Extension Builders in Barnet, Greater London

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (17 reviews)

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Some of our top rated extension builders in Barnet, Greater London

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Kegel LTD
Rating: 5 out of 5
Extension Builder in Barnet, Greater London
Hello 🧸we are the Kegel team of 4+ guys easy going and like what we are doing - Block , brick work , foundations , drain works , roofing . New house , extensions , garden walls, restorations old houses , re pointing , GRC clading , GRC bands , stone works , re pointing More them 15 years on large constructions. We working quick , without complain but if need to do a push We can get more lads as much as need it to finish on time. We got Electrican , Plumbers , carpentry available as well.
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Latest review:
Bricklaying- 19 Nov 2019
Alex is a polite professional who knows his job. He did a good job for me. I can recommend him.
pdb building service limited
No reviews yet
Extension Builder in Barnet, Greater London
hi I am builder. I do all the building work. I had a 22year experience. We are a building company covering all aspects of construction and landscaping with qualified and experienced builders. We pride ourselves on offering professional services that are convenient to customers and price competitive .
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Earthmates Construction Limited
Rating: 5 out of 5
Extension Builder in Barnet, Greater London
Introducing Earthmates: Your trusted partner for all property needs. We offer comprehensive services in new builds, extensions, landscaping, fencing, loft conversions, and complete property management. Whether you’re planning to build from the ground up, expand your existing space, or enhance your outdoor area, Earthmates delivers expert craftsmanship and tailored solutions to transform your property vision into reality. Let us help you create, renovate, and manage with quality and care at every step.
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Latest review:
Landscaping- 20 Sep 2025
Earthmates absolutely transformed my garden. They did an amazing job so I hired them again to redo my driveway. I would definitely recommend them an would hire them again an again. They were a good bunch of guys friendly and professional. If you want a job done right hire Earthmates Construction!
Redmark Contractors Limited
Rating: 5 out of 5
Extension Builder in Barnet, Greater London
Redmark Contractors Limited have over 10 years experience, and with many years experience in the building trade. We are a professional team are reliable builders operating in London and the wider area. We take great pride in all work which we undertake, taking great care to make sure that our client’s needs are met in a meticulous and professional manner.
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Latest review:
Extensions- 27 May 2025
They helped build me two houses and were always putting their best foot forwards. Bhupinder and his team are lovely, and are now like family to me. They have a bright future ahead for themselves and for the clients they look after.
Keiss
Rating: 4.5 out of 5
Extension Builder in Barnet, Greater London
Experienced and reliable carpenter and builder offering exceptional craftsmanship Whether it's creating custom furniture or managing construction projects, I prioritise attention to detail and exceeding expectations.. Dedicated to delivering high-quality work on-time and within budget. Strong communication skills, attention to detail, and a commitment to customer satisfaction. Let's discuss your project and bring your vision to life.
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Latest review:
Joinery & Cabinet Making- 17 Feb 2025
Keiss took the deposit and did not respond to my call after promising that he will come today to fix my wardrobe.
MJ Build and Management Ltd
No reviews yet
Extension Builder in Barnet, Greater London
Construction company. Complete building services.
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Gluh Inc Ltd
No reviews yet
Extension Builder in Barnet, Greater London
GLÜH INC LTD is a specialist facade and cladding contractor based in Essex, operating across the UK. We work with principal contractors, developers, and housing associations to deliver expert facade installation, cladding compliance, fire remediation, and site support services. Our core services include: - Labour-Only Facade Installation (curtain wall, rainscreen, SFS systems) - Labour & Materials Package (supply and fix, single-point delivery) - Cladding Compliance & Fire Remediation (post-Grenfell building safety regulations) - Site Support Services (facade managers, site supervisors, H&S oversight) - Defect & Snag Surveys (snagging, inspections, close-out reports) All operatives are CSCS-certified. We provide full RAMS documentation and work in full compliance with UK building safety regulations. We pride ourselves on quality workmanship, professional site management, and transparent communication from enquiry through to project completion.
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Multitown Construction ltd
No reviews yet
Extension Builder in Barnet, Greater London
Been building for 63 years came from bid construction in 1999 into domestic work have done many big jobs all my people are multi trade and we do every job from start to finish we never leave till it is complete
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A D FOD Construct
No reviews yet
Extension Builder in Barnet, Greater London
Hi, my name is Adrian, i am a highly skilled builder. I am reliable, honest and hard working. I don’t waste time and my quotes are competitive. Don’t hesitate to contact me!
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Samz Construction Services ltd
Rating: 5 out of 5
Extension Builder in Barnet, Greater London
We are a small construction firm aiming to provide high quality work. We do new built 'conversion, loft and extension, Refurbishment and all kind of building works. We can manage the building job from start to finish and help the clients with planning, party wall and structural drawings.
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Latest review:
Extensions- 4 Dec 2023
Happy with the quality of work and team was very friendly, everyday leaving the house livable for me and my wife while work was ongoing. Sohail offered good advice throughout the project and ended with shell completed after 8 weeks. Definitely reccomend getting a digger for excavation as we started building walls after 6 days, very fast! There were some minor delays as there are multiple projects going on in parallel, fitting in with timelines which is understandable as the team is very experienced and in high demand. Snag fixes were done promptly and all work signed off with building control. I would happily work with Sohail & team again, they have left the job with another satisfied customer - I think they turned out to be the best people to do the job, highly reccomend!
Zen Construction
No reviews yet
Extension Builder in Barnet, Greater London
I’ve been working in the construction and property improvement industry for over 12 years, gaining hands-on experience across a range of jobs from full house renovations to smaller repair and maintenance projects. I’m based in London and cover surrounding areas. I specialise in Demolition, Carpentry, Bricklaying, Laminate Flooring, Extensions, Driveways, with a strong eye for detail, reliable workmanship, and a focus on delivering high-quality results. I take pride in being honest, hardworking, and easy to communicate with—clients know they can trust me to get the job done right the first time. If you’re looking for someone dependable, skilled, and committed to quality, I’m ready to help.
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Sukhvir
No reviews yet
Extension Builder in Barnet, Greater London
Bathroom,tiles,plaster, extension, new build,
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PD Construction Services Limited
No reviews yet
Extension Builder in Barnet, Greater London
We deliver high quality domestic refurbishment services in all of London and the surrounding areas. We undertake all building work include: House Extensions and Conservatories Loft Conversions Full House Refurbishment General Building Joinery and Carpentry Painting, decorating Bathroom remodeling Kitchen refurbishment Foundations Garage conversions Residential Renovation Electrics and Plumbing Patios, paving and fencing
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Mk&s construction ltd
Rating: 4.4 out of 5
Extension Builder in Barnet, Greater London
we do refurbishment of bathroom,extensions ,tiling and kitchen . A good team which provide to customer good work in relevant frame of time .have a 10 year experience in a building field .
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Latest review:
Bathroom Fitting- 28 Oct 2024
Not many builders want to complete a job started by someone else. They took the job and more or less completed it.... I wasn't there to supervise so there are some finishes that could have used more polish and the mirror that was hung does not feel stable. However, they did install the toilet, sink and consolidated the pipes outside.
Plustudios LTD
No reviews yet
Extension Builder in Barnet, Greater London
Space Up is a trusted general contracting firm specializing in residential construction projects. With a focus on excellence and customer satisfaction, we deliver high-quality results on time and within budget. Our experienced team works closely with clients, prioritizing clear communication and attention to detail to ensure every project exceeds expectations. From new construction to renovations, count on Space Up for superior craftsmanship and reliable service.
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Home Empower
Rating: 4.8 out of 5
Extension Builder in Barnet, Greater London
Our construction company specialises in the professional erection of structures of any complexity, Strictly adhering to provided designs. We guarantee high quality construction, timely delivery, and meticulous attention to detail at every stage of project!
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Latest review:
Bricklaying- 23 May 2025
Completed a job for a driveway wall, but was very rude, unprofessional and aggressive when asked a quote for a follow-up job. Conversation attached.

Top rated Extension Builders

Our Extension Builders in Barnet, Greater London, are rated 4 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 Barnet, Greater London?

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 Barnet, Greater London 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 Barnet, Greater London who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Barnet, Greater London?

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

Find extension builders in Barnet, Greater London with MyBuilder

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

Step 2: Compare different extension builders in Barnet, Greater London

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

Step 3: Hire Barnet, Greater London extension builders with confidence

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

Barnet, Greater London extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Barnet, Greater London extension builder before hiring?

Before hiring an extension builder in Barnet, Greater London or extension building company in Barnet, Greater London, 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 Barnet, Greater London?

An extension builder in Barnet, Greater London 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 Barnet, Greater London 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 Barnet, Greater London?

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 Barnet, Greater London 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 Barnet, Greater London 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 Barnet, Greater London

Can an extension builder in Barnet, Greater London help with planning permission?

Yes, many extension builders in Barnet, Greater London 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 Barnet, Greater London handle everything from design to construction?

Many Barnet, Greater London 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 Barnet, Greater London help with materials and finishes?

Yes, most extension builders in Barnet, Greater London 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.