Extension builders in Blackwood

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 5 (3 reviews)

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Some of our top rated extension builders in Blackwood

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Blackrock Construction
No reviews yet
Extension Builder in Blackwood
We at Blackrock can carry out work from the ground upwards. We will fully project manage so you don't have to. We cover extensions, renovations, new build and even do the little job you hate. We are a new family run business but with a combined experience of 80years in the construction industry. Just made sense to finally bring it altogether!
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Jason collins
No reviews yet
Extension Builder in Blackwood
We are a building company we undertake new builds ,extension refurbishment including electric, plumbing,underfloor heating we will projected manage from drawings building regulations planing to final completion
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DM Groundworks
No reviews yet
Extension Builder in Blackwood
19 years experience in Groundworks, 9 years experience running housing and civil jobs. Will travel approximately 15 miles. Have all relevant tickets from plant to site saftey. I build with the end user in mind. My philosophy is to listen carefully to client needs, provide clear updates, and deliver results I’d be proud to put my name on.
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Legion Developments
No reviews yet
Extension Builder in Blackwood
Legion Developments Luxury Garden Specialists 📍 Cardiff & South Wales Premium Landscaping, Driveways & Extensions
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Lm concrete solutions
New on MyBuilder
Extension Builder in Blackwood
At LM Concrete, we provide high-quality concreting services for domestic and commercial projects of all sizes. From driveways, patios, foundations and concrete slabs to paths, yards, bases and more, we take pride in delivering reliable workmanship and a professional, long-lasting finish. Whether it’s a small residential job or a larger project, we work closely with every customer to ensure the job is completed to a high standard, on time and with attention to detail. ✅ All types of concrete work ✅ Power float ✅ Brush finishes ✅ Patern print ✅ Domestic & commercial ✅ Quality workmanship ✅ Reliable & professional service ✅ Free, no-obligation quotes 📍 Covering South Wales and surrounding areas 📞 Get in touch for your free quote
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D H building
No reviews yet
Extension Builder in Blackwood
All types of building work from new houses, extensions, garages, garden walls, patios, fencing, decking
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Watts Building Contractors Limited
Rating: 5 out of 5
Extension Builder in Blackwood
I run a well established and VAT registered Carpentry & Building business with over 15 years experience. I have an experienced qualified team of tradesmen who are more then capable of carrying out all types of building work. All of my work is completed to the highest standard and I guarantee customer satisfaction.
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Latest review:
Extensions- 29 Jul 2017
We are so pleased to have employed Tom Watts to build an extension (approx. 15 sq metres) off our existing kitchen and dining room. This was in order to create a large family room including a new kitchen installation. The site was not without its challenges as our house is built on a slope and required a very deep foundation to be laid. The build also required 3 RSJs (in order to remove existing walls) to create a modern space for open-plan living. Tom and his team were very easy to work with communicating any changes to the schedule and proving to be very reliable. Inevitably, as with any job such as this, there were instances where a good problem-solver was needed. Tom was able to offer creative solutions which kept the job progressing. After completing the building work T.W.Carpentry & Building also installed our new kitchen and finished the new room with new skirtings and door frames. We are very satisfied with the finished project and due to the quality of the work we are very happy to recommend this builder.
RODRIGUES CREATIVES LTD
No reviews yet
Extension Builder in Blackwood
Hi, I’m Rhyd, a reliable and experienced builder with a focus on high-quality workmanship and customer satisfaction. I specialise in home extensions and take pride in delivering projects on time and within budget. Whether you're planning a small upgrade or a full-scale build, I’ll guide you through the process with clear communication and honest advice. I’m fully insured, and all work is carried out to meet current building regs. Feel free to get in touch for a free quote or to discuss your ideas – I’m always happy to help.
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C.W handyman services
Rating: 5 out of 5
Extension Builder in Blackwood
Hi,my name is Craig and I run my own little handyman business, I pride myself on good honest fairly priced work,at a professional level, I've been doing all sorts of jobs and building my business over the last 3 years,jobs including Kitchen fitting, Bathroom fitting, Facias and Gutter Cleaning, Painting and decorating, General plumbing and building, Tiling, Flat pack building, All jobs undertaken, if this fits your needs then please don't hesitate to get in touch. Thanks again.
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Latest review:
Extensions- 19 Oct 2025
Did a great job, really efficient job. Everything was explained really clearly at each step of the job. Thanks so much Craig!
M.G bricklaying & landscaping
Rating: 5 out of 5
Extension Builder in Blackwood
Mg building and landscaping Extensions/conservatory/orangeries/patios porcelain/roofing/and general building work 20 years experience
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Latest review:
Extensions- 21 Aug 2024
We can’t thank Matthew and the team enough for the build. Great communication throughout and Matthew’s experience and suggestions were welcomed during the initial planning, allowing us to make informed decisions on the final product. Where obstacles were met, they were dealt with swiftly allowing for a much less stressful experience. Our home is now perfect for our growing family as we are able to utilize so much more space.
