Some of our top rated conversion specialists in Winchmore Hill
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Design & Build projects that squeeze more out of every pound spent. We’ll deliver an outcome for you that looks a lot more expensive than it really is. It will be tailored to your lifestyle, designed for your senses and fine-tuned to minimise lifetime costs. If you have an eye on value, or looking for maximum ROI, we’ll deliver more for less. It’s about smart design and construction, so the result gives you more performance, better quality of life and a stronger return from your budget.
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ONE COMPANY. ONE PROCESS. ONE POINT OF RESPONSIBILITY. Hi, I'm George Sora, Certified Passive House Designer and founder of RetrofitIQ powered by G.A.S General Building Services Ltd. My approach is different from traditional builders because every recommendation and every upgrade is based on proven Passive House Principles and building physics, not guesswork. Whether the problem is condensation, mould, damp, heat loss, air leakage, poor ventilation, uncomfortable rooms or excessive noise, I follow a structured process designed to identify and solve the root cause: INVESTIGATE → DIAGNOSE → DESIGN → REMEDIATE → VERIFY Using professional equipment including thermal imaging cameras, moisture meters, blower door airtightness testing, smoke tracing and ventilation assessments, I can identify hidden defects that are often missed during standard inspections. As a Certified Passive House Designer, I apply the five key Passive House Principles wherever appropriate: • Airtightness • High Performance Insulation • Thermal Bridge Reduction • High Performance Windows & Doors • Controlled Ventilation This allows me to deliver solutions that are not only visually finished to a high standard, but also healthier, more comfortable, more energy efficient and built to perform long term. Services include: • Thermal Imaging Surveys • Blower Door Airtightness Testing • Damp, Moisture & Condensation Investigations • Ventilation & Indoor Air Quality Assessments • Soundproofing & Acoustic Improvements • Internal Wall Insulation • Loft, Floor & Roof Insulation Upgrades • Air Leakage Reduction • Retrofit & Energy Efficiency Improvements • Refurbishment & Building Works From diagnosis through to completion, clients deal with one company and one accountable team. No guesswork. No unnecessary treatments. Measured. Diagnosed. Designed. Remediated. Verified.
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With over 12 years of experience in the construction industry and an admirable track record, M&G Home Improvement can have confidence in providing remarkable levels of competence and expertise from new-builds to all refurbishment projects. We are very well recognised within the construction industry for our broad-mindedness, honesty and accuracy in our work. We recognise the needs of our clients and our devoted team that can accomplish even the most complicated challenges with confidence.
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Over 20 years of experience in the building industry, comprising of a female work force and established tradesmen built with experience and hard working approach.
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UK Crown has experience of design and build in all types of construction work in central, north and north west London for the last 20 years with exceptional quality finishing, friendly management and supervisors, design team, staff and sub contractors. The client will get benefit of FREE advise for architectural and structural ,mechanical and electrical, including party wall matter from our company and associates.( Subject to contract ) Terms and conditions
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Inside Out was formed in 2009. We are an established, London based building company operating throughout London and within the M25. We deliver an honest and straight forward service, with quality workmanship at the forefront of everything we do.
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I am a professional, reliable, and hardworking builder dedicated to delivering high-quality workmanship and excellent customer service on every project I undertake. I take great pride in my work and always aim to complete every job to a high standard, ensuring that my customers are fully satisfied with the finished result. I understand that choosing a builder is an important decision, and I always strive to provide a service that is trustworthy, professional, and stress-free from start to finish. My approach to building work is simple: be reliable, communicate clearly, work safely, and deliver quality results. I believe that professionalism is just as important as workmanship. Turning up on time, being respectful of a customer’s property, keeping the work area tidy, and maintaining clear communication throughout a project are all essential parts of the service I provide. I treat every job, large or small, with the same level of care, attention, and commitment. I have experience in a wide range of building and property improvement work, including general building, repairs, maintenance, renovations, interior improvements, exterior work, and property upgrades.I am happy to take on both small jobs and larger projects.
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Based in London & covering South East England , C1 Construction & Development Services Ltd , trading as C1 Builders , is run by a highly experienced, hands-on management team with a dedicated, friendly & loyal workforce. Specialists in residential projects. Side returns , single & double storey extensions , full refurbishments and new builds . Just approved for the Federation of Master Builders References and current site visits available upon request Free Quotations
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JH City Property is a London-based renovation company delivering high-quality residential and commercial projects. With over 18 years of experience, we specialise in full property refurbishments, including painting and decoration, flooring, kitchens, bathrooms, roofing, and structural works. All projects are carried out by our in-house team, ensuring consistency, reliability, and attention to detail from start to finish. We focus on practical design, durable finishes, and delivering work to a high professional standard. We offer free site visits and quotations, and can also provide initial estimates from photos or floor plans.
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we have 10+ years of experience and provide high quality of workmanship in every aspect of building services from refurbishments to loft conversion and extension.we are professional team of skilled builders, tillers, bricklayer, carpenter, painter and provide services for plumbing and electric work.
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Cygnus Contracts is a London-based construction company dedicated to delivering high-quality projects that exceed client expectations. We specialise in both commercial and residential refurbishment projects within London and the home counties. We aim to change the status quo and provide a modern approach to construction and project delivery by building relationships with the key focus on repeat business, collaboration and client satisfaction.
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The company’s success is built on the strong belief of quality work, attention to detail and on-time completion. Rea Construction Ltd has an in house team of builders, architects, and interior designers with all the relevant skills and qualifications which enable us to offer a fully comprehensive design and build service. Get in touch today for a free on site consultation.
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We are a small construction company that deal with loft conversions, extensions, structural work, refurbishing, electrical(with certificate), plumbing as well as bathroom work, kitchen fittings, wood floor, tiling, drainage, patios, driveways, outhouses, new building etc. 17 years of experience in improving customers comfort. Many satisfied customers along the years. References available upon request( some projects can be seen). We are looking forward in working with you, all work is contract based, we are fully insured for the work we do.
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20 years experiencies from construction /domestic and commercial/, all interiors and exteriors work to high standart and on time.
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Established Builders with over 25 years experience providing quality workmanship at affordable prices. Offering traditional and contemporary building techniques turning houses in homes, Quality work is our key to customer satisfaction.
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A multidisciplinary construction firm with a focus on custom construction, Bass Construction/Design was established in 2013. Our team provides services for residential and commercial properties from the planning to construction stages with the goal of creating spaces where functionality and aesthetics coexist.
