Business Details
Bespoke Glass Extensions in London
Glass Design & Build London is a specialist design and build company dedicated to creating innovative glass structures that redefine luxury living. With an in-house architectural team, we focus on transforming homes through contemporary extensions, door systems, and bespoke glazing solutions. Our engineering-led approach ensures every project pushes creative boundaries while maintaining structural integrity. We manage projects from concept to completion, offering a seamless turnkey service that includes planning, design, construction, and interior architecture. Our expertise in structural glass allows us to deliver light-filled, connected living spaces tailored to individual client visions. With decades of combined experience, our team combines technical precision with artistic flair to overcome design challenges and exceed client expectations.We prioritise transparency, using advanced 3D laser scanning and bespoke engineering to ensure accuracy at every stage. Our commitment to quality is reflected in our use of premium materials, attention to detail, and dedication to creating spaces that enhance both functionality and aesthetic appeal. Clients benefit from our single-point communication model, which streamlines decision-making and ensures clarity throughout the project lifecycle. Our reputation is built on delivering transformative results that align with evolving lifestyle needs while maintaining a focus on sustainability and energy efficiency.
Services
Glass Extensions
Door Systems
Glass Structures
Architectural Glazing
Contemporary Extensions
Glass Flooring
Rooflights
Glass Balustrades
Structural Glazing
Kitchen Extensions
Highlights and features
- We offer a complete turnkey solution from design to final handover
- Our single point of contact simplifies project communication
- We handle complete site management for all construction phases
- Our in-house team has decades of specialist glass expertise
- We use advanced 3D laser scanning for precise measurements
What people say
Exceptional attention to detail
Amazing amount of glass
Stunning countryside views
High-quality craftsmanship
Professional team
Services
Glass Extensions
Our bespoke glass extensions create seamless transitions between indoor and outdoor spaces. Using advanced glazing technology, we design energy-efficient structures that maximise natural light while maintaining thermal comfort. Each extension combines structural integrity with minimalist aesthetics to enhance property value and living space. Clients benefit from our end-to-end service including planning permission assistance and complete construction management.
Door Systems
We specialise in premium door systems featuring oversized sliding and pivot designs. Our solutions incorporate thermally broken aluminium frames and high-performance glazing for security and energy efficiency. The minimalist designs create unobstructed views while allowing maximum light transmission. Custom options include motorised operation, solar control coatings, and integrated blinds to suit both contemporary and traditional properties.
Glass Structures
Our structural glass solutions include walk-on floors, balustrades, and frameless glazing systems. Using extra-clear glass and advanced engineering techniques, we create durable, load-bearing elements that enhance spatial perception. Each installation features precision-engineered connections and incorporates safety laminates where required. These structures provide both functional benefits and striking visual impact for residential properties.
Rooflights
We design and install rooflight systems that transform interior spaces with natural light. Our solutions include fixed, sliding, and pyramid designs with optional smart controls for ventilation and shading. Triple-glazed units with low-E coatings ensure thermal efficiency while self-cleaning glass reduces maintenance. These installations improve energy performance and create a sense of openness in both new and existing properties.
Kitchen Extensions
Our glass kitchen extensions create bright, open-plan living spaces that connect to outdoor areas. Featuring structural glazing and integrated smart technology, these designs maximise daylight while maintaining thermal comfort. We incorporate bespoke storage solutions and premium finishes to create functional yet stylish environments. Each project includes complete fit-out with coordinated lighting and climate control systems.
People
Mark Bonnington
CEO
With over 30 years' experience in architectural glazing, Mark leads our design team in creating innovative glass structures. He oversees project strategy and ensures technical excellence across all installations, combining creative vision with engineering precision to deliver bespoke solutions.
Questions
Do your glass extensions require planning permission?
Many projects fall under permitted development rights, but we handle all planning submissions including conservation area and listed building consents as required.
Can you incorporate smart technology into installations?
Yes, we integrate smart controls for lighting, climate, and security systems within our glass structures and extensions.
How do you ensure thermal efficiency in glass structures?
We use triple-glazed units with low-E coatings, thermally broken frames, and solar control glass to maintain year-round comfort.
What areas do you operate in?
We work throughout the UK, Europe, and internationally with projects completed in diverse locations.
Do you handle complete project management?
Yes, we provide full turnkey service managing all aspects from design through to final handover.
What materials do you use for structural glass?
We use extra-clear glass with advanced laminates, structural silicone bonding, and stainless steel fixings for durability and strength.
Reviews (5)
Hilary Stirling
May 07, 2019
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Highly recommended. Two separate projects (mid-terrace townhouse): conservatory, patio, external lighting and rear windows in 2011/12, then front windows, soffits, fascias etc and an entrance/front door in 2015. Really thorough, innovative planning & design and excellent execution, including all communications and regulatory compliance. Designers went over and above to accommodate specific desired features. They really listened to what I wanted to achieve, and the finished result actually surpassed that. The whole team are very experienced, skilled, friendly, trustworthy, approachable and professional
Ljh Dog
Aug 10, 2018
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I had a glass extension built by glass design and build they went bust we have no garantee. Glass design and build uk are run by the same people. I went to this office they have posted as there address it is a mail forward post box. They did not finish my job I had to ask my builder he was great. Would I recommend them to anyone no. Check there director out at company house dont be coned.
Ljh
Ljh
Graham Spencer
Jul 21, 2018
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My wife and I wanted to create something special, we were inspired by the designs and ideas of the designer who visited from Glass Design and Build. We needed planning permission and I am pleased to say we didnt have to do any of this it was all taken care of by this company. We now have a stunning glass floor above the childrens play area and our kitchen opens out to the garden. Highly recommended.
Paul Evans
Jun 26, 2018
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I recieved a great service from the designer, we had a number of companies out before Glass Design and Build but we found they offer a huge selection of products from around the globe and have a real flare when it comes to design.
Sarah Harrison
May 27, 2018
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I am really pleased with the work done on our kitchen extension, large sliding door and a glass floor to our converted basement for entertaining family and friends. Highly recommended.
