Extension Builders in Caerphilly

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (6 reviews)

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Some of our top rated extension builders in Caerphilly

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Hillier Construction Services
Rating: 5 out of 5
Extension Builder in Caerphilly
We are a small general construction business with 20years expertise. We carry out a range of works including landscaping, extensions, Upvc windows and doors, ground work and maintenance.
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Latest review:
Bricklaying- 1 Dec 2018
Guys turned up when they said they would and did a great job. Thanks Glyn
R Rowley plastering
Rating: 5 out of 5
Extension Builder in Caerphilly
Qualified solid and fibrous plasterer, All aspect of plastering undertaken. 15years plus on site and domestic refurbs Degree educated qualified construction lecturer for 5 years. Portfolio available with recommendations R Rowley plastering
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Latest review:
Plastering- 4 Sep 2020
Living room walls and ceiling plastered. Communication leading up to the job and during was great. Richard was great to deal with. Started first day and arrived early which is always a good sign. I went away for a few days whilst work being done and Richard kept me informed and sent through pictures and video. Really, really pleased with finish and can’t wait for it to dry out now. Cleaned up once finished too. Richard to come back to finish off once other works done and this hasn’t been a problem with him either. Would definitely recommend.
McCann Building Services
Rating: 5 out of 5
Extension Builder in Caerphilly
DEDICATED PROPRIOTER OF A SMALL BUILDING COMPANY WHICH TAKES A GREAT PRIDE IN ITS WORK FOR OVER 20 YEARS WE HAVE BEEN HELPING OUR CLIENTS REACH THEIR DREAM CHANGES 2004 BUILDERS FROM HEAVEN FINALISTS WELSH COMPANY OF THE YEAR WE ENJOY OUR WORK AND ARE VERY PROUD TRADESMEN YOU WILL ENJOY YOUR HOME AND EVEN MORE OUR PRICES WHEN WE HAVE FINISHED PENARTHS NUMBER ONE LOCAL BUILDERS SMALL OR LARGE JOBS UNDERTAKEN OUR EXPERIENCED TEAM WILL HELP WITH THE DESIGN START TO FINISH
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Latest review:
Extensions- 4 Apr 2024
Great work, tidy and quick Would recommend
ABM Builders
Rating: 5 out of 5
Extension Builder in Caerphilly
abm builders is a father and son business working together for more than20 years. qualified bricklayer and other skills patios, decking, drainage, concrete, plastering, bricklaying, and extensions, chimneys, rsj fitted, plumbing ,tarmac driveways and much more. new to my builder , got good feed back off other web site. hope to be short listed so we can contact you soon as possible to help you complete any work that is requiring our services thanks mike abm
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Latest review:
Guttering- 16 Jan 2018
New connection to existing manhole. Great Team! Contacted me quickly after posting job, quoted and started next day! Happy with the job and will use again!
Add-venture
Rating: 5 out of 5
Extension Builder in Caerphilly
We have over 20 years of experience specialising in bathrooms and extensions, we aim for customer satisfaction and time framed completions whilst maintaining a high standard of work. Please do not hesitate for your quote so we can add to your venture and see your vision become reality.
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Latest review:
Bathroom Fitting- 1 Dec 2025
James completed my bathroom in 6 days. Absolutely delighted with it. Professional and reliable. Always kept me informed communication excellent. I 100%recommend James he is a perfectionist.
Paul Heinrich
Rating: 4.9 out of 5
Extension Builder in Caerphilly
I consider myself a passionate builder and renovator specialising in conversions and extensions with 20 years of professional experience in the construction industry covering 5 countries. I have my own van full set of tools and professional equipment. My daily rate is £250 or £30 per hour 20% TAX included no VAT added I would appreciate if you please try and do your best to ensure that I'm the right person for the job when considering to shortlist me. Kind regards, Paul Marian Heinrich
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Latest review:
Conversions - General- 30 Jan 2019
We recommend Paul highly and will definitely employ him again. Paul is highly skilled at what he does and he is very committed to the quality of his work. He ensures everything is done to a very high standard. He quotes accurately and his costs are reasonable. The breaking down and finishing of the wall between our kitchen and dining room makes our home looks great! He has good suggestions which we did not think about and which enhances the effect. We are really delighted with the quality, the speed and the aesthetics of the work that Paul has done for us. We will be asking Paul to come in to work on many other refurbishments to our home.
BHC Cardiff
No reviews yet
Extension Builder in Caerphilly
15+ Years of Experience. We can help you with small Jobs - Garden Maintenance, General Maintenance, Clean your gutters, Repair Any issue your Property Puts in Your way. All the Way to Big Extensions, Full Property Refurbs. We have great experience with all various Trades. We Aim to Please and Look after our customers with Fast Call Outs, Adapt to any situation. We want to be Kind and Fair! We Hope you Choose us so We can Build a Relationship Together and provide you with the Best Straight Forward Experience for Your Property!
