Adding an orangery to your home is an investment in both lifestyle and property value. Whether you envision a sun-drenched home office or a sophisticated extra living space for entertaining, understanding the local planning landscape in Crawley, West Sussex is the first step toward a successful build.
At BSF Windows, we specialise in bespoke orangeries that combine modern materials with timeless design. However, even the most beautiful modern orangery must comply with local regulations. As of 2026, the rules surrounding home extensions remain focused on preserving the character of our local neighbourhoods while allowing homeowners the freedom to grow.
What exactly is an orangery?
Homeowners often ask about the architectural appeal of an orangery compared to other structures. Unlike a conservatory, which is primarily made of glass, an orangery is a more substantial building. It typically features solid brick pillars and a perimeter flat roof with a central roof lantern.
This design allows the structure to act as a natural extension of the main house. By incorporating more masonry, an orangery provides leading energy efficiency and a more permanent feel, making it a popular choice for those in Crawley and Haywards Heath who want the best-performing space they can get.
Do orangeries fall under ‘permitted development’ in Crawley?
The good news for many homeowners in West Sussex is that a new orangery often falls under “permitted development” (PD) rights. This means you may not need formal planning permission, provided your project meets specific criteria set by the Crawley Borough Council.
As of 2026, the standard limits for a single-storey rear extension (which includes orangeries) are:
- Detached Homes: You can extend up to 4 metres from the original rear wall.
- Semi-Detached/Terraced Homes: You can extend up to 3 metres from the original rear wall.
- Height Limits: The structure must not be higher than the highest part of the existing roof, and the eaves height must not exceed 3 metres if it is within 2 metres of a boundary.
Under the “Prior Approval” scheme, these limits can often be doubled (up to 8m for detached and 6m for others), but this requires a formal notification to the council and a neighbour consultation process.
Are there special rules for conservation areas or period properties?
If your home is located in a conservation area, such as those found in parts of Worth or Ifield, your permitted development rights are more restricted. West Sussex has several designated areas where the council seeks to preserve historical architectural appeal.
In these zones, you will likely need to submit a full planning application. The council will look for modern materials that are sympathetic to the original building. Similarly, if you own a listed period property, you will require “Listed Building Consent.” Our expert team at BSF Windows has years of experience navigating these requirements, ensuring that your roof lantern and brickwork complement the heritage of your home rather than detract from it.
How does an orangery differ from a conservatory in planning terms?
In the eyes of the planning office, both are technically home extensions. However, the main difference often lies in building regulations. Because an orangery is usually an open-plan extension to the kitchen or lounge, it must meet stricter thermal standards.
While a conservatory with a glass roof and separate doors can sometimes be exempt from certain building control checks, a modern orangery is treated as a habitable room. This is actually a benefit; it ensures your additional living space is safe, well-insulated, and adds significant value to your property.
What customisation options can help with compliance?
Choosing the right design can actually make the planning process smoother. At BSF Windows, our Expert team offers a variety of customisation options to suit both your taste and local guidelines:
- Traditional vs. Contemporary: Whether you want a focal point with a classic timber-style finish or a sleek modern orangery with thin aluminium frames we can create the ideal aesthetic.
- Roof Options: We offer high-performance lantern roofs that flood the room with natural light without causing the overheating issues associated with older glass roof designs.
- Access: Incorporating French doors can provide a classic transition to your garden, while large sliding doors can create a more modern look.
- Privacy: For homes in more densely populated parts of Crawley, we can design side walls with higher brickwork or frosted glazing to ensure you meet privacy requirements and avoid overlooking your neighbours.
Visit BSF Windows for peace of mind
Navigating planning permission doesn’t have to be a hurdle. At BSF Windows, we pride ourselves on being your premier destination for stunning garden rooms and orangeries in Surrey and Sussex. We take care of the precision engineering and design, so you can focus on how you’ll enjoy your beautiful new space.
Ready to transform your home with a bespoke orangery? Contact us today or visit our Horley showroom to speak with a specialist.
- Tel: 01293 408 713
- Email: bsfwindows@gmail.com
- Online: Contact BSF Windows
Showroom Address: 31-33 Station Road, Horley, Surrey, RH6 9HW Opening Hours: Mon – Fri: 8am – 5pm (Sat – Sun: Closed). Book an appointment online here.