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Craig got in touch quickly, gave me a rough estimate over the phone and answered all my questions. Surveyor arrived on time, gave instant quote. Price was good. Michael and (another) Craig turned up to do the job on the day, time given. Good, tidy job. Can't fault anything, from start to finish!! Would recommend!

Mary

George and his team are experienced builders, replaced my front door with a custom frame/sidelights and raising the floor level in the hallway quite quickly - in fact, they were the only who came next day, gave a quote straightaway and were ready to start in just couple of days. They also had all the necessary tools and materials, were ready to buy something additional quickly on the day - if further adjustments were required to fit everything as I asked. Thanks a lot for your help, guys!

Dmitry

Highly recommend. These guys did a fantastic job of constructing our pergola and decking. Very hardworking and reliable. The job was completed in the time frame agreed and to a very high standard. We would 100% use them again.

Holly

Browse reliable Builders in Welwyn

Take a look at rated Builders serving Welwyn, read reviews and submit your job for free.

Quebuild London Ltd offers a full building service with every aspect of works covered no matter the scale or scope of works to both residential and commercial buildings.We also provide proactive and reactive maintenance packages with 24/7 one hour service for emergency call outs.We pride ourselves on using only highly skilled and courteous tradesmen with all trades in house so as a company we have full control of our projects. From your initial meeting with one of our knowledgeable estimators who provide fixed price detailed estimates to completion of works overseen by amazing management our clients needs are paramount,this ensures a streamlined service with quality controlled finishes beyond the industry standard. We have full public liability insurance with all risk assessments and method statements in place at all times no matter the size of works for peace of mind for us as a company but more importantly you as our client.

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Reviewed by Tom on 3/8/2024

John at Quebuild went above and beyond for us on this job. He completed all the work in a timely manner and for a very reasonable price. He was super knowledgeable and extremely attentive to detail, making sure to leave a high quality finish in terms of decoration - and he came back afterwards to address a few small things that needed doing. He was also a pleasure to have around - and I would highly recommend him for any other work. 10/10.

17 years of experience and a customer-centric approach, we're proud of every job we do; whether it's fixing electrics, landlord certificates, emergencies, performing repairs or working on major installations. That's why every job includes a minimum 1 year guarantee.

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Reviewed by Leo on 15/12/2025

Good-quality work done to replace the thermostat for electric underfloor heating. Communication was good and the electrician arrived on time, not leaving until he was satisfied everything was working correctly. Recommended!

Vanish Waste Management is a comprehensive waste management service dedicated to providing efficient, sustainable, and reliable solutions for residential, commercial, and industrial waste disposal for 3 years. Our services include curbside pickup, emergency same day call outs , hazardous waste disposal, and tailored waste management plans designed to meet the unique needs of our clients. With a commitment to punctuality and reliability, we ensure that your waste is collected on time, every time, allowing you to focus on what matters most to you.Experience the difference of working with a waste management partner that truly cares about the environment and your community.

ERA Construction Solutions Ltd WHO ARE WE? The story of our team, 16 years and going really strong: For a decade, Era Construction has been leading the way in all aspects of luxury design and build. Whether you're looking to expand or refine your home with a loft conversion, rear or side extension, basement excavation, cellar conversion or a top to bottom refurbishment. We also complete home renovations, roofing work and bespoke projects. Our ethos is quality-first craftsmanship for the very best in residential design and build in London. From small touch-ups to full property refurbishment - we make a neat job of it all. WHY OUR BUILDING COMPANY? When it comes to the quality and care that we put into every project, we think of ourselves as one of the leading building companies in London. This means that, as the right builder, we have the team, the expertise and the commitment to a high quality that sets us apart. 1. Fully insured with Public and Employers Liability, Professional Indemnity, Contractors All Risk and high-risk basement works. 2. We offer a 15-year guarantee on all of our structural building work. Proficiency only uses the highest quality building materials ensuring everything is built to standard and will last. 3. We have a large team of office-based staff, including a dedicated project manager providing you with peace of mind and security throughout your project.

