Do extension builders near me need insurance?

While it isn’t a legal requirement, most builders carry public liability insurance to cover accidental damage or injury during work. Always ask to see proof of insurance before agreeing to a project.

Do local extension builders offer guarantees on their work?

Yes, many local home extension builders in your area should provide a guarantee covering their workmanship for a set period, often lasting several months to a few years depending on the project size. Always check what the guarantee covers before work begins.

What should I ask before hiring an extension builder?

Ask about previous work, project timelines, cost estimates, and payment terms. It’s also wise to discuss materials, planning permissions, and how any unforeseen issues will be handled. You can easily view examples of previous projects of extension builders near you on MyBuilder.

How much deposit should I pay for an extension project?

Deposits usually range from 10% to 20% of the total cost. Make sure the payment schedule, scope of work, and conditions are clearly written into a contract before the extension project starts.

Local Extension Builders: Find Extension Builders Near Me

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (290 reviews)

Some of our top rated extension builders

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Priority Carpentry and Building
Rating: 5 out of 5
An established business offering all aspects of carpentry & general maintenance in the Cardiff and South Wales area we are a professional,reliable and friendly service. All of our work is carried out to the highest standard by fully qualified carpenters and builders and all work is fully guaranteed.
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Latest review:
Carpentry- 25 Mar 2018
Job was to replace bowing joists and level ceiling, responded very quick and would defiantly hire again
George James construction ltd
Rating: 5 out of 5
We are new to my builder as we look to grow our current client base. Please don't let our lack of feedback put you off. We have many happy previous clients and would actively encourage you to personally come and see some of our previous work,from 90m2 extensions down to simple patios and everything in-between. We pride ourselves on our punctuality and honest approach to our work.We are fully qualified and insured, based in Wantage, Oxfordshire.
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Restoration & Refurbishment- 3 Aug 2019
George, James and all their colleagues have been incredibly professional, efficient, honest and helpful over the last few weeks of renovation work on my old house that was falling apart in places. They worked on replacing all my windows, front door and French doors, as well as painting most of the house, and I couldn't be happier with all that they've done. Everything is finished to impeccable standards, I couldn't have asked for better. They were also very understanding when I had a strange request for one of the windows, and they made it happen, I got exactly what I wanted. They were very generous with regard to giving me free advice about what to do/not to do when I got the survey for the house, thereby saving me a lot on costs, for which I am very grateful. The whole team was also very understanding when I had to delay the work, and they really helped me out a lot by trying to accommodate my schedule despite their own very busy schedule. The house was in a chaotic state but they put up with it, and were very patient and kind about everything throughout the process. I couldn't have worked with a more pleasant and professional team. The house is looking great because of what they have accomplished. Given the high standards they work to, I am having them come back to do my roof in a month. I wouldn't hesitate to recommend George, James and their whole team to anyone looking for the best professionals who will treat their client's house with the greatest care and respect.
Scott Building & Landscaping
Rating: 4.2 out of 5
I have been in the building trade for 20years we undertake all groundworks & building work from gardens to new build houses.
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Groundwork & Foundations- 8 Oct 2025
Wayne arrived when he said he would, did the job and left everything perfect after groundworks. Much appreciated, highly recommend.
James Thomas Limited
Rating: 5 out of 5
We are a Registered Limited Company and have been trading since 2000, We carry out all aspects of domestic and commercial building and maintenance. We are specialists in providing house renovations, extensions, electrical and plumbing, plastering, dry walling, damp proofing, joinery, rendering requirements. We also offer a fully insured 24/7 plumbing service. Free no obligation quotation and advice!
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Latest review:
Plastering- 9 Nov 2017
He was on time and very polite. Made an amazing job of the plastering, so hard working it took some convincing to get him to stop for a cup of tea. Will definitely be hiring again when we get to the next room to be done.
Builder
