Outline planning permission: the first-stage approval and what it leaves undecided
SaveOutline planning permission is a first-stage approval that settles whether a site can be developed for housing, but leaves design details for a later application. It is not a green light to start building. Instead, it establishes the principle of development—how many homes, the access route, the broad layout—while deferring questions of appearance, scale and landscaping to what is known as a reserved matters application. This two-stage route is common for larger housing sites where a landowner or developer wants certainty before committing to detailed design work. The rest of this guide explains what outline permission covers, how it differs from full approval and what happens after it is granted, so you can follow the progress of a development near you or understand the planning notices that arrive in your street. Albert Street sets out the local planning process in plain terms.
The principle and the detail
Outline permission answers the question "Can this site be developed for housing?" without requiring a finished architectural design. The application includes enough information to judge the main impacts—vehicle movements, the number of homes, drainage strategy, whether the site lies in a flood zone—but it does not specify window styles, brickwork, roof pitches or garden boundaries. Those are the reserved matters, held back for a second application once outline consent is in place.
A developer or landowner may choose this route to test the council's position before spending on architects and engineers. Once outline permission is granted, the site has planning value, which makes it easier to finance detailed design or to sell the land on to a housebuilder. The approval will carry conditions—ecology surveys, highway improvements, contribution amounts—but it does not yet give permission to dig foundations.
What an outline application must include
Even at outline stage, the council needs certain facts. The application will state the number of homes proposed, the points where vehicles enter and leave the site, and any areas to be kept as open space or buffers. It may include an indicative layout—a sketch showing how housing parcels could be arranged—but that layout is not binding. What matters is the maximum number of dwellings and the access points, because those determine traffic, infrastructure cost and the development's fit with the local plan.
The application is accompanied by reports: a transport assessment, an ecology survey, a flood-risk appraisal if the site lies near a watercourse. These documents prove that the principle of development can be managed safely. Design and appearance are expressly reserved, so the council cannot refuse outline permission on the grounds that a proposed house type is out of character—unless character affects the principle itself, such as density or building height.
Outline permission compared with full permission
Full planning permission settles everything in one application: site layout, house designs, materials, landscaping, boundary treatments. If the council grants it, construction can begin as soon as any pre-commencement conditions are discharged. Outline permission, by contrast, is a two-stage process: outline first, then reserved matters. The table below sets out the practical differences.
| Outline permission | Full permission |
|---|---|
| Establishes principle only; design details deferred | Approves complete scheme in one decision |
| Reserved matters application required before building | Construction may start once conditions met |
| Lower upfront cost; less design work at application stage | Higher upfront cost; full architectural drawings needed |
| Common for large sites or speculative land promotion | Usual route for smaller sites and known schemes |
Developers sometimes prefer full permission when the design is settled and the site is straightforward, because it avoids a second round of consultation and saves several months. Outline permission is chosen when the landowner wants to secure value before investing in detail, or when a site's constraints—topography, ecology, access—need to be resolved before house types can be finalised.
Reserved matters: the second application
Once outline permission is granted, the developer must return with a reserved matters application that fills in the missing detail. The reserved matters are usually appearance, landscaping, layout and scale—sometimes shortened to "ALLS" in planning notices. In practice, this means elevations, floor plans, boundary treatments, tree planting, street furniture and materials palettes.
The council assesses the reserved matters against the conditions attached to the outline consent and against its design policies. It cannot revisit the principle of development or the number of homes: those were settled at outline stage. However, it can refuse the reserved matters if the design is poor, if the layout creates unsafe junctions or if the landscaping fails to mitigate the visual impact the outline consent assumed would be managed.
Time limits
Outline permission expires if no reserved matters application is submitted within a set period, typically three years. Once reserved matters are approved, development must begin within two years, though the council may vary these deadlines by condition. A site with outline consent but no reserved matters application is not yet a committed development; the permission may lapse if the developer does not act.
Conditions attached to outline consent
Outline planning permission almost always carries conditions. Some must be discharged before any work starts—pre-commencement conditions—while others apply at later stages. Common pre-commencement conditions include submission of a construction management plan, approval of surface-water drainage details and confirmation of ecology mitigation measures such as bat boxes or hedgerow planting.
Other conditions may require affordable housing to be built at a certain phase, or a new junction to be completed before a specified number of homes are occupied. These are known as trigger points, and they tie infrastructure delivery to the pace of housebuilding. Conditions are legally binding; breaching them can lead to enforcement action or, in serious cases, revocation of the permission.
