Some of our top rated extension builders in Marylebone, West London
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We are a specialist home renovation design and installation company with over 20 years of experience delivering high-quality bathrooms, wetrooms, kitchens, and full home renovations across London and the surrounding areas. When choosing a company to work in your home, experience, qualifications, and professionalism matter. Poor workmanship can lead to leaks, costly repairs, unsafe installations, and endless stress. That’s why customers choose us with confidence. Led by a WaterSafe Registered and fully qualified Chartered Plumbing & Heating Engineer, we provide expert workmanship to the very highest standards. We are also Certified Wet Room & Bathroom Installers, giving our customers the reassurance that every installation is completed correctly, safely, and built to last. We manage your entire project from start to finish, including plumbing, tiling, electrical work, painting, and final finishing touches — eliminating the hassle of dealing with multiple trades. Our bathroom and wetroom installations come with a comprehensive 5-year warranty, giving you complete peace of mind long after the work is completed. Whether you require labour only or a complete supply-and-fit service, we take the stress out of the entire process. From helping you design your perfect space to delivering a flawless finish, we create beautiful, functional rooms that add comfort, value, and quality to your home. With us, you are not just paying for a renovation — you are investing in qualified expertise, reliability, safety, and a finish you can be proud of for years to come.
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Quality service assured to all customers. Insured. All work guaranted quality work to domestic and commercial customers. Call us today for a free quotation. Work history Over 19 years of experience working all over London and sorrounding areas delivering excellent finish. We take on general building work, extensions, loft conversion, roofing, renovation, new build, tiling, Plastering.
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Tooled with years of experience, we undertake design & reconfiguration of builds; adding value to your home or business. Working closely with you; we create a bespoke, quality finish within your budget & affordability. Delivering a high standard of skill & integrity of craftsmanship we are proud off
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Ecoalex is a London-based energy efficiency retrofit expert with over 10 years of experience of making houses warmer and more pleasant to live in. The company offers tailored solutions for two distinct client groups. For London householders, we provide a full-service package including retrofit assessments, whole-house plans, thermal imaging, and biodiversity improvements like green roofs and living walls. We can provide you with a complete picture of the current energy performance of your house and how you can improve that with appropriate insulation, ventilation and renewable energy systems. Our in-house project management system ensures a transparent and seamless process. We are registered with Trustmark for our retrofit services and also signed up to the GRO code for green roofs. For PAS2030 qualified installers, we offer essential PAS2035 retrofit coordination services to ensure compliance with funding schemes like ECO4, GBIS, and more. We manage assessments, improvement plans, and lodgement with Trustmark, leveraging our experience to streamline your projects.
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H&S Building Contractors is a leading construction company based in London and Essex, specialising in both residential and commercial projects. We are dedicated to delivering high-quality craftsmanship and innovative building solutions tailored to each client’s needs. With a strong focus on sustainability and client satisfaction, we transform visions into reality while ensuring every project is completed on time and within budget. Our experienced team works diligently to maintain transparent communication, uphold the highest safety standards, and deliver exceptional results at every stage of the construction process.
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About Velvet Construction: 5+ year experience in the building trade. CSCS Black Card Holder All health and safety certificates. Velvet Construction has a large team of qualified tradesmen, delivering a high standard of workmanship at a competitive price. For more information on our services please contact us. We offer free quotations and all work is insured and guaranteed.
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For all your building needs: Extension • Loft • Bathroom Renovation Tiles Work - Plumbing • Electrical - Roofing Painting • Garden Work and repair work. House renovations and kitchen renovations.
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*PLEASE ONLY SHORTLIST US IF YOU ARE HAPPY WITH OUR QUOTE* We have many years of experience and, as such, have seen almost every imaginable plumbing and heating emergency that you can imagine, and we can fix them all. We aim to fix every problem on our first visit, in the fastest time possible. NO JOB TOO BIG OR TOO SMALL, WE DO IT ALL!!
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At Miko Construction, we specialise in high-quality residential refurbishments, extensions, and fit-outs. We’re a small, experienced team that takes pride in delivering well-crafted work with clear communication throughout. Whether it’s a full home renovation or a bespoke interior project, we bring a personal, hands-on approach from start to finish.
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Mark and his team of 8 have over 100 years of trade experience between them. Each member of the team has honed their craft in a specific trade from bricklaying to plastering, extensions to renovations. Working so close to each other and as a team, they create extensions and renovations to a high standard and always work on one job at a time to ensure a finish of high standards.
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Revospace – Building Better Spaces Revospace delivers high-quality refurbishments and property improvements across London and surrounding areas. With years of hands-on experience in residential projects, we understand how to combine strong workmanship with structured project management to deliver results on time and within budget. We have worked on full refurbishments, kitchens, bathrooms, flooring, carpentry, decorating and general building works. Our background in site management means we don’t just complete jobs — we plan, coordinate and manage them properly from start to finish. Based in London, we operate across Greater London and Essex, and are happy to travel for the right project. Our strengths include attention to detail, reliable scheduling, transparent pricing and clear communication throughout every stage of the job. We respect your home, keep sites clean and ensure work is completed to a high standard. At Revospace, we believe in doing things once and doing them properly — no shortcuts, no hidden surprises. Quality work. Clear communication. Professional delivery.
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Fatjon Renovations ltd. Own company, van and tools. Painter and decorator, kitchen and bathroom fitter, tiler, plasterer, carpenter, with years experience working in the London area.
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In our focus, we are interested in customer satisfaction, we provide guaranteed quality, we have the capacity to start work for the customer when he wants it at any time, and undoubtedly we have the most competitive prices in the market A1&PM is your home company, we are ready at any time, for any type of work and at any price, we will do your work
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We are a family business with over 70 years of experience in all building and renovations. We are happy to look at any work large or small. All works are fully insured.
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Cubitt Wren is a London refurbishment and restoration firm. We deliver full refurbishments, renovations, extensions, kitchens and bathrooms, and loft conversions - with particular care for the character of period and listed homes. Every project is led personally by a Project Director and delivered by our in-house trades: carpentry, joinery, plastering, stonework, tiling and decoration. One team, one point of contact, from first survey to handover. Before work begins, you'll have a detailed written scope and clear pricing, so you know exactly what's included and where you stand. A clear programme keeps you informed throughout, and our aftercare commitment continues beyond handover. We build homes and spaces we're proud to put our name to.
