How it works
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Post a job
Tell us about your job, and we'll alert suitable extension builders in UK. It’s simple and free.
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Tradespeople respond
Once your job is posted, you'll get responses from interested extension builders through the website.
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Review and choose
Browse profiles, work history, and feedback, then choose who you wish to share your details with.
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UNIQUE REFURBISHMENTS
221 reviews • 100% positive ratingExtension Builder based in RomfordTrade Member since 2009Unique refurbishments provides a full building service. We are fully qualified tradesman We are a team well more like a family to be honest. We all have a roles in the team and everyone is 100% all the time. We pride ourselves in being the best at what we do Also a read more
Latest Extensions feedback review:
Double story extension
Lewis, Dave, Tari, Digger and Sonny - The team was brilliant. They built a double story side extension on the side of the house and fitted the kitchen. Excellent workmanship by all of the team involved at all times. Throughout the whole...
By amardeep96968 on 19th May, 2023
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rcm carpentry
130 reviews • 99% positive ratingExtension Builder based in SeafordTrade Member since 2010We have a fully skilled team of guys who always strive to go the extra mile. Having been in Mybuilder for all these years I was one of the first to start my positive feedback. We pride ourselves on taking on one job at a time and fully concentrating on that job, not read more
Latest Loft Conversions feedback review:
Convert loft into bedroom and ensuite
Rae and his team have been exceptional in completing our attic conversion. The lads are always polite, tidy and happy and the job was completed on time and in budget. This is the second time I have used RCM for a large building project and...
By lorraine_170 on 20th Oct, 2023
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Build It Developments Ltd
33 reviews • 100% positive ratingExtension Builder based in BasingstokeTrade Member since 2011We build homes,extend homes, alter homes, convert lofts & refurbish. read more
Latest Extensions feedback review:
Large extension and renov of detached family home.
We were so fortunate that Gary found us through MyBuilder. Gary and the BuildIt team made the biggest, scariest project of our lives a thoroughly enjoyable and fun process. Considering the scale of the project (a back-to-brick renovation,...
By matt93968 on 8th Jan, 2021
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PJL Building Works
111 reviews • 99% positive ratingExtension Builder based in LiverpoolTrade Member since 2016Hello I'm Paul. Thanks for reading my profile, I have 20 years experience in building With vast experience in most trades, My line of work is Domestic and Commercial extensions, Garden walls, Structural alterations, New builds Outbuildings, Conservatory read more
Latest Extensions feedback review:
Single Storey Rear Extension Quotes Required
In a nutshell, we would hire Paul again in a heartbeat. We had spent some time contacting builders for quotes. Several did not call when they said, let us down or came in with very high quotes. A couple were possibilities but it felt very...
By emma29671_64 on 21st Feb, 2024
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Yarm Architectural Design & Structural Engineering Services
350 reviews • 98% positive ratingExtension Builder based in Stockton On TeesTrade Member since 2016Founded in 1999 Yarm Architectural Design are an ambitious design led practice with a very strong knowledge of construction, we have close relationships with good tradesmen. We combine creativity, with hard work and a professional approach. Our ethos remains the same no read more
Latest CAD/Drawings feedback review:
Elevation and floor plan required
Absolutely amazing service! Jason produced our plans in super quick time and even took over as agent for our planning application. Will be using again for our building reg plans. Thank you so much.
By nicky22925 on 19th Feb, 2024
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William Bennett Construction Limited
95 reviews • 98% positive ratingExtension Builder based in MansfieldTrade Member since 2012A family owned business with over 40 yrs experience. Specialising in all types of projects including extensions, new builds, bi-fold doors, replacement doors and windows and RSJs. We also complete external works, block paving and patios, landscaping and external rendering. read more
Latest Extensions feedback review:
Kitchen living room extension
Starting out I was very nervous about finding a company that would do the job we wanted and do it well, and I found them. We had a rear extension built to such a high standard and it was completed in just over 3 months with was brilliant....
By natalie52833 on 27th Nov, 2022
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RW Building Services
38 reviews • 100% positive ratingExtension Builder based in CranleighTrade Member since 2009We provide a comprehensive specification and quotation for all our clients without obligation. Please look no further and be our client today and forever. read more
Latest Extensions feedback review:
Steelwork - full installation - dorking
Professional and efficient - Super happy with the service! Rod and his team installed steels for a new extension. The job was done on time and on budget and they really cared to make sure the job was finished to an excellent standard....
