Extension Builders in Muswell Hill

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 Muswell Hill

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Em
Rating: 5 out of 5
Extension Builder in Muswell Hill
Hey I’m Emrah professional builder for 6 years but my experience date way back. I do mostly refurbishments and maintenance. You can see some of my work below
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Latest review:
Conversions - General- 4 May 2025
I Hired Em to do my ground floor reno, which included a garage conversion and remodel of my kitchen where 2 internal walls were removed. Very glad I found Em to do the job. Him and his team was efficient, friendly, tidy and hard working. We encountered obstacles along the process (which is normal for any renovation) but Em gave his opinion, listened and we came to the best solutions. Very happy with the result. Em is a reliable, punctual, knowledgeable, fair, down to earth guy and one of the best if not the best contractor I have hired. Highly recommend. Some before and after pictures.
ResidentDevelopments
Rating: 5 out of 5
Extension Builder in Muswell Hill
Conceiving and delivering aspirational residences, for the Resident.
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Latest review:
We have previously been burnt working with self proclaimed tradesmen. The organisation is professional and customer focussed. Working with them was a pleasure, I couldn’t recommend them enough.
George Eid Haykal
Rating: 5 out of 5
Extension Builder in Muswell Hill
I am a construction contractor specializing in a wide range of refurbishment and renovation projects. I have established a strong network of engineers and tradesmen who possess diverse specialties and expertise.
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Latest review:
I highly recommend William Haykal. We hired him to renovate our entire 2 bedroom, 2 bathrooms flat, he’s done the job in just 19 days and the end result is simply stunning. His attention to details, craftsmanship, and professionalism exceeded my expectations. From the initial consultation to the final touches, he made the process seamless and delivered outstanding results. I couldn't be happier with his work!
Poynts Works Ltd
Rating: 5 out of 5
Extension Builder in Muswell Hill
I'm an ARB Registered Architect with 18 years' experience designing residential extensions, renovations and conversions across London. I work directly with homeowners from the earliest ideas through planning permission, Building Regulations and, where required, construction on site. Every project begins by understanding how you want to live. Using sketches, 3D models and visualisations, we can explore different options together before you commit to building work, giving you confidence that the design is right for your home and your budget. Once the design is agreed, I prepare the detailed technical information needed for construction and remain closely involved throughout the build, helping resolve questions on site and ensuring the original design intent is delivered. If you're considering extending or renovating your home, I'd be happy to arrange a free initial conversation to discuss your ideas, the likely planning implications and the next steps.
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Latest review:
Architecture- 28 Aug 2018
Stephanie is very professional and her knowledge is exceptional. As her advise was good and timely, i was able to move on with my project. Hard to find an honest person like her and I highly recommend her.
VEIG
Rating: 5 out of 5
Extension Builder in Muswell Hill
We are a dedicated construction company specialised in delivering quality projects to meet the unique needs of our clients. We pride ourselves on our ability to adapt to the specific requirements of each project. We understand the importance of clear communication and collaboration, which is why we work closely with our clients from project inception through to completion. Regards VEIG
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Latest review:
Conversions - General- 21 Jul 2026
We had a very positive experience working with George and Luigi. The work was completed to a high standard, communication was clear throughout. They were reliable, helpful, and went out of their way to make sure we were happy with the finished job. I look forward working with them again and would happily recommend them to others.
AMR BC Ltd
No reviews yet
Extension Builder in Muswell Hill
AMR is a building construction company based in London, offering a range of high-quality services for both residential and commercial clients. With years of experiences, we pride ourselves on delivering bespoke and innovative solutions to meet our clients’ requirements.
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Ernest gjeli
No reviews yet
Extension Builder in Muswell Hill
good and cheap...
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Montbron Construction Limited
Rating: 5 out of 5
Extension Builder in Muswell Hill
We have over 15 years experience carrying out a range of projects including domestic extensions, refurbishments and loft conversations and many other aspects of general building. We pride ourselves on the quality of our work and completing projects within the agreed time frame and budget. We always really appreciate the opportunity to discuss your project with you and provide a quote.
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Latest review:
Restoration & Refurbishment- 29 Aug 2020
Hugh's team did a great refurbishment job for me. They stuck to the dates agreed, carried out the work as promised and in a professional way and even cleared-up well before they left!
Nick
Rating: 5 out of 5
Extension Builder in Muswell Hill
With 14 years experience in construction I undertake all kind of jobs: built, repairing and maintaining. I'm a reliable and a good communication person. Delivering great results within the planned time frame and budget is at the basis of what we do. We work closely with our clients, providing advice, discussing alternatives and taking on responsibility for the execution of all activities. We arrange orders, deliveries and returns of materials.
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Latest review:
Carpentry- 26 May 2024
Nick is fantastic and a highly skilled professional. I am very happy with his work. He communicated very clearly. He understood what I wanted and the end result went above and beyond my expectations. I am so happy I’ve found him and definitely using him for future work!
Brunkel Lahi
No reviews yet
Extension Builder in Muswell Hill
