Extension Builders in Barnet

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (15 reviews)

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Some of our top rated extension builders in Barnet

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VGM construction ltd
No reviews yet
Extension Builder in Barnet
We are different from other construction companies as we provide timely and unique services to our respected clients. We see to it that our orders reach our clients on time and allow time to negotiate a fair price We as a construction company, strive hard to stand up to the expectations of our clients, and if you choose us, we will endeavour to give you the best service as possible. If we make a mistake, we will own up and rectify the error at no cost to the customer
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Ziaka Construction
No reviews yet
Extension Builder in Barnet
With many happy and returning customers over the last 6 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 team of trusted colleagues. 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.
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London Premium Builders
Rating: 4.5 out of 5
Extension Builder in Barnet
London Premium Builders Ltd Covering London & Essex With 15+ years of experience, our expert team delivers top-quality work across all types of building and renovation projects. ✨ Our Services Include: Kitchens • Bathrooms • Roofing • Flooring • Painting • Extensions • Loft Conversions • Brickwork • Fencing • Driveways • Damp Proofing • Plastering • Tiling • And More! ✅ Free Estimates ✅ All Our Work Is Guaranteed 📍 Based in London & Essex 📞 Contact us today for your free quote!
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Latest review:
Bathroom Fitting- 26 Mar 2026
They worked quickly but I had to clean a lot of the shower afterwards. I'm not certain that I wasn't overcharged as I didn't get any receipts and had to buy the shower tray and glass doors myself.
Ideal Insolation Ltd
No reviews yet
Extension Builder in Barnet
"With over 20 years of experience in the construction industry, our family-owned business prides itself on delivering high-quality projects across Europe. Our expertise spans Greece, Germany, and Bulgaria, where we have successfully completed numerous construction projects. We believe in the importance of tradition, and our knowledge is passed down from generation to generation. Our passion for what we do drives us to achieve perfection in every build."
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Fastway Constructions Limited
Rating: 5 out of 5
Extension Builder in Barnet
At Fastway Constructions, we are dedicated to redefining the construction industry through sustainable practices and innovative solutions. Based in the United Kingdom, we pride ourselves on delivering exceptional quality and reliability across four key sectors: Residential Constructions, Commercial Constructions, Industrial Constructions, and Renovation & Remodelling Here at Fastway all of our employees are fully qualified, skilled and very experienced building contractors that have worked on hundreds of projects over the years resulting in 100% client satisfaction, full job completion on time, and always well within budget. All employees hold cscs cards for their relevant trades along with health and safety certificates and first aid for a competent safe worksite at all times. We are a building contractor with a professional approach to all our projects. We offer a seamless and multi-trade service, for all domestic projects from new builds, extensions, loft conversion, renovation to fully finished houses, all tailored to meet our clients’ specific requirements.
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Latest review:
Plumbing- 1 Aug 2025
Jitin did a good job in finding a solution to the leak in the washing machine drainage pipe. He used his experience in problem solving and fixed the issue. Thanks Jitin
Home & Office Improvements Ltd
Rating: 5 out of 5
Extension Builder in Barnet
We are a long established family business based in Greenford, Ealing. We cover all aspects of Plumbing & Heating, we also install all types of boilers, boiler repairs, boiler breakdown, boiler service, central heating systems, AGA-Rayburn cookers repair & Service, quality kitchens and bathrooms.
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Latest review:
Arrived on time. Very professional. Gave consultation and did the job in good time.
RS building
Rating: 5 out of 5
Extension Builder in Barnet
We’re a highly professional team with over 20 years’ experience in extensions, loft conversions, high-end renovations, new builds, and property conversions. We deliver top-quality work on time and within budget. Our rates are among the most competitive in the UK at £180 per day per man + 10% OHP. With all specialist trades under one umbrella, we can handle projects of any size smoothly—from £20k up to £2m. Happy to discuss your project further
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Latest review:
RS Building successfully delivered two full back-to-brick refurbishments and a new-build development for us in Greenwich, including demolition and construction of four new dwellings. Their level of workmanship is exceptional, and their attention to detail is second to none. As experienced property developers, we’ve worked with many contractors—but RS Building stand out for their reliability, quality, and professionalism. We have since recommended them to several colleagues, all of whom have been equally impressed. Our only regret is not finding them sooner. We look forward to working with them again on future projects.
Acme Lofts & Extensions Ltd
No reviews yet
Extension Builder in Barnet
Acme Lofts & Extensions specialises in the construction of Loft Conversions & Domestic Extensions. Based in Enfield, covering Greater London & Herts, we have over 30yrs experience & expertise in this industry. Our team of skilled tradesmen, qualified technical engineers, professional architects & surveyors will create the highest quality & most desirable living space for your project. All work is guaranteed, insured, vetted & monitored.
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SWITCHLINESERVICES LTD
No reviews yet
Extension Builder in Barnet
I have been an electrician for 10 years employed and now i am self employed. I design, install and maintain any electrical works.
