Planning permission explained
Full, outline, householder, and permitted development, what the different routes mean and which one you are looking at.
5 min read · Updated Tuesday, 1 September 2026
The main types
The type tells you how settled the proposal is, which matters when you are deciding whether to engage.
- Householder, extensions and alterations to a single home. Small, quick, and decided by officers.
- Full, everything is specified and the decision settles the whole scheme.
- Outline, establishes the principle only, with details ("reserved matters") to follow. Objecting to the principle is only possible at this stage.
- Reserved matters, the detail following an outline permission. The principle is already settled and cannot be reopened.
- Change of use, the building stays, what happens inside it changes.
- Listed building consent, required in addition to planning permission for work to a listed building.
- Prior approval, for permitted development where the council may only consider specific, limited issues.
Why "conditions" and "amendments" matter less
A large share of any register is made up of applications to discharge conditions or make non-material amendments to a permission that already exists. The principle has been decided; only the detail is in play.
PlotSignal filters these out by default for exactly that reason. You can turn them back on if you are tracking a specific site through to completion.
What "major development" means
Major development has a statutory definition: ten or more dwellings, or a site of one hectare or more, or over 1,000 square metres of floorspace.
It matters because major applications get a longer determination period, wider consultation, and are much more likely to go to a planning committee where the public can speak.
Hear about it while you can still act
Read next
What is a planning application?
What a planning application actually is, who sees it, and what happens between submission and decision.
ReadWhat counts as a valid objection
The material planning considerations an officer must take into account, and the common arguments that carry no weight at all.
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