How to Apply for Planning Permission

For many homeowners, extending their current property is more appealing than moving. Whether you’re adding space, increasing function or improving long-term value, understanding when planning permission is required helps avoid delays and unnecessary stress.

Applying for Planning Permission

Planning permission isn’t as complicated as people fear—and many projects don’t require it at all.

Planning permission can seem overwhelming, but modern digital systems have made it easier than ever. Many improvements fall under Permitted Development, meaning no application is needed.

Do you need planning permission?

Large projects—such as building self build homes—will require full planning permission. But many extensions and home improvements can be completed without it under the current rules.

Extensions

You can often extend your home without planning permission if you meet key requirements:

• No more than 50% of the total land area is used
• The extension is not forward of the principal elevation
• Maximum height of 4 metres (or 3 metres within 2m of a boundary)
• Materials match the style of the existing house
• No balconies, verandas or raised platforms

Flats and maisonettes have separate rules, but most homeowners can still add conservatories, garden rooms or brick extensions without needing permission.

Other additions

Many common upgrades don’t require planning permission at all, including:

• Paving the front garden (using porous materials)
• Adding garages, sheds and outbuildings
• Replacing windows and doors
• Installing skylights
• Adding solar panels or wind turbines
• Altering fences, walls and gates
• Loft conversions
• Garage conversions

I need planning permission—what next?

If your project exceeds Permitted Development rules, you’ll need planning permission. Two types exist:

• Outline permission – approval in principle
• Full permission – detailed approval for the final design

Most homeowners apply directly for full permission to avoid duplication. Applications generally require:

• Application forms
• Ownership certificate
• Site plan & block plan
• Existing and proposed elevations
• Design and Access Statement
• Planning fee

Costs and Statements

A Design and Access Statement supports your proposal and explains its suitability. Planning fees vary, but typical costs include:

• £380 – new single dwelling (England)
• £170 – home improvement applications
• Additional small fees for discharging conditions

How planning permission is decided

Councils assess each application against “material considerations,” including:

• Loss of privacy or light
• Parking and highway safety
• Noise and traffic levels
• Design, appearance and materials
• Government policies
• Impact on conservation or listed buildings
• Neighbour and parish council comments

Conservation areas

Planning rules are stricter in conservation areas. Applications undergo greater scrutiny to ensure changes do not harm architectural or historical value.

Planning Permission – Key Facts

Conclusion

Permitted Development covers more than many people expect, meaning planning permission isn’t always needed. When it is required, online applications and professional guidance help streamline the process and improve the likelihood of approval.

Last updated: 26 November 2025