Section 106 obligations at outline stage
A Section 106 agreement is often signed alongside the grant of outline permission. The agreement sets out the developer's contributions—affordable housing, school places, healthcare facilities, highway works—and the triggers that determine when each obligation must be met. Because the outline application fixes the number of homes, the council can calculate the infrastructure cost and negotiate the contributions before detailed design begins.
The Section 106 is a legal contract between the council and the landowner. It binds the land, so if the site changes hands after outline consent is granted, the new owner inherits the obligations. Reserved matters applications do not reopen the Section 106 unless the number of homes increases beyond the outline consent, in which case a deed of variation may be needed.
Reading an outline planning notice
When an outline application is submitted, the council posts a site notice and writes to neighbouring properties. The notice will state that certain matters are reserved, and it will describe the proposal in terms of dwelling numbers, access points and site area. You will not see elevations or a detailed layout at this stage, but you can view the indicative plan, the transport assessment and the design and access statement on the council's planning portal.
If you wish to comment or object, the consultation period is the same as for full applications—typically three weeks. Your representations should address the principle of development: traffic impact, loss of open space, conflict with the local plan, harm to protected species. Objections about brick colour or window style are premature at outline stage, because those details have not yet been proposed.
Steps to follow a development from outline consent to completion
Once outline permission is granted, you can track the scheme's progress through the council's planning portal. The steps below show what to look for and when each stage typically occurs.
- Check the decision notice. Read the conditions attached to the outline consent and note the time limit for submitting reserved matters. The decision notice is a public document, available on the council's website under the original application reference.
- Set up an alert for reserved matters applications. Many councils offer email alerts when a new application is registered on a site you are watching. Reserved matters applications reference the original outline consent, so the link is clear in the online record.
- Review the reserved matters submission. When the application arrives, examine the site layout, the house types and the landscaping plan. This is your opportunity to comment on design quality, parking provision and the relationship between new homes and existing properties.
- Monitor discharge of conditions. Pre-commencement conditions must be formally discharged before work begins. These applications appear separately on the portal, often with the prefix "DOC" or "Discharge of Condition". Check that ecology, drainage and construction-management conditions have been approved before diggers arrive.
- Watch for amendments. Developers sometimes submit minor changes to the reserved matters—revised elevations, adjusted boundaries—after the main approval. These are logged as non-material amendments or Section 73 applications, and they are worth reading if you are concerned about a specific detail.
When outline permission is refused
If the council refuses outline planning permission, the reasons will address the principle of development: harm to the greenbelt, conflict with housing allocations, inadequate access, unacceptable flood risk. The applicant may appeal to the Planning Inspectorate, or they may revise the proposal—reducing the dwelling count, changing the access, offering greater mitigation—and resubmit. A refusal at outline stage does not prevent a full application being made later, though the same objections are likely to recur unless the scheme changes fundamentally.
Refusal reasons are public and are set out in the decision notice. If you objected to the application, the council's case will reflect some of the concerns raised during consultation, provided they were grounded in planning policy. The decision notice will also state the deadline for lodging an appeal, so you will know whether the matter is likely to be reopened.
Outline consent and land value
A site with outline planning permission is worth significantly more than one without, because the principle of development is settled and much of the planning risk has been removed. Landowners sometimes apply for outline consent with the intention of selling to a housebuilder, who will then submit the reserved matters and build out the scheme. This practice is common on larger sites where the original owner lacks the resources or expertise to deliver homes.
The Section 106 agreement travels with the land, so the buyer inherits the affordable-housing quota, the infrastructure contributions and the phasing conditions. The reserved matters application may be made by the new owner, and the design may differ from the indicative layout shown at outline stage, provided it stays within the parameters the outline consent established.
Download PDF: Following a development from outline consent to reserved matters PDF, 28 KB
Further reading
Frequently asked questions
Does outline planning permission mean building can start straight away?
No. Outline permission establishes the principle of development but leaves design details for a later reserved matters application. Construction cannot begin until reserved matters are approved and any pre-commencement conditions are discharged.
How long does outline planning permission last?
Typically three years to submit a reserved matters application, then a further two years from approval of reserved matters to start building. The decision notice will state the exact time limits, which may vary by condition.
Can I object to the design if only outline permission has been granted?
Not at outline stage, because design details are reserved. Your objection should address the principle—traffic, density, impact on the local plan—or wait until the reserved matters application is submitted, when elevations and materials are disclosed.