The quick way to find a local House Extension specialist in Treharris

Rated People

House Extension

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Loft conversion specialist, with 25 years worth of experience.

Elite Roofing & Property Solutions

House Extension

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Elite roofing and property solutions is a family run business we been in the trade for 10 years I took over the trade from my dad was working with him from 17 I’m now 34 plenty of experience

Steadfast Structures

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Hello and thank you for taking the time to look at our profile. We are a group of professionals multiskilled and look forward to helping you achieve your vision

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Reviewed by Chris on 2/7/2026

Unfortunately I can't leave no stars ad that is all this so called building company deserves.They are also unable to tell the truth in their response to Our review.No it wasn't a 3mm drop, when he went back to b+q to get more products to further his bodge up My Wife measured the drop(he claimed at the time it was 5mm.can't even remember his own lies)The drop was 13 mm.Ues He came back and had a 2nd attempt to rectify the bodged job,making an even worse mess.By this time We were both sick to death of him

CDL Building & Carpentry Ltd

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Explore the comprehensive services offered by CDL Building & Carpentry Ltd in the Swansea and south wales areas, we cover all aspects of building and carpentry jobs including comercial and domestic. Some of the job we do are: Extensions Conservatories Loft conversions Kitchens Bathrooms Tiling Garden walls Windows & doors Roofs Repointing Fascias Guttering Flooring Patios Driveways Paving Decking & fencing Plastering All interior carpentry Lime rendering Lime pointing Sand/shoot blasting Fiberglass roofing Fencing New build home / self builds Damp Proofing Complete office refurbishments Complete shop fitting Insurance repair work CDL Building & Carpentry Ltd delivers excellence in every project. Contact us to turn your vision into reality with our professional and reliable services.

Latest homeowner review

Reviewed by Graham on 13/12/2024

Craig and his team (Carne, Jason and the carpenters) were excellent. They were friendly, hard-working and tidy. They coped with unforeseen issues very competently. The communication between trades and with ourselves was very good. We have no hesitation in recommending them and will use them again.

MCINTOSH BUILDERS LIMITED

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Mcintosh builders is the complete package offering all types off building work including complete design package. Please get in touch soon.

Cristina Ltd

House Extension

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Hi my name is florin dura and i have experience and work as builder for 15 years i can do all the works in construction any problem i can solve.

Newman & Sons

House Extension

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Hi welcome to Newman & sons. We're a family based company from Berkshire & also covering the south of England specialising in high quality new builds/refurbishing/emergency repairs/industrial roofs. For over 40 years. Specialist in Roof cleaning/roof repairs / new roofs. Gutters/ upvc Facias/chimneys. We also carry out industrial roofing. We're LABC REGISTERED & only use good quality materials & family tradesmen to get your work done. All quotes are free & no obligation /insurance /emergency. Please call even if it’s just advice. We’re more than happy to help.

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Reviewed by Brian on 15/2/2024

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complete building contractors

House Extension

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Making your dreams reality! We are friendly and reliable contractors that will do our best to make the job run smoothly and fit within your budget. we cover all aspects of building and renovation, kitchen/bathroom fitting and more... we will give you the best quote we can and more importantly make sure the job is done properly inside and out. Just look at are 5* star rating! I look forward to hearing from you, please give us a chance to make your dreams a reality.

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Reviewed by Des on 24/4/2020

Kai and his team done a fantastic job on my garage extension. In this time of lockdown Kai went the extra mile to keep getting the Materials for the Job which he did admirably. I would have Kai and His team back anytime I need work doing A good honest tradesman

M and C Landscaping and home improvements

House Extension

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M & C Landscapings and Home Improvements is a business by a professional. with years of experience. Always looking for new designs and products for your garden and home needs. Whether you need garden maintenance, a new designed garden 100% satisfaction.

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Reviewed by Sonia on 9/4/2025

Work was done to perfection I am so happy with the decking polite and efficient service I would highly recommend

richwood window designs

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Design and installation of quality upvc windows doors and conservatories . We we also offer a bespoke steel base and wall system for conservatories cutting down on cost and installation times . All our products are covered by a 10 year guarantee .

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Reviewed by Jack on 28/1/2023

Great price, completely transparent tradesperson, professional, clean, and courteous. Amazing quality bifold doors fitted to an excellent standard. I recommend Rich and will be using him again.

GSR Construction

House Extension

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A highly skilled construction team with exceptional feedback and ratings. We pride ourselves on delivering work to the highest standards and remain committed to every project until it is fully completed.

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Reviewed by Steffan on 3/4/2026

Martelette & Son's Carpentry & Fencing

House Extension

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I am Adam Martelette. Founder and Manager for a our small family business Martelette&sons, based in The city of Cardiff. Having the highest certification possible to obtain in Great Britain, we utilise these skills along with our shared 20+ years experience to provide high quality work at low affordable prices. We specialise in all Aspects of Carpentry and Fencing, but also work along side other trades such as scaffolding, plastering etc. So orchestrating jobs that require multiple different types of work can be tackled with ease. Feel free to give the team a call / message for a free scheduled quotation.

