Do You Need Planning Permission for an Orangery?
- Glass House Architecture
- Jul 10
- 4 min read
One of the most common questions we’re asked when designing a new orangery is: “Do I need planning permission?” The short answer is, sometimes. Many orangeries can be built under permitted development, but that depends on the size, location, and status of your property.
At Glass House Architecture, we handle planning for all of our bespoke orangeries. Whether you live in a period home, a listed building, or a modern house in a conservation area, we help you navigate the process from start to finish.
What Counts as an Orangery?
Before diving into permissions, it’s helpful to understand what makes an orangery different. A traditional orangery includes a brick or timber base, full-height glazing, and a solid roof with a glazed lantern. Compared to a glass box extension, it feels more structured. And compared to a brick extension, it offers more light and openness.
It’s not a conservatory or a winter garden, but something in between, both in terms of structure and planning rules.
When Planning Permission Isn’t Required
In many cases, an orangery can be built under permitted development rights, which allow certain home improvements without full planning permission.
Here are the key rules:
The orangery must not exceed 4 metres in height
It must not extend more than 3 metres (semi) or 4 metres (detached) from the rear wall
It must not cover more than half the garden
It must sit behind the principal elevation
It must not be on designated land (like a conservation area or National Park)
Materials must be “similar in appearance” to the existing house
If your project meets all of these, you likely won’t need permission, but it’s always worth checking with your local planning office or letting us handle it on your behalf.
When You Will Need Planning Permission
There are several cases where planning is almost always required:
You live in a listed building
Your home is in a conservation area
The orangery exceeds height or depth limits
You want to build close to a boundary
The design significantly alters the appearance of the home
In these cases, we prepare a full set of drawings, statements, and materials for submission. We also consult directly with planning officers when needed, especially for heritage homes.
What About Building Regulations?
Even if planning permission isn’t required, your orangery must still comply with building regulations. These rules cover structural safety, insulation, glazing, fire access, and more.
For example, the glass used in a traditional orangery must meet thermal performance standards. We use double or triple glazing with low U-values, and our roof lanterns are often fitted with solar control glass for added comfort.
Our designs meet or exceed all current regulations, and we can supply all certificates and documentation to support your build.
How the Planning Process Works
If your orangery does need permission, we manage the entire process:
Initial assessment: We review your property’s location, history, and current planning status
Drawings and design: We produce detailed architectural plans tailored to your home
Submission: We submit your planning application and act as your agent
Decision: Most councils respond within 8 weeks
Amendments if needed: We revise and resubmit if required
If the project qualifies for permitted development, we can apply for a Lawful Development Certificate instead - a formal confirmation that no permission is needed.
Special Cases: Listed Homes and Conservation Areas
Listed buildings require listed building consent for any change to the structure or appearance. This includes adding an orangery, even if it’s at the rear. We work closely with conservation officers and use traditional materials like oak, painted hardwood, and stone to ensure a sympathetic design.
In conservation areas, the key is visual impact. A well-designed orangery that reflects local character and scale is more likely to gain approval.
Our experience with architectural features of orangeries, like brick plinths, pilasters, and Georgian-style glazing, helps us design structures that planners are happy to support.
Cost and Timescale Implications
Involving the local authority can extend the build timeline. You should allow 2–3 months for planning and approvals before construction begins. We always discuss this early on so you can plan accordingly.
While the cost of a traditional orangery rises slightly with extra planning steps, the long-term value added to your home usually outweighs the expense.
What If You Skip Planning?
We don’t recommend it. Building without the correct permissions can result in enforcement action, fines, or even a requirement to demolish the structure. If you're unsure, we’ll confirm whether your plans fall within the rules and help you avoid common mistakes when building an orangery.
Pros and Cons of Each Route
Permitted Development:
✔ Faster approval
✔ Less paperwork
✘ Size and location limits
✘ Not allowed in protected areas
Full Planning Permission:
✔ More freedom in design
✔ Suitable for all properties
✘ Longer process
We’ll help you choose the best path for your project and make the process as smooth as possible.
What We Include in Every Build
When you work with us, we don’t just build. We manage every step, from concept to construction. That includes guidance on orangery roof types, lighting layouts, heating systems, and the full range of accessories.
No matter the planning route, your orangery will be designed to feel like a natural part of your home. We take inspiration from orangery ideas seen in country homes, townhouses, and listed estates across the UK.
Final Thoughts
Planning permission for orangeries isn’t always needed - but when it is, it’s nothing to worry about. With the right advice, the right materials, and the right design, getting approval is simply part of the process.
At Glass House Architecture, we treat each property with care. Whether you're planning a garden room or a full-width glazed extension, we’ll help you build something beautiful and build it right.
