Extension Builders in Friern Barnet

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

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Some of our top rated extension builders in Friern Barnet

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Gjat construction ltd.
Rating: 4 out of 5
Extension Builder in Friern Barnet
We provide high quality services with bathrooms and kitchens to stand out. We supply high standard services at affordable prices. Experts in house, kitchen and bathroom renovations with more than 10 years of experience. Contact us for free estimates.
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Latest review:
Bathroom Fitting- 22 Apr 2023
Younger brother Anti was a professional and I would hire again but beware of the elder sibling as his workmanship his poor, here is a list:- 1) the cupboard fitted under the stairs was misaligned and the hinges are loose. Paint job was poorly finished too. 2) cupboard fitted across the boiler was all bent. Anti came and fixed it. 3) varnish across door and skirting boards were done once and therefore have an uneven spread 4) the floorboards did not have enough glue placed in certain areas so it creaks 5) grout in some time are missing 6) really poor sealant work on the bathroom 7) broke my £2000 TV and then hid the evidence. I only found out after placing the furniture back in its place. In contrast Anti did a good job in fitting the radiator. If you can Illicit promises of Anti only completing the job without the older the brother then go for it or else give them a wide berth.
Construction
Rating: 5 out of 5
Extension Builder in Friern Barnet
Carpenter Joiner:level 2 Diploma (blue CSCS) 10 years experience in UK 10 years experience back home (Romania) Level 2 Diploma in Electrical &Electronic Engineering Technology (QCF) CERTIFICATE of Attendance Waterproofing in Buildings (Delta Membrane Systems) Certificate of Attendance GRP Roofing (fibreglass flat roof installation) Construction Industry Scheme (sole trader registered)
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Latest review:
Carpentry- 17 Sep 2021
Viorel quoted promptly, arrived on time and did a a great job of the required carpentry jobs at my house - a cat flap and alterations to cupboards. I'm already talking with him about doing other jobs in the future so would definitely recommend Viorel!
Fire Safety Works Limited
Rating: 5 out of 5
Extension Builder in Friern Barnet
Lofts ,extension, Full refurbishment plastering Painting and decorating wallpaper and much more on commercial and domestic properties 12 years of experience
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Latest review:
Painting & Decorating- 4 Jul 2017
Andi and his team did a fantastic job including removal of wallpapers, skimming and repainting walls and ceilings in no time.... the team worked wonders day and night handing back the property ahead of our move in day!! Andi is easy to talk to, extremely hardworking, keeps his promise and does it all with a smile! I wish I was like that at work when my boss gives me job :) Very pleased we hired Andi
Ermal
Rating: 4.9 out of 5
Extension Builder in Friern Barnet
Name: Ermal Keri
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Latest review:
Plumbing- 8 Jul 2026
Fantastic. Ermal arrived on time. Very able in identifying and he explained the issue. Effectively fixed and found the permanent solution. Friendly, highly recommend. Thank you
KG DESIGN & BUILD LTD
Rating: 5 out of 5
Extension Builder in Friern Barnet
Hi I`m Kleida .I worked in Building industry for a while now and I have built a quite a knowledge on extensions loft conversion and refurbishment . I recently decided to start working for myself .I also have a very good working team with various knowledge on various stages of projects .
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Latest review:
Conversions - General- 8 Oct 2025
Gaz and his team were professional and hard working, and clear about what would happen when. The job is now finished to a good standard, and on time.
Plumb4All
Rating: 5 out of 5
Extension Builder in Friern Barnet
With over 20 years’ experience in the plumbing and building industry, this has enabled our team at **Plumb4All** to become a well-known and trusted company. We offer a 24/7 call out service and long term support for existing clients as a single point of contact for any future queries and issues. Our many happy and repeat customers find us through word of mouth and being fully qualified gives you the peace of mind that quality of service and very high standards are at the core of our values.
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Latest review:
Bathroom Fitting- 7 Mar 2021
Very professional and very thorough Solved the problem efficiently Would definitely recommend.
