Navigating Planning Permissions for a House Extension in Scotland

One of the first questions many homeowners ask when planning a house extension is whether planning permission will be needed.

Understanding the Scottish planning system early can help avoid unnecessary delays and frustration. Here's a practical guide to navigating permissions for home extensions across Scotland.

1. Permitted Development Rights (PDR)

Some smaller extensions fall under Permitted Development Rights (PDR), meaning they don't require formal planning permission. To qualify:

• The extension must not project more than 3 metres (terraced house) or 4 metres (detached house) from the rear wall.

• It must not exceed the height of the existing house.

• No part of the extension should be closer to a public road than the original house.

• Materials should match the existing house as far as possible.

PDRs are more limited if the property is in a Conservation Area or if previous alterations have already used up allowances.

2. When Planning Permission Is Required

You will likely need full planning permission if:

• Extending towards a public road (front, side, or corner).

• Building an extension that exceeds permitted development size limits.

• The house is a listed building or in a conservation area.

• The extension significantly alters the appearance of the house.

Each local authority, such as Moray Council, provides supplementary planning guidance which may also apply.

3. Submitting a Planning Application

If planning permission is required, the application typically involves:

• Completing application forms

• Submitting detailed drawings showing existing and proposed layouts

• Providing supporting documents (such as location plans and drainage information)

• Paying an application fee based on project type

Most councils encourage online submission through the ePlanning Scotland portal.

4. Public Consultation and Neighbour Notification

When an application is submitted, neighbours within 20 metres are usually notified. They have a right to submit comments within a set timeframe (typically 21 days).Planning officers assess the application against local and national policies, not personal opinions, but legitimate concerns (such as loss of light or privacy) may be taken into account.

5. Timescales and Approvals

• A standard householder application typically takes 8 weeks for a decision, but more complex cases can take longer.

• If permission is refused, applicants have the right to appeal or amend and resubmit plans.

• Always ensure that planning approval (if required) is obtained before applying for a Building Warrant or starting any construction work.

Understanding Scotland’s planning system and preparing well-documented applications can greatly improve the chances of securing permission for an extension. Early research and professional guidance are key to a smooth approval process.