Prime London House Extensions & Refurbishments
At FrontierstroyUK Design & Build, we provide a leading-edge service for luxury property extensions in London, trusted by clients in Kensington, Chelsea, Fulham, Wandsworth and Hammersmith. Our aim is to capture your vision from the very outset and translate it seamlessly into a bespoke extension that enhances both lifestyle and property value.
With extensive experience in navigating planning permission and London building control, we ensure every detail is managed with precision and discretion. From concept design through to construction and interiors, our in-house team delivers extensions that are not only functional, but truly transformative.
At FrontierstroyUK Design & Build, we specialise in creating luxury house extensions across London, transforming properties with intelligent design, refined craftsmanship and meticulous planning. Whether enlarging your ground floor, extending to the rear or side, or reimagining space with a bespoke kitchen extension, our team ensures every detail enhances both lifestyle and value.
By introducing clever skylight designs, underfloor heating and seamless transitions between living, dining and kitchen areas, we deliver spaces that are light-filled, functional and timeless. Our expertise extends beyond the interior — with in-house capability in both hard and soft landscaping, we create a holistic vision where architecture and gardens are designed in harmony.
For clients seeking to remain in their current homes while maximising space, our services include kitchen extensions, loft conversions and airspace projects, each tailored to the property and its context. Extensions are a proven way to increase property value, though final valuation is always influenced by postcode and quality of construction — areas where FrontierstroyUK’s reputation provides a significant advantage.
With a design & build process refined to perfection, we offer both traditional construction methods and modular solutions to suit each project. From initial architectural design through to interiors and completion, our talented in-house team ensures you are in safe hands at every stage.
Luxury House Extensions in London
At FrontierstroyUK Design & Build, we specialise in creating bespoke extensions for prime London homes, enhancing space, light and value through intelligent design and flawless execution. Whether you wish to expand your living area, create a dream kitchen or reconfigure your property to suit modern family life, our in-house team delivers extensions of the highest standard.
Our expertise covers every type of residential extension in London, including:
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Rear Extensions – perfect for open-plan kitchens and garden-facing living spaces.
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Side Extensions & Side Return Extensions – maximising unused areas to create elegant dining or entertaining zones.
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Wraparound Extensions – combining rear and side extensions for a dramatic increase in space and natural light.
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Two-Storey Extensions – adding both ground and upper floor accommodation for growing families.
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Two-Storey Rear or Wraparound Extensions – optimising property footprint with substantial new living space.
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First-Floor Extensions – expanding upwards to create additional bedrooms, bathrooms or offices.
Each project is tailor-made, carefully designed to respect the property’s character, meet planning requirements, and deliver lasting value. From initial concept and planning applications to construction, interiors and landscaping, our turnkey design & build process ensures seamless delivery with precision, discretion and timeless results.
Luxury Loft Conversions in London
At FrontierstroyUK Design & Build, we specialise in creating bespoke loft conversions that maximise living space while enhancing the character and value of prime London homes. Whether for an additional bedroom with en-suite, a private office, or a lifestyle space, our luxury loft designs are tailored to each client’s property and aspirations.
Our expertise includes:
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Mansard Loft Conversions – a stylish solution that creates substantial extra space while blending harmoniously with traditional London architecture.
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Dormer Loft Conversions – expanding roof space with elegant dormers, ideal for new bedrooms, bathrooms or flexible living areas.
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Pod Rooms – optimising the rear roof space above outrigger extensions, often used for home offices, guest rooms or creative studios.
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Hip to Gable Loft Conversions – transforming unused roof structures into full-width spaces, perfect for larger family homes.
Each loft conversion is meticulously designed to comply with planning regulations and building control, while incorporating features such as bespoke staircases, Velux windows, natural light solutions, underfloor heating, and premium finishes.
With our complete design & build process, clients benefit from architectural design, planning applications, construction and interiors — all managed by one trusted team. The result is a loft conversion that is not only functional, but a seamless extension of your home’s luxury and style.
