Rule 6 letter
A Rule 6 letter or notice refers to a stage in the process of obtaining permission for developments which are categorised as Nationally Significant Infrastructure Projects (NSIP). The process is referred to as a Development Consent Order (DCO) and the Rule 6 letter or notice is issued by the Planning Inspectorate giving Notice of the Preliminary Meeting concerning the NSIP matter under consideration, normally sent to all relevant consultation parties. It precedes a Rule 8 Notice which formally opens the examination stage of the process by confirming the procedural decisions made following the preliminary meeting.
[edit] Related articles on Designing Buildings
- Breaking Barriers in Infrastructure - perspectives from the profession
- Crossrail 2.
- Engineers make policy decisions a reality.
- Environmental Impact Assessment.
- Environmental Statement.
- Generation nuclear.
- Instrumentation operated in the national interest.
- Is a bridge needed between Scotland and Northern Ireland?
- Listed building consent.
- Localism Act.
- Major Projects Authority.
- National Infrastructure Plan.
- National Infrastructure Planning Reform Programme.
- Nationally Significant Infrastructure Project initiatives reach milestone.
- Nationally Significant Infrastructure Projects.
- Permission for mining or working of minerals.
- Planning Act 2008.
- Planning permission.
- Rule 8 letter.
- Safeguarding land.
- Wind farm.
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Gasholders: a history in pictures. Book review.
Recognition, influence and growth
SocEnv identifies three strategic pillars in new strategy to 2045.
Discover the future of roofing, cladding and insulation.
New guidance for professional practice, cultural change and regulation in social housing.
The heritage of nuclear and conventional power stations.
New measures to stop people being ripped off
Government to protect families from cowboy builders and aggressive bailiffs.
New Futurebuild showcase brings an innovation-first approach.
National Planning Policy Framework
Understanding the 2026 changes.
ECA's public affairs priorities
Member consultation opens to shape priorities for 2027 to 2030.
Dutyholder responsibilities from 1 July 2026.
Where performance meets practice
The Building Envelope Stage at UKCW Birmingham.
CIAT publishes briefing on planning reforms.

