Rating: 4.3 out of 5
Good skim 1 years experience Good fencer 2 years experience Good paint
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Latest review:
I am happy with how Saab did my job. He’s professional, he finished the job and am happy to pay him. He is the third worker I called from my builder but he’s the only one that finished my job and did it well. Thank you Saab
Hertfordshire Brickwork Limited
Rating: 5 out of 5
Hertfordshire Brickwork Limited., where quality comes first and competitively priced, too. 21 years experience constantly in that field of work. I pride myself on the outstanding quality and the great customer service I provide - that's a promise. It's one of many things I've been extremely proud of throughout my career. I also hold the highly recognised SMSTS Site Management Safety Training Scheme certificate so you can be sure everything will be well planned out safely and correctly. Kind regards, Danny Marsh
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Latest review:
Bricklaying- 14 Mar 2016
He completed the job - really impressed - Very Polite - he worked really hard and made a fantastic path for us. Highly recommend this guy.
Bespoke Craftsmen Ltd
Rating: 5 out of 5
Bespoke craftsmen is company that focuses on quality on all jobs from bespoke furniture to garden rooms extensions lofts conversions and so on. I have 10 years carpenter joiner experience. I have carried out big jobs from extensions barn conversions and newbuild houses while being working site foreman. I also specialise in very detailed work where attention to detail is a must for example high end built in wardrobes for well known customers.
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Latest review:
Carpentry- 9 Aug 2019
Excellent Tradesman who takes pride in his work. Reliable, always turned up on time. We have just recently moved to the area, so was great to meet and know a good carpenter. Cameron was friendly and courteous. And cleaned up after each day. Couldn't recommend him enough. Also value for money. Mr and Mrs Dillistone.
Falcon Windows and Property Maintenance
Rating: 5 out of 5
Highly experienced with industry approved accreditations including FENSA, Guild of Master Craftsman. Capable of dealing with small jobs to full builds. Particularly focused at offering a total solution. 48 years experience in all work I am Reliable, trustworthy, hardworking and very focused.
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Latest review:
Windows & Doors (uPVC & Metal)- 11 Mar 2016
excellent job very professional, came at a time that suited me. great job will use again.
VolodymyrBuild
Rating: 4.7 out of 5
We are small building company,a group of employee 18 skilled people. All our team are fully qualified. We do fully refurbishment,kitchen and bathroom installation, gas, heating and electrical works,plumbing,tiling,carpentry,flooring.We try to do the high quality jobs for clients to be happy and to use us again. We are over 11 years in building industry. We cover all London area.
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Latest review:
Extensions- 16 Oct 2019
Not trust worthy, does not follow the contract, he pulled out in middle of my work in house three times. Never finished on time. Promised to come back and finish The fence and the toilet never come back despite numerous phone calls. I have leaking toilets in the wall big pigments of dampness on the wall paper on the wall adjacent to toilet. Promise to do the roof tiles then he said I cannot do it. Fitted the kitchen units wrong and did not connect the sink overflow pipe to the macerate ( leaking water under sink. Flooring tiles not even still have prominent corners . Front driveway is cracked as he promised to dig and put concrete but last minute changed his mind and put only cement and new slaps. Water pipe outside house is leaking . The stairs carpet and the wooden stairs not painted rightly and the carpet is not fixed right it is out. I paid him all the money left only 150 pounds but never come back to paint fence, summer house finishing and loft ladder. Brought materials and his workers and brought bills never saw some of it. Taken some materials in his van and never discussed this issue. Work meant 6 weeks and now 8 months and still not finished. Do not hire him he and his workers are not up to standards. Will love one from builder. Com come and see the unfinished and damaged in my house.
Treewood Ltd
Rating: 5 out of 5
Welcome to Treewood Ltd. Treewood Ltd offers professional and wide range of construction services; conversions, extensions, decorating, bespoke furniture, flooring, metalwork and many more. Our mission is to deliver high quality services to everyone who is passionate about our innovative options of designing styles also add the value to people lifestyles through following individual preferences, making certain that customers receive what they expect.
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Latest review:
Hard Flooring- 2 Apr 2019
