TL;DR
- Permitted development rights (PDR) are a national grant of planning permission that let certain building works and changes of use happen without a full planning application. They come from the Town and Country Planning (General Permitted Development) (England) Order 2015 (the GPDO). (GOV.UK, legislation.gov.uk)
- PDR is not a free pass. Most rights carry conditions and limitations, and many require you to apply to the council for prior approval of specific matters before you start.
- A council can remove PDR in a defined area or for a defined type of development by making an Article 4 direction. Where one is in force, you need a normal planning application. (Planning Portal)
- The rights, conditions and exclusions change frequently and differ by use class and location, so always confirm the current position with the local planning authority before you rely on PDR.
- In an appraisal, PDR can cut cost and time versus full planning, but the prior-approval process, Article 4 risk and condition compliance are still real lines, not zero. Figures below are illustrative.
"It is permitted development" is one of the most-repeated and most-misunderstood phrases in UK property. Used correctly, permitted development rights can let you convert, extend or change the use of a building faster and more cheaply than a full planning application. Used carelessly, they lead to unlawful works, enforcement and a stuck deal. Here is what PDR actually is, where it comes from, and how to treat it before you commit.
This is general information, not planning or investment advice. PDR is technical, frequently amended, and location-specific, so the only safe figure is the one your local planning authority confirms for your specific site. Every example below is illustrative.
What permitted development rights are
GOV.UK describes permitted development rights as "a national grant of planning permission which allow certain building works and changes of use to be carried out without having to make a planning application." (GOV.UK, When is permission required?) In other words, for specified kinds of development, the law has already granted permission in advance, subject to meeting the conditions attached.
The rights are set out in the Town and Country Planning (General Permitted Development) (England) Order 2015 (commonly the GPDO). Article 3 of that order grants the rights, and Schedule 2 lists them in classes covering things like householder extensions, certain commercial-to-residential changes of use, and works by particular bodies. (legislation.gov.uk) Note that the GPDO applies to England; Wales, Scotland and Northern Ireland have their own regimes.
Prior approval: permitted does not mean unconditional
Many of the more valuable rights for developers, particularly changes of use, are subject to a prior approval requirement. GOV.UK explains that "prior approval means that a developer has to seek approval from the local planning authority that specified elements of the development are acceptable before work can proceed." (GOV.UK)
The council is not deciding the principle of the development again, that is already granted by the GPDO, but it can assess specified matters such as flooding, highways, contamination, noise, or the impact on the local area, depending on the class. Practically, prior approval means:
- There is still an application, a fee and a determination period, so it is not instant or free.
- The council can refuse prior approval on the specified grounds, so the right is conditional on passing those checks.
- You should have the prior-approval decision before you start work, not after.
Article 4 directions: when councils switch PDR off
A local planning authority can remove permitted development rights in a particular area or for a particular type of development by making an Article 4 direction. The Planning Portal explains that an Article 4 direction restricts the scope of permitted development rights, is most common in conservation areas, and "does not prevent the development but instead requires planning permission to be obtained first from the council." (Planning Portal) GOV.UK adds that directions must be applied in a "measured and targeted way" based on robust evidence. (GOV.UK)
For a developer this is the single biggest trap. A change of use you assumed was permitted development may need a full planning application because an Article 4 direction covers that street or that use. Article 4 directions are common in areas where councils want to control the spread of small HMOs, which is why we flag Article 4 in our HMO conversion costs guide. Always check whether one applies before you bank on PDR.
How PDR fits a development appraisal
Used correctly, PDR can genuinely improve a scheme by avoiding the cost, time and uncertainty of a full planning application. But it does not zero out the planning line in your appraisal:
- Prior approval is still a cost and a timeline. Budget the application fee, the professional input to prepare it, and the determination period in your programme.
- Article 4 is a deal-killer risk. If a direction applies, your "PDR" scheme becomes a full planning application with all the cost, time and refusal risk that brings. Illustrative example: a conversion you modelled as a quick prior-approval route could instead need a months-long planning application, adding finance holding costs and the chance of refusal, which is a very different risk profile.
- Conditions and limitations bite. Size caps, height limits, design standards and the building's prior lawful use can all disqualify a scheme from a given class. Getting any of them wrong can make the works unlawful.
Because the GPDO is amended often and the detail varies by class and location, the right posture is to treat PDR as a route you confirm, not a route you assume.
FAQ
What legislation grants permitted development rights?
In England, the Town and Country Planning (General Permitted Development) (England) Order 2015 (the GPDO). Article 3 grants the rights and Schedule 2 lists the classes. (legislation.gov.uk)
What is prior approval?
It is a requirement, attached to many permitted development rights, that you apply to the council to approve specified elements (such as flooding, highways or noise) before work proceeds. The council can refuse on those grounds. (GOV.UK)
Can a council remove permitted development rights?
Yes, through an Article 4 direction, which withdraws specified PDR in a defined area or for a defined type of development and means a full planning application is needed instead. (Planning Portal)
Do permitted development rights apply across the whole UK?
The GPDO 2015 applies to England. Wales, Scotland and Northern Ireland operate their own permitted development regimes, so do not assume an English class applies elsewhere.
Before you rely on PDR
Permitted development can be a real advantage, but only once you have confirmed three things: that your scheme genuinely falls within a current GPDO class, that you have any required prior approval, and that no Article 4 direction removes the right on your site. Check the planning position early with the planning check, and where a PDR route changes the cost and programme, model the whole scheme through the site feasibility tool and the feasibility wizard rather than assuming the planning line is free.