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Understanding Planning Requirements
A common question among homeowners looking to add this beautiful structure is, "Is planning permission required for an orangery?" This is crucial to determine before proceeding with your dream project. Orangeries, with their extensive glazing and various styles, can completely transform your home and connect your interior spaces to your garden.
9Bridging the gap between conservatories and sunrooms, orangeries fall under the category of garden rooms, and the rules regarding planning permission are similar for these structures. Here, we explain when you might need planning permission for your new addition and when it may fall under permitted development.
Do You Need Planning Permission for an Orangery?
In many cases, planning permission is not required to build an orangery. However, this depends on several factors, including the size of the structure, the area in which you live, and the style of your house. The rules for planning permission for orangeries generally align with those for conservatories and smaller extensions. This means that if your new orangery meets the criteria for permitted development, you will not need to apply for planning permission. Be aware that you must still adhere to building regulations. For freestanding orangeries not attached to the house, the same rules apply as for garden room planning permission.

What Is an Orangery?
Before diving into the planning requirements, it's helpful to understand what constitutes an orangery. Many people often compare orangeries and conservatories, but there are key differences between the two. A conservatory requires that at least two-thirds of its roof be made from glass or translucent plastic, with a minimum of 50% of the walls also being translucent.
In contrast, orangeries typically feature a flat or mansard roof with a glazed lantern to allow natural light in. They usually have large windows rather than fully glazed walls. While orangeries are suitable for both traditional and contemporary homes, they often complement period properties, as they were originally designed for growing citrus fruits.
When Might You Need Planning Permission for an Orangery?
There are specific circumstances under which you may need to apply for planning permission before building an orangery, including:
- If your detached home will extend more than 4m (8m under prior approval) to the rear.
- If your semi-detached or terraced home will extend more than 3m (6m under prior approval) to the rear.
- When the orangery is built at the side of your home and exceeds 4m in height or is wider than half the width of the house.
- If you wish to add an orangery to the front of your home.
- If the orangery features materials that contrast significantly with those of your house or neighbouring properties.
- If your home is located in a conservation area or any other designated area.
- If you want to add an orangery to a listed building.
- If the orangery will cover more than half of your garden.
- If you have already used all your permitted development rights.
Can I Build an Orangery Under Prior Approval?
Permitted development allows homeowners to undertake certain types of development without needing to submit a planning application. To be eligible for these rights, your project must comply with specific limitations and conditions. In some cases, there may be a requirement to apply for your Local Planning Authority's 'Prior Approval' to ascertain whether it’s needed.
Several years ago, the Larger Home Extension Scheme was introduced, permitting homeowners to build larger single-storey rear extensions than those typically allowed under permitted development. To qualify, your proposal must extend no more than 8 metres for detached properties or 6 metres for all other properties. It’s important to check that any permitted development rights have not been exhausted by previous owners.
While the Larger Home Extension Scheme now falls under permitted development, you will need to obtain Prior Approval before constructing your orangery. This ensures your project adheres to fixed legal requirements rather than the more unique criteria of a planning application. The process can be simpler than a full planning application, and your orangery may be allowed to be larger under this route.

Should I Get a Lawful Development Certificate Before Building an Orangery?
While obtaining a lawful development certificate (LDC) is not a requirement when building an orangery, it is highly advisable. An LDC serves as proof that your building work is legal and can be beneficial for future buyers or if planning rules change later. You can apply for an LDC online, which includes plans and elevations, with a fee of half the normal planning fee—£206 in England, £230 in Wales, or £202 in Scotland.
Do I Need a Party Wall Agreement for an Orangery?
In some cases, when constructing an orangery, you may need to arrange a Party Wall Agreement. If the orangery is connected to or built against a wall shared with a neighbouring property, you will need to enter into this agreement under the Party Wall etc. Act 1996. This is common in urban areas where structures are added to the rear of properties with adjoining gardens.
Need More Advice?
Building an orangery is an exciting project that can enhance your home and lifestyle. If you have questions about planning permission or need assistance navigating the process, contact our team today at 0800 014 8643. We're here to help ensure your project is a success!