Extension Builders in Crouch End

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (15 reviews)

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Some of our top rated extension builders in Crouch End

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Direct Lofts LTD
Rating: 5 out of 5
Extension Builder in Crouch End
A construction company specialising in loft conversion and extensions with 25 years of experience based in North London, enfield.
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Latest review:
Extensions- 12 Jun 2026
Nik did an amazing and professional job on my utility room. He was a great collaborator and very easy to work with. Highly recommended!"
Samul Construction LTD
Rating: 5 out of 5
Extension Builder in Crouch End
Estimate Prices From: * Loft Conversion £50k(labour+materials+scaffolding) * Home Extensions £3-4k per square metre * Basement £3-8k per square meter (labour+materials). * Bathroom refurbishment £8k (labour).
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Latest review:
Demolition- 18 Oct 2011
Thank you very much - good job and good service. A real help!
MARCIN'S CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Crouch End
Marcin’s Construction LTD is a professional building and refurbishment company delivering high-quality residential renovation services across London and surrounding areas. We specialise in full property refurbishments, kitchen and bathroom renovations, and interior works. Our focus is on clear communication, detailed written quotations and a clean, well-organised finish on every project. With over 10 years of experience, we work with homeowners, landlords and property investors, providing a structured and reliable service from initial discussion to project completion. Every job is carefully planned, carried out efficiently and completed to a high standard. Additional information about our work and recent projects is available on our company website.
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Latest review:
Extensions- 7 Oct 2025
I cannot recommend Marcin and his men more. They were immensely helpful throughout a difficult (due to my inexperience and space and budget constraints) and rushed project. They worked to my budget and schedule and delivered to high quality - really an unbelievable job. If you choose them, you are in good hands. They are honest, reliable, and trustworthy.
Blueprint Builder UK
Rating: 4.4 out of 5
Extension Builder in Crouch End
I’m a local builder with over 25 years of experience, specialising in high-quality brickwork and home extensions. From start to finish, I take pride in delivering reliable, professional service and strong attention to detail. Whether it’s a full extension, garden wall, or any kind of brickwork, every project is completed to the highest standard. Customer satisfaction and honest workmanship are at the heart of what I do.
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Latest review:
Conversions - General- 3 Apr 2026
I originally left Stuart a five star review because the workmanship and communication were excellent, and I booked him to return to complete the internal works on our extension. After paying a deposit, the work was due to start on 27 June, but Stuart never turned up and stopped communicating. His partner later asked if I could delay the work for a few months because he couldn't contact me. When I explained I couldn't wait and politely requested my deposit back, I was blocked. I have now been left with no option but to take him to the Small Claims Court to recover my money. It's a real shame because the original work was of a high standard, but I cannot recommend someone who takes a deposit, fails to return, and then ignores all communication.
LQ Construction
Rating: 5 out of 5
Extension Builder in Crouch End
Based in North London and with over 18 years of experience in the construction industry, LQ Construction specialises in bricklaying, renovations, and paving services, offering our clients high-quality, reliable solutions to their construction needs. Committed to delivering excellence in every project we undertake., the extensive experience have equipped us with the expertise to handle a wide range of projects with precision and efficiency. We take pride in our craft and approach each project with a commitment to integrity, reliability, and meticulous attention to detail. Whether you're embarking on a major renovation or need professional bricklaying or paving services, we ensure your project is carried out to the highest standards, on time and within budget. Explore our website to learn more about our services and how you can trust LQ Construction to help bring your projects to life.
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Latest review:
Bricklaying- 11 Jul 2025
Landi was excellent. Finished the job to a good standard
MNM CONSTRUCT LTD
Rating: 5 out of 5
Extension Builder in Crouch End
The company was set up following years of working on small and large projects for both private and public clients subsequently understanding the continuous increase in demand of manageable, cost effective and quality projects.
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Latest review:
Plastering- 26 Jun 2016
We hired Manu and his team to plaster our summerhouse, relocate two radiators and fit a new bulkhead ceiling in the lounge and install LED tape. He was knowledgable, professional and considerate and I highly recommend Manu and his team. Not only did he understand the project for the bulkhead, but he came up with another suggestion which we went with, and friends and family agree looks amazing. The finish on the plasterwork is perfect and Manu and his team worked hard and even left the summerhouse cleaner than when they started! It is great to work with a team who pay such attention to detail, listen to the client and get the job done to a high standard. It was a risk to go with Manu as he didn't have any feedback when I hired him. I actually got him to quote so I could compare prices with someone else I had in mind to do the job, but when I met Manu I felt he would be the better person to do the job as he listened and understood exactly what I wanted and so I ended up hiring him instead. I wouldn't hesitate to hire him for any future jobs. Thank you Manu and team!
