Reserved matters: what it means in planning
Outline permission settles the principle. Reserved matters are the five details left for later approval, with a three-year clock attached.
Reserved matters are the details of a development that an outline planning permission leaves undecided: access, appearance, landscaping, layout and scale. When a council grants outline permission it settles the principle of building on that site. Those five matters are then submitted later, in a separate application, and have to be approved before work can start. So if a letter has landed about a reserved matters application near you, the principle has already been agreed and what is on the table now is how the scheme will look and how it will work.
The term is defined in law, which is why it means the same thing in every English council.
The five matters and what each one covers
The Town and Country Planning (Development Management Procedure) (England) Order 2015 defines all five in article 2. They are narrower than most people expect.
| Matter | What it covers |
|---|---|
| Access | The position and treatment of vehicle and pedestrian access points, and how the site connects to the network beyond it |
| Appearance | The visual impression a building or place gives, including built form, materials, decoration, lighting and texture |
| Landscaping | Treatment of land to protect or improve amenity, including planting, screening, terracing and hard surfacing |
| Layout | Where buildings, routes and open spaces sit in relation to each other and to buildings outside the site |
| Scale | The height, width and length of each building proposed |
Anything outside that list is not a reserved matter. Drainage, ecology, noise, contamination and parking numbers are usually controlled by planning conditions instead, which is a separate process with separate deadlines. Confusing the two is the commonest mistake made by people following an application.
Where outline permission sits in the system
An outline application asks the council to agree that development of a stated type and rough quantity is acceptable in principle. Under article 5 of the 2015 Order an applicant can reserve any or all of the five matters. Most reserve appearance, landscaping, layout and scale, and fix access at the outline stage, a choice we look at in more detail when weighing outline against full permission, because access is what the highway authority cares about and nobody wants to win an outline and then lose on the junction.
The council can come back and say it needs more detail on a reserved matter before it can deal with the outline application at all. That happens where the principle cannot honestly be judged without knowing, say, how tall the buildings would be.
Outline permission is still a real permission. It cannot be withdrawn because the council changes its mind, and the principle it establishes binds the later decision.
The time limits that catch people out
Section 92 of the Town and Country Planning Act 1990 sets the default clock. Unless the council imposes different periods, an application for approval of reserved matters must be made within three years of the outline grant. Development must then begin within whichever is later of five years from the outline grant or two years from the final approval of the last reserved matter.
Miss the three-year deadline and the outline permission lapses. There is no discretion to extend it and no mechanism to revive it. The site owner starts again with a fresh application, under whatever local plan and national policy apply by then.
Councils quite often shorten those periods by condition, so read the decision notice rather than assuming the statutory default. On phased schemes the reserved matters are usually submitted phase by phase, and the condition wording will say whether each phase needs its own submission within the same overall window.
How a council decides a reserved matters application
The officer is deciding detail, not principle. They cannot refuse because they have decided the site should stay a field, and they cannot use the application to impose a lower number of houses than the outline allowed. What they can do is refuse a layout that turns its back on the street, a scale that overbears the house next door, or a landscaping scheme that plants three trees where the approved parameter plan showed a belt of woodland.
Parameter plans matter enormously here. If the outline was granted with a plan fixing maximum heights, development zones and access points, the reserved matters have to sit inside those limits. A submission that breaches them is not a reserved matters application at all, and the council will tell the applicant to apply for a new permission or to vary the outline first.
Most councils publicise reserved matters applications and accept comments on them. The notice period and the method vary, so check the council's website rather than waiting for a letter.
An illustrative example on a village edge
Take an illustrative case. Outline permission is granted for up to 40 dwellings on a field at the edge of a village, with access approved and a parameter plan capping buildings at two storeys. Two years later the developer submits appearance, landscaping, layout and scale.
