Extension Builders in Friern Barnet

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

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

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 Friern Barnet

3240 Results

Sort by:

Toci. D Construction Ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
For more than 15 years in construction, our goal has been to provide quality on-time projects. We have many years of construction experience, having worked with a range of clients and various scales in projects. We are looking for long-lasting client relationships so we always offer high-quality work and very competitive prices
Get in touch
Latest review:
Extensions- 28 Mar 2024
Excellent service and really know how to communicate properly with clients will be using their service again
Woodlake Building Contractors
Rating: 5 out of 5
Extension Builder in Friern Barnet
About us: We are a General Building Company, established in 2000 specialising in Home Extensions, Loft Conversions and Full Home Renovations. Our workmanship and reliability are the firm standards which we have built our company reputation upon, to deliver a high quality product and value to our customers homes. We pride ourselves for having qualified tradesmen in our team who have been working together with us for many years. Our projects are delivered on time and within budget.
Get in touch
Latest review:
Carpentry- 3 Apr 2021
I am really pleased with the work woodlake have done in my flat. Gudarz and Darius have done a brilliant job. The flooring and painting is to a very high standard and it has really transformed the space. Very professional and great work ethic.
Emzy O’Neill
Rating: 5 out of 5
Extension Builder in Friern Barnet
This is a family business that has been built up primarily through word of mouth. We pride ourself on the quality of our work and providing an outstanding finish. We carry out all types of renovations, extensions and loft conversions.
Get in touch
Latest review:
Anna was very professional in her job and very up and doing. Even though she had a little baby at the time of the work but that did not deter her from doing her work well and on time.
JBS Jonay Building Services Ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
Jonay Building Services LTD has been a consistent and trustworthy Construction Company in North London since 2004.We operate all over London and surrounding areas. J.B.S undertakes a great range of works for a huge variety of clients; From residential extensions, loft conversions and renovations, to commercial landscaping and shop fitting. Whatever your project we have a solution for you.
Get in touch
Latest review:
Restoration & Refurbishment- 13 Jun 2023
This company was very professional. The work was completed on time and to a high standard. The work was also, good value for money. I would recommend JBS services to anyone seeking either home or business general refurbishment and building works.
CIF Builders
Rating: 5 out of 5
Extension Builder in Friern Barnet
We are family run business and have been in the trade since 2001. Our professional team will always give the best they can to achieve optimal results and most important for us are the finishing details and customer satisfaction. We can provide a range of different services from conversions, to extensions, bathroom and kitchen fittings and full restoration.
Get in touch
Latest review:
Extensions- 28 Mar 2021
Amazing work from CIF Builders: John and his team delivered an amazingly looking extension and were a pleasure to work with. I have no doubt I will employ them again!
O.L.T.O CONSTRUCTION Ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
we are able to undertake any work that has to do with the interior and exterior of your home. Responsibly!
Get in touch
Latest review:
They did an amazing job of our extension from initial quotation right the way through until project completion. Communicated very well and all of the team were respectful and hard working throughout each stage of the project. Would highly recommend!
Ns&sons Construction Ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
Welcome to NS & Sons Construction Ltd with over 18 years of experience, We cover all types of work from new builds to total refurbishments all at competitive prices with completion on time & to our customer's satisfaction
Get in touch
Latest review:
Extensions- 10 Nov 2019
Excellent I’m very pleased with his work and will use again in the future
CRAFTSMAN CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Friern Barnet
Welcome, and thank you for choosing us for your construction needs. We want you to feel completely comfortable and at ease when speaking with us. No question is too small or too big — we are here to listen, guide you, and support you at every step of your project. Our goal is to create a peaceful, respectful, and open environment where you can freely share your ideas, concerns, and expectations. We look forward to working with you and turning your vision into reality. Please feel free to reach out anytime. We are always happy to help.
Get in touch
Latest review:
Extensions- 3 Feb 2026
The job went perfectly. The Builders arrived on time and finished all the work in two days the work was completed to a perfect standard he even cleaned up some of the mess that previous Builders had left behind, their work. I can say without hesitation is exemplary. I would highly recommend hiring Craftsman Construction Limited
Alan Lancaster Ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
Alan Lancaster Ltd is a professional painting and decorating company dedicated to delivering high-quality finishes and exceptional service across residential and commercial projects. Based in North London, we have built a reputation for reliability, craftsmanship, and attention to detail. Our team comprises skilled tradespeople with years of experience, allowing us to offer a full suite of home improvement and refurbishment services beyond painting and decorating. Whether it's a fresh coat of paint or a complete property renovation, we handle every project with precision and professionalism.
Get in touch
Latest review:
Restoration & Refurbishment- 18 May 2026
William and his team did a great job of redecorating our 4 bed period property inside and out. William gave a detailed quote which enabled us to select or deselect some items and know the relevant cost. There were some minor snags that required extra plastering and repointing all handled with ease and no fuss. The communications were good and the team were hard working and courteous. I would not hesitate to use William again.
Danny construction
Rating: 5 out of 5
Extension Builder in Friern Barnet
I have over 20years of experience in window fitting , during which I've gained experience and always worked on mastering my skills in installation, repair and customer satisfaction. I enjoy doing this job both independently and as part of a team( have worked for different companies before). I'm committed to meeting deadlines and delivering quality workmanship on every project and exceeding customer expectations.
Get in touch
Latest review:
Windows & Doors (uPVC & Metal)- 9 Feb 2025
