Some of our top rated extension builders in Welwyn
Sort by:
- Get in touch
Hael Construction Ltd, a proud member of the Federation of master builders, is a trusted construction company based in North London, delivering high-quality building services across the region. We specialise in new builds, extensions, loft conversions, renovations, groundworks, electrical installations, and plumbing. With a skilled team of qualified tradespeople and experienced project managers, we provide a complete service from design to completion. Our focus is on quality workmanship, transparent communication, and delivering projects on time and within budget.
- Get in touch
Qualified Plumber with over 10years of experience in installing, Fitting pipework to kitchen sinks, baths, W.Cs, and central heating boilers Comprehensive installation of bathroom and kitchen systems Installation and maintenance of central heating systems (in both Unblocking drains and tracing the layout of pipework around the property Refurbishment work to bathrooms and kitchens Fitting and repairing taps, rowans and down pipes Installing and repairing domestic kitchen
- Get in touch
I'm a qualified bricklayer that is also is specialised in extensions, groundworks, outside drainage, patios, driveways, garden walls.
- Get in touch
Cosy Build is a new chapter in our journey, rebranding after over 10 years of trusted building and construction expertise across Harpenden, Radlett, Hertfordshire, North London, and surrounding areas. Based in Hertfordshire, our professional, reliable tradesmen serve St Albans, Harpenden, Radlett, North London, and nearby regions, delivering high-quality building services with a commitment to excellence. Formerly known as Luan Ajazi Home Improvements. Cosy Build is a family-run, customer-focused building company with deep roots in the Hertfordshire and North London construction industry. Our team consist of: Highly skilled craftsmen with decades of combined experience. Fully insured and certified professionals for your peace of mind. Local experts who understand the architectural styles and regulations of the area. What We Do & What We Care About Cosy Build is a family-run, customer-focused building company with deep roots in the Hertfordshire and North London construction industry. We specialise in: Loft conversions – Maximising your home's space and value. Loft conversions – Maximising your home's space and value. Home extensions – Seamlessly blending new spaces with your existing property. Renovations – Modernisin
- Get in touch
Family run buisness All aspects of roofing Offering a 10 year garentee on all new roofs.
- Get in touch
At Herts Sparks, we specialize in delivering high-standard electrical installations and bespoke designs tailored to your needs. With a keen eye for detail and a commitment to quality, we work closely with our customers to bring their vision to life-whether it’s a stylish home renovation, a cutting-edge commercial fit-out, or a complex industrial project. Our expert team ensures every installation meets the highest safety and efficiency standards while maintaining competitive pricing. From concept to completion, Herts Sparks is your trusted partner for reliable, professional, and innovative electrical solutions. Quality. Precision. Affordability. That’s the Herts Sparks promise.
- Get in touch
Home Comfort Design and Build Ltd have many years’ experience in both commercial and private property renovations specializing in Extensions, House refurbishment, Loft and Garage conversions, Driveways and Patios. We offer a full range of services from Architectural and Structural design to dealing with Council planning applications. Please get in touch for a friendly free-of-charge no obligation consultation. Many thanks, Graham
- Get in touch
I'm very punctual, reliable and sociable. Attention is paid to every detail. I always treat customers with respect, and my moto is: If a job is worth doing, it is worth doing properly. Everything is left clean and tidy. My focus is on ensuring a quality job and making the customer happy.
- Get in touch
The Burton Smith Group is team of exceptionally skilled engineers dedicated to delivering the utmost quality and standard of work. We prioritise thorough consultations at your residence to discuss your project. Throughout the duration, you will have a designated point of contact available at all times, streamlining communication. With all trades consolidated under one roof. We are fully insured across every trade, providing peace of mind within your home. Contact us today.
- Get in touch
MB Construction has been in the construction industry for over 10 years. Helping clients improve their home and garden space at a reasonable price and to a high standard of work.
- Get in touch
Hi my name is Daniel. I’ve been in the building game now for around 15 years. After college I worked for a house builder for 4/5 years before starting my own business. I’m a bricklayer by trade and I take utmost pride in my work and I carry myself as a professional from timekeeping to behaviour from me or anyone representing dth on site or domestic jobs. If you want your job done to a high standard with minimal fuss I’ll await your call.
- Get in touch
Hi We’ve been in the building trade 28 years give or take we have a many extensions complete to high standard which very in size , we are heats registered installers for over 14 years also installing all multi fuel stoves , flue installations , fireplace reconstruction, you can check out our facebook business page (Herts chimney services) loads of reviews on there . We always aim for the highest standard of works , we are reliable hard working team Herts chimney and construction services I will admit I could build you a house literally from the footings up right to completion but I wouldn’t say I’m the most technically skilled. I have hundreds of previous projects you could phone if you wanted more reassurance I’ve only really loaded fireplace installs with fireplace reconstruction there are some photos of buildings we have done recently. Please contact us you will soon see I’m honest and fair and take pride in reliability. Give us a chance it’s super hard getting your 1st contract on here. Thanks for time also Ive been told many many times if we do come across any issues/problems I will inform you and we would get a plan together unlike some show we say !!!! Contact us you won’t regret it 👌
- Get in touch
Hi, my name is Steve and we are a family business, I have been in the building and roofing trade for 40 years. My sons have worked with me for a number of years we have a lot of experience in all general building works and roofing. we do most of the work ourselves but if need be will bring in other trades to assist. This way you will only be dealing with myself or one of my sons. Thanks for looking at our profile, Steve.
- Get in touch
Orama is the family run Construction Company of choice, for large and small scale projects operating throughout London. Offering a bespoke service and setting new standards in the construction industry.