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Premierfinish
Rating: 4.9 out of 5
Extension Builder in Caerphilly
Welcome to Premier Finish Property Construction Ltd, an innovative building firm specialising in general building projects & construction, renovation & refurbishment and structural integrity repairs. Having been in the construction industry for over 20+years, we have amassed a wealth of experience in the industry. Specialist trades include, structural support methods using the Cintec Anchor System and Helifix structural repair solutions for masonry reinforcement, plastering, coving & decorative wall decoration, exterior applications of Rendering including EWI thermal wall insulation, kitchen installation, bathroom fitting, windows & doors & much more. We prioritise a personalised approach, ensuring a seamless experience at every stage of your project. Our dedicated team manages everything from small renovations to large-scale builds with the utmost professionalism and care. Trust us for high-quality finishes and transformative results.
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Latest review:
Plastering- 25 Jun 2026
What great teamwork. Mark and his boys did an amazing job in repairing and coating the walls. The work was carried out in a professional way, areas cleaned and rubbish removed. Thank you for your commitment. Would highly recommend Premierfinish.
JMD Carpentry
Rating: 5 out of 5
Extension Builder in Caerphilly
I work alongside my brother. We undertake all aspects of carpentry and brickwork to high level. We have 10+ years experience in the trade. We complete all our work to the highest standard. Making sure our customers are happy with our work is our priority.
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Latest review:
Carpentry- 18 Jan 2023
Really happy with the work Joel completed - very polite, professional and finished job to a really high standard. He was prompt and reasonable and made sure everything g was clean afterwards. Am delighted and would definitely recommend!
Dohme Developments Ltd
Rating: 5 out of 5
Extension Builder in Caerphilly
At Dohme Developments, we are a professional, friendly, and diligent company dedicated to transforming homes throughout South Wales and the South West. Specialising in conservatories, conservatory roof replacements, single-storey extensions, and garden rooms, we help homeowners create beautiful, functional spaces that enhance their daily lives. Whether you’re looking to replace an old conservatory roof with an energy-efficient alternative, add valuable living space with a bespoke extension, or design a stunning garden room for year-round use, our skilled team has you covered. We pride ourselves on offering a no-pressure approach—no pushy sales tactics, just honest, expert advice tailored to your needs. Every project is carried out by approved specialists using the highest-quality materials and techniques, ensuring exceptional results every time. With Dohme Developments, you can relax and enjoy peace of mind, knowing your home is in the hands of trusted professionals committed to delivering the highest standards.
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Latest review:
Conservatories- 23 May 2025
Luke is a great guy, friendly, punctual and did what he said he would. Would definitely recommend him.
SK Builders & Decorators
Rating: 4.9 out of 5
Extension Builder in Caerphilly
I can offer the complete package from start to finish with all work carried out to a high standard by myself with the minimum disruption to the customer.
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Latest review:
Restoration & Refurbishment- 4 Mar 2021
What can I say. This man understands customers and all aspects of building work. Has completed two phases of work to a really high standard. This included fitting a new kitchen and bathroom, plastering and plenty of carpentry. Steve is clear on pricing and gives customers a plan. Any additional work and costing are agreed before he proceeds. Steve offers vision and ideas and helps you understand where you might be making a poor decision. Hes punctual and reliable. Overall has helped us transform our rundown bungalow into a modern family home. Cant praise or thank him enough.
RENOVAE LIMITED
Rating: 5 out of 5
Extension Builder in Caerphilly
Welcome to Renovae – From Foundation to Future At Renovae, we specialise in construction, extensions, full refurbishments, and property management across Cardiff and surrounding areas. From building extensions and loft conversions to kitchen fitting, RSJ installations, roofing, flooring, and complete home makeovers – we deliver quality workmanship, clear communication, and on-time completion. With years of experience, we work to the highest standards, ensuring every project is safe, efficient, and tailored to your vision. Whether it’s a modern upgrade or a full structural transformation, we guide you from first consultation to final handover. ✅ Fully insured – Public & Employers’ Liability ✅ 24-month workmanship guarantee ✅ Transparent pricing and clear contracts At Renovae, we believe every property has potential – let’s build yours into reality.
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Latest review:
Renovae did an excellent job from start to finish. The team was professional, reliable and always on time. The quality of the work is outstanding and they paid attention to every detail. Communication was clear throughout the project and everything was finished to a very high standard. I would definitely recommend them and will be using them again for future projects.
Amaya construction South Wales LTD
Rating: 5 out of 5
Extension Builder in Caerphilly
We are the experts in new build home construction in South Wales. When you approach us, you’ve already made a wise choice. We are proud of our superb reputation for quality workmanship delivered on time and in budget. With a focus on quality craftsmanship, attention to detail, and exceptional customer service, we strive to exceed your expectations with every project we undertake. Contact us today to learn more about how we can help you build the home of your dreams.
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ADW builders
No reviews yet
Extension Builder in Caerphilly
Hi I’m Aaron from A D W builders , I’m a multi skilled tradesman with over 24 years experience. All my work is carried out to the highest of standards and is guaranteed .
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MD Carpentry & Renovations
Rating: 5 out of 5
Extension Builder in Caerphilly
Hello I’m Mike, an experienced carpenter and I carry out all aspects of carpentry, including: first fix and second fix, kitchen fitting, bespoke joinery, roofing and garden rooms. We cover everything from the ground up using quality tradesmen that we trust and have a great reputation. Check out our socials to get a better idea of the work we carry out. Please feel free to contact me to enquire about any work you may need, I am always happy to help. Thanks! Mike
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Latest review:
Kitchen Fitting- 13 Mar 2022
Mike fitted our kitchen and we are over the moon. His workmanship is spot on and he is a very talented carpenter. We really couldn't be happier with not only the finished result but the professionalism and manner in which he completed the job. Nothing was too much trouble and he is very friendly, polite and excellent at communication. Alongside the kitchen Mike also hung 7 internal doors, fitted a handrail to our stairs and renewed a closet wardrobe by adding fitted shelves and a new hanging rail. Again, all of this work was completed to a very high standard and we wouldn't hesitate in hiring him for future projects. All in all, an excellent and highly professional carpenter. Thank you Mike.
Thomas Building services (TBS)
No reviews yet
Extension Builder in Caerphilly
Thomas Building Services/Ponds4U is a father and son business with over 55 years experience. We are members of the Federation of Master Builders and hold the Trustmark government endorsed standards certification. We provide a competitively priced building services to both residential and business customers. Our customers can be confident that the standard of work they receive is of the highest quality.
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Top rated Extension Builders

Our Extension Builders in Caerphilly, are rated 5 out of 5 based on 6 reviews from customers like you.

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What types of services are offered by local extension builders in Caerphilly?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Caerphilly for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Caerphilly who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Caerphilly extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Caerphilly?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Caerphilly will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Caerphilly extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Caerphilly home extension project is likely to cost.

Find extension builders in Caerphilly with MyBuilder

Hiring the right extension builder in Caerphilly with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Caerphilly extension builders. Once your job is live, we’ll share it with home extension builders in Caerphilly who can express their interest.

Step 2: Compare different extension builders in Caerphilly

When you start receiving interest, review profiles of local Caerphilly extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Caerphilly extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Caerphilly, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Caerphilly extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Caerphilly extension builder before hiring?

Before hiring an extension builder in Caerphilly or extension building company in Caerphilly, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Caerphilly?

An extension builder in Caerphilly should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Caerphilly extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Caerphilly?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Caerphilly extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Caerphilly extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Caerphilly

Can an extension builder in Caerphilly help with planning permission?

Yes, many extension builders in Caerphilly can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Caerphilly handle everything from design to construction?

Many Caerphilly extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Caerphilly help with materials and finishes?

Yes, most extension builders in Caerphilly can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.