Keith Sealey & sons
No reviews yet
Extension Builder in Blackwood
Hi, I’m Keith, owner of Keith Sealey & Sons Electrical Services. I’m a NAPIT Approved electrician and City & Guilds qualified, with over 40 years’ hands-on experience in domestic electrical work across South Wales. I specialise in high-quality, compliant electrical installations and upgrades, including: • EICR testing & landlord certification • Consumer unit replacements • Fault finding & repairs • Full & partial rewires • Kitchen & bathroom electrics • Lighting upgrades & safety improvements All work is carried out to current regulations and Part P compliant, with safety and attention to detail as standard. I understand that choosing a tradesperson is about trust. That’s why I focus on: ✔ Clear communication ✔ Turning up on time ✔ Respecting your home ✔ Leaving everything clean and tidy ✔ Doing the job properly the first time Much of my work comes from repeat customers, landlords and estate agents who value reliability and experience. If you’re looking for a professional, established electrician who takes pride in his work, I’d be happy to discuss your project. Keith Keith Sealey & Sons Electrical Services
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gnconstruction
No reviews yet
Extension Builder in Blackwood
We are a family run business with many years experience within the construction industry. Our reputation has been built upon skill, reliability and quality. Customer satisfaction is at the heart of our ethos.
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Lee Hallam & sons
No reviews yet
Extension Builder in Blackwood
I am a builder with 34 years in the trade time served bricklayer when I was 16 and have always done everything in the building trade have my two sons working for me as well as builders we done stonework caswell
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Dmc Bespoke building.
Rating: 5 out of 5
Extension Builder in Blackwood
Hi my name is Dominic. I have worked in the building trade for 30 years now, I started at the age of 12 working with my dad. I have done all wet trades. I specialize in brickwork and stonework to very high standards. I drive all my own plant to do my own groundwork and setting out. I have a lot of pride in my work. We are a family business friendly and polite. Thanks for taking the time to read our profile. Many thanks Dominic
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Latest review:
Stonemasonry- 9 Aug 2026
Working with Dom and his team has been a great experience. His stonemasonry is first class as are his project management skills. He is meticulously tidy and expects this of others. Highly recommended.
S W Rendering ltd
No reviews yet
Extension Builder in Blackwood
We are a building company that supply Bricklayers and Renderers to the local and national main contractors for small to large scale contracts. We also undertake residential & commercial smaller scale projects, extensions, alterations, etc. We meet all CDM Regulations revised in 2015 and are accredited with CHAS.
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PnP Facilities
No reviews yet
Extension Builder in Blackwood
My name is Paul and I’m the proprietor of PnP Facilities. I am a professional senior site manager and quantity surveyor with 30 years trade experience. PnP Facilities is a small company with a good reliable, friendly, honest and clean workforce. We are able to cover most trades and use regular sub contractors for any elements we can’t undertake, however we still manage the process to ensure every project is done to the highest standards. Our costs are realistic with no nasty surprises and we provide free professional quotations. New to My Building, but by no means new to building, all work guaranteed and references provided on request.
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Top rated Extension Builders

Our Extension Builders in Blackwood, are rated 5 out of 5 based on 3 reviews from customers like you.

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Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

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

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 Blackwood 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 Blackwood who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Blackwood?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Blackwood 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 Blackwood extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Blackwood home extension project is likely to cost.

Find extension builders in Blackwood with MyBuilder

Hiring the right extension builder in Blackwood 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 Blackwood extension builders. Once your job is live, we’ll share it with home extension builders in Blackwood who can express their interest.

Step 2: Compare different extension builders in Blackwood

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

Step 3: Hire Blackwood extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Blackwood, 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.

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

What to ask a Blackwood extension builder before hiring?

Before hiring an extension builder in Blackwood or extension building company in Blackwood, 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 Blackwood?

An extension builder in Blackwood 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 Blackwood 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 Blackwood?

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 Blackwood 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 Blackwood 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 Blackwood

Can an extension builder in Blackwood help with planning permission?

Yes, many extension builders in Blackwood 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 Blackwood handle everything from design to construction?

Many Blackwood 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 Blackwood help with materials and finishes?

Yes, most extension builders in Blackwood 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.