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Find an Extension Builder in Welwyn
Find a local extension builder near you. We have 6,825 trusted and reviewed extension builders in Welwyn to choose from, based on 2,681 reviews.
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Extension Builders in Welwyn
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Welcome to Edward Construction, your trusted driveway contractors based in the heart of South Hornchurch. We proudly serve the vibrant community of Havering, London, with our expert driveway services. Our team is dedicated to transforming your outdoo...
Latest Floor Tiling Review
"Conducted the job, quickly and thoroughly and to expectation. Kept informed through every step of the way. Would recommend for future work."
Reviewed by Jamie on 14th Apr 2025Based in AL10 9GS,
Hatfield
Extension Builder covering Welwyn
Member since Feb 2025
ID Checked
At BridgePoint Builders Network, we take pride in ensuring all work gets completed to a high standard, maintaining customer satisfaction, this is done by our connections with outstanding local tradesman, Allow us to take away the hassle and uncertai...
Latest Extension Review
"They did excellent job and they were very honest and professional in doing their job. I am glad of appointing them and I wish the very success for this company."
Reviewed by Raad on 2nd Sep 2025Based in IG10 2NW,
Loughton
Extension Builder covering Welwyn
Member since Jul 2025
ID Checked
Small building contractor, patios, driveways, landscaping, garage and shed bases, painting and decorating. Based in Herts.
Latest Concrete Base Review
"Polite, respectful, experienced and skilful. Great tradespeople who I will use in the future for many varied tasks and projects."
Reviewed by Richard on 12th Aug 2025Based in AL1 5ST,
Saint Albans
Extension Builder covering Welwyn
Member since Jul 2025
ID Checked
Independent sole trader. Small builds - patios, gardens, sheds, summerhouses, general tidy-ups, brickwork and general handyman work. Reasonable and fair pricing. References and photos of past work completed available upon request.
Latest Wooden Decking Review
"⭐️⭐️⭐️⭐️⭐️ We had an excellent experience working with Joe. He came over to give us a quote and carefully walked us through options that suited a low, mid, and slightly higher budget—which showed how transparent and considera..."
Reviewed by Yu on 12th Jun 2025Based in SG3 6DU,
Knebworth
Extension Builder covering Welwyn
Member since Mar 2025
ID Checked
I am Florin, working as a self employed. As always, I loved to respect my clients and give them my best. ? with hard work to achieve always 5*.
Latest Concrete Base Review
"The service was excellent from start to finish. From the original quote, someone came to my house to take the right measurements to quote my job. I was happy with the quote and proceeded with the job. A team of 2 people complete t..."
Reviewed by Kos on 10th Jun 2025Based in SG2 8QR,
Stevenage
Extension Builder covering Welwyn
Member since Nov 2020
ID Checked
JCU who are we? We are a company that started as a dream by the director Joe Abbott. To build a better construction and plant hire image and take away the stress away from building your future. We own various plant that will help you drive costs dow...
Based in AL6 9SU,
Welwyn
Extension Builder covering Welwyn
Member since Jan 2023
ID Checked
After almost 20 years in supply of materials to the Trade, we decided to put our knowledge into practice and deliver high quality, reliable and honest workmanship, utilising a vast database of experienced and highly motivated tradesmen. We have va...
Based in SG3 6JS,
Woolmer Green
Extension Builder covering Welwyn
Member since Aug 2024
ID Checked
i’ve been on the business for 25 years I do all types of building work, internal and external, Very high standards work, House renovation, extension, loft conversion, and new built.
Latest Garage Conversion Review
"Alfred and his crew were professional, flexible and found cost-effective solutions. Highly recommended"
Reviewed by Malcolm on 9th Sep 2025Based in N13 6HJ,
London
Extension Builder covering Welwyn
Member since Mar 2024
ID Checked
2Rok cons is a dynamic and experienced team, committed to providing excellence in general building and constructions, lateral thinking and innovation solutions to our clients. With a portfolio covering a wide range of construction projects, we are pr...
Latest Builder Review
"2Rok cons ltd has just finished creating our dream Kitchen. From our first meeting to finishing the project, they listened to what we wanted and gave us design and material guidance for our kitchen extension. We are very fussy wit..."
Reviewed by Craig on 27th Jul 2025Based in WD7 7LW,
Radlett
Extension Builder covering Welwyn
Member since Nov 2023
ID Checked
More then a decade of experience in uk domestic building i am a excelent carpenter and I have big experience in roofing (pich roof flat roof etc) good skill in painting,tiling,plastering,drylining etc We are a complete team with including all the spe...