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Reviewed by Shanti on 27/7/2024

The job is still going on not completed yet I will rate when the bathroom renovation is completed

We are a small company, specialising in supplying quality workmanship, to customers, all our installers have aquiared many years of experience, this includes electrician, carpenters, painters, floor layers , we specialise in garage conversions, and refurbishment work ,

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Reviewed by Sybil on 19/7/2025

DO NOT USE THIS BUILDERS THEY ARE ROUGH TRADERS

Windowell is not your typical glazing company. Why? Because we genuinely care about our clients and the quality of work that we do. We specialise in all things glazing and offer a range of products designed to suit every requirement and budget. Whether you are looking for straight-forward PVC windows or you would like to discuss some architectural glazing please allow us the opportunity to provide a quote where we will demonstrate why Windowell is the perfect partner for you. No matter your glazing requirements, Windowell can offer you the solution. Our product range includes: - PVC Windows & Doors - Aluminium Windows & Doors - Timber Windows & Doors - Composite Doors - Bifold Doors - Sliding Doors (including new slim sightline range!) - Porches & Conservatories - Extensions & Sunrooms - Cupolas & Roof Lanterns - Velux Windows - Glass Balustrades & Composite Decking - Garage Conversions - Commercial Glazing & Curtain Walling So if you have an upcoming project - no matter how big or small - please allow us the chance to provide you with a quotation. We know you won't be disappointed.

M25 Plumbing & Heating is your reliable solution for all your plumbing needs. Specializing in bathrooms, kitchens, and central heating systems, we offer comprehensive services to ensure your home's plumbing is running smoothly. From basic plumbing installations to emergency repairs, our team has plenty of experience to handle any situation efficiently and effectively. With a commitment to quality workmanship and customer satisfaction, you can trust M25 Plumbing & Heating to deliver exceptional service every time.

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Reviewed by Spencer on 20/12/2025

Very strong recommendation for Adam. My shower temperature has not been great for a while. A previous plumber scared me by implying it was a major job - replacing, retiling, expensive, destructive - so I put it off. Charlie, however, managed to sort it by just correctly fitting the cartridge. No fuss, minimal cost. Brilliant.

Hello and Welcome to C M Painting and Decorating Services. With over 16 Years Experience We Strive to meet all of existing Customers and new Clients needs when it comes to it. We are Fully Insured through Simply Business and look forward to hearing from you in your next Project.

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Reviewed by Gregory on 20/5/2025

Craig was polite, hard working and efficient. Would recommend to others

Nextlvl Construction (London) We carry out renovations, extensions and building work across London and nearby areas. We’ve been trading for 7+ years. We focus on jobs being: properly planned kept tidy finished to spec done with clear pricing and communication What we do: Extensions & conversions: lofts, basements, garages Renovations: full refurbs, layout changes, structural work Kitchens & bathrooms: rip-out to finish, including plumbing and electrics Carpentry & joinery: fitted units, doors, stairs, custom work Roofing & exterior: flat roofs, fascias, soffits, cladding Finishing: plastering, tiling, flooring, painting and decorating Security & tech: CCTV, alarms, AV installs Cleaning: post-build and end of tenancy How we work Written quotes with a clear breakdown Realistic timelines and updates as the job progresses Site kept tidy and waste cleared Building regs considered from the start Snagging handled properly before sign-off If you’re planning work, we can take a look and provide a free quote. - Fully insured. - References available. - Before and after photos of recent work available on request. - We can work to drawings or help you plan the build. - We’re used to working in occupied homes.

Property Renovation & Decorating Services "Excellence in Construction, Passion for Detail" With over 17 years of solid experience in the construction industry, our team provides comprehensive renovation and interior decorating solutions designed to bring your vision to life. Led by Emy, a professional renowned for his rigor, integrity, and craftsmanship, we are committed to delivering every project to the highest standards of quality. Our Services We offer a wide range of construction and finishing services, professionally managed from initial concept to final handover: Extensions & Conversions: Expert loft conversions, home extensions, and new builds. Full Renovations: Complete modernization of houses and apartments, including bespoke kitchen and bathroom installations. Premium Finishes: High-end interior and exterior painting, professional plastering, and precision tiling. Flooring: Installation of solid wood, engineered flooring, and carpet fitting. General Building: Structural repairs, general maintenance, and full-scale property refurbishments. Why Choose Us? Our reputation is built on four core pillars that ensure every client receives exceptional service: Attention to Detail: We believe perfection is in the finishing touches; every task is executed with surgical precision. Timeliness: We respect your schedule and strictly adhere to agreed deadlines. Transparency: Open communication and honest, competitive estimates with no hidden costs. Proven Expertise: Over 17 years of successful projects and satisfied homeowners. Contact Us for a Free Estimate Ready to start your home transformation? Contact us today for a free consultation and a personalized quote.

