Builders
Carpenters
Electricians
Flooring Specialists
Gardeners
Handymen
Heating Engineers
Painters & Decorators
Plasterers & Renderers
Plumbers
Roofers
Tilers
my
How it works
Ask a trade
Cost guides
Categories
Find an Extension Builder in St Albans
Find a local extension builder near you. We have 8,736 trusted and reviewed extension builders in St Albans to choose from, based on 3,866 reviews.
POST YOUR JOB
Tell us about the work you need doing around your home.
RECEIVE UP TO 3 QUOTES
Up to 3 Extension Builders in St Albans will then be in touch to quote for the work.
CHOOSE YOUR EXTENSION BUILDER
Compare quotes then choose your preferred St Albans Extension Builder.
Extension Builders in St Albans
Filter by:
- Within 60 minutes
- Within 45 minutes
- Within 30 minutes
- Within 20 minutes
- Within 10 minutes
- Any rating
- 5 star rating
- 4 star rating
- 3 star rating
Sort by:
- Recommended
- Closest
- Most reviews
- Highest rating
Established over 20 years ago, we cover all areas of building work, including new builds, extensions, conversions, refurbishments and renovations. We can also help you get the most out of your home by upgrading your space to the latest bathroom or ki...
Latest Bathroom, Kitchen and WC Plumbing Review
"Vito has been brilliant from start to finish. He was the only company who actually came out, measured properly, and gave us a quotation that was clear, detailed, and completely reasonable. He and his crew arrived on time every si..."
Reviewed by Sue on 5th Aug 2026Based in AL3 6HR,
St Albans
Extension Builder covering St Albans
Member since Nov 2023
ID Checked
Established builder for over 30 years extensions new builds and renovations delivering value for money and completing on time and on budget to an excellent standard
Latest General Maintenance Review
"JPD Build and Design presents themselves as an efficient and professional company. The quote was very reasonable but sadly too good to be true. The original time frame was 3 weeks but after 9 weeks of excuses, poor communica..."
Reviewed by Lara on 1st Jul 2026Based in AL3 4LZ,
St Albans
Extension Builder covering St Albans
Member since Jun 2026
ID Checked
Best work guarantee take pride in all work weather big or small we offer too work with clients too find best way forward
Latest General Maintenance Review
"Terry is a really good guy and really good to work with. Him and his team are very friendly, knowledgeable and efficient. Wouldn’t hesitate in recommending Terry and the team to anyone with an upcoming project"
Reviewed by Andreas on 31st Aug 2026Based in HA4 7AA,
Ruislip
Extension Builder covering St Albans
Member since Jun 2025
ID Checked
Over 25 years' experience in all aspects of building, roofing, plastering, and renovations. Also experienced restoration of listed buildings. Based in Cambridge and surrounding areas - available for free quotations at competitive prices. Friendly...
Latest Damp Proofing Review
"Professional workmanship, did a great job, good price, very happy with the final result."
Reviewed by Pamela on 19th Jun 2026Based in HP1 1TB,
Hemel Hempstead
Extension Builder covering St Albans
Member since May 2026
ID Checked
Building contractors based in St Albans. 25 years in business working on small bathroom refurbishments , kitchens, extensions, and new build properties.
Based in AL1 3JJ,
St Albans
Extension Builder covering St Albans
Member since Aug 2024
General builder based in St Albans Covering all types of external works Drive ways Fencing Patios Pressure washing Extensions Brick and block work
Based in AL1 3UE,
St Albans
Extension Builder covering St Albans
Member since Jul 2026
ID Checked
Me and my team are specialist in any building jobs , painting, plumbing and electrical work.
Based in AL1 4JL,
St Albans
Extension Builder covering St Albans
Member since Jul 2025
Build With Confidence. Build With Us. TrustCarpentry Ltd Services for Homes & Businesses Looking for a reliable construction company to bring your project to life? We specialize in residential builds, commercial developments, renovations, and c...
Based in AL1 1AJ,
Saint Albans
Extension Builder covering St Albans
Member since Oct 2025
We are a professional building company providing services in home designs, ranging from kitchens and bathrooms to complete home refurbishments. Having over 20 years of experience in the industry, we will always guarantee the highest quality job to sa...
Latest uPVC Windows & Door Review
"A&I Builders were the perfect choice for our project, and I couldn't be happier with the result. What began as a relatively small kitchen reconfiguration eventually evolved into a complete refurbishment, including structural alte..."