By lucy12216 on 13th Nov, 2023
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M.T.S Builders
31 reviews • 100% positive ratingExtension Builder based in WarminsterTrade Member since 2009MTS Builders Limited is an established and competitive building and construction company based in Wiltshire. Our portfolio includes the construction of extensions and alterations for domestic premises for various clients and architects throughout Wiltshire and Somerset. read more
Latest Extensions feedback review:
Kitchen extension
We are really pleased with the work completed by Martin’s team. Martin project managed the build very efficiently and we were kept up to date at all times. We would highly recommend MTS builders. A very friendly bunch who completed the...
By lucyyoung on 19th Jul, 2022
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Focus Builders
19 reviews • 100% positive ratingExtension Builder based in BoltonTrade Member since 2017EXTENSION SPECIALISTS: Please allow me the time to introduce Focus Builders the North West’s leading Extension/Permitted Development Specialists with over 35 Years experience in Domestic House Extensions. Our complete Design and Build package takes all the stress read more
Latest Extensions feedback review:
House extension
We contacted Sean through this site. Initially we spoke to him via telephone and arranged an appointment for him to come and discuss work we wanted carrying out. He came as arranged, was professional, knowledgeable and was genuine. Using...
By jessica55253 on 31st Aug, 2022
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LNB Building Solutions Ltd
57 reviews • 100% positive ratingExtension Builder based in BrentfordTrade Member since 2014We are specialise in all types of new builds from large extensions to loft conversions or building a new house with complete planning services with structure drawings and designing interior as well.We are members of federation of Masters Builders. First time buyers with read more
Latest Bathroom Fitting feedback review:
Replace shower cubicle in ensuite
We originally asked LNB to quote on just replacing our shower, after some discussion we agreed it would be better to refurb the whole ensuite. Price was agreed and the guys started, they took everything out of the bathroom then gave us some...
By robmeyer on 29th Nov, 2023
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ABC Construction (SCOTLAND) Ltd
31 reviews • 100% positive ratingExtension Builder based in GlasgowTrade Member since 2009As an experienced Structural Engineer with the team of great builders (including joiners, roofers, plumbers, decorators etc.) I provide my clients with the Design and Build service. read more
Latest Loft Conversions feedback review:
Loft conversion and period house refurbishment
Work is well underway for the job posted and looks to be completed on time on budget and to a very high standard. Further comment will be made at completion stage.
By anon-221204001502521600 on 12th Nov, 2016
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Ava Constructions & Decors Ltd
31 reviews • 100% positive ratingExtension Builder based in HayesTrade Member since 2014Ava Constructions & Decors strive to offer bespoke service in building.We Offer Project Management and ready to provide quality service.In these years I learned to respect customers requirements and to apply them in accordance with the Building Regulation.Punctuality and read more
Latest Extensions feedback review:
Kitchen Extension and Dining Room Refurbishment
Hi hired Ava Constructions to complete my 4m rear extension with internal works. I am very satisfied with the work Deep and the team have done on my property. Communications were always open and honest and the work was done to the...
By tigzor on 10th Jul, 2023
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Jw carpentry and build
17 reviews • 100% positive ratingExtension Builder based in BristolTrade Member since 2019Hello, my name is Jason, been in the building trade for 29 years, We have a great team behind us to deliver your building projects. read more
Latest Extensions feedback review:
2nd Story extenstion
Jason and team are friendly and knowledgeable. I was very impressed that the project stayed on budget with no deviation from the quote, and we even had some extras thrown in. Timescales were longer than we expected, and there are times we...
By ian95460 on 8th Aug, 2023
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CSN building contractors
17 reviews • 100% positive ratingExtension Builder based in LeedsTrade Member since 2014Hi I'm Chris, CSN is based in the Temple Newsam area of Leeds , we are extension specialist with a 5 star rating, all our work is available to view and also speak to our happy customers, if you want the job doing properly and the price to be competitive then please give us read more
Latest Extensions feedback review:
Kitchen extension and fit-out
Our decision to go with Chris's CSN Building Contractors proved to be good one. We've ended up with the extension we wanted at a decent price and completed in an acceptable timescale. Chris's tradespeople were a hard working bunch and the...
