An outline planning application establishes whether a development is acceptable in principle, without committing to detailed design, while a full planning application includes complete drawings and technical detail for immediate approval to build. Outline applications suit large or uncertain projects where you want early confirmation before investing in detailed design, while full applications suit projects ready to proceed straight to construction. Studio Charrette’s planning permission services can assess which route is right for your project before you commit time or budget to either.
Outline vs Full Planning Application at a Glance
| Outline Application | Full Application | |
|---|---|---|
| Level of detail required | Minimal, principle-only | Complete drawings and specifications |
| Confirms | Whether development is acceptable in principle | Full approval to build as designed |
| Design cost before submission | Low | Higher, detailed drawings required |
| Follow-up application needed? | Yes, reserved matters application | No, ready to build once approved |
| Best suited to | Large sites, uncertain projects, land promotion | Extensions, conversions, ready-to-build schemes |
| Typical determination period | 13 weeks (major applications) | 8–13 weeks depending on scale |
Choosing the wrong route can waste months of design time or leave you without the certainty you need before investing further. Our planning services team can confirm which application type suits your project before you proceed.
What Is an Outline Planning Application?
An outline planning application asks the local planning authority to confirm whether a development is acceptable in principle, before detailed design work is carried out. It’s typically used for larger sites, such as new housing developments, where a landowner or developer wants confirmation that the site can be developed before investing significant time and money into detailed architectural drawings.
An outline application can be submitted with all matters reserved, or with some matters, such as access, agreed upfront. Whatever is not agreed at outline stage must be addressed later through a separate “reserved matters” application, which deals with the detailed layout, scale, appearance, and landscaping of the scheme.
Studio Charrette’s planning experts regularly advise on whether an outline application is the right first step for larger or more uncertain projects.
What Is a Full Planning Application?
A full planning application includes complete, detailed drawings and specifications from the outset, covering layout, scale, appearance, materials, and landscaping. Once approved, a full application gives you everything needed to proceed straight to construction, without any further reserved matters stage.
Most domestic projects, including extensions, loft conversions, and change of use applications, are submitted as full applications, since the scale of the project doesn’t usually justify the outline route. Our planning services team prepares full applications with all the detail your local authority needs to reach a decision without unnecessary delay.
When Should You Use an Outline Application?
An outline application makes sense when:
- You’re developing a large site, such as a new housing scheme, and want confirmation of principle before committing to full design costs.
- The project involves multiple phases or uncertainty around exact layout, and you want flexibility to finalise details later.
- You’re promoting land for future development or sale, and a confirmed principle of development adds significant value.
- You want to reduce upfront design risk on a complex or high-value scheme before detailed drawings are commissioned.
Get in touch with our planning services team if you’re weighing up whether an outline application suits your site.
When Should You Use a Full Application?
A full application is generally the right route when:
- Your project is a standard domestic extension, conversion, or change of use, where the scale doesn’t justify a two-stage process.
- You want to proceed straight to construction once approval is granted, without a further reserved matters stage.
- The site and design are already well understood, and detailed drawings can be prepared without significant risk of abortive cost.
- You need certainty on the finished appearance and detail of the scheme as part of your funding or mortgage requirements.
Speak to our planning specialists to confirm that a full application is the most efficient route for your specific project.
The Outline Application Process, Step by Step
- Initial assessment. We review the site, relevant planning policy, and your objectives to confirm whether an outline application is the appropriate first step.
- Decide which matters to reserve. You choose whether to address access, layout, scale, appearance, and landscaping now, or reserve them for a later application.
- Prepare the application. Site plans, a planning statement, and any matters you’ve chosen to address are prepared and submitted to the council.
- Determination. The council assesses whether the development is acceptable in principle, typically within 13 weeks for major applications.
- Reserved matters application. Once outline consent is granted, a further application deals with any remaining detail before construction can begin.
