Extension Builders in Swansea | MyBuilder

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Some of our top rated extension builders in Swansea

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Martin Lewis Builders Ltd
Rating: 5 out of 5
Extension Builder in Swansea
We have built our business on a clear promise of supreme customer service & quality workmanship.We undertake all aspects of Construction and ground works and complete work to the highest standards possible within budget and to agreed timescales. Highly experienced with over 20yrs experience, we are able to offer the complete building service. . We guarantee supreme personal service based on skill, expertise and experience, coupled with our professional, friendly and efficient demeanour.
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Latest review:
Bricklaying- 30 Mar 2018
We are really happy with the job Martin and his boys have done. The quality of the work is very good, they were punctual and polite - I'd have no hesitation in using them again in future and also recommending them.
NJD Plastering & Building
Rating: 5 out of 5
Extension Builder in Swansea
I've been Plastering since I was 16, so 30+ years experience. I have been self employed for the duration of my working life, and have acquired many more trade skills as I have gone along so will consider any job.
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Latest review:
Plastering- 5 Nov 2025
Promptly turned up to view the job and was really sympathetic to my concerns around damp. After investigation by Neil he assured me it was not damp just mould and that a dry air fan would prevent any sign of it returning. What a relief! So on with the plastering which is all nearly done now and dry air fan being fitted next week. Thoroughly recommend Neil he knows exactly what he's doing 👏
JDD Builders Limited
Rating: 5 out of 5
Extension Builder in Swansea
JDL Building Ltd is a family run business based in sketty Swansea we have over 30 years combined experience covering all aspects of building work, we are hard working with high standards & quality service with great customer communication
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Latest review:
Extensions- 25 Jul 2021
We had this done in 2018, it’s amazing! The team were great and the job has transformed our living space with immediate access to the garden.
Ideal works ltd
Rating: 5 out of 5
Extension Builder in Swansea
Ideal works is a family run company. We specialise in extensions and renovation projects from start to completion ,providing a quality service and finish. We have a long list of satisfied customers that have recommended us to family and friends.
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Latest review:
Extensions- 10 May 2018
He completed a 1st class job, friendly workers, approachable, clean and tidy. Neighbours full of praise, they were impressed with their work and how polite they were. Have recommended them to others. I was more than happy with all the work done. Better than expected and value for money. Well done Russell, a credit to your profession.
GM Construction Services Ltd
Rating: 5 out of 5
Extension Builder in Swansea
I've been in construction since leaving school and doing my apprenticeship and been running my own building firm for the past 25 years. I cover all aspects of construction large or small and recently have done two barn conversions, inc a stable block in Pembrokeshire and am currently building my own house in Gorseinon Swansea One of the biggest jobs and most proud of was done on a property in Fishguard and was featured on channel 4 Homes By The Sea and is available on YouTube, 1st series, 1st episode.
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Latest review:
Extensions- 3 Aug 2019
Can’t speak high enough of this fella. The work he done is amazing and the standard is fantastic. Bit dubious using a website rather than a recommendation, however the price quoted was very reasonable and we went for it. Gareth built us an extension/sun room and the result is top draw. Not just a good tradesman but a really nice guy to go with it. Kept us informed throughout, gave us ideas on what would be beneficial or look aesthetically nice (from his experience). The result is beyond what we envisaged. Honestly, give Gareth a call, you will not be disappointed. Thank you Gar - we love it, the whole family love it, and the various neighbours that have been in to see love it!!!
Adapt Group Ltd
Rating: 5 out of 5
Extension Builder in Swansea
Professional Company offering a range of building works in the South Wales area.
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Latest review:
Conversions - General- 6 Oct 2024
I cant fault Rhidian and his team- they were professional from start to finish. It was a refreshing change to have builders that kept in touch throughout, who did the work swiftly and left the house cleaned up afterwards. They are clearly experienced and work to a high standard. They woyld be the first people I go to if I ever need more work done
Built right building
Rating: 5 out of 5
Extension Builder in Swansea
I’m a local builder in Swansea that normally undertake and specialise in extensions. Loft conversion and building renovations. Most of my work is on recommendation from architects
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Latest review:
Extensions- 26 Jan 2021
Gareth did a excellent job very reliable and excellent builder
bourne2dig
Rating: 5 out of 5
Extension Builder in Swansea
15 years experience in all aspects of ground work, landscaping, patio laying and operating appropriate machinery. Specialising in excellent standard stone masonry, creative input to aid in making your vision a reality and a commitment to the highest quality service. Bourne2Dig will ensure customer satisfaction from start to finish and work alongside you in the completion of your projects.