My name is Brunkel, I’ve been on the renovation industry for 11 years, mainly central London W1 doing high end properties. My experience includes everything from single-family homes to luxury, multi-million-pound flats. I bring this top level of quality and expertise to all of my projects, regardless of postcode. My team work with the highest level of respect, discretion and professionalism, which is what has been the key to my success all these years. I look forward to new contacts.
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Velvet Construction
Rating: 5 out of 5
Extension Builder in Muswell Hill
About Velvet Construction: 5+ year experience in the building trade. CSCS Black Card Holder All health and safety certificates. Velvet Construction has a large team of qualified tradesmen, delivering a high standard of workmanship at a competitive price. For more information on our services please contact us. We offer free quotations and all work is insured and guaranteed.
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Latest review:
Restoration & Refurbishment- 10 May 2019
Velvet Construction are a friendly and professional contractor who work hard to deliver an excellent service. We have worked closely with them and their practical and dynamic approach is refreshing to work with in a professional capacity and we would highly recommend them. Their quality of workmanship is excellent which is largely driven by their own high standards which they monitor closely and consistently. They are organised and communication is always great. A big thank you to the whole team and Specially Negedet being a joy to work with . Highly recommend him and his hard work time. Thank you
Dizzain Ltd
Rating: 5 out of 5
Extension Builder in Muswell Hill
The multi trader with excellent skills and consistently good in work performance. If you need help with your house project, such as internal structural changes, rear extensions, loft conversions or any other house structural issues, please don't hesitate to contact. Happy to help and discuss suitable solutions regarding structural design, and to comply with building regulations. A fair and good fees.
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Latest review:
We used Andrius recently and were very happy with the service. Inspected our house and spent a lot of time discussing everything in detail. He completed the drawings very quick and communication was good. Good value for money. He even helped amending something later on as needed. Thank you!
Marko carpenter
No reviews yet
Extension Builder in Muswell Hill
Hi My name is Marko I’m a carpenter by trade Been in this business for more then 10 years My main focus is on Quality work And do the job up to standards And I never try to do the job the quickest way, but try and do it always the way it should be I want my clients to be happy with the job I do that’s the manin thing Anybody is welcome to call for Carpentry First and second fix Loft conversions Extensions Landscaping Roofing Thank you
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Omniscient Construction Ltd
Rating: 5 out of 5
Extension Builder in Muswell Hill
We have 20 years experience in construction,from extensions,loft conversions,property maintenance,kitchens,bathrooms,basement conversions,through to new builds. We work closely with our clients to achieve their goals. We have a trusted workforce.
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Latest review:
Extensions- 6 Apr 2018
Excellent in all departments
2A CONSTRUCTION LTD
No reviews yet
Extension Builder in Muswell Hill
2A Construction We are a premier construction and renovation company based in the heart of London. With a passion for transforming spaces and a commitment to excellence, we deliver high-quality construction and refurbishment services that elevate residential and commercial properties. Our team of skilled professionals brings a wealth of experience to every project, ensuring that each client's vision is brought to life with precision and creativity. Our services : Full Home Renovations; Home Additions and Extensions; Kitchen Renovations; Bathoom Renovations; Loft Conversions; Roofing and Re-Roofing Services.
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Arch Construction and Project Management Ltd
Rating: 5 out of 5
Extension Builder in Muswell Hill
Arch Construction and Project Management Ltd is specialist of structural engineering, structural alterations,restoration, extensions, loft conversions and in middle&large sized projects on highest standard. We offer full building site and/or project management from concept to completion based on 22 years experience in construction industry with hassle and frustration free experience.
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Latest review:
Extensions- 12 Jan 2023
George and his team did an excellent job in building our extension and dealing patiently with our requests or changes. We had weekly face to face meetings with George and he would respond promptly to any issue. A very professional approach to the build project and an excellent result of build quality.

3.9

Top rated Extension Builders

Our Extension Builders in Muswell Hill, 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 Muswell Hill?

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 Muswell Hill 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 Muswell Hill who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Muswell Hill?

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

Find extension builders in Muswell Hill with MyBuilder

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

Step 2: Compare different extension builders in Muswell Hill

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

Step 3: Hire Muswell Hill extension builders with confidence

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

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

What to ask a Muswell Hill extension builder before hiring?

Before hiring an extension builder in Muswell Hill or extension building company in Muswell Hill, 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 Muswell Hill?

An extension builder in Muswell Hill 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 Muswell Hill 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 Muswell Hill?

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 Muswell Hill 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 Muswell Hill 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 Muswell Hill

Can an extension builder in Muswell Hill help with planning permission?

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

Many Muswell Hill 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 Muswell Hill help with materials and finishes?

Yes, most extension builders in Muswell Hill 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.