Studio Charrette’s planning services manage both stages of this process, so your project has continuity from initial principle through to detailed approval.
The Full Application Process, Step by Step
- Initial consultation and design. We develop a complete design, including layout, scale, appearance, and materials, informed by relevant planning policy from the outset.
- Drawings and supporting documents. Detailed drawings, a design and access statement where required, and any specialist reports are prepared to support the application.
- Pre-application advice. Where available, engaging with the council before submission can flag concerns early and improve the chances of a smooth approval.
- Submission and consultation. The application is submitted, neighbours are consulted, and the council assesses the scheme against local and national planning policy.
- Decision. If approved, you can proceed straight to construction, subject to any conditions attached to the decision notice.
Our team manages the full application process from design through to decision, so you have one point of contact throughout.
Can You Convert an Outline Application Into a Full Application?
Not directly, but the two are closely linked. Once outline permission is granted, you submit a reserved matters application dealing with whatever detail wasn’t agreed at outline stage. This effectively achieves the same outcome as a full application, but in two separate stages rather than one.
Alternatively, some applicants choose to withdraw an outline application partway through the process and submit a full application instead, if circumstances change or if full detail becomes available sooner than expected. Our planning services team can advise on which route remains most efficient if your project evolves.
Common Mistakes When Choosing Between Outline and Full Applications
- Submitting an outline application for a small domestic project, adding unnecessary time and cost through a two-stage process.
- Committing to detailed drawings for a full application on a large or uncertain site, before principle of development is confirmed.
- Reserving too many matters at outline stage, creating uncertainty that makes the site harder to fund or sell before reserved matters approval.
- Failing to align the outline application’s parameters with what will realistically be achievable at reserved matters stage.
Avoiding these mistakes starts with getting the right route confirmed before any design work begins. Book a consultation with our planning services team to get this right from the outset.
Get the Right Planning Route for Your Project
Choosing between an outline and full planning application isn’t just a procedural decision; it shapes your project’s timeline, budget, and risk from day one. Getting it wrong can mean wasted design costs, unnecessary delay, or a lack of certainty exactly when you need it most.
That’s why landowners, developers, and homeowners trust Studio Charrette’s planning permission services to assess the right route for their project and manage the entire process, whether that’s a straightforward full application or a phased outline and reserved matters strategy.
Not sure whether your project needs an outline or full planning permission? Book a consultation with our planning services team today and get clarity before you commit to a design.
Frequently Asked Questions
What is the main difference between an outline and a full planning application? An outline application confirms whether a development is acceptable in principle, without full design detail, while a full application includes complete drawings and specifications, giving immediate approval to build once granted. Our planning services team can confirm which is right for your project.
Is an outline planning application faster than a full application? Not necessarily. While an outline application requires less detail upfront, it still needs a follow-up reserved matters application before construction can begin, which means the overall process can take longer than a single full application for smaller projects.
Can I build straight away once I have outline planning permission? No. Outline permission only confirms the principle of development. You’ll need to submit a reserved matters application covering any details not agreed at outline stage, and that application must also be approved before construction can begin.
Do I need an outline application for a house extension? Almost never. Outline applications are generally used for larger or more complex sites, such as new housing developments. Standard domestic extensions and conversions are nearly always submitted as full applications.
What are “reserved matters” in an outline planning application? Reserved matters refer to any details not agreed at outline stage, typically layout, scale, appearance, access, and landscaping. These must be approved through a separate application before construction can begin.
How long does an outline planning application take to be approved? Major outline applications typically have a statutory determination period of thirteen weeks, though this can extend further if the application is referred to committee or attracts significant objections.
Which route is better for a large development site: outline or full application? This depends on your objectives. An outline application reduces upfront design cost and confirms the principle before further investment, making it well suited to land promotion or complex sites. A full application suits developers who are ready to proceed straight to construction and want certainty on the finished scheme from the outset. Speak to our planning services team to determine the best strategy for your site.