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Reviewed by David on 19/11/2025

Fedora and Sons Ltd is your trusted construction and renovation partner in London and its surroundings. Our dedicated team of 5-10 skilled professionals specializes in a wide range of services, including roofing, building, bathroom fitting, floor fitting, gardening, carpentry, driveway paving, and more. With a commitment to quality, clarity, and efficiency, we deliver superior results across all trades. Count on us for clear communication, quick response times, and unmatched expertise to bring your vision to life.

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Reviewed by Joanne on 13/1/2019

Very pleased with the work carried out which was to a high standard. Reliable and hard working. Quality of work excellent at very good value.

LMM BROTHERS LTD is family business with over 20 years of experience providing excellent services such as painting and decorating works. We are specialising with internal and external decorating works, wallpapering and also we provide spraying service ( walls, ceilings, woodwork, cupboards, panels, wood waxing and varnish and much more). Lmm brothers team operates throughout London offering our existing and future clients fantastic and high quality services. Contact us if you are looking for honest,reliable,experienced and friendly contractors.

H&R Renovations ltd always aims to deliver a high standards of work qualities to satisfy all my clients expectations and meet theirs satification.

Hi all , A bit about myself my names Scott I’m skilled in many departments in the construction industry , Speciality’s Qualified painter & decorator , I also have qualifications in damp works rising penetrative & mould issues , I also cover roofing issues , erect fences and cover a lot of carpentry work , I’m professional great communication as that’s paramount im punctual and never leave a customer unsatisfied , I would love to show case my skills at your home , 35 years experience in construction . Regards Scott

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Reviewed by Kim on 11/2/2026

We have been running our cleaning business for almost 12 months, we have many years cleaning experience. We strive to provide a tailored quote to suit each job, have a look at our website and Facebook page,

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Reviewed by Jake on 21/10/2024

Very professional, fantastic and friendly cleaners, left the place looking and smelling fantastic, would have them back!

I've been in the building trade now for around 17 years, specialising in carpentery and kitchen fitting but carry out most aspects of building work too.

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Reviewed by Julian on 24/12/2023

Dan and his team were outstanding. Extremely personable, professional and straight forward. They arrived when they said they would arrive, did a great job creating the roof truss structure and were competitive on price. I would strongly recommend them for anyone looking for a carpenter.

jarad London Construction Company have partnered with homeowners, designers and architects to deliver unrivalled construction, renovation and refurbishment services across London and the Home Counties.

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Reviewed by Khin on 25/8/2023

job is done very quickly.

Here at Bluecrest Property Developments , we are dedicated to providing top-notch roofing and building services that exceed our customers expectations. With years of experience and a team of expertly trained professionals that pride ourselves on customer’s satisfaction, we understand the importance of top quality work let it be a small roof repair or a large new roof or let it be a small repointing repair or a new wall build.

Calladine Services is a family run business which has been established since 1989. We specialise in painting agricultural, industrial and domestic buildings with our access platforms and American airless spray units.

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Reviewed by Peter on 14/9/2025

Welcome to Our Rated People page. We are a family run business with over 20+ years of roofing experience. At L.Pickard Roofing we aim to deliver a bespoke service to all our clientele. Be it a small repair or an all out Roof Renewal, you can always count on L.Pickard Roofing for a professional, punctual and reliable service. We are all about honesty and provide the best possible work for a very reasonable price. All our uploaded pictures are of genuine work completed by us unlike many companies using generic internet roofing pictures. We specialise in but are not limited to: . Partial and Full Roof Renewals in Tiles or Slates . Supply and Installation of the Newest most Efficient Solar Panels . 3 Layer Felt Roof System Installations . Concrete Gutter Lining . Lead Installations and Repairs . Chimney Stack Repairs, Rebuilds & Removal And much, much more... We have a 5 Star Rating with over 250 reviews from happy and returning customers. For all your roofing needs and queries please contact us directly through Rated Peoples Messaging / Call service.

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Reviewed by John on 21/12/2025

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