Extension Builders in Clerkenwell

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

Easily find verified Clerkenwell Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Clerkenwell.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Clerkenwell

3517 Results

Sort by:

MA DESIGN ENGINEERS
No reviews yet
Extension Builder in Clerkenwell
With over 10 years of experience in structural engineering, MA Design Engineers specialises in providing tailored solutions for residential and commercial projects. Our expertise includes new build designs, residential refurbishments, and structural alterations. We are committed to delivering practical, efficient, and visually appealing structural designs that meet your project's unique needs. We offer a comprehensive range of services, including structural design calculations, general arrangement drawings, and detailed reports for pricing and building regulations approval. We also provide structural surveys and assessments for wall removals, alterations, and building defects, such as subsidence and cracking. At MA Design Engineers, we work closely with architects, contractors, and clients to ensure seamless integration of our designs into your project. We can assist throughout all phases of construction, from initial concepts to on-site inspections and construction support. Our goal is to provide reliable, cost-effective, and elegant structural solutions that bring your vision to life. Contact us to discuss your project today!
Get in touch
Expand & Build Ltd
No reviews yet
Extension Builder in Clerkenwell
Welcome to Expand & Build, your partner in bringing your dream home to life. With a focus on quality craftmanship and customer satisfaction, we specialise in creating homes of the future through conversion, new builds, extensions and renovations. With over a decade of experience collaborating with commercial architects and developers in London and beyond, Expand & Build is dedicated to putting your needs first. We understand your home is more than just a structure - it is a reflection of your unique vision and lifestyle. That's why we work closely with you and the stakeholders to ensure your project is completed to the highest standards, on time and within budget. We're excited to continue growing our portfolio of residential and commercial projects, driven by our passion for quality craftsmanship and our commitment to customer satisfaction. Choose Expand & Build for your next project and experience the difference that dedication, expertise, and attention to detail can make. Your dream home awaits – let's build it together.
Get in touch
Alin Dragos
Rating: 5 out of 5
Extension Builder in Clerkenwell
Both customers that have long-term and short-term jobs are welcome to contact me. I am very organised and punctual, I can cope with working under pressure, being serious and flexible in the same time. Therefore I can make a schedule that suits both the customers and myself.
Get in touch
Latest review:
Hard Flooring- 7 Nov 2017
I hired Alin to install laminate flooring within a quick time frame. Alin was quick at replying and scheduling in a date. He gave good advice to suit our needs and worked fast and efficient. He has always been professional at my home. Alin got all the work done within one day which I was delighted with. We are very happy and confident in him so we have hired him back to do many other jobs in our home.
House Renovation Services London LTD
No reviews yet
Extension Builder in Clerkenwell
I am a London based cont actor with over 10 years experience in property renovation and construction. I specialise in delivering high quality building work, from full refurbishments to extensions and new builds. I pride myself on reliable service, clear communication, and excellent workmanship.
Get in touch
The English Carpentry and Building Services
Rating: 5 out of 5
Extension Builder in Clerkenwell
We are a small company with more than 18 Years experience in the country. We are specialists in all carpentry and joinery area,but also have done many extensions and conversions.References and certificates supplied.
Get in touch
Latest review:
Building of an extension involving carpentry, door hanging and furniture (handles, locks, etc), skirting, plaster boarding, flooring. He also fitted my sliding wardrobes from scratch - cut all the MDF for the shelfs, doors and walls. Plamen is very reliable, professional, tidy, precise and has an eye for detail. He also has vast knowledge of construction methods. I have recommended him to all my friends and relatives.
Portclean Services Solutions Ltd
No reviews yet
Extension Builder in Clerkenwell
At Portclean, we specialize in a wide range of cleaning and professional services to meet your needs. Our offerings include: Office Cleaning: Our expert team provides consistent, top-notch cleaning services to keep your office spaces immaculate. We tailor our approach to fit your schedule and requirements, ensuring a clean and productive work environment. End-of-Tenancy Cleaning: Experience the power of our thorough deep cleaning services. Whether you need a fresh start in a new space or want to leave your rental property spotless, we deliver exceptional results that exceed expectations. Builders Cleaning and Handyman Services: Trust our skilled professionals to handle all aspects of post-construction cleaning and general maintenance. We tackle debris removal, dusting, repairs, and more, providing comprehensive solutions for a pristine workspace. With years of 15 experience, a dedication to quality, and a commitment to customer satisfaction, Portclean is the trusted choice for all your cleaning and handyman needs. Contact us today and discover how we can elevate your workspace with our unique and professional service
Get in touch
Lombardo Constructions Ltd.
No reviews yet
Extension Builder in Clerkenwell
Our target is the full client satisfaction. Lombardo Construction has been trading for more than thirty years in the construction and restoration market. We have been always oriented towards the research and the innovation during design and construction phases with a precise care for details and quality control process. The company is able to offer to the client the know how in restoration, renovation and new built works for the required M/E services along with the statutory certification.
Get in touch
Damian Construction
No reviews yet
Extension Builder in Clerkenwell