We are thrilled with our new floor! I’m so pleased we went with Treewood to lay parquet flooring in our downstairs lounge. Andrew has done the most amazing work and his attention to detail is fantastic. We moved out of the house while the work was going on as we have a baby, and Andrew kept us to up date each day with his progress and he even sent pictures. I would highly recommend Treewood to anyone needing new flooring at exceptional quality! Carly
REA Construction LTD
Rating: 5 out of 5
The company’s success is built on the strong belief of quality work, attention to detail and on-time completion. Rea Construction Ltd has an in house team of builders, architects, and interior designers with all the relevant skills and qualifications which enable us to offer a fully comprehensive design and build service. Get in touch today for a free on site consultation.
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Latest review:
Extensions- 8 Dec 2017
We couldn’t be happier with the professionalism and quality of workmanship from REA Construction. The project was delivered within budget and on time. We lived in the property during the work and we, our neighbours and the site were always treated with the utmost consideration. There were almost no hitches and, when they did occur, they were dealt with immediately and thoroughly. Our project team, led by Kristjan and Besi, were universally hardworking, organised and produced work to an excellent standard. Communication is great, the people are wonderful. Renato was someone I felt I could trust from the moment I met him and he never let us down. He and everyone at REA genuinely care about what they do and that their customers have a happy experience. We certainly did and would have no hesitation recommending them to others.
Primus Energy Ltd
Rating: 4.3 out of 5
Primus Energy serve North West England and North Wales - with a combined experience of over 60 years in fitting and repairing boilers, general plumbing, decorating and building works. An individual project manager will be assigned to make sure your works are done smoothly and to your satisfaction.
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Latest review:
Carpentry- 3 Aug 2024
Peter completed my job to a high standard. He quickly came out to quote up the job and I booked in with him within a couple of days. He was super helpful with offering advice as well as collecting the materials required for the job. Really happy with the work he did and would use again for future jobs.
Barton Property Services
Rating: 5 out of 5
Barton Property Services are a hard working, friendly and honest family run business. Providing great service with quality workmanship for all your property needs. From Extensions, renovations, kitchen and bathroom installs, to changing a tap. The quality of service, and attention to detail remains the same with the clients wishes always at the forefront of amy project.
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Latest review:
Kitchen Fitting- 29 Sep 2018
Was a bigger job than we expected and ran over slightly but the work done was all to a brilliant standard. Definitely asking Gareth next time I need a job doing. Even saved money where he could. Brilliant.
Utopian Garden Rooms
Rating: 4.3 out of 5
We are bespoke design and build service. We undertake all aspects of building and design. Fire doors, extensions, loft conversions, kitchens, cut and trussed roofs etc etc! Please get in contact for a quote 😊
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Latest review:
Carpentry- 22 Jan 2026
A good carpenter, I paid him for the first week he then didn't turn up and finish the job leaving in a mess with the customer
Gary shaw builder
Rating: 5 out of 5
Hi there , both me and my son are time served carpenters.we both class ourselves as multi trades tho as over the years we have picked up other trades . We like to stay on site all the time till contract is complete.
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Latest review:
The project involved renovating my end terrace house, there was brick work to the fire chimney breast, which is fabulous and everyone comments on how eye catching it is. There was plastering throughout with new doors architraves and skirting boards with new wood flooring through entire downstairs. Gary also redesigned and fitted new kitchen and bathroom he carried out the first fix electrical work. Gary was thoughtful and knowledgeable in the planning stages and resourceful during the project. He carried out the work to an exceptionally high standard with an excellent finish which far exceeded my expectations. Gary completed the work on the agreed time and on budget. Gary has an excellent manner with people and is trustworthy I felt comfortable to have him work in the house. His further strengths are the price and the fact that he tidied up every night.
DAB HAND
Rating: 5 out of 5
We are small business, and can always offer competitive quotes. Every quote will include pricing for fully qualified sub contractors to ensure the best results. No job too big or small.
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Latest review:
Carpentry- 20 Feb 2018
A very professional job, clean and tidy tradesman very polite,nothing to much trouble. Would recommend to family and friends.