting house extension projects.
Planning permission guidance explaining boundary rules rules affecting single storey extension projects.
Planning permission guidance explaining boundary rules rules affecting two storey extension projects.
Planning permission guidance explaining boundary rules rules affecting rear extension projects.
Planning permission guidance explaining boundary rules rules affecting side extension projects.
Planning permission guidance explaining boundary rules rules affecting wraparound extension projects.
Planning permission guidance explaining boundary rules rules affecting outbuildings projects.
Planning permission guidance explaining boundary rules rules affecting garage conversion projects.
Planning permission guidance explaining boundary rules rules affecting porch projects.
Planning permission guidance explaining boundary rules rules affecting basement conversion projects.
Planning permission guidance explaining boundary rules rules affecting annexe projects.
Planning permission guidance explaining boundary rules rules affecting driveway projects.
Planning permission guidance explaining boundary rules rules affecting dropped kerb projects.
Planning permission guidance explaining boundary rules rules affecting fence and wall projects.
Planning permission guidance explaining boundary rules rules affecting rooflight projects.
Planning permission guidance explaining boundary rules rules affecting change of use projects.
Planning permission guidance explaining boundary rules rules affecting agricultural building projects.
Planning permission guidance explaining boundary rules rules affecting temporary building projects.
Planning permission guidance explaining boundary rules rules affecting demolition projects.
Last updated March 2026