Extension Builders in Clerkenwell

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (17 reviews)

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Some of our top rated extension builders in Clerkenwell

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Thomas Wicks Building Services Ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
We are a growing domestic building company, with 20 years of experience carrying out all aspects of residential building projects. Extensions, Kitchens, Bathrooms and all of the related services such as Plumbing, Tiling, Electrics. We pride ourselves on giving the customer exactly what they want, making the experience of improving their property an enjoyable one.
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Latest review:
Bathroom Fitting- 2 Jan 2018
Tom was brilliant from start to finish. Clean and very personable, we have used him again since and will do in the future.
Blueprint Builder UK
Rating: 4.7 out of 5
Extension Builder in Clerkenwell
I’m a local builder with over 25 years of experience, specialising in high-quality brickwork and home extensions. From start to finish, I take pride in delivering reliable, professional service and strong attention to detail. Whether it’s a full extension, garden wall, or any kind of brickwork, every project is completed to the highest standard. Customer satisfaction and honest workmanship are at the heart of what I do.
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Latest review:
Conversions - General- 3 Apr 2026
Where do I start. I’ve had more communication with Stuart in the last few months than I have had with anyone else. Our house has rare coloured bricks and I was absolutely shocked that Stuart managed to match the bricks perfectly. Stuart completed the work to such a high standard, we have arranged for him to come back to complete the inside of the extension also. Stuart quoted a really good price, turning up on time everyday. Honestly couldn’t recommend him enough and we will be using Stuart for all future work we intend to have done.
NW London Contracts Ltd
No reviews yet
Extension Builder in Clerkenwell
Dear valued customer We would like to thank you for shortlisting us and hopefully giving us the opportunity to make your home look beautiful, we have 22 years experience in constructing driveways, patios, refurbishment, extensions and alterations on residential properties across London.
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No Limit Building Construction Ltd
No reviews yet
Extension Builder in Clerkenwell
No Limit Building Construction is a leading construction company specializing in a wide range of services, including renovation, refurbishment, demolition, extensions, conversions, and decking. We take pride in transforming properties with expert craftsmanship and attention to detail, whether it's revamping an existing space, creating new living areas, or adding outdoor features. Our experienced team manages every aspect of your project, from demolition to design and build, ensuring quality, efficiency, and exceptional results. We are dedicated to bringing your vision to life with unparalleled professionalism and care.
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Home Renovation City Ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
SKILLS 1 .Plastering 2. Lay Bricks 3. Tiles 4.Renderin 5. Painting decoration 6. Coving 7. Dry Lining 8.Flat Ceilings 9.Renderin 10 Extensions Hello, I am Eneo, proud owner of Home Renovation City Ltd and here’s a little about me: With many happy and returning customers over the last 10 years, you can be sure of being well looked after. My aim is to provide a stress free project, delivered in a manner that I am confident will exceed your expectations. I carry out all work myself and will be your single point of contact. My customers are accustomed with the outstanding quality of my projects, by sourcing quality materials with experienced craftsmanship I create truly bespoke masterpieces lasting my customers many years. Year guarantees are included as standard on all completed work.
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Latest review:
Painting & Decorating- 23 Jul 2022
Eneo painted One bedroom flat in a highly professional manner in a very tight schedule. He was very tidy and provided High quality service. Highly recommended
Christian Andrews
No reviews yet
Extension Builder in Clerkenwell
Carpentry and construction Fitted wardrobes Kitchens Extensions Renovations
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Designs and Developments
Rating: 5 out of 5
Extension Builder in Clerkenwell
At Designs and Developments we have a wide variety of services ranging from bathrooms, kitchens, flooring, decorating loft conversions and extensions.
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Latest review:
Kitchen Fitting- 31 Jul 2019
To say Nick is just a kitchen fitter isn’t doing his work justice, he’s a fantastic project manager and craftsmen as well. When we first met Nick he took 2 hours of his time running through all the options which was when we realised we were actually quite clueless! Although we hadn’t hired him at this point his advice was invaluable. We assumed this would mean Nick’s professionalism would mean he would be very expensive, this was not the case and he was actually a little cheaper than the other parties who quoted. Once Nick started it became apparent that he and his assistant Chow to great pride in their work and worked hard to get the job finished as quickly as possible to the highest standard. They left the site spotless at the end of each day. The result is a fantastic kitchen and flooring which we are extremely happy with. We are already thinking about the next renovation piece in our home and would love to use Nick again. Thanks Nick! Niall & Hannah
A&B London Construction Services LTD
Rating: 5 out of 5
Extension Builder in Clerkenwell
With experience and knowledge of the industry of more than 10 years duration, we have developed a reputation for providing both a high quality and friendly service. When you need help with any type of building work, Domestic or Commercial, please contact us anytime we will be happy to help.