M&M Crew Ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
At M&M Crew Ltd we believe that Your project will be a success it deserves. We challenge the status quo by working hard with our Clients from the very start until successful completion. At the beginning you will receive from us a detailed quote, so there will be no unpleasant surprises to your budget. This will also enable impact from you if you wish to substitute some materials to suit your project requirements.
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Latest review:
Restoration & Refurbishment- 14 Apr 2021
Very Satisfied Customer !! Marek was new on this site and with no reviews however that did not deter me from contacting him to provide me with a quote. Marek was courteous, punctual and listened to my requirements before giving me a quotation that not only had a breakdown but was fair. I like him instantly. Marek worked quietly, conscientiously and neatly within the promised timeframe. I was extremely pleased with his work and am already lining him up with another job. I have no hesitation in recommending him and will certainly be using his services again. Thank you Marek for proving that there are still good, honest, hardworking builders around.
K&L Construction
Rating: 5 out of 5
Extension Builder in Friern Barnet
We are a group of experienced contractors specialised in brick work, block work,tiling,rendering,plastering&decorating also in structure work,installing new beams, forming new floor levels & stud walls.We are more than happy to take on board all types,sizes & shapes of works & well prepared for a challenge.We as a team cover all building sector(BUILDING,PLUMBING,ELECTRIC,DECORATING,ALL IN ONE & MORE) so please don't hesitate to give us your trust and we promise you that we will deliver
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Latest review:
Conversions - General- 21 Jun 2025
Working with Petrit was a very pleasant and enjoyable experience. He and his team are friendly and open for discussions. They’re quick, affordable, and help with decision making. Would hire again! Have to say as well, as a woman, Petrit and his team treated my husband and I equally, unlike my experience with other tradesmen who direct all their conversations to the men. Petrit knocked opened up our living kitchen area, laid herringbone floors, replastered the property, installed new radiators, added a built in ladder to our attic, and re did our bathroom. He also helped us match the floor boards from an existing room and helped us source front and back doors for much better price than what we were getting quoted in East London. The painting of the entire house was done in a rush as we needed to move in, so the attention to detail fell down a little here compared to everything else that was done, but I wouldn’t hesitate to work with Petrit again!! After and before pics included!
Shpetim troka
Rating: 5 out of 5
Extension Builder in Friern Barnet
Troka Construction specializes in home refurbishments, extensions, and a wide range of home improvements. With a focus on quality craftsmanship and personalized service, we bring our clients' visions to life with dedication and attention to detail.
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Latest review:
Carpentry- 30 Apr 2026
Great communication and was able to come and do the job quickly after first message. Job was completed to a great standard (skirting boards and some scotia)
AVStructures
Rating: 5 out of 5
Extension Builder in Friern Barnet
A.V. Structures is a construction company working with top-rated contractors and providing services to private clients around London. Our highly experienced team of builders has excellent skills and knowledge gained delivering projects locally and abroad. We approach each building process following Environmental, Health, and Safety guidelines. All our quotes are free, and we will always try to get a quote to you within a week of us visiting your property.
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Latest review:
Demolition- 24 Nov 2021
We employed A.V Structures for the building of an external wall around our property, the removal of a garage and the installation of railings and gates. Throughout the 4 week programme we could not have been happier with their work. Arrival was prompt, their pace of work displayed energy and purpose. They were mindful of us and our neighbours and made sure the area was left clean and tidy at the end of each days work.in addition the workmen were courteous and kept us fully informed. Alex, the owner of the company, kept in close contact with us to assure himself of our satisfaction. He came on site at intervals to check that all was going according to plan. We therefore felt completely confident that quality and outcomes were important to him. Employing A.V Structures was a decision we were pleased to have made. We would use them again without hesitation and recommend them highly to anyone considering similar work.