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Latest review:
Bricklaying- 11 Feb 2021
I'm really pleased with all the work done by Bourne 2 dig. They were very polite and were very quick and tidy and the end result looks great. I would definitely recommend them.
Dai Mac
Rating: 5 out of 5
Extension Builder in Swansea
Property Mainainance. Kutchen fitting. Bathrooms. Extensions. All aspects of building.
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Latest review:
Bathroom Fitting- 9 Mar 2024
Dai has just finished my bathroom, (complete rip out and renew) And I am so so happy with the finished job! Throughout, Dai and Steve were a pleasure to have in my home, they were always punctual, really friendly, and completely professional, they were clean and tidy and absolute perfectionists. I honestly couldn’t recommend them highly enough! Thank you so much
J Lynch Building
Rating: 5 out of 5
Extension Builder in Swansea
Iam a bricklayer by trade but also take on all types of building work and very good at my job. I have done many new builds from start to finish and Have years of experience from working on big sites such as building blocks of flats down to a lot of small private work no job is too big and no job is too small.
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Latest review:
Carpentry- 7 Apr 2018
Reliable and personable young man. High standard of work. Would recommend.
Black Mountain Construction
Rating: 5 out of 5
Extension Builder in Swansea
We started this company because we saw how often clients were treated like just another job. We believe in doing things differently — putting people first, listening carefully, and delivering results we’d be proud to stand behind.
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Latest review:
Kitchen Fitting- 15 Sep 2025
Job went really well, would fully recommend!
LaMont Building Ltd
Rating: 5 out of 5
Extension Builder in Swansea
LaMont Building Ltd is a construction company specialising in bricklaying, stone masonry and landscaping
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Latest review:
Bricklaying- 12 Jan 2024
Many thanks Ross to you and your team for completing a wonderful job on my damaged wall, looks even better than it did before. You kept me updated and fully explained how you would repair the damage, you've been totally professional and polite throughout the whole process, and I look forward to seeing you again when you carry out the repointing work on my patio.
CMO CONSTRUCTION
Rating: 5 out of 5
Extension Builder in Swansea
We cover aspects of work such as building first fix and second fix internal and external work from the bottom up we cover it all . ❇️ bricklaying all aspects ❇️roofs ❇️retaining walls ❇️ patios ❇️ demolition ❇️ waste disposal ❇️ drainage ❇️ fencing ❇️ upvc Start to finish on extensions and newbuilds Free quotations free friendly advice 🤩
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Latest review:
Extensions- 17 Jan 2025
Clayton was great, communicated really well and has done a great job on our garage extension.
Reflex
Rating: 5 out of 5
Extension Builder in Swansea
Hi there, I’m Luke and we are fully qualified and insured in plastering and decorating , we cover all aspects of plastering and decorating, we can guarantee our work , we cover anything from domestic & commercial and all high spec projects , we a family run business based in Swansea with over 20 years experience. We enjoy all types of work and always go that extra mile for our customers. We are new on here so please try to give us a chance on showing you what we can do . Thanks for reading
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Latest review:
Painting & Decorating- 7 Apr 2024
Professional and attention to detail is Lukes top priority and a very clean and tidy work ethic. Luke communicated continually to check that everything I required was exactly how I wanted. Nothing was too much trouble, thank you so much for making my dream a reality 😊
Millon
Rating: 4.7 out of 5
Extension Builder in Swansea
All types of carpentry/joinery Full house renovations •Kitchens & kitchen designs •Fire door installation. •Built in cupboards •Bedroom fitting •Flooring •Plastering •Tiling •Roofing
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Latest review:
Carpentry- 5 Oct 2024
Took my door to prepare for fitting and never came back. Will not answer his phone or reply to messages. I will be pursuing in court.
RJD Home Improvements
Rating: 4.9 out of 5
Extension Builder in Swansea
General building, roofing, landscaping, extensions, internal and external plastering including EWI system, PVC windows doors facia boards, guttering. CERTASS registered installer Membership number 24-1369
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Latest review:
Extensions- 29 Sep 2025
Our job started out as a small kitchen extension and shower/utility room but grew to also include fitting of a new kitchen, new kitchen ceiling, new double glazed windows to back of house, new garden wall approximately 50ft long and 5ft high and insulation to two internal bedroom walls. Rob and his team are extremely versatile and very approachable. I would certainly recommend them and we are hoping to have some more double glazing work done in the near future.