This guide explains planning permission rules affecting dormer extension developments in Havering.
Most householder development follows national permitted development rules unless local restrictions apply.
Development must comply with national permitted development height limits.
Extensions must comply with national permitted development depth limits.
Impact on the amenities of neighbours (eg loss of daylight, sunlight and privacy)
Roof alterations must comply with national permitted development rules.
Materials should be similar in appearance to the existing house.
Additional planning restrictions may apply in conservation areas.
You can search for any planning, listed building or advertisement appeals that have been lodged since 2003.
Last verified 2026-01
UK permitted development legislation allows many dormer extension projects without planning permission provided certain limits are followed.
However local planning authorities such as those covering Havering may impose additional planning controls through conservation area policies or Article 4 directions.
Many dormer extension projects in Havering may fall under permitted development rights if they remain within national planning limits.
Development must comply with national permitted development height limits.
Impact on the amenities of neighbours (eg loss of daylight, sunlight and privacy)
Yes. Additional planning restrictions may apply in conservation areas or where Article 4 directions remove permitted development rights.
Planning applications for dormer extension projects in Havering are handled by the local planning authority covering Havering, Greater London.
For official planning advice consult the council planning portal for your area or visit the UK Planning Portal.
This guide summarises planning rules affecting dormer extension developments in Havering.
Planning regulations may change and additional local planning policies may apply. Always confirm planning requirements with your local planning authority before starting development.
Last updated March 2026