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Latest review:
Restoration & Refurbishment- 29 Mar 2018
A pleasure to deal with . Agim and his team worked hard to a very good standard.They often worked later than i would expect so that they were ready to move onto the next stage of the job the following day. Agim was very knowledgeable of all building regulations and was ready to offer me solutions when they were needed. All his team were courteous , polite and also knowledgeable. This was the first time I have used A&B but I would have no hesitation of using them again and recommending them to others.
A2Z Property Improvement Ltd
Rating: 4.9 out of 5
Extension Builder in Clerkenwell
A well establish Building Contractor with 24years experience, Dealing with all kind of Home Extensions, Loft Conversions, basement conversion, out buildings, electrical wiring, plumbing & boiler fitting, tiling, kitchen and bathroom fitting, roofing, K rendering, property refurbishment and decorating
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Latest review:
Extensions- 10 Apr 2021
Although I posted for a kitchen extension quote I decided that I would proceed with this at a later date. I did have a lot of other building work such as chimney removal that was undertaken by A2Z Property Improvement Limited. I am happy with the the work that was carried out. I'll certainly be reaching out to A2Z again for the extension once I'm ready to proceed. I would definitely recommend this company.
Build tech
Rating: 5 out of 5
Extension Builder in Clerkenwell
Welcome to our add. Professional Building Company Professional experts in all types of construction have worked on Victorian and Georgian properties, giving them a slick new light and converting them into modern and contemporary living spaces. Expect transparent open-book pricing, quality workmanship, and 24/7 communication.
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Latest review:
Extensions- 28 May 2019
Ayaz is a professional and a really nice man.
Alex Pana
Rating: 5 out of 5
Extension Builder in Clerkenwell
My name is Alex, I work in construction field for more then 13 years. My experience start with my first job, I have experience from big construction sites, indoors jobs, building houses, small jobs as painting, plastering, changind windows etc. I take on lots of different type's of job. Bricklaying, paving, garden jobs, rendering, decking, concrete slabs, plastering, plasterboard, painting decorating, tiles, floors, hang/ fix doors, wallpaper, etc. It varies from small to big jobs.
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Latest review:
Handyman- 24 Jan 2019
Alex did a brilliant job at a very good price. Nice, friendly guy who knows his stuff, I can definitely recommend him.
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. ⭐️⭐️⭐️⭐️⭐️
Agnuss Construction Ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
We are a construction company that operates in the local area mostly, but we can also cover all the other areas of Greater London. Our Services include Extensions, Loft Conversions, Refurbishments, and basically all the aspects of building work. We specialise in residential and business projects.
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Latest review:
Agnuss Construction carried out and completed our house renovation, kitchen extension and loft extension successfully. Elio and his father, Mario were very communicative throughout and very reliable. The works were carried out on time and on budget. I would be happy to recommend Agnuss Construction and use them again in the future.
Jozeph
Rating: 5 out of 5
Extension Builder in Clerkenwell
I am a professional and reliable tradesman who works to very high standards, these standards have helped me to build up an excellent reputation with regards to all work that I have carried out. Please request a quote through mybuilder.com for a free and honest estimate
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Latest review:
Handyman- 3 Oct 2015
Fast, efficient, friendly builder. Very skilful, quality work at a reasonable price. Couldn't be happier. Fully recommend Jozeph. Emma & Emanuel
HCI CARPENTRY & CONSTRUCTION LTD
Rating: 4.9 out of 5
Extension Builder in Clerkenwell
HCI CARPENTRY & CONSTRUCTION LTD has a proven track record of innovative designs, effective problem solving and attention to detail and our goal is to meet and exceed the expectations of every customer. We take on all types of jobs from small domestic work to larger commercial projects, all carried out to the highest standards, and at very competitive prices.
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Latest review:
Carpentry- 9 Oct 2024
The guys did a great job installing our bannisters and cleaned up afterwards which was brilliant! Will be using them again if we need anymore joinery.
CONSTA Construction Limited
Rating: 4.6 out of 5
Extension Builder in Clerkenwell
CONSTA Ltd - small construction company based in London, and characterises in flexibility to complete various jobs . There is list of different small or awkward completed jobs in our portfolio as well as more significant projects as loft conversions, extensions, full house reconstructions, new build and Passive House construction as well.
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Latest review:
Extensions- 29 Aug 2021
Communicated well at the start with reasonable cost. work was done well but the finishing was not so great as expected. The end cost was very expensive. Charged by the hour, the team were very slow which was upsetting to see me pay for time where they sat around not doing much. Ensure to agree fixed price. Communication after job is poor, double glazing has warranty which now not being able to communicate with kostas having to pay to get things done that should be covered in warranty. Central heating give huge problems. Do not use for big jobs

4.1

Top rated Extension Builders

Our Extension Builders in Clerkenwell, are rated 4.1 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.