Extension Builders in Barnet

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (16 reviews)

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Some of our top rated extension builders in Barnet

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PIKA 3D GROUP LTD
No reviews yet
Extension Builder in Barnet
PIKA GROUP is a trusted, family-run business specializing in Civil Engineering, Groundworks, and a wide range of home improvement services. With years of experience and a commitment to excellence, we offer personalized solutions for your construction and renovation needs. From civil engineering projects and groundwork to stunning interior design and building work, we handle it all. Our expertise extends to bathroom and kitchen refurbishments, as well as bedroom and living room makeovers, ensuring that every aspect of your home is built to your vision and high standards. We also provide professional landscaping services to enhance the exterior of your property, creating beautiful and functional outdoor spaces. Whether you’re planning a small renovation or a large-scale construction project, PIKA GROUP delivers quality craftsmanship, attention to detail, and a dedicated approach that only a family business can offer.
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Gpevolution
No reviews yet
Extension Builder in Barnet
Hi,my name is George.and I have over 18 years experience in bathroom fitted, kitchen fitted and many more.we do profesional jobs, with acceptable rate. With as yours gonna be in God hands.
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G&R Carpentry
Rating: 5 out of 5
Extension Builder in Barnet
We are a small business that takes on most aspects of building work and have the correct trades for the jobs that are required .
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Latest review:
Carpentry- 15 Feb 2018
Very pleased with the end result. The radiator cover Gary made, matched perfectly the others I had and fitted perfectly, great finish too
Liviu
No reviews yet
Extension Builder in Barnet
My name is Liviu. I am an honest and serious builder, I have 20 years of experience, I always like to do quality work and treat customers with respect. Thank you
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St albans plastering ltd
Rating: 5 out of 5
Extension Builder in Barnet
Hello, I have over 10 years experience in building and plastering. I undertake all types of plastering, rendering and refurbishment jobs. In the last year I have done lofts conversions, garage conversions, sky lights, media walls and much more. I have a good team who are reliable and professional. Please shortlist me so that I can provide you with a free quote. I am also happy to provide you with photos of my work.
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Latest review:
Conversions - General- 13 Dec 2018
Tony was superb. Very professional in quoting for the job, discussing different options and keeping us informed all the way through of progress and costs. The quality of the work is very high and the job was done in really good time. Highly recommended.
Michael O'Carroll
No reviews yet
Extension Builder in Barnet
Bricklayer with over 20 years experience in all aspects of building .
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Blueprint Developments Limited
Rating: 4.2 out of 5
Extension Builder in Barnet
Welcome to Blueprint Builders, where your dream space becomes a reality. Nestled in the heart of London, our team is at the forefront of design and construction innovation. We specialize in transforming spaces into luxurious living experiences, with services that include: - Elegant House Extensions - Meticulous Loft Conversions - Comprehensive Renovations - Bespoke New Builds And a wide spectrum of commercial and domestic building projects designed with your luxury and comfort in mind. At Blueprint Builders, your satisfaction is not just a goal—it's our promise. We're dedicated to bringing smiles to our clients faces through meticulous attention to detail, unparalleled craftsmanship, and a seamless client experience from start to finish. Stay connected with our journey of transformation on Instagram @blueprintbuilder. Follow us for a regular dose of inspiration through updated photos of our latest projects. Dreaming of a space makeover? Don't wait any longer. Contact us today for a complimentary site visit and a personalized quote. Let's make your vision a living, breathing reality.
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Latest review:
Extensions- 19 Aug 2026
We paid for the build finished in Sept. 2025. Our concern is the foundations. The drawings specified about 1.8m depth and anti-heave boards due to clay and trees. The builder had not properly checked the drawings, then charged substantial extra for the depth. We paid, but the boards were not installed, and our photos and videos appear to show much of the foundation at about 1m. A replacement Building Controller declined to proceed without evidence of the boards. The patio, including £1,700 extension, was laid without proper excavation or a mechanically compacted base. Some tiles are loose and render is failing. Other faults include uneven floors and walls, falling plaster, catching doors, cladding gaps, poor electrical fitting, missing vents, a possible leak and unfinished items. Attendance was intermittent—about three weeks over two months—and the work felt rushed around other jobs. Our neighbour witnessed two workers urinating behind the shed. We cannot recommend this company...