We are experienced building company with over 20 years of experience specialising in high quality, luxury renovations and buildings extension projects, serving all London private and commercial home owners. Using only best materials available, together with our innovate designs with traditional values and workmanship, we make sure that we offer the highest build quality at an affordable price.
Get in touch
Erald Gjoka
No reviews yet
Extension Builder in Clerkenwell
We're a teammate of three people in two different fields; electrican and fire security and handyman/painter and decorations We have been working for 5 years with different builders and contractors and private clients We Provide the following service General Building New Building Loft Conversions Roofing Extensions Painting and decorating All electrical works Fire alarm system Entry phones system Access control Cctv
Get in touch
BOTNARI CONSTRUCTION
Rating: 4.7 out of 5
Extension Builder in Clerkenwell
We at BOTNARI CONSTRUCTION provide a service of maximum quality and client satisfaction . Having over 25 years experience in the field we have completed jobs big and small to the best standard .
Get in touch
Latest review:
Garden Maintenance- 19 May 2026
Fantastic service . Very good job
Handy Man - Radek help you
Rating: 4.7 out of 5
Extension Builder in Clerkenwell
There is always something that needs doing!
Get in touch
Latest review:
Restoration & Refurbishment- 17 Oct 2019
Radek is a friendly hardworking young tradesman,he turned as he agreed and completed the various jobs I originally asked him to do, my wife & I were so p[eased with his work we asked him to build an extension garden room for us.he has nearly finished that and we are very pleased not just with the quality but also the cost.we would not hesitate in using him again or recommending him to others.
P&M Property Renovation ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
P&M Property Renovation Ltd is the company specialised in house and flat renovations, carpentry, flooring, kitchens, bathrooms, tiling, painting & decorating, loft, and extensions.
Get in touch
Latest review:
Carpentry- 12 Mar 2022
A fantastic experience, pawel done a fantastic job highly professional and attention to detail ,on time protected all the floors prior to work , lots of helpful advise and at a really competitive price beautiful media wall created all in a day!👍
MJV Extrem Construction Ltd
Rating: 5 out of 5
Extension Builder in Clerkenwell
MJV Extrem Construction specializes in refurbishments, extensions, loft conversions, new builds and complicated structural alterations.We are ready to help with any of electrical,plumbing and Gas desigh and installations included all aspect of different heating systems and UFH systems. We also undertake smaller projects like kitchen/bathroom Installation’s ,gardening and all your property needs from A to Z. Fully insured. Free quotations
Get in touch
Latest review:
Plastering- 20 Jun 2025
Rerendering, repairing and redecorating front of house. Vic and his team were excellent. Highly skilled, respectful and trustworthy. Job was completed to a very high standard at a fair price. Couldn’t be happier. Will definitely use him again and would not hesitate to recommend him to others.
Home improvement
Rating: 3.7 out of 5
Extension Builder in Clerkenwell
“Reliable handyman with 7+ years of experience in flooring, plastering, and general home repairs. I take pride in clean work, clear communication, and finishing jobs on time. Available for small to medium projects — no job too small!
Get in touch
Latest review:
Handyman- 5 Jun 2026
Shere was amazing. He was very quick and professional, and did a very good job. Was very happy with the result. Would definitely hire again
MLCC
Rating: 5 out of 5
Extension Builder in Clerkenwell
We offer quality works at competitive prices. We are a small team of professional builders with over 12 years of construction experience. Whether you are looking for painting a room or bathroom refurbishment or building a new extension - we can take care of it all. Please contact us today for a free no-obligation quote.
Get in touch
Latest review:
Painting & Decorating- 27 Apr 2018
Claudiu and his team did an excellent job renovating our 2 bed flat in Bushey. He did a great job on the laminate flooring in particular. Installed coving, skirting, painted walls/doors/radiators, installed new light fixtures, and assembled furniture. Will definitely work with him again. In fact, I hired him back to do our bathroom next week!
Installpro Bathrooms and Kitchens
Rating: 5 out of 5
Extension Builder in Clerkenwell
If you are looking for specialists - refurbishments, lofts and extensions, kitchen and bathroom fitters do not hesitate to contact me and I will make sure that we are the right firm. Wet rooms,Tiling, Gas Safe and heating services, Part p electrician (NICEIC) Excellent customer care and high quality, warranted service.
Get in touch
Latest review:
Extensions- 7 Feb 2020
I had installpro put an extension on my kitchen by knocking a lean-to and extending into that space, also completed insulation and roofing on the new extension and existing roof, this involved building new external walls, damp course membranes, plastering, new cast iron radiators were plumbed in, new electrical circuits and sockets, tiling, skirting, painting, new sash window fitted, new guttering and fascia and even a fitted kitchen bench was made from scaffold boards, which came out really nice. Marek was very professional and everything was done in a timely manner, no waiting around once things were agreed on. Always early every morning and working full days, even one of his team worked a Saturday to stay on the timeline. The quality of the work was very good, I was impressed with the roofing, proper insulation was used throughout, at the side of the roof behind the fascia too and new lead flashing was finished properly. The team that worked here were very clean, always using proper dust sheets and cleaning up at the end of each day. At the end of the job, final touch ups were made after consultation, to make sure I was happy with everything and then Marek saw that a proper cleanup happened and everything was completed on time and on budget as outlined at the beginning. I can recommend Installpro, and I will use them again for future work on my property.

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.

Quality screening

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 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.