This guide explains planning permission rules affecting two storey extension developments in Brentwood.
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.
The ZoI identifies the distance within which new residents are likely to travel to
Roof alterations must comply with national permitted development rules.
You can support, object or comment on an application during its consultation period. Comments must be clear, concise and focused on material planning issues (see below).
Information on Listed buildings, conservation areas, heritage assets and tree preservation orders (TPOs)
Information on Listed buildings, conservation areas, heritage assets and tree preservation orders (TPOs)
Last verified 2026-01
UK permitted development legislation allows many two storey extension projects without planning permission provided certain limits are followed.
However local planning authorities such as those covering Brentwood may impose additional planning controls through conservation area policies or Article 4 directions.
Many two storey extension projects in Brentwood may fall under permitted development rights if they remain within national planning limits.
Development must comply with national permitted development height limits.
The ZoI identifies the distance within which new residents are likely to travel to
Yes. Additional planning restrictions may apply in conservation areas or where Article 4 directions remove permitted development rights.
Planning applications for two storey extension projects in Brentwood are handled by the local planning authority covering Brentwood, Essex.
For official planning advice consult the council planning portal for your area or visit the UK Planning Portal.
This guide summarises planning rules affecting two storey extension developments in Brentwood.
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