H&M Construction
Rating: 5 out of 5
Extension Builder in Crouch End
We do carpentry and roofing works. We present our work professionally. We strive to please the customer. We have experience over the years. Our prices compete with everyone. Our headquarters is in London
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Latest review:
Carpentry- 27 Mar 2022
We were very happy with Hesham’s work on a tricky job mending our Victorian window shutters.
Qualitas Build Ltd
Rating: 5 out of 5
Extension Builder in Crouch End
Quality service assured to all customers. Insured. All work guaranted quality work to domestic and commercial customers. Call us today for a free quotation. Work history Over 19 years of experience working all over London and sorrounding areas delivering excellent finish. We take on general building work, extensions, loft conversion, roofing, renovation, new build, tiling, Plastering.
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Latest review:
Handyman- 23 Nov 2024
Excellent, recommend this guy. He will do the jobs and do it well!!
Maven Heating Ltd
Rating: 4.4 out of 5
Extension Builder in Crouch End
We specialise in Gas heating & plumbing Boiler installation Unvented hot water cylinder Underfloor heating Full central heating installation We will beat any genuine gas safe engineer price.
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Latest review:
Gas Work- 12 May 2018
Great price and quality
JED BUILDERS LTD
Rating: 5 out of 5
Extension Builder in Crouch End
A limited company established in 2016. More that 8 years experience in construction business. We undertake all building works, big or small, managing and looking after project so the client can have the best results possible.
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Latest review:
Kitchen Fitting- 14 Dec 2018
Very lovely and professional and clean. Very prompt/punctual and worked efficiently , will be using them again to do more work in my property. Definitely with recommend them to anyone ! 10/10 from me ! Good service delivery
Luminous builders ltd
Rating: 3 out of 5
Extension Builder in Crouch End
At Luminous Builders we bring design, build, and refurbishment together under one roof. We treat every property as a living structure — crafted with care, precision, and integrity. Whether you need a bespoke renovation, detailed interior finish, or full property transformation, our mission is simple: to deliver spaces that inspire, endure, and shine.
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Latest review:
Bathroom Fitting- 26 Feb 2026
Worst job ever. The first day he came at 10.30am started the job left at 9pm said it would take a day & a half. The next day he said he would be here at 8.30am again he came at 10.30am & his words were I’m going to finish in 2 hours maximum. By 3pm he still hadn’t finished & I heard him speaking to someone on the phone saying that he would be there in 45 minutes.then he told me he needed a part for my job & he would be a couple of hours, he came back 4 hours later without a part.Again he was here till 9.30pm. He said he had finished. I went to look and his work was bad. I complained he said he would come back the next day. the next he said he had finished & I told him I wasn’t happy he came back the next day. He tidied up his mistakes.he shaved the bottom of the door off a bit as it wouldn’t close coz of the new tiles & he left, as he was leaving he said please give me a good review. I said I’ll tell the truth & he said but the truth isn’t good. He didn’t stick the threshold back on.
KBL Construction Service Ltd
Rating: 4.7 out of 5
Extension Builder in Crouch End
we have 10+ years of experience and provide high quality of workmanship in every aspect of building services from refurbishments to loft conversion and extension.we are professional team of skilled builders, tillers, bricklayer, carpenter, painter and provide services for plumbing and electric work.
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Latest review:
Extensions- 13 Oct 2023
KBL recently completed a side infill extension for us that involved a lot of complex hurdles (e.g., requiring special foundations because of a Thames Water waste pipe and steel beams). In hindsight, we were very lucky to have hired them because they made the whole experience stress-free by explaining everything to us and handling our neighbours, contractors, structural engineer and building control for us. The amount of digging in confined spaces and hard, physical labour they put into this job is amazing. The extension looks great, is solid, warm and watertight. The wetroom they built inside it hasn't had any problems - plumbing is working great. Their plastering quality is excellent. We had to live in the property during the 4 months of construction but we felt relaxed and 100% trusted KBL to respect and care for the house. They have a lot of experience, know the building regulations, use quality materials and methods, they answered all of our questions with patience and always responded to my phone calls + texts quickly. They're so good that we'll give them an additional job to do which we originally planned for in spring 2024. Everyone we know wants KBL's contact details and we definitely want to ask them back for future work.
Chedy
Rating: 5 out of 5
Extension Builder in Crouch End
Hello, my name is Chedy and I have over 10 years experience within the carpentry and joinery industry. I can do anything from fitted wardrobes/kitchens, flooring, fire check doors, loft conversion dormer, flat and pitched roofs. I can get references on request as well as show you samples from previous jobs. Thanks.
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Latest review:
Carpentry- 6 Sep 2020
Great job. Very happy with the finish. Thank you!
BUBuild Limited
Rating: 4.6 out of 5
Extension Builder in Crouch End
Family run business with over 10 years of experience in the building industry, we provide high-quality workmanship and reliable service for every project, big or small. We specialise in full bathroom and kitchen renovations, full house refurbishments, extensions, flooring, and a wide range of general building work. No matter the size of the project, we work closely with our clients to achieve the best possible results and bring their ideas to life. You can find more photos of our work on instagram @bubuild.ltd
