Extension Builders in Clerkenwell

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (16 reviews)

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Some of our top rated extension builders in Clerkenwell

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HR Prime Construction Ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
HR Prime Construction HR Prime Construction is a professional and reliable building company with 5+ years of industry experience. Our skilled team is committed to delivering high-quality workmanship, attention to detail and excellent customer service on every project. We understand that choosing a builder requires trust, so we focus on clear communication, honest advice, reliability and professional workmanship from start to finish. Whether it’s a small repair, renovation, bathroom project or larger building work, we treat every job with the same care and attention. Our experienced team works efficiently, keeps work areas tidy and respects your home or property. We aim to complete every project to a high standard while keeping customers informed throughout the process. Why choose us? * 5+ years of experience * Skilled and reliable team * High-quality workmanship * Honest communication * Clean and respectful approach * Customer satisfaction focused At HR Prime Construction, we believe quality, reliability and trust are the foundation of every successful project. We take pride in our work and aim to deliver results our customers can be proud of.
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Latest review:
Restoration & Refurbishment- 14 Sep 2026
Really happy with the work. They were professional, reliable and really easy to deal with. Communication was excellent and they understood that I needed the job done quickly, but actually managed to get it done even earlier than expected. Really good work and no hassle at all. I’ll definitely be using them for any future jobs and would highly recommend them.
Fonseca’s
No reviews yet
Extension Builder in Clerkenwell
I am a dynamic and results-oriented entrepreneur in the construction industry, committed to delivering high-quality, safe, efficient, and rigorous infrastructure solutions. With solid experience in project collaboration, operations, and field execution, I bring both technical knowledge and practical leadership to every project I oversee.
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M.H Brickwork
Rating: 5 out of 5
Extension Builder in Clerkenwell
Welcome to M.H Brickwork. We are a family run business of skilled and qualified bricklayers who have over 30 years experience in all aspects of the bricklaying trade. We pride ourselves on the quality of all our work. You will find our pricing very competitive.
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Latest review:
Michael did a number of jobs for us including a front wall, small garden walls either side of the front path and restructuring the path to include front steps. Michael was reliable and able to give us ideas on what could be done. He is polite, his work is of a high standard and he approaches his work with real professionalism. We are very happy with his work and would recommend him.
EmiMata
Rating: 5 out of 5
Extension Builder in Clerkenwell
All building maintenace Painting All sort of Carpentry Building Gardening
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Latest review:
Groundwork & Foundations- 29 Nov 2025
Working with emi was a breeze
Curea Alexandru
No reviews yet
Extension Builder in Clerkenwell
Reliable and experienced builder specializing in home extensions, loft conversions, pitched roofs, and flat roofs. I take pride in delivering high-quality workmanship, attention to detail, and completing projects on time and within budget. With solid experience in residential construction, I can manage projects from start to finish, ensuring clear communication and a smooth process for every client. Whether you are looking to expand your living space with an extension, convert your loft into a functional room, or repair or install a new roof, I provide professional and dependable services. My goal is always customer satisfaction, using quality materials and maintaining a clean and safe work environment. No job is too big or too small, and I am always happy to offer advice and solutions tailored to your project. Services include: - House Extensions - Loft Conversions - Pitched Roof Installation & Repairs - Flat Roof Installation & Repairs - General Building Work Friendly, trustworthy, and committed to high standards. Feel free to get in touch to discuss your project.
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Avista Construction Ltd
No reviews yet
Extension Builder in Clerkenwell
Extensions and loft conversions, carpentry and joinery, bathrooms and kitchens fitting, decorating and all relating works
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Goldenfield
No reviews yet
Extension Builder in Clerkenwell
Loft convention, kitchen Extention, house conversion to flats.
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Option group
No reviews yet
Extension Builder in Clerkenwell
London Essex based sole trader NVQ3 certified
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Smutek Construction LTD
No reviews yet
Extension Builder in Clerkenwell
Experience small business from 2006 ltd from 2015 Extension, lofts conversion, basements. Splitting houses for flats. Kitchen ,Bathroom fittings, wet rooms, stone finish. Electric installation under 18 edition. Smart home,Lutron system Plumbing installation qualified works Heating system :new ,powerflushing, conversing open system to pressure, boiler repair. Gas work: Landlord rec CP12, boiler fiting
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Eloah Israel security and construction Ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
Hi, we are a company that prides itself on providing good work to our customers, making their dreams come true! we guarantee complete satisfaction and quality in carrying out our work, respecting the delivery times determined by our customers
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Latest review:
Erick demonstrates remarkable thoroughness, reliability, and trustworthiness. His keen attention to detail is exceptional, and he leads a highly efficient team that promptly meets all demands and tasks. He successfully refurbished my entire house in Northampton, adhering to the projected timeline without any delays or setbacks. Throughout the project, he never dismissed any of my requests and fulfilled them all effortlessly. Erick is always easily accessible, promptly responding to calls and messages. I have enthusiastically recommended him to several of my friends, all of whom are immensely satisfied and grateful for his services. Furthermore, his pricing is fair and reasonable, leaving me extremely pleased with the quality of his work.
Lcd
Rating: 1 out of 5
Extension Builder in Clerkenwell
Hy I am cris more 15 years experience in carpentry and building work
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Latest review:
Joinery & Cabinet Making- 8 Jan 2024
Absolute cow boy 🤬 Don’t even think of hiring So many faults Door not closing Plinth boards cut wrong So much more disgrace
Alex Construction
No reviews yet
Extension Builder in Clerkenwell
Hi. I’m doing almost all kind off buildings work: Extension-Loft-House Refurbishment-Tailing-Rendering-Carpentary-Drywall-Painting-Kitchen Fitted-Bathroom Refurbishment
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FWS Builders
Rating: 5 out of 5
Extension Builder in Clerkenwell
Hi We are FWS Builders and we supply a full service from ground works, the build, gas, electrics, plastering, kitchen fitting, bathroom fitting, roofs, windows, doors and much more. FWS Builders take great pride in our work and our services range from loft conversions, garage conversions, extensions, refurbishments, maintenance in home or business and any general repairs.
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Latest review:
Fletcher and his team did a 5 metre extension on my kitchen, installed a new kitchen, new doors and new floorboards throughout the downstairs. All members of his team were absolutely outstanding. The workmanship looked extremely professional and it turned out so much better than I expected. If there was ever a problem, it was never a case of ‘we can’t do that’ there was always a solution and I never felt stressed as I knew that whatever cropped up, they dealt with it. They were all so friendly and I felt at ease with them all the time. When I went to work, I left them to their own devices and they always locked up perfectly for me. I can’t recommend them enough and I will certainly have them back when I need more work completing.
Ledi Gjata
No reviews yet
Extension Builder in Clerkenwell
Experienced In: Full Extensions Loft Conversation All internal alterations and installations Work with landlords and privately owned properties.
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Mj
No reviews yet
Extension Builder in Clerkenwell
Bathrooms
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Arworks
No reviews yet
Extension Builder in Clerkenwell
I have had the privilege of working on a 260-year-old Grade Listed building in Islington, London, under the close supervision of conservation inspectors. This project required a careful balance of tradition and innovation — I combined the use of modern machinery externally with traditional, delicate methods internally to ensure the building remained completely scratch-free. My experience has given me a deep respect for heritage projects as well as the skills to deliver high-quality results on modern refurbishments.
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Top rated Extension Builders

Our Extension Builders in Clerkenwell, are rated 4 out of 5 based on 16 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Clerkenwell?

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

Find extension builders in Clerkenwell with MyBuilder

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

Step 2: Compare different extension builders in Clerkenwell

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

Step 3: Hire Clerkenwell extension builders with confidence

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

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

What to ask a Clerkenwell extension builder before hiring?

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

An extension builder in Clerkenwell 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 Clerkenwell 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 Clerkenwell?

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 Clerkenwell 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 Clerkenwell 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 Clerkenwell

Can an extension builder in Clerkenwell help with planning permission?

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

Many Clerkenwell 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 Clerkenwell help with materials and finishes?

Yes, most extension builders in Clerkenwell 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.