Castle Conservatories

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Modern Extensions Sutton

Extend your home in Sutton with our range of bespoke modern extensions. We tailor our projects to your home, working to your budget to create a beautiful space. Open your house with our modern extension range of conservatories and orangeries.

Our designs are incredibly versatile. We can create an extension for a new lounge, dining room, study, or just a space to escape to. With 25 years’ experience behind us, we are experts in home improvements. We strive to provide our Sutton customers with high-quality extensions as a cost-effective solution to expanding your space.

Our extensions use the best suppliers in the business, ensuring quality and style. The security and durability of our products excel in our projects, making you feel safe at home. Check out our range of stunning conservatories and orangeries today!

Benefits of Modern Extensions

Energy Efficient

Save significantly on your energy bills with our modern extensions. Our high-performance materials have excellent heat retention qualities. The perimeter pelmet preserves heat, while the insulated columns warm your entire extension. The frames are incredibly thick, so stop any heat from leaving. More importantly, with reduced energy bills comes the benefit of a reduced carbon footprint!

Additionally, our double-glazed windows and doors trap pockets of air, keeping the cold out. For a comfortable temperature all year round, our modern extensions are perfect! Use your heating bills far less with our modern extensions, which will save you money in the long run.


Make a worthwhile investment with our modern extensions. Expand your space without having to move house with a stunning conservatory or orangery. Our suppliers use the best materials in the business for the quality that lasts for years. With these high-quality products, you won’t see decay and deterioration in the look and performance.

What’s more, our features require very little upkeep to maintain the original look of them. Simply clean the moveable elements such as handles and hinges and wipe down the glass every so often. You can relax knowing you don’t have to provide constant care to your modern extensions.


It’s fundamental to feel safe in your Sutton home. Therefore, we go the extra mile when it comes to safety. Our locks are all tested to the highest standard of security. Our multi-locking mechanisms are incredibly secure to keep away unwanted intruders. Our double-glazing windows can withstand great force, particularly during strong weather.

Wind and rain are kept at bay, and the dual profile will keep your modern extension dry. The structural integrity is exceptionally robust, so you can rely on a feature that will last in any weather, during any season. Cold draughts and water ingress will be problems of the past with our modern double glazing that we use within our extensions

Modern Conservatories

Our designer conservatories offer a contemporary feel to any home in Sutton. For a spacious room that has a variety of uses, our modern conservatories are perfect. When looking for extension installation, we all want a room that has style and elegance without compromising on its function. Add value with modern extensions, as the visual appeal is teamed with long-lasting performance.

Sleek in its structure and utilising heaps of daylight, modern conservatories make a great relaxation spot. For versatility, performance and sophistication, look no further than a modern conservatory. We also offer classic and performance conservatories to suit the aesthetic of your Sutton property.

Modern Orangeries

Orangeries offer a different take in the modern extension industry. Conservatories utilise as much light as possible with the double-glazing windows lining the room. However, orangeries provide substantially more protection as they are fitted with full-height brick walls. This improves thermal efficiency and security too.

Here at Castle, we can fit the orangery with the style of your property effortlessly. Our modern extensions will increase the value of your Sutton home, as an attractive feature. Our contemporary orangeries are fitted with a lantern style roof to brighten your space with our double-glazing windows. For elegance and minimalism, modern orangeries are ideal.

Why Choose Castle Conservatories?

We can accommodate your project, where you opt for a conservatory or orangery modern extension. With over 25 years of industry experience, we have worked on an abundance of extension projects, deliver quality every time.

You can rely on us for a stunning extension. We offer a 10-year insurance backed guarantee to give you peace of mind with your investment. We can provide advice on your project, but ultimately, the design choices are yours to make. For an improvement to your Sutton home, choose Castle Conservatories.


Modern Extension Prices Sutton

We make every modern extension to measure and tailor everything to your tastes. At Castle Conservatories, we work meticulously with you during our entire process, leaving you satisfied with your instalment. For our Sutton customers, we provide extensions with exceptional functionality and style.

Get an instant quote today to see what your dream modern extension will cost. Use our free tool by putting in your specifications and style choices, and we’ll give you a price.

Ask us anything via our online contact page. We’re happy to answer any queries you may have. If you want to speak to one of us directly, give our office a call on 020 8669 1500, and we’ll do our best to help!

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