House Extensions In Sunningdale
Sunningdale sits within the Green Belt, and that shapes almost every extension decision in the village. Planning policy limits how much a house can grow beyond its original size, so the best Sunningdale extensions tend to be the carefully proportioned ones that make each new square metre count. A well-planned kitchen-diner or garden room often achieves more than a larger, harder-to-approve design.
That is where early advice pays off. Lemon Tree Construction reviews your house, its history and any previous additions before design starts, then tells you plainly whether the idea is likely to work under permitted development or will need an application to the Royal Borough of Windsor and Maidenhead. A single-storey rear extension on a detached home can usually go 4 metres beyond the original rear wall without full planning permission; two-storey, side and wraparound schemes are more likely to need consent.
Is it possible to keep living in the house during the build? In most cases, yes. The heaviest work happens outside the existing walls, and we keep the kitchen, bathroom and bedrooms in use for as long as we can, breaking through into the new space as late in the programme as possible and agreeing the order of works with you in advance.
On cost, allow roughly £1,500 to £2,500 per square metre for a single-storey build, then add a 10 to 15% contingency and VAT at 20%. Your Sunningdale quote is fully itemised, and our FMB-registered team takes the project from drawings to building control sign-off, using matching materials so the new space sits comfortably with the old.
Single-Storey Extensions
Create additional living space on one floor that seamlessly blends with your existing home, tailored to your design preferences.
Double-Storey Extensions
Create spacious, multi-level additions that provide extra living space, blending with your home’s design, increasing its value.
Wraparound Extensions
Combine side and rear extensions to create a spacious, versatile living area that maximises your home’s footprint.
Side and Rear Extentions
Extend both the side and the back of the property for a larger, more open floor plan or for adding extra rooms.
More Details
Single-Storey Extensions In Sunningdale

At Lemon Tree Construction, we specialise in designing and building single-storey extensions that provide you with additional living space tailored to your needs. Whether you're looking to expand your kitchen, create an open-plan living area, or add a new room to suit your growing family, our single-storey extensions are a cost-effective and efficient way to enhance your home.
We work closely with you to create a design that complements your existing property, ensuring the extension blends seamlessly with the original architecture. Our experienced team manages every aspect of the project, from obtaining planning permissions and approvals to construction and final finishes, ensuring a smooth and hassle-free process.
Single-storey extensions are an excellent option for homeowners looking to increase floor space without the complexity of multi-storey additions. At Lemon Tree Construction, we pride ourselves on delivering high-quality craftsmanship and creating functional, beautiful spaces that enhance your lifestyle and add long-term value to your property.
Double-Storey Extensions In Sunningdale

At Lemon Tree Construction, we specialise in double-storey extensions that provide significant additional living space by expanding both the ground and upper floors of your home. Whether you're looking to create a larger kitchen, add extra bedrooms, or increase the overall functionality of your home, a double-storey extension offers a versatile solution that maximises your property’s potential.
Our team works closely with you to design a personalised extension that seamlessly integrates with your existing architecture while meeting your specific needs and budget. From planning and obtaining necessary permits to construction and final finishing, we manage every aspect of the project to ensure a smooth and stress-free experience.
Double-storey extensions not only enhance the usability of your home but also increase its value, making it a smart investment for the future. At Lemon Tree Construction, we are committed to delivering high-quality craftsmanship and creating beautiful, functional spaces that improve your home's layout and your everyday living experience.
Wraparound Extensions In Sunningdale

At Lemon Tree Construction, we specialise in wraparound extensions that combine both side and rear extensions to create a significant increase in living space. This type of extension wraps around two sides of your property, providing a versatile and spacious addition that can transform the layout and functionality of your home.
A wraparound extension is ideal for homeowners looking to create an open-plan living area, expand their kitchen, add extra rooms, or simply maximise the potential of their property. Our team will work closely with you to design and build an extension that blends seamlessly with your existing home, ensuring it complements both the architecture and style of your property.
From planning and design to construction and finishing, we handle every detail, including obtaining necessary planning permissions and ensuring compliance with building regulations. With a focus on quality craftsmanship and tailored solutions, our wraparound extensions provide the extra space you need while adding long-term value to your home.
Side and Rear Extensions In Sunningdale

At Lemon Tree Construction, we specialise in side and rear extensions that provide the perfect solution for homeowners looking to maximise space without moving. Our side and rear extension services are designed to expand your home by extending both the side and rear of your property, creating a seamless transition between new and existing spaces.
Whether you want to extend your kitchen, create a larger living area, or add an extra bedroom, we work with you to design a customised solution that suits your needs, lifestyle, and budget. Our team handles every aspect of the project, from planning permissions and architectural design to construction and finishing, ensuring a smooth and stress-free experience.
Side and rear extensions not only offer increased living space but also allow for creative, open-plan layouts that enhance the flow of your home. With a focus on quality craftsmanship and attention to detail, Lemon Tree Construction ensures your extension blends beautifully with your existing home while adding value and functionality.
