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Find an Extension Builder in Harpenden
Find a local extension builder near you. We have 5,445 trusted and reviewed extension builders in Harpenden to choose from, based on 2,196 reviews.
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Extension Builders in Harpenden
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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 Harpenden
Member since Jul 2025
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 Harpenden
Member since May 2024
ID Checked
Our professionalism and high standards speak for themselves. Priding ourselves on attention to detail and customer service, we will stride to exceed your expectations. 30+ years' experience. Insurance work undertaken; public liability covered. A...
Based in AL5 2JN,
Harpenden
Extension Builder covering Harpenden
Member since Oct 2022
ID Checked
Father and son building company 40 years experience no job too big or small free no obligation quotes look forward to hearing from you
Based in AL5 4PA,
Harpenden
Extension Builder covering Harpenden
Member since Jan 2025
ID Checked
over 10 year experience Builder with competitive price! we do Interior desige, Extension, Renovation, Loft conversion, Landscape. Pavement, New Build
Based in AL5 4PB,
Harpenden
Extension Builder covering Harpenden
Member since Jul 2021
ID Checked
NLK Group, based in London, provides bespoke services in carpentry installation, custom-made wardrobes and cabinets, house refurbishments, and various construction projects. Our offerings include: • Kitchen fittings • Fitted wardrobes • Painting...
Latest Wooden Doors - External Review
"Naim did a fantastic job with replacing our external doors- front and rear. Communication was great and we are happy with the results."
Reviewed by Glendale on 25th Oct 2025Based in WD25 0GD,
Watford
Extension Builder covering Harpenden
Member since Nov 2016
ID Checked
A family business committed to quality, value and client satisfaction in every project. From little kitchen to big extensions
Latest Garage Conversion Review
"Great Price , great communication and completed job to high spec , very good team with him"
Reviewed by Ryan on 24th Oct 2025Based in HA7 1FP,
Stanmore
Extension Builder covering Harpenden
Member since Jan 2020
ID Checked
We are a building company that specialise in refurbishment work. Residential or Commercial works. We have been working in the industry for 30 years. We are happy to give you a quote for all types of work, with no obligation.
Latest Structural Steelwork Review
"Professional and prompt provision of written job specification and estimate. Good quality work rebuilding and repairing patio retaining wall, completed within agreed time. Would definitely use again."
Reviewed by Pam on 17th Oct 2025Based in HA6 1BG,
Northwood
Extension Builder covering Harpenden
Member since May 2025
ID Checked
We are a family ran business, that has been in operation for over 10 years. We specialise in home refurbishments, plumbing, electrical and gas heating. We are available in London, Surrey, Kent, Essex, Middlesex, Buckinghamshire, Berkshire, Hertfordsh...
Latest Solid Timber Flooring Review
"Noble builders were quick, reliable and most of all trustworthy. The work they did for me was of a high standard and at a competitive price. I would recommend these builders to anyone and would use them again."
Reviewed by Aubrey on 1st Aug 2025Based in SE28 0NP,
London
Extension Builder covering Harpenden
Member since Jul 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 Harpenden
Member since Nov 2023
ID Checked
Hi , I am working on construction from 25 years, I have a team of 5 people, all together we can perform any work in construction, is doesn’t matter if is inside or outside of the house, we a located in Hemel Hempstead.each one we have 2,3 qualificati...
Latest Bricklayer Review
"Very pleased with work"
Reviewed by Isy on 30th Jun 2025Based in HP3 8PD,
Hemel Hempstead
Extension Builder covering Harpenden
Member since Mar 2025
ID Checked
Hi we at 5 starroofinglondon are always happy to help from a guttering cleaning to a whole new roof. We offer free no obligation quotation. We have years of experience in roofing and guttering. We use only the best materials and update on the market...
Latest Roof Repair Review
"Despite the weather/rain the job was completed as promised. Really pleased with the result. Thank you"
Reviewed by Mohammed on 8th Jun 2025Based in LU1,
Luton
Extension Builder covering Harpenden
Member since Jan 2020
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 Harpenden
Member since Mar 2023
ID Checked
♻️ ADS WASTE MANAGEMENT ♻️ ADS strive to deliver very high standards to the work we provide as well as the customers satisfaction. We are very comparable with our prices. We will 100% quote match within reason. ????FACILITY MANAGEMENT ????...
Based in AL3 6EU,
St Albans
Extension Builder covering Harpenden
Member since Oct 2020
Our Customers will always come first! Prestige Renovations is a well established building company that has built up an enviable reputation in the local area. We pride ourselves on our commitment to provide a professional and speedy service at all tim...
Based in AL3 6PQ,
St Albans
Extension Builder covering Harpenden
Member since Aug 2022
ID Checked
A high class builder serving the 3 home counties specialing in extensions, renovations, loft conversions, kitchens and bathrooms, garden rooms
Based in AL5 4RA,
Harpenden
Extension Builder covering Harpenden
Member since Jan 2024
Anything regarding bulder works as assistant. I'do plaster board, roof tiles etc
Based in AL5 5FE,
Harpenden
Extension Builder covering Harpenden
Member since Jul 2025
Established general builder of 26 years, experienced in all refurbishment and extension and alteration projects. We have an eye for detail and can execute a great finish. A wealth of references are available.
Based in AL5 1EX,
Harpenden
Extension Builder covering Harpenden
Member since Oct 2023
ID Checked
We are a Hertfordshire & Bedfordshire based construction company working in the local area for over 100 years, now in our 4th generation! We undertake our own developments as well as contract work for clients. We have a diverse portfolio of completed...
Based in AL4 8EE,
Wheathampstead
Extension Builder covering Harpenden
Member since Jul 2023
ID Checked
Here at Buildabase we are the go to guys with the can do attitude. Our team of friendly professionals are here to take the stress away and make building your dream home a wonderful experience With over 30 years experience in this sector we leave no...
Based in AL3 7PT,
Redbourn
Extension Builder covering Harpenden
Member since Jul 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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