Planning Rules on Conservatories: Everything Homeowners Need to Know

Last Updated: 5 September 2025

Understanding planning rules on conservatories can feel overwhelming when you’re looking to expand your home. As experts in timber conservatories and orangeries, we’ve helped countless homeowners across Greater Manchester navigate these regulations. This blog will walk you through everything you need to know about conservatory planning permission, ensuring your project stays fully compliant.

When Do You Need Planning Permission for a Conservatory?

A conservatory: a great victorian home feature

Most conservatories fall under ‘permitted development rights’, meaning they don’t require formal planning permission. However, certain conditions must be met:

  • The conservatory must not cover more than 50% of the land around your original house
  • It cannot extend beyond the rear wall by more than 4 metres for detached houses or 3 metres for other houses
  • The maximum height cannot exceed 4 metres for a single-storey extension
  • Side extensions must be single storey and no wider than half the width of the original house

Exceptions to Permitted Development

You’ll need to apply for full planning permission if:

  • Your property is listed
  • You live in a conservation area
  • Your property has already been extended
  • The conservatory doesn’t meet permitted development criteria

How to Apply for Planning Permission

If you do need planning permission, here’s what you’ll need to provide your local authority:

  • Detailed architectural drawings
  • Site location plans
  • Application forms and fees
  • Design and access statement (in some cases)

Tips for a Successful Application

To improve your chances of approval:

  • Consult with neighbours early in the process
  • Consider the visual impact on surrounding properties
  • Ensure designs complement your existing property
  • Work with experienced installers who understand local planning requirements

Common Questions About Conservatory Planning Rules

Grey uPVC conservatory

How Long Does Planning Permission Take?

Typically, planning applications take 8-10 weeks for a decision. We recommend allowing plenty of time before scheduled installation dates.

What About Neighbour Consultation?

Your local authority will usually consult with immediate neighbours as part of the planning process. It’s good practice to discuss your plans with them beforehand.

Professional Support for Your Conservatory Project

At Reddish Joinery, we have extensive experience helping homeowners navigate planning regulations. Our team can:

  • Assess whether your project needs planning permission
  • Design conservatories that meet permitted development criteria
  • Provide guidance throughout the planning process
  • Handle building regulations compliance

Whether you’re planning a traditional Victorian conservatory or a modern orangery, understanding planning rules is essential for a successful project.

Contact our team today for expert advice on your conservatory plans. You can call us on 0161 969 7474 or send us a message online and we’ll get back to you as soon as possible.

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