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Latest review:
Bathroom Fitting- 18 Sep 2021
During the quote nothing was too difficult and Iustin had some great ideas. 'You tell me what you want and we'll do it.' Great. Day one they caused a leak into the kitchen. Halfway through day two we ordered work to stop because it was still leaking. It took several calls to Iustin to resolve. The leak caused the extractor fan in the kitchen to drop. They fixed at the end but the lights on it don't work consistently. Attention to detail was zero. Floor not sealed behind cupboard, wobbly plaster, streaks of white paint on blue (and vice versa), chipped paint, and tiles not evenly placed, with roughly cut edges. New flooring laid before finishing the walls, dropping sealant, dust and paint on it. Many things had to be redone or changed - but they generally did redo when asked. A window they put in is lower than agreed and the pebbledash doesn't match. They installed the vanity unit on the wrong wall. No dust sheets were put down over kitchen surfaces when drilling through concrete, covering everything in a thick layer of dust. The project was contracted to finish by 4 September, but took until 15 September. Iustin did apologise for this on the last day. On the last day, Marin threatened us because we wanted to wait until the job was finished to send the final payment. At that point we'd paid £500 more in instalments than agreed. Receipts for materials contained items not used or not ours. They took away things that we'd paid for. Overall not a great experience.
ArhiTERRA design and build
Rating: 5 out of 5
Extension Builder in Crouch End
We are a family business with a dedicated team specializes in works of any size ranging from the design through to building process. Our experience is vast and we stand for fast and high quality services beeing in construction industry for over 10 years . The following services are available: -design and build of extensions and lofts, -refurbisments, -swimming pools and outdoor spaces -landscape design More details can be found on our website.
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Latest review:
Architecture- 5 May 2018
Contracted to provide options for a new garage office and storage solution. They turned up promptly and were very polite and professional. Through many discussions they ultimately offered up a very good bespoke solution for our situation and once planning is approved we will have no issue with looking to them to complete the actual build. We have had a lot of issues in the past finding reliable trades but with ArhiTERRA design and build we felt confident in their ability to both visualise and implement the build as well as follow through on their promises. I would say that for anyone considering discussing a project with them that it is worth your time to at least have a meeting with them and judge for yourself.
Nomos Construction Ltd
Rating: 5 out of 5
Extension Builder in Crouch End
Nomos Group is a well versed contractor covering all aspects of construction from start to finish with more than 40years of combined knowledge and experience in the industry. We aim to remove the stigma of rouge builders 1 job at a time. With a dedicated team of 50 staff members ranging from contract managers, office admin, buyers, estimators, surveyors, architects, engineers, interior designers and site operatives we have all areas covered to take your ideas from inception to completion. Covering London & greater London we can take on jobs as small as a bathroom refurbishment all the way through to a new build development. For that personal touch we offer a Bespoke service to help design your dream home and get all the relevant permissions in place for the works to be completed.
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Latest review:
Incredibly impressed with the Nomos teams professionalism and quality of work. They made what would normally be a stressful process very easy and without issues. The attention to detail they provide is second to none and we are extremely happy with the results. Would definitely recommend!

4.1

Top rated Extension Builders

Our Extension Builders in Crouch End, are rated 4.1 out of 5 based on 15 reviews from customers like you.

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What types of services are offered by local extension builders in Crouch End?

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 Crouch End 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 Crouch End who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Crouch End?

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

Find extension builders in Crouch End with MyBuilder

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

Step 2: Compare different extension builders in Crouch End

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

Step 3: Hire Crouch End extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Crouch End, 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.

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

What to ask a Crouch End extension builder before hiring?

Before hiring an extension builder in Crouch End or extension building company in Crouch End, 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 Crouch End?

An extension builder in Crouch End 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 Crouch End 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 Crouch End?

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 Crouch End 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 Crouch End 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 Crouch End

Can an extension builder in Crouch End help with planning permission?

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

Many Crouch End 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 Crouch End help with materials and finishes?

Yes, most extension builders in Crouch End 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.