Cymraeg Construction

House Extension

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At Cymraeg Construction, building work has been at the heart of our family for generations with skills, knowledge and training passed on from one to another, even in the day to day running of the business we can call upon over 40 years experience from my father who is an integral part of the company and has made us what we are today with a passion for quality that shines through on every job we undertake. Covering all of South Wales, you can be sure to rely on us to undertake any project you may have from conception to completion, we can take care of all aspects of the build including planning and skilled tradesmen in all trades, let us deal with all the complications and timings as we project manage the process to ensure everything is done correctly and to schedule all while keeping you informed every step of the way. Please feel free to contact us for a free no obligation estimate on any work you may have. Cymraeg Construction.

Latest homeowner review

Reviewed by carole on 22/5/2025

Gareth and his team were amazing and professional throughout. He was very knowledgable regarding the options available to us. All work was completed quickly and efficiently. Gareth kept in contact with us throughout our garage renovation and even kept in touch afterwards to check everything was ok for the fitment of the garage door. I wouldn’t hesitate to recommend Gareth and his team and would definitely use them again for any future building work on my home. Great job completed.

Carlos Trader

House Extension

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Karlos Trader – Your Reliable Home & Garden Experts With 12 years of experience, we handle everything from clearing clutter, painting, wallpapering, tiling, installing kitchens and flooring, to gardening services like lawn care and tree work. I personally carry out the work myself, ensuring high-quality results you can trust. Let us make your home and garden look their very best!

Property Renovation&Decorating Services

House Extension

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Property Renovation & Decorating Services "Excellence in Construction, Passion for Detail" With over 17 years of solid experience in the construction industry, our team provides comprehensive renovation and interior decorating solutions designed to bring your vision to life. Led by Emy, a professional renowned for his rigor, integrity, and craftsmanship, we are committed to delivering every project to the highest standards of quality. Our Services We offer a wide range of construction and finishing services, professionally managed from initial concept to final handover: Extensions & Conversions: Expert loft conversions, home extensions, and new builds. Full Renovations: Complete modernization of houses and apartments, including bespoke kitchen and bathroom installations. Premium Finishes: High-end interior and exterior painting, professional plastering, and precision tiling. Flooring: Installation of solid wood, engineered flooring, and carpet fitting. General Building: Structural repairs, general maintenance, and full-scale property refurbishments. Why Choose Us? Our reputation is built on four core pillars that ensure every client receives exceptional service: Attention to Detail: We believe perfection is in the finishing touches; every task is executed with surgical precision. Timeliness: We respect your schedule and strictly adhere to agreed deadlines. Transparency: Open communication and honest, competitive estimates with no hidden costs. Proven Expertise: Over 17 years of successful projects and satisfied homeowners. Contact Us for a Free Estimate Ready to start your home transformation? Contact us today for a free consultation and a personalized quote.

Latest homeowner review

Reviewed by Pratish on 30/5/2026

Very responsive, did a fantastic job at my rented property. My tenant was happy with everything and was done in timely manner. Would highly recommend.

ROOFTOP CONVERSIONS

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ROOF TOP CONVERSIONS THE COMPLETE BUILDING COMPANY. WELLCOME TO RTC WE HAVE BEEN CARRYING OUT BUILDING WORKS FOR OVER 25 YEARS. HEAR ARE SOME OF ARE WORKS . LOFT CONVERSIONS+ HOME EXSTENSIONS+ GARAGE CONVERSIONS +

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Reviewed by Clive on 23/10/2023

Roger and his crew achieved a complete fire door and frame (with fitments) replacement in a single day. They left my flat clean and tidy and were away by 3.15pm. Great work

SH Bespoke

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All aspects of building work. Carpenter by trade. Flat EPDM Roofing specialists

Artcon Construction

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Hi, we are a family run professional company that offers many aspects of construction and building work, after training in 2005 to 2009 at carillion bricklaying college in Cardiff, myself (Leyton) and Jason then decided to work in the house building industry, building 100s of new homes from £100k to £1 million, working for companies such as Redrow, Barrat homes and many others, we gained immense experience and from this decided to start a company, after over a decade of working for other companies, we now have many years experience in many areas, including new build, extensions, bespoke garden project, installation of bi fold doors, as well as vast experience in groundworks, we also offer roofing services of the highest quality, we are both NVQ level 3 qualified and both have the advanced construction award qualification rarely seen, we achieved Chas accreditation as well as sssts, we are a company who prides ourselves on going above and beyond on every project we carry out, you won't find more able tradesmen who do what we do.

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Reviewed by Justin on 5/1/2026

SERGIU NASALEAN

House Extension

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Serious and hard working. Since 1998 in EU and from 2010 in UK . "Work smart not hard" .

Latest homeowner review

Reviewed by Deborah on 12/5/2026

Absolutely brilliant. He was very professional did a fantastic job. I would 100% recommend