By braemarstan on 15th Mar, 2021
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Beech Hill Installations ltd
40 reviews • 93% positive ratingExtension Builder based in MansfieldTrade Member since 2009Welcome to Beech hill installations ltd ,We are a small friendly company with a very big reputation.We offer a service from design to completion with years of experience we should be your contractor of choice. We look forward to hearing from you and helping you complete your read more
Latest Tiling feedback review:
Experienced tiler required
I chose Ricky to do a large tiling job within a residential house because he provided the most reasonable quote and honest advice, and I'm glad I did because he has completed the job to a high standard and the clients are extremely pleased...
By luke_travers on 7th Jun, 2018
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282 building solutions Ltd
32 reviews • 97% positive ratingExtension Builder based in ChoppingtonTrade Member since 2014Hi its Graeme here, Welcome to my profile. 282 building solutions Ltd is a run family business its our aim to give a smooth and stress free build. I'm a joiner by trade and have worked in the building industry for over 30 years I cover all areas of building work, read more
Latest Extensions feedback review:
Rear kitchen/dining room extension to 1950s bungalow
Graeme was recommended and he didn’t let us down. We were wanting a rear dining kitchen extension and prior to plans, Graeme made some suggestions and recommendations, which we gratefully took onboard. In addition, we wanted a new roof,...
By john17_32 on 25th Apr, 2023
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Brits Contruction Services LTD
20 reviews • 100% positive ratingExtension Builder based in HarrowTrade Member since 2016Brits has vast knowledge & experience of residential projects and has built several Modern Loft conversions, Major Side & Rear Extensions and whole house Internal Refurbishments. We Offer; Project Management. Program of works. Regular Meetings with the client. Liaise read more
Latest Extensions feedback review:
Kitchen extension & floor refurbishments
We have decided to contract with Brits construction for our kitchen extension and ground floor refurbishment. It was our first experience with a builder. The whole project took roughly 6months due to few challenges. As we understand, our...
By lamiaa on 20th Dec, 2023
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Extension Kings Ltd
90 reviews • 100% positive ratingExtension Builder based in HollowayTrade Member since 2017I've been working in building trade for over 20 years , I can undertake any job small and big from foundations to the roof and anything between. I can provide any references and I have insurance of £5 million. Me and my team take pride at what we do and we do it first read more
Latest Conversions - General feedback review:
Demolish under stair wall and door, rewire television
Very responsive and helpful, did the job super quickly and exactly what was asked. Thank you!
By adelinekb on 15th Jan, 2024
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JNR Building Ltd
69 reviews • 100% positive ratingExtension Builder based in NorwichTrade Member since 2008Julian has worked for big contractors as well as small builders in his local area and has been running his own business for the last 15 years. Although Julian's main trade is brickwork, he has a fully qualified team which can cope with all jobs big and small, whom you read more
Latest Conversions - General feedback review:
Garage conversion
First class job! Worked to the price and time promised at the start. Very personable and available at anytime if I had any questions. Had a highly skilled team of tradesman, that came and went when required. The end result, we are really...
By rblackwell on 26th Jul, 2023
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v. ghinda
42 reviews • 98% positive ratingExtension Builder based in BelvedereTrade Member since 2012Established 12 years ago we are a professional team specialised in Construction as Extension, Loft Conversion, Painting and Decorations, Carpentry and Joinery, Kitchen Fittings, Bathrooms, Flooring, Plastering, Underfloor Heatings, Electricity 6 years registration with read more
Latest Restoration & Refurbishment feedback review:
Stable Block Refurbishment
Vasile did a great job. His experience, advice and quality workmanship means I’d recommend him without any hesitation. I will definitely use him again!
By darrenroos on 28th Jun, 2023
What can extension builders do?
MyBuilder is the simplest way to find a reviewed and vetted extension in your local area. We can connect you with local extension builders near you, so you can choose the ideal tradesperson for your project with confidence.
Whether your plans are big or small, we can help you find a skilled extension builder to support you with your job. Your contact details are only shared with tradespeople you want to speak to, so you can check out their credentials, read honest customer reviews and get free quotes to compare.
There are lots of jobs that extension builders can help with, including:
- Extending your home with an extra room
- Two+ storey extensions
- Adding partition walls to create more rooms
- Building annexes or external structures
Top Extension Builder Reviews
Extension Builders working in the UK have an average review score of 97% positive based on 155,915 homeowner reviews.
UK Countries
Top locations in UK
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- Derby
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- Coventry
- Stoke On Trent
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Ask an Extension Builder
Our vetted professionals answer your home improvement questions
- Builder not turning up
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