Reviewed by Chris on 25th Oct 2026Based in EN2 7EL,
Enfield
Extension Builder covering St Albans
Member since May 2019
ID Checked
We are a family run business that takes great pride in our work for more info you can find us on Google J Brock building and roofing .
Latest Internal Walls Review
"J.Brock was extremely professional during the process of carrying out the repairs. The price was very reasonable and I found that the company was very flexible to accomodate all parties. The work was completed to a very high stand..."
Reviewed by Fernando on 22nd Oct 2026Based in HP2 5EP,
Hemel Hempstead
Extension Builder covering St Albans
Member since May 2019
ID Checked
General builder with 40 years experience all types of building work undertaken Brickwork paving patios fencing
Latest Builder Review
"We had our garden done in July this year and absolutely love it! ❤️ We now have a beautiful new patio, artificial grass and a lovely big space that we can really enjoy as a family. It has completely transformed the garden, and we..."
Reviewed by Carly on 16th Oct 2026Based in SG12 9PH,
Ware
Extension Builder covering St Albans
Member since Aug 2026
ID Checked
Experienced builder and bricklayer providing high-quality residential and commercial construction services. Specialising in house extensions, renovations, brick and blockwork, garden walls, foundations, structural alterations, repointing, and general...
Latest Internal Walls Review
"very good job done, efficient and got everything done that I asked for which was removing plasterboard wall over a fireplace and alcoves"
Reviewed by Katy on 11th Oct 2026Based in NW10 0LL,
London
Extension Builder covering St Albans
Member since Jun 2026
ID Checked
Based in London - Cover all surrounding areas. We specialise in all aspects of groundworks - All work guaranteed with over 25 years experience! We also offer 1 years contact support and indemnity for the job we completed !So you wont be left high...
Latest Concrete Base Review
"Danny arrived a day early than initially scheduled but checked in beforehand to confirm it was okay to do so. He worked cleanly, tidying up after he had finished. Very polite and personable. I’d definitely and would be using again..."
Reviewed by Leslie on 9th Oct 2026Based in E4 7FG,
London
Extension Builder covering St Albans
Member since Sep 2026
ID Checked
We are a family business working from small to big projects loft, extension, garden all work from A to Z established in 2019 and all ours employees are having over 20 years experience Let's Work Together!
Latest Internal Renovation / Reconfiguration Review
"We couldn’t be happier with the service we received from this company. From start to finish, the whole process was excellent. The team were professional, reliable, friendly and took great care to ensure everything was completed to..."
Reviewed by Scott on 30th Sep 2026Based in HA5 2QH,
Pinner
Extension Builder covering St Albans
Member since Jan 2026
ID Checked
High quality refurbishment , kitchen and loft extensions, painting and decoration and any other building requirements.
Latest Internal Rendering Review
"Really nice bloke, worked efficiently but to a very high standard. Would definitely recommend"
Reviewed by James on 18th Sep 2026Based in AL9 7TT,
Brookmans Park
Extension Builder covering St Albans
Member since Aug 2026
ID Checked
BuildCraft innovation is a reliable, London-based building company specialising in renovations, new builds, porches, extensions, loft conversions, plumbing, electrical work, luxury bathrooms, outbuildings, garden & landscaping, and driveways etc. W...
Latest Extension Review
"He has been excellent; his honesty and reasonableness have been apparent since our initial interaction. When he provided the estimate, his approach was notably distinct from that of other contractors.He was very detailed and thoro..."
Reviewed by Sanjeev on 8th Sep 2026Based in TW15 1LD,
Ashford
Extension Builder covering St Albans
Member since Oct 2023
Public liability insurance
At AP Brickwork and Development Ltd, we specialise in high-quality bricklaying, structural work, and property development across residential and commercial sectors. With over a decade of hands-on experience, we’re known for our craftsmanship, reliabi...
Latest Chimney Building / Repair Review
"Really nice team and professional work. They really know what they are doing and were hard working. We will definitely be using them again."
Reviewed by Alexandra on 9th Aug 2026Based in WD24 6AB,
Watford
Extension Builder covering St Albans
Member since Apr 2024
ID Checked
Homes Construction & Renovations Design. Build. Transform. www.homeconstructionrenovations.com Since 2020, Delivering exceptional craftsmanship & innovative solutions across London and surrounding areas up to 50 miles. We specialise in loft convers...
Latest Builder Review
"We recently had our property refurbished by Home Constructions and Renovation, and we couldn’t be happier with the results. From start to finish, the team was professional, reliable, and highly skilled. Their attention to detail a..."
