What are Planning Applications?
If you’re making changes to a property or starting a new development, you may need to submit a planning application. But what exactly is a planning application, and why is it important?
This guide explains what planning applications are, why you might need one, and how the process works.
What Is a Planning Application?
A planning application is a formal request submitted to your local planning authority (usually the local council) seeking permission to carry out certain types of development or changes to land or buildings.
This could include anything from:
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Building a new home or extension
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Changing the use of a property (e.g. turning a shop into a flat)
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Installing a large outbuilding or driveway
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Subdividing a property
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Carrying out major landscaping or engineering works
Planning applications are designed to ensure that new developments are appropriate, sustainable, and in line with local planning policies.
When Do You Need One?
You need to submit a planning application if your proposed works are not classed as permitted development. While some home improvements (like certain rear extensions or loft conversions) don’t require full permission, many projects do — especially if the property is in a conservation area or is a listed building.
It’s always a good idea to seek professional planning advice before starting any work, to avoid enforcement action later on.
Types of Planning Applications
There are different types of planning applications, depending on the scale and nature of your project:
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Householder Planning Application – for domestic extensions, alterations, and garden buildings
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Full Planning Application – for new builds, significant alterations, or commercial projects
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Outline Planning Application – used to gain approval in principle before submitting full details later
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Reserved Matters Application – follows an outline approval and includes detailed plans
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Change of Use Application – for changing how a property or land is used
What’s Included in a Planning Application?
A typical planning application will include:
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Site location plan and existing/proposed drawings
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A description of the proposed development
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Completed application forms
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Planning statement or supporting documents
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Application fee (varies depending on the project)
Depending on your proposal, you may also need specialist reports such as flood risk assessments, ecological surveys, or heritage statements.
The Planning Process
Once your application is submitted, the local authority will:
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Validate the application
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Consult neighbours, statutory bodies, and relevant officers
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Assess the proposal against planning policies
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Make a decision – usually within 8 weeks for minor applications or 13 weeks for major ones
If the application is approved, you’ll receive planning permission, usually with conditions attached. If it’s refused, you can either amend and resubmit or appeal the decision.
Final Thoughts
Planning applications can seem daunting, especially if you’ve never submitted one before. At Angharad Williams Planning, we guide clients through the entire process — from initial advice to preparing and submitting the application itself.
If you’re unsure whether your project needs permission, or you want to improve your chances of approval, don’t hesitate to get in touch. We’re here to help.
