Some of our top rated extension builders in Welwyn
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AJK BUILDING is a trusted name in the construction industry, delivering high-quality building solutions with a commitment to excellence, integrity, and innovation. With over 16 years of experience, we specialize in providing comprehensive construction services that include residential, commercial, and industrial projects. Our team consists of highly skilled professionals who work collaboratively to bring each project to life with precision and care. From initial planning and design to final execution, we ensure every phase is handled with professionalism, transparency, and strict adherence to timelines and budgets. At AJK BUILDING, safety, sustainability, and client satisfaction are at the core of everything we do. Whether it’s a small renovation or a large-scale development, we are dedicated to building spaces that last and relationships that grow.
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Sinevir Construction Ltd is a trusted construction company based near London, proudly serving the capital and surrounding areas. We specialise in residential and commercial projects, including new builds, extensions, refurbishments, and structural works. Our team of qualified professionals is committed to: High standards of workmanship Full regulatory compliance Clear and honest communication throughout every stage of the project Whether it's a small private renovation or a complex public contract, we approach each project with care, precision, and professionalism. What sets us apart: ✅ Construction Online Gold Member ✅ Skilled and experienced workforce ✅ NEBOSH-certified site safety supervision ✅ CHAS and SSIP-accredited for health & safety standards ✅ Fully insured, giving clients peace of mind ✅ Transparent pricing and realistic scheduling ✅ Respect for architectural heritage and local communities ✅ Competitive rates without compromising on quality We believe every property deserves thoughtful construction and reliable service — and at Sinevir Construction Ltd, we proudly deliver both.
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We have over 14 years of experience in the field of carpentry, joinery, roofing and loft conversions. We are based in Hertfordshire and are likely to have seen our name about. With having the experience and qualifications we take huge pride in our work making sure all jobs are carrried out to a high and reliable standard. We offer a free no obligation quote and advice to all potential customers.
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At Barnetts-bespoke we specialise in high quality custom carpentry and building solutions tailored to your unique needs, proudly serving all areas of Hertfordshire and London we offer high end craftsmanship for a wide range of projects including bespoke wardrobes, kitchens, bespoke storage solutions, and complete renovations Our complete list of services are listed below *kitchens *bathrooms *extensions * bespoke wardrobes/cabinetry *roofing *flooring * summerhouses * Returbishments * new build
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General Builder with 25 years experience, specialising in Brickwork. Extensions, Refurbishments. Patio's, Landscaping and Driveways all undertaken.
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10 years carpenter/builder Extension, loft extension and new builds Carpentry Kitchens, All roofs, doors, skirting,arch’s, stud walls, flooring, staircases Building work Footing, slabs, patios, fencing
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JDL Construction Limited are a Hertfordshire based building company offering both domestic and commercial services. We specialise in all aspects of construction including Home Extensions, New Builds, Garage Conversions as well as specialist Brickwork Contractors. Our company is fully insured and our tradesman are all fully qualified. JDL are members of many trade associations including Constructionline, CHAS, Federation of Master Builders and Federation of Small Businesses.
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20 years experience in the trade, I have worked with 24 hour maintenance and emergency companies gaining untold amount of knowledge on all sorts of plumbing systems. More recently I have been working on big building sites installing from new, house refurbishments, bathrooms and boiler changes.
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We've been ground-workers for over 16 years now and we've got lots of experience. We specialise in many aspects such as groundwork, driveways, landscape gardening, underpinning, paving, foundations, extensions, fencing and general building work. Our jobs have a warranty and also guarantee to complete all jobs to a high standard.
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Small building company covering all aspects of building specialising in bathroom & kitchen installations , experienced tradesman with a huge knowledge of the building trade with polite free advice given & free quotations. If you require more pictures of my works then drop me an email and I can send them . Regards Mr R D Pulfer
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My Craft Building Solutions Limited are a family run business, and we offer all aspects of building services. No job too big or too small with a lot of our work done for Anglian home improvements we understand the importance of customer care We specialise in: Extensions Conversions Porches Bricklaying
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Garden Fencing, Garden Decking, Artificial Grass, Wooden Floor Laminating, Decorating, Partitions.
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Hatch Building & Construction are a local family run business who take pride in their reputation, delivering a high standard of work and completion on all projects. We offer a full design service for all our projects incorporating architects, structural engineers and designers, this means we can offer a full in house service from conception through planning, building control and conservation. We are a member of the FMB where you can find testimonials from previous customers.
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We represent a new construction company with many fields of activity, such as meintenance, cleaning, extensions a.s.o. We are more than happy to tackle any chalange.
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Jordan & Sons are a family run business with over 30 years experience specialising in extensions, new builds, all types of groundwork, drainage, brickwork, driveways, patios, resin bound & block paving. The work we carry out is second to none, finished to a high standard while providing an excellent service. We own our own plant with relevant tickets, & we take on all commercial and domestic projects.