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Nick building connections ltd
No reviews yet
Extension Builder in Barnet
Almost 5 years doing lofts extensions refurbishment
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J.C WARD LIMITED
Rating: 5 out of 5
Extension Builder in Barnet
Hi, we are a family run business based in East London. We specialise in all aspects of construction. We have good tradespeople we work closely with so everything from taking a project out of the ground to all final fix and everything in between. Please get in touch if you require any further information or would just like to get some advice on your project no matter how small it may seem. Thanks, Scott
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Latest review:
Handyman- 5 Aug 2020
Scott was extremely helpful, efficient and professional. His communication was excellent and he kept me updated at every stage. A superb job - I am delighted with the work he did. I would thoroughly recommend this company to anyone. Thank you!
Bricklayer
No reviews yet
Extension Builder in Barnet
Blockwork and brickwork.
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Planetium Construction Ltd
Rating: 4.5 out of 5
Extension Builder in Barnet
Im Adrian based on South West London and surrounding area ,Planetium Construction Ltd Will be your favourite .We have a trusted, friendly and professional team of tradesman with +10 years experience. Our aim is to provide on time full property maintenance and refurbishment to a very high standard at a competitive price ensuring our customers are completely satisfied.
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Latest review:
Bathroom Fitting- 2 Jan 2025
Extremely Disappinted with Planetium Construction- I hired Planetium for a 59k renovation job. Initially, the workmanship was acceptable only because I supervised closely and had them redo substandard work multiple times. However, before the job has been complete, I discovered already a roof leak in the master bedroom, direcly under the newly renovated bathroom. Despite my repeated requests, Planetium refused to take responsiblity or fix the issue. Just telling me need additional charges for the work. Worst still, Adrian the owner, demanded I pay the final balance of 1840 before they would address the GF heating which stopped working after they installed the new controller. When I reasonably refused to pay before they complete the job , Adrian swore at me over the phone the most offensive language. Furthermore, they promised to replace a new Miele microwave for the one they damaged during installation but now just walked away. Leaving me unresolved issues and additional repair cost!
Dragan Construct
No reviews yet
Extension Builder in Barnet
We are 2 Brothers at the hearth of a construction Company experienced in Extensions, Conversions and House Refurbishment
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JT builders
No reviews yet
Extension Builder in Barnet
I have a wealth of experience in the building industry 25+ years. My commitment is to deliver top notch work, aiming for 100% client satisfaction. I take pride in making sure my work is consistent, and have built great customer relations over the years. I look forward to assisting you in your building projects/ inquiries.
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PMBuilding Ltd
Rating: 5 out of 5
Extension Builder in Barnet
We are a family run business of over 15 years. We believe in no “I” in the team and you will certainly spot it easily, if you ever have an opportunity to work with us. We are a building company that does it all differently. Meet us and find out for yourself!
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Latest review:
Extensions- 29 Jan 2015
PM Building epitomise what a modern day, professional building firm should aspire to be. Transparent pricing, a friendly team working 6, sometimes 7 days a week to get the job done quickly, an eye for detail and very high standard of final finish. All comms and the overall work is run through Bart, who answers to phone, text or email quickly and frequently outside normal working hours. This is ideal if you work during the day and cannot be around to oversee things directly. We also got PM Building to make us a bespoke kitchen, again very high quality and millimetre perfect. If I had to find some negatives, they are not the cheapest company you could find, but there again you get what you pay for; also, we developed a few issues with some retaining walls in the garden, however, they returned when I contacted them long after the work had finished and fixed them! All in all, an excellent, honest and professional company to deal with. I would, and have, recommended them to friends...nuff said.

3.9

Top rated Extension Builders

Our Extension Builders in Barnet, are rated 3.9 out of 5 based on 15 reviews from customers like you.

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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 Barnet?

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 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 who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Barnet?

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

Find extension builders in Barnet with MyBuilder

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

Step 2: Compare different extension builders in Barnet

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

Step 3: Hire Barnet extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Barnet, 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 extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Barnet extension builder before hiring?

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

An extension builder in Barnet 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 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?

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 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 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

Can an extension builder in Barnet help with planning permission?

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

Many Barnet 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 help with materials and finishes?

Yes, most extension builders in Barnet 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.