DESIGN LAYOUT & BUILD LIMITED
Rating: 5 out of 5
Extension Builder in Barnet
Design Layout and Build Ltd wants to offer its customers quality work for fair prices. For any project we provide a minimum of 12 months warranty. For this we always use quality materials and skilled craftsmen. We are polite, friendly and have great experience in our trades. Our team is eager to complete your projects!
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Latest review:
Carpentry- 12 Sep 2015
We were extremely pleased with Daniel and his colleague's work. Daniel gave me a fully costed quote promptly, answered emails quickly and was knowledgeable about what needed to be done. They were punctual, polite and very hardworking. The work was done to a high standard and I would not hesitate in recommending them to others.
Hasanozdemir
No reviews yet
Extension Builder in Barnet
I have been working in the construction industry for 7 years, and I do painting, repair, parquet ,laminate flooring, partitions, loft construction, garden works, pavement, digging, demolition, fencing etc.
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RAQS Investment Limited
No reviews yet
Extension Builder in Barnet
We carry out all types of building works for both residential and commercial properties, including loft conversations, extension, refurbishment, general maintenance, painting & decorating, carpentry, plumbing & central heating, electrical works, tiling. Our team comprises of professional builders, who have been carrying out the work in & around Greater London for the past two decades. We also have a branch office in East London and we cover East London as well.
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Jamil
No reviews yet
Extension Builder in Barnet
Hi my name is Jamil saleh I am a painter working at ANQ Build and design I have over 2 years experience.
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LONDAMEXP
No reviews yet
Extension Builder in Barnet
Established by industry experts, LONDAMEXP Construction is a London based home refurbishment business. LONDAMEXP Construction combines more than a decade of experience and expertise to provide commendable refurbishment services. We have been in service since the past 15 years in the UK and NL!
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BFUK
No reviews yet
Extension Builder in Barnet
Hello and welcome to BFUK Building Services, If you are thinking of renovating your home ,BFUK Building Services can provide building services of the highest standard at competitive prices. We always respect the customers wishes and work with them to achieve their results. 1.Electrician 2.Plumber 3.Kitchen &Bathroom 4.Brick Work 5.Driveway Paver 6.Painter & Decorator 7.Landscape Gardener 8.Demolition Contractor 9.interior and exterior refurbishments 10.Extension &Loft Conversion
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Newstar Building Services Ltd
Rating: 4.9 out of 5
Extension Builder in Barnet
HI my name is Bill and I run a building company. All our work is base on recommendations costumers We work all around London.
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Latest review:
Hard Flooring- 22 Oct 2025
Enea did an incredible job, and we’re beyond happy with the final result. He was very accommodating, helped us choose the right tone of varnish beforehand, and kept us updated throughout the day by sending pictures of his progress (as we were both at work). Enea is trustworthy, and even though we didn’t have the chance to meet him in person, he left the flat securely, taking care of our keys and door. We highly recommend Enea!
G&j
No reviews yet
Extension Builder in Barnet
I started my career as decorator in 2019 ,my goal is client satisfaction with a fair price and maintain the quality of my work which I intended to continue.
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Golden Eagle roofing and building contractors
No reviews yet
Extension Builder in Barnet
Golden Eagle Roofing and Building Contractors prides itself on integrity, transparency, and a professional approach to every project, no matter the size. Our team of skilled professionals works closely with clients from the initial concept and planning stages to final execution, ensuring a seamless and stress-free construction process. We use only the finest materials and latest techniques to guarantee durable, high-quality results that stand the test of time. Why Choose Us? Experienced Professionals: Years of industry experience and a wealth of knowledge brought to every project. Quality Craftsmanship: A dedication to upholding the highest standards of workmanship and using quality materials. Customer-Focused Approach: Committed to understanding unique requirements and exceeding expectations with open communication and transparency. Licensed & Insured: For your complete peace of mind, all work is performed by a properly insured and licensed team. For your next roofing or building project, contact Golden Eagle Roofing and Building Contractors to discuss your requirements and discover the difference that quality and dedication can make.
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3.9

Top rated Extension Builders

Our Extension Builders in Barnet, are rated 3.9 out of 5 based on 16 reviews from customers like you.

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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.