Is Planning Permission Needed for an Orangery?

Many homeowners choose to extend their living space with an orangery rather than move house. Orangeries offer light-filled, versatile rooms that enhance both comfort and value, but before starting the project, it’s important to understand how planning permission applies. While some orangeries qualify under Permitted Development, others require approval, depending on size, design and location.

Is Planning Permission Needed for an Orangery?

When it comes to extending your property, there are many different options. From single-storey brick-built extensions to conservatories and even an oak orangery, there is no shortage of options. If you plan to add an orangery, the first question to answer is whether planning permission is required.

Many orangeries can be built without planning permission, provided they meet key Permitted Development rules.

Permitted Development

Under the current planning system, you must apply for permission if you plan to build on or modify land or buildings. However, conservatories and orangeries are treated differently and often fall under “Permitted Development Rights.” This means a single–storey conservatory or orangery can be built without planning permission if it meets the following rules:

• The property has not already been significantly extended
• Materials used are similar in appearance to the main house
• The structure does not cover more than 50% of the garden
• The highest point is not taller than the house eaves
• The overall height is no more than 4m (or 3m if within 2m of a boundary)
• Side extensions are no wider than half the width of the house
• No verandas, balconies or raised platforms are included

If uncertain, always check with your local authority or the Planning Portal.

Quick Orangery Rules Reference

Problems With the Project

Extra restrictions apply to conservation areas, World Heritage Sites and listed buildings. In these cases, full planning permission may be required and certain designs may be rejected. Installing an orangery without permission when it is required can lead to fines up to £5,000 and orders to remove the structure.

Building Regulations

Even when planning permission is not required, building regulations always apply. These cover structural safety, insulation, glazing standards and more. Orangeries are exempt from some regulations, but must still meet rules on glazing, doors, and overall structural integrity.