Neighbours object that 40 houses are too many for the village and that the local school is full. Neither point can succeed, because both go to the principle and the quantum, which the outline settled. An objection that the layout puts a three-storey block of flats on the boundary would succeed, because three storeys breaches the parameter plan. An objection that the proposed rear gardens are 6m deep where the council's own design guide asks for 10m goes to layout, and the officer has to deal with it.
That is the shape of nearly every reserved matters dispute. The winning points are the ones tied to one of the five matters or to the approved parameters.
Where the term is misunderstood
Approval of reserved matters is not a new planning permission. It is approval of details under the permission already granted, which is why the principle cannot be revisited and why a refusal appeal is argued on detail alone.
It is also not the same as discharging conditions. A decision notice on an outline permission will usually carry both: reserved matters to be approved under section 92, and pre-commencement conditions requiring details of drainage, archaeology or construction traffic. They are submitted separately, sometimes to different officers, and a scheme can have its reserved matters approved while its drainage condition is still outstanding.
And a reserved matters approval cannot be used to change something the outline fixed. Where a developer wants a different access or a taller building, the route is a fresh application or a variation of the outline permission, not a generous reading of the word "scale".
Related terms and what to do next
Permission in principle is a different animal: a separate consent route that establishes principle for small housing sites and is followed by a technical details consent rather than by reserved matters. Our explainer on permission in principle sets out when it is worth using. Biodiversity net gain also lands differently on outline schemes, because the gain plan and the metric have to keep pace with the phasing, which we cover in the piece on net gain and phased permissions.
If a reserved matters application affects you, the practical sequence is short.
- Read the outline decision notice and its conditions, which are on the council's public register, and note the parameter plans.
- Work out which of the five matters your concern falls under. If it falls under none of them, look for a condition that covers it instead.
- Comment within the publicity period, quoting the drawing number you are objecting to.
- Ask the case officer whether the application is going to committee or will be decided by an officer under delegated powers.
For a fuller treatment of what each matter is expected to contain in a submission, see our guide to layout, scale and appearance.
Applicants working the other way round need the supporting documents the council's validation list asks for at reserved matters stage, which for most schemes means a design and access statement plus whatever the outline conditions require. You can browse the report types by category to see what a submission usually carries.
This is general guidance, not legal advice. Check the position with your local planning authority or a qualified professional before relying on it. PlanScope provides AI-assisted draft reports for planning applications. Reports should be reviewed before submission. We do not guarantee planning approval.
Frequently asked questions
What are the five reserved matters?
Access, appearance, landscaping, layout and scale, as defined in article 2 of the Development Management Procedure Order 2015. Access covers the position and treatment of entry points. Appearance covers visual impression and materials. Landscaping covers planting and hard surfacing. Layout covers the arrangement of buildings and spaces. Scale covers the height, width and length of each building.
How long do you have to submit reserved matters?
The default under section 92 of the Town and Country Planning Act 1990 is three years from the grant of outline permission. Councils can and often do impose a shorter period by condition, so read the decision notice. If the deadline passes without an application, the outline permission lapses and cannot be revived.
Can a council refuse reserved matters after granting outline permission?
Yes, but only on the detail of the matters reserved. It cannot refuse because it has changed its mind about the principle or the number of homes. A layout that breaches an approved parameter plan, a scale that harms neighbours or a landscaping scheme that falls short of what was shown can all be refused.
Can neighbours object to a reserved matters application?
Yes. Most councils publicise reserved matters applications and take comments. Objections that go to the principle of development, the number of units or the loss of the field will carry no weight, because those were settled at outline. Comments on layout, overlooking, building height and planting are the ones an officer has to address.
Is approval of reserved matters the same as discharging conditions?
No. They are two separate processes that often run in parallel. Reserved matters are the five detail matters left open by the outline permission. Conditions are the extra requirements attached to that permission, such as drainage details or a construction management plan, and each has its own submission and its own fee.
Sources and further reading
This article is general guidance about the planning system in England and, where stated, the rest of the UK. It is not legal or professional advice. Check your local planning authority’s validation requirements and take professional advice for your specific site.