Planning Applications FAQs

Planning Applications – Frequently Asked Questions

Planning applications can be straightforward or highly complex, depending on the site, proposal and policy context. Below are answers to some of the most common questions we are asked by homeowners, developers and landowners.

If you need advice specific to your site, our Chartered Town Planners can provide clear, professional guidance.

👉 Related service: Planning Applications
👉 Related service: Planning Consultancy Services

Do I need planning permission?

Not all development requires planning permission. Many household extensions and alterations can be carried out under Permitted Development Rights, provided strict criteria are met.

However, factors such as:

• listed building status

• conservation areas

• Article 4 Directions

• changes of use

can remove these rights. In practice, we often recommend confirming the position before works begin.

👉 Related service: Certificates of Lawfulness

Do I need planning permission for an extension?

Some extensions can be built without planning permission under Permitted Development Rights. These rights are subject to limitations on height, depth, materials and siting.

Thousands of unsuspecting households unknowingly become part of enforcement action. As such, we always recommend securing a Certificate of Lawful Development provides formal confirmation and reduces future risk.

Do I need planning permission to change the use of a property?

Many changes of use require planning permission, although some are permitted under the Use Class Order or Permitted Development Rights.

The need for permission depends on:

• the existing use

• the proposed use

• whether the change is material in planning terms

Professional advice is recommended before relying on permitted rights.

👉 Related page: Planning Use Classes FAQs

How long does a planning application take?

Statutory determination periods are:

• 8 weeks for most minor applications

• 13 weeks for major development

Delays can occur where additional information is requested. If a council fails to determine an application in time, a non-determination appeal may be possible.

👉 Related service: Planning Appeals

Why was my planning application refused?

Common reasons include:

• conflict with Local Plan policies

• design or scale concerns

• impact on neighbours

• highway or access issues

• heritage or landscape impact

A refusal does not necessarily mean a proposal is unacceptable in principle. Many refusals can be addressed through an appeal or a revised application.

Can I resubmit a refused planning application?

Yes. In many cases it is possible to:

• submit a revised application addressing refusal reasons, or

• appeal the decision to the Planning Inspectorate

Choosing the right route depends on policy context, refusal reasons and appeal prospects.

👉 Related service: Planning Appeals

How long does planning permission last?

Most full planning permissions are valid for three years, unless otherwise stated in the decision notice.

It is also important to review planning conditions, as some must be discharged before work starts or before occupation.

Can a council withdraw planning permission?

Once granted, planning permission cannot usually be withdrawn unless there has been a legal error or the permission was obtained through false or misleading information.

When should I speak to a planning consultant?

The earlier advice is sought, the more value it can add. Pre-application advice, site appraisals and early policy review often improve outcomes and reduce risk.

👉 Related service: Planning Consultancy Services