Excellent work, very professional, good price. I would use him again. Great communication and I was very pleased he was available the next day.
UCSCONSTRUCTION & DAMPROOFING SERVICES
Rating: 5 out of 5
Extension Builder in Friern Barnet
My work involves all aspects of construction, renovations, internal & external works & structural alterations. I have been in this industry for 25yrs+. Working along side me I have both architects & structural engineers which allows UCS CONSTRUCTION to offer a complete package within the team, We operate in most parts of the london areas. As the team head & owner of UCS we are fully qualified to offer all necessary gas/elec certification & operate with a £5m liability insurance cover.
Get in touch
Latest review:
Kitchen Fitting- 31 May 2021
We were thrilled with the service from UCS Construction. Richard was efficient, considerate and professional throughout the planning and the execution of this job. He consulted us so we agreed on exactly what we wanted and went over and above to ensure it all went smoothly. We can’t recommend him highly enough...we are so pleased. Thank you Richard.
AVR Construction
Rating: 5 out of 5
Extension Builder in Friern Barnet
I have a 10 years in construction industry ( landscaping) dancing paving foundations and many more For a fare quote contact me .
Get in touch
Latest review:
Groundwork & Foundations- 6 Jul 2026
Concrete shed base and shed assembly. Great quote, quickly got on with the job, very good communication and tidy. Very happy with the results, would recommend.
Delta Electrical Solutions Ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
My work consists: . ALL ELECTRICAL AND FIRE ALARM INSTALLATIONS. . NICEIC DOMESTIC AND APPROVED CONTRACTOR. . FULL REFURBISHMENT . EXTENSIONS AND LOFT CONVERSIONS. If your looking for a reliable hard working and fully qualified team of builders look no further then Delta Electrical Solutions Ltd.
Get in touch
Latest review:
Electrical- 10 Oct 2018
Glorian was super speedy fitting spotlights in my living room and kitchen. He was very tidy and did a great job all round.
Ridi Building Services
Rating: 5 out of 5
Extension Builder in Friern Barnet
Hi. My name is Ridvan and I have been working on construction industry for more than 16years. All these years I worked hard to get the experience how to start and finish the job in high standards. 7 years ago I started working for myself. I am expert on Loft Conversations, extension Restoration & Refurbishment, Pitching Roofing and Carpentry (cupboards, doors, wooden floor and all other things that are wood working). My motto in my work ethic is, treat others as you would like to be treated.
Get in touch
Latest review:
Carpentry- 18 Sep 2021
Out of two chosen workmen Ridvan was the one who followed up on our connection,then visited,we agreed price and start date. Turned up as agreed. His manner and work ethics are outstanding, going that extra time to finish the job to a high standard and fine detail. Could not wish for a better outcome, from an also pleasant man. Thank you Ridvan, will be using you again.
Nani Builders Ltd
Rating: 4.8 out of 5
Extension Builder in Friern Barnet
Nani Builders gives you high quality of work and competitive quotes. We’re operating in construction for about 16 years.We work really hard and we have a great reputation with our clients. We cover all aspects of property no job is big or small!
Get in touch
Latest review:
Extensions- 27 Feb 2023
Nani was extremely professional throughout the kitchen renovation and went above and beyond to ensure everything was perfect. Nani is extremely knowledgeable and has a team of highly skilled individuals to carry out the job to a high standard - this includes building the downstairs toilet and utility room. I highly recommend Nani for any building work.
Majesticbuild
Rating: 3 out of 5
Extension Builder in Friern Barnet
At Majestic Build Construction Company, we don’t just build structures; we craft environments that blend seamlessly with nature. With a passion for creating breathtaking outdoor spaces, our landscaping services are designed to enhance the natural beauty of any property, be it residential, commercial, or public. We specialize in: • Custom Landscape Design: Tailored to suit your vision and the unique features of your land. • Hardscaping Solutions: Including patios, walkways, retaining walls, and water features that add depth and functionality to your outdoors. • Sustainable Landscaping: Focusing on eco-friendly practices and native plant selections for a greener future. • Comprehensive Maintenance: Ensuring your landscapes remain as vibrant and immaculate as the day they were created. With a dedicated team of professionals and a reputation for excellence, Majestic Build Construction Company transforms ordinary spaces into extraordinary outdoor experiences. Let us bring your landscaping dreams to life!
Get in touch
Latest review:
Bricklaying- 17 Dec 2024
They initially gave a fair price and a date and timeline that fitted with our needs. Subsequently they over ordered on the bricks so we had over 100+ expensive London bricks left over and they under ordered on sand and cement.(Luckily the shop took them back but we had to deliver them there) The job took far longer than they had said although the poor weather did not help much which could not be helped. The worst was that the wall was finished so that the latch of the gate could not be fitted as the wall was a bit too long! The wall looks good but their customer service and time given for job as well as ordering materials needs some improvements. They are pleasant workers, not rude in speaking

Top rated Extension Builders

Our Extension Builders in Friern Barnet, are rated 4 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 Friern 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 Friern 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 Friern Barnet who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Friern Barnet?

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

Find extension builders in Friern Barnet with MyBuilder

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

Step 2: Compare different extension builders in Friern Barnet

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

Step 3: Hire Friern Barnet extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Friern 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.

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

What to ask a Friern Barnet extension builder before hiring?

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

An extension builder in Friern 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 Friern 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 Friern 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 Friern 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 Friern 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 Friern Barnet

Can an extension builder in Friern Barnet help with planning permission?

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

Many Friern 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 Friern Barnet help with materials and finishes?

Yes, most extension builders in Friern 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.