Fortress Property Developments Ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
Fortress Property Developments is a trusted construction company with over 12 years of experience delivering high-quality building and renovation services. We specialize in a wide range of projects, including new builds, renovations, extensions, and commercial developments, always ensuring top craftsmanship and attention to detail. Our team of skilled professionals is committed to bringing clients’ visions to life, no matter the size or scope of the job. At Fortress Property Developments, we understand that every project is unique, which is why we offer tailored solutions to meet individual needs, timelines, and budgets. From initial planning and design to construction and final finishes, we guide our clients through every stage of the process, providing expert advice and personalized service. Whether you’re looking to build your dream home, update existing spaces, or develop a commercial property, Fortress Property Developments is here to help turn your ideas into reality.
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Latest review:
Living room , lounge and downstairs toilet. Several different colours all done in a day . Very courtious and tidy . Highly recommend
EBV construction
Rating: 5 out of 5
Extension Builder in Friern Barnet
All building construction loft conversion Extension Refurbish Carpenter Plastering rendering Dry lining Garden walls
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Latest review:
Plastering- 22 Jul 2023
Mr Meta and his skilled team completed the plastering job as promised with high standard,good, honest and profesional. Will be hireing on other jobs.Many thank👊👍
SM Builder Expert ltd
Rating: 5 out of 5
Extension Builder in Friern Barnet
At SM Builder Expert Ltd the core value is customer satisfaction. SM Builder Expert ltd provides solutions for your construction needs; including building extensions, loft conversions, New build, rebuilding and refurbishing, internal alterations, painting and decorating, as well as garden and patio works. We have a very good track of previous completed jobs, with necessary recommendations and contacts at request.
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Latest review:
Bathroom Fitting- 29 Sep 2020
Sergiu and his colleagues did a great job refurbishing our bathroom. Always punctual, clear with costs and extras and delivering great work overall. We can definitely recommend them!
Carpenter quality
Rating: 5 out of 5
Extension Builder in Friern Barnet
CARPENTER QUALITY LTD •SPECIALISED IN EXTENSIONS •LOFT CONVERSIONS •BESPOKE CARPENTRY •KITCHEN & JOINERY •NEW BUILD & REFURBISHMENT
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Latest review:
Carpentry- 7 Jul 2026
Wonderful work. Efficient and fast. Would highly recommend to anyone
GMC LONDON RENOVATIONS LTD
Rating: 5 out of 5
Extension Builder in Friern Barnet
GMC LONDON RENOVATIONS its specialist in New Builds , Home Extensions , Loft Conversion , Home Renovations and Refurbishment we are committed to providing the best quality workmanship and service. We have experience over 10 yrs in Construction industry Residential and Commercial, we completed successfully many projects during the years where quality was our No1 priority . We holding Public Liability Insurance for customer Peace of Mind and Safety certificates for Gas and Electrical work installation. GMC LONDON RENOVATIONS will deliver from start to finish your project without hassle or delays . We are professionals and enthusiastic young team members.
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Latest review:
Bathroom Fitting- 24 Oct 2025
We had 2 bathrooms refurbished at the same time by Romulus and his team over a 4 week period. Both bathrooms were completed on time and on budget. We were looking for 2 functional bathrooms, but ended up with 2 very high spec bathrooms within our original budget, and couldn't be happier with the high level of service and professionalism by all his team. We will now move forward and have his team refurbish our kitchen.
Cepele Construction
Rating: 5 out of 5
Extension Builder in Friern Barnet
Introducing Cepele Construction Experience and Past Jobs: Cepele Construction has earned a reputation for exceeding expectations and delivering high-quality results. We have successfully completed numerous projects, such as the ones for James Smith and Teresa McTavish, ensuring that each client's unique vision is realized with excellence and professionalism. Where We Can Work: We operate primarily in London and the surrounding areas, offering our services to clients who need reliable and top-quality construction work. Special Skills: Our expertise includes loft conversions, customized construction solutions, and exceptional project management, ensuring every detail meets our high standards. Why Hire Us: At Cepele Construction, we are committed to providing top-quality services tailored to each client's needs. Our dedication to excellence and client satisfaction sets us apart as the best choice for your construction projects. For more information, visit our website at Cepele Construction
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Top rated Extension Builders

Our Extension Builders in Friern Barnet, 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 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.