Extension Builders in Muswell Hill

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 reviews)

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Some of our top rated extension builders in Muswell Hill

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Shapesmakers LTD
Rating: 5 out of 5
Extension Builder in Muswell Hill
Shapesmakers are a small construction company with combined experience of 20+ years in various construction tasks and projects. Our aim is to provide a reliable and quality for our project as well as peace of mind to your customers. We thrive on challenges of each project and exceeding expectations of our clients.
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Latest review:
Conversions - General- 24 Sep 2025
Mario carried out a great job at my apartment. He took off the wallpaper from 3 walls in the living room, plastered and painted them making them like new and carried out a small restoration project of my stairs. He’s very reliable, experienced and easy to communicate to. I highly recommend Shapesmakers
Gjat construction ltd.
Rating: 4 out of 5
Extension Builder in Muswell Hill
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.
Pyramid construction
Rating: 5 out of 5
Extension Builder in Muswell Hill
There is father and son business. We do most bricklaying, Extension, garden walls, renovations and home improvements. Experience 15 years. We are reliable and professionals on our job. Happy to give an estimate.
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Latest review:
Bricklaying- 24 Oct 2020
Perfect. ways on time and to the point Egki and his colleague did an excellent job. With thanks, J.
Genesis London
Rating: 4.8 out of 5
Extension Builder in Muswell Hill
We are more than a building company; we are the artisans of space transformation. Our passion for construction and design is reflected in our specialisation in exquisite kitchen and bathroom installations, comprehensive full-scale refurbishments, and bespoke extensions that enhance your living space. Our expertise extends to loft conversions, where we create functional and stylish additional areas within your home. We take pride in our property development projects, expertly converting buildings into modern, segmented flats, each with its own unique character. Understanding the essence of a personalised touch, we create bespoke built-in wardrobes and shelving units that blend seamlessly with your interiors. Our custom glazing solutions promise not only utility but elegance that complements the aesthetic of your space. Sustainability and innovation are at the heart of what we do. We are innovators in designing and creating reclaimed wood furniture, bringing together environmental consciousness and contemporary design. Our wall-mounted beds are a testament to our commitment to space-saving solutions without compromising on style or comfort. Choose us for a partnership where your vision is our blueprint. From inception to execution, we ensure a service that is as reliable and steadfast as the structures we create.
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Latest review:
Restoration & Refurbishment- 9 Apr 2024
Hector, Elvis and Fabian did a fantastic job renovating our flat. They laid new tiles in our entryway, solved a number of issues with our flooring, removed an old gas pipe and repainted the walls