Latest Log Cabins / Timber Framed Building Review
"A fantastic and amazing friendly customer care and service , together with a very perfessional 100 % 100% craftsmanship, very reliable delivered on his work ,I will be using his services again,I will be highly recommending his s..."
Reviewed by David on 26th May 2025Based in HA5 4HR,
Pinner
Extension Builder covering Welwyn
Member since Mar 2023
ID Checked
Ex site manager with a lot of experience in build and technical. Very well informed in regards to building control. No job too small, please get in touch to see how I can help bring your project to life.
Latest Builder Review
"This is the second time I’ve used Oz and I’m delighted with the quality of the work. Oz has a wealth of experience and knows how to do things properly. He really cares about the quality of his work, and is a great problem solver a..."
Reviewed by Jerry morris on 19th May 2025Based in LU1 5LG,
Luton
Extension Builder covering Welwyn
Member since May 2024
ID Checked
W & J is a small, trusted team of builders dedicated to delivering high-quality workmanship on every project—big or small. We specialise in all aspects of building, from renovations and extensions to new builds and repairs. With a hands-on approach a...
Latest Internal Rendering Review
"We recently had Jan and his team over to replaster and rebuild a deteriorating wall and ceiling in the extension of our home, which connects to the main house. From start to finish, the entire experience was outstanding. The work..."
Reviewed by Aqeel on 6th May 2025Based in E4 8HB,
London
Extension Builder covering Welwyn
Member since Jan 2023
ID Checked
We are a small family business and have over 40 years experience We carry out work in Herts Beds Bucks We carry out Fencing and Gates Repairs and Renewals External/Internal Repairs and Decorating We are fully insured and our inspections quotes and ad...
Latest Chimney Building / Repair Review
"Very happy, will definitely use Gary again."
Reviewed by Rita on 14th Apr 2025Based in HA8 6SD,
Edgware
Extension Builder covering Welwyn
Member since Mar 2025
Public liability insurance
Brother construction is truly trustworthy team to build up your dream houses. We do all kind of work Extensions Loft conversions Bathrooms renovation Plastering Skimming Painting Roofing Electric Feel free to conact with us Free qoutes also availa...
Latest Extension Review
"They completed the job as promised and I was satisfied with their work."
Reviewed by Nadira on 18th Mar 2025Based in UB4 0BZ,
Hayes
Extension Builder covering Welwyn
Member since May 2024
ID Checked
Kings Brickwork & Property Maintenance • Over 20 year’s experience • Brickwork and Heritage repairs • Ground works • Internal and External repairs and Construction • Kitchen instillations • Office fit outs • Free quotations and advise
Latest Brick/Block Paving Review
"Adam did a fantastic job, communication was great and he completed the job within the week. Pricing was fair. Would definitely recommend"
Reviewed by Emily on 8th Mar 2025Based in AL7 3XF,
Welwyn Garden City
Extension Builder covering Welwyn
Member since Dec 2024
Public liability insurance
20 years ago we started a handyman service in and around Welwyn Garden City , this grew into setting up a building company as the work and size of the jobs grew with all the happy customers LOCAL BUILDER 15 YEARS QUALITY WORK WITH LOTS OF RECOMENDA...
Based in AL7 3UW,
Welwyn Garden City
Extension Builder covering Welwyn
Member since Jul 2023
ID Checked
Your local building firm with over 10 years experience
Based in AL6 9JG,
Welwyn
Extension Builder covering Welwyn
Member since Mar 2024
Complex Construction LTD We do professional ,affordable and best quality of building services -Tarmac surfacing -Driveways -Home extension -Brickwork -Tiling -fencing 100 % Guarantee and 10% Discount 10 years warranty For free quotation call Claudio
Based in AL7 1NH,
Welwyn Garden City
Extension Builder covering Welwyn
Member since Apr 2025
ID Checked
Efjprojects.com Is a family run Building Company. They delivery high standards and beyond. Covering all aspects of Building works, Property development and Landscape to create your perfect outdoor space.
Based in AL8 7XE,
Lemsford
Extension Builder covering Welwyn
Member since Apr 2024
Hi, we are a building, electrical and refurbishment company in wgc, we carry out garage conversions to re-wires and everything in between, all trades covered, fully insured , niceic and gas safe certificates issued, we also work in the commercial se...
Based in AL7 3UW,
Welwyn Garden City
Extension Builder covering Welwyn
Member since Jan 2023
ID Checked
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All reviews are submitted by homeowners who have had work completed as part of using our service. Whilst every effort is made to verify and check reviews, we ask all homeowners to conduct their own research and follow our Homeowner Checklist before hiring.
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