Reviewed by Zolo Solo on 30th Jul 2026Based in UB7 0HR,
Sipson
Extension Builder covering St Albans
Member since Feb 2026
ID Checked
M&A Sakhi construction Ltd provides an array of top-quality home improvement services, including professional loft , extension, garage, driveway , painting and decorating, tiling, flooring, bathroom, kitchen and complete home refurbishments. We h...
Latest Loft Conversion Review
"I recently had the pleasure working with M&A Sakhi Construction. Upon the initial enquiry to completion, Narinder Bhaji and the whole team have been great. Hardworking and professional. I had various jobs done on my house, brickwo..."
Reviewed by Mohammed on 24th Jul 2026Based in UB3 4AD,
Hayes
Extension Builder covering St Albans
Member since Jan 2024
Public liability insurance
We are a team of experienced builders with over 20 years in the construction industry, providing reliable and professional general building services. Over the years, we have built a strong reputation for delivering high-quality workmanship, attention...
Latest Brick / Block Paving Review
"Absolutely fantastic builders-a great team! They are very decent guys, honest, hardworking, and just good people. Vincenzo and Francesco demolished our old garden shed and concrete base, and constructed a new, larger base ready f..."
Reviewed by Poly on 18th Jul 2026Based in EN11 9BE,
Hoddesdon
Extension Builder covering St Albans
Member since Jun 2023
ID Checked
TOWNS NEAR ST ALBANS
- Extension Builders in Park Street
- Extension Builders in How Wood
- Extension Builders in Colney Heath
- Extension Builders in Redbourn
- Extension Builders in Harpenden
- Extension Builders in Wheathampstead
- Extension Builders in Radlett
- Extension Builders in Shenley
- Extension Builders in Welham Green
- Extension Builders in Hemel Hempstead
- Extension Builders in Brookmans Park
- Extension Builders in Welwyn Garden City
- Extension Builders in Borehamwood
- Extension Builders in Watford
- Extension Builders in Potters Bar
- Extension Builders in Welwyn
- Extension Builders in Bushey
- Extension Builders in Elstree
- Extension Builders in Markyate
- Extension Builders in Potten End
Other trades
- Bathroom Specialists
- Bricklayers
- Builders
- Carpet Layers
- Chimney Builders
- Cleaners
- Door Fitters
- Driveway Specialists
- Electricians
- Extension Builders
- Fascias Specialists
- Flat Pack Assemblers
- Flat Roofers
- Flooring Specialists
- Garage Convertors
- Garden Clearance Specialists
- Garden Maintainers
- Garden Shed Builders
- Gardeners
- Gas Boiler Engineers
- Gas Fire Engineers
- Gas Oven & Hob Engineers
- Guttering Specialists
- Handymen
- Hard Landscapers
- Heating Engineers
- Internal Renovators
- Joiners
- Kitchen Fitters
- Laminate Flooring Specialists
- Lawn Turfers
- Locksmiths
- Loft Specialists
- Outbuilding Construction Specialists
- Painters & Decorators
- Pebble Dashers
- Plasterers
- Plumbers
- Porch Builders
- Radiator Engineers
- Roofers
- Shower Specialists
- Staircase Specialists
- Tarmac Driveway Contractors
- Tilers
- Tree Surgeons
- Underpinning Specialists
- Window Specialists
- Wooden Decking Installers
- Wooden Fence Specialists
See more trades
Our Reviews
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.
To understand more about our reviews process, please visit our Reviews Policy.
Find Extension Builders Near You
Trusted Extension Builders in other locations
- Extension Builders in Abridge
- Extension Builders in Addlestone
- Extension Builders in Amersham
- Extension Builders in Ampthill
- Extension Builders in Arlesey
- Extension Builders in Ashford
- Extension Builders in Aston Clinton
- Extension Builders in Aylesbury
- Extension Builders in Baker's Wood
- Extension Builders in Baldock
- Extension Builders in Barton-le-Clay
- Extension Builders in Bassingbourn
- Extension Builders in Beaconsfield
- Extension Builders in Berkhamsted
- Extension Builders in Biggleswade
Recently posted Extension Builders jobs
Join over 1,000,000 happy homeowners who have posted their job on MyJobQuote.
Are you a trade? Become a member and get access to local jobs today!
See demand near you
Recent Extension Builder Articles
Over 1 million homeowners and over 50,000 tradespeople
use MyJobQuote nationwide each year