Extension builders in Clerkenwell

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.5 (17 reviews)

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Some of our top rated extension builders in Clerkenwell

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B.CANI Limited
Rating: 5 out of 5
Extension Builder in Clerkenwell
Reliable, fully insured construction company delivering high-quality workmanship across residential and commercial projects. We cover all aspects of construction including extensions, renovations, loft conversions, kitchens, bathrooms, roofing, landscaping and full refurbishments. From design to completion, we manage every stage with clear communication, fair pricing and attention to detail. Customer satisfaction, safety and deadlines are our priority.
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Latest review:
Extensions- 11 Jan 2018
This was our first project, and we were exceptionally fortunate to find Bujar. We're actually getting tired of hearing our family and friends tell us how lucky we are and how amazing he sounds. One of the most honest, trustworthy, and genuine people I've ever met. If I had a problem, he'd be one of the first people I'd call! In fact I did last week and he came to the rescue :) His team were all friendly, polite, conscientious and very tidy. They worked around us as much as they could, always making sure we had access to what we needed which sometimes meant it took them longer to work. Bujar is a perfectionist and is so proud of what he does, he made sure everything was done to a high standard - the estate agent who came round after we were done was impressed! His prices are very fair (better value than other quotes we got and much less time). We couldn't believe it was done in the 3 months he said it would take, and we managed to fit in a few extra bits and pieces after that. He was so helpful throughout, took all project management on and didn't bother us unless an important decision needed to be made. He drove us around all over the place to sort kitchens, bathrooms, etc. and gave us really helpful advice throughout the process. Highly recommend him and his team. I can't imagine ever wanting to look for another builder unless I had to - something that is quite common amongst Bujar's clients. We are extremely pleased with everything about our new house.
EHJ Developments LTD
Rating: 4.8 out of 5
Extension Builder in Clerkenwell
Our construction company offers comprehensive services encompassing plumbing, electrical work, carpentry, full house refurbishment, and loft and house extensions. With expertise in diverse trades, we deliver high-quality craftsmanship and personalized solutions to meet every client's needs. From minor repairs to large-scale renovations, we handle projects with precision and efficiency, ensuring superior results and client satisfaction. Our skilled team is dedicated to excellence, using innovative techniques and premium materials to achieve durable and aesthetically pleasing outcomes. Whether it's upgrading a kitchen, adding extra space with a loft extension, or revamping an entire property, we pride ourselves on delivering exceptional construction services that enhance the functionality and value of homes.
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Latest review:
Carpentry- 15 Jul 2026
Happy to recommend EHJ Dev. Ltd. Ash did a nice job (carpentry) was prompt; good communications and we would definitely ask him again when the need arises.
Deans Property Preservation
No reviews yet
Extension Builder in Clerkenwell
At Deans Property Preservation, we pride ourselves on our personal service and attention to detail, working closely with our clients to restore and create beautiful homes. With 35 years of experience, we work on buildings of all sizes and ages, taking on the design and build of contemporary kitchens, bathrooms and extensions, working in both residential and commercial settings. We have vast amounts of experience in refurbishing period properties across the capital.
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EBV construction
Rating: 5 out of 5
Extension Builder in Clerkenwell
All building construction loft conversion Extension Refurbish Carpenter Plastering rendering Dry lining Garden walls
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Latest review:
Plastering- 22 Jul 2023
Mr Meta and his skilled team completed the plastering job as promised with high standard,good, honest and profesional. Will be hireing on other jobs.Many thank👊👍
Heg Construction ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
Hello I am Edmond, the proud owner of HEG Construction Ltd, A little about us With many happy and returning customers over the last 15 years, you can be sure of being well looked after. Our aim is to provide a stress free project, delivered in a manner that I am confident will exceed your expectations. I work with a small team of trusted colleagues, who communicate and work together well. Our customers are accustomed the outstanding quality of projects we complete, by sourcing quality materials with experienced installers we create truly bespoke masterpieces lasting our customers many years. Up to 5 year guarantees are included as standard on all completed work. Thank you for taking the time to consider our company’s profile, I look forward to hearing from you. HEG Construction Ltd
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Latest review:
Edmond did stellar work on the full kitchen renovation of our central London flat, and I can't recommend him highly enough. His professionalism, expertise, and attention to detail are on another level, and he is an excellent communicator. The end result was meticulous; he worked efficiently within the agreed timelines while resolving unexpected challenges and providing solid guidance throughout the project. Edmond also has a strong network of professionals who were just as reliable and easy to work with as he is. We also appreciated how tidy our home was left every day and how well all areas were protected during the build.
M R CARTER BUILDERS Ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
I have been trading since December 2015 and personally have over 25 years of electrical and civil engineering and construction experience. The Company has been NICEIC reg from March 2016 and undertakes all electrical work and Certification services . We are fully insured and we have a fully qualified team of construction experts , we undertake full renovations and extensions , with all building control and certification adhered to by the letter , working with you to give you what you want .
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Latest review:
Extensions- 21 Jun 2020
I found Mark to be a thorough professional always on top of things. Most enjoyable and a pleasure to work with him . I will definitely recommend him. ⭐️⭐️⭐️⭐️⭐️
M Murphy Build
Rating: 5 out of 5
Extension Builder in Clerkenwell
Hello! My name is Mick. I have many years experience in all areas of construction. I enjoy what I do & love creating new spaces for people, so it has to be of high quality or else there would be no satisfaction in it for me! I have done extensions, sunrooms, renovations, lofts, bathrooms, kitchens and new builds. My company name is Advancora Building.
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Latest review:
Extensions- 21 May 2019
Excellent workmanship, completed extension with bathroom in good time. Very pleased with the work!
KB construction solutions
Rating: 4.5 out of 5
Extension Builder in Clerkenwell
.Kitchen Fittings .Loft Conversion .Brick Work/ Skimming .Plastering/Plumbing .Wall & Floor Tiling .Gardening/ Fencing .Bathrooms .Wood Flooring .Extensions
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Latest review:
Extensions- 24 Apr 2021
Kujtim, working with his glazers, created a bespoke porch with a glass roof just as we asked. We were impressed with the finish of the internal plastering and Kujtim was able to come to our rescue one evening when we became locked outside the newly installed porch door. Although the project took longer than was anticipated we are happy with the quality of the finished product.
MarioM Construction Ltd.
Rating: 5 out of 5
Extension Builder in Clerkenwell
We have spent 15 years in the construction sector. Having experience both in the private sector and commercial sector, we use innovative and modern technology to complete your work. In effect, we achieve higher precision, shorter work times and due to this a lower cost for you. Our deal with a builders’ merchant allows customers to access unique deals which are not available elsewhere. You can learn even more about us by looking at our past projects
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Latest review:
Extensions- 18 Jul 2016
Mario is a brilliant guy with full knowledge of the job. His workers were very punctual and hardworking and finished the job well. I would definitely recommend Mario to my friends and relatives and will use him in the future. Excellent Finish!!!
Capital Loft Conversions Ltd
No reviews yet
Extension Builder in Clerkenwell
Our company specializing in high-end residential construction, property refurbishments, designing and installation of high-quality custom loft conversions and house extensions across London and the M25. While offering a personalised service, we bring the skills and experience required to ensure your loft conversion is completed to the highest standard and agreed timeline. Whether you are looking to add value to your property or create more space, our team will handle everything from planning permission to architectural design and construction. Use our experience and free initial consultation to understand the value we can add to your home.
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OBM Properties
Rating: 5 out of 5
Extension Builder in Clerkenwell
Renovating & maintaining buildings for over 40 years. Extensions, Loft Conversions, Refurbishments Fitted Kitchens, Bedrooms, Offices,Bathrooms Flooring , doors and windows. Interior & exterior decorating, Tiling, Glazing Property maintenance, Handyman service, curtain rails, shelving, storage solutions, picture, mirror hanging, no job too small gather jobs together for excellent value
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Latest review:
Painting & Decorating- 28 Oct 2024
Tony arrived on the same day of being selected for the job, and completed all the work to a very high standard. You will struggle to find a better quality decorator!
Patrick the Builder Ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
Hi I’m PATRICK from Patrick the builder end I’m very happy to the next job for you General building Brick work Block work Full Refurbishment Loft Conversion Fibreglass roof Garage conversion Dive way Patios Garden conversion & Maintenance
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Latest review:
Extensions- 13 Mar 2022
Patrick and his team were hired to build a garden room. Reasonably priced, offers solutions to problems that might arise during building work, polite and easy to work with. He will also bring his expertise into the project and suggest different ways of doing things or using different products. Happy with the build and will definitely use him again for future projects.
Lazaros
No reviews yet
Extension Builder in Clerkenwell
I am Lazaros Koto, I have 11 years of experience in construction
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Dochita Iosif
No reviews yet
Extension Builder in Clerkenwell
Over 20 years in construction. We are a small and hard working team. We have done many jobs successfully and people like the way we work. If you don't want to have headache and to be safe with the work you have, then we are the right team!
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NSL Sons & Co
No reviews yet
Extension Builder in Clerkenwell
NSL Sons and Co – Expert handyman and repair services you can trust. Fast, reliable, and high-quality work for every home and business.
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Crown builders & landscaping
Rating: 5 out of 5
Extension Builder in Clerkenwell
Crown Builders and Landscaping are new to this platform: please check out our reviews on yell: we have a positive reputation, with several positive reviews on yell and other platforms highlighting their work in paving, driveways, and landscaping. reviews mention efficient service, good communication, and high-quality work, particularly in all aspects of roof repair and maintenance and new driveways and garden transformations.our punctuality, cleanliness, and reasonable pricing is our main goal and always try to achieve 100% customer satisfaction
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Latest review:
Damp Proofing- 24 Oct 2026
Great guy came when he said he would and is carrying out the job just as I want Would highly recommend

4.5

Top rated Extension Builders

Our Extension Builders in Clerkenwell, are rated 4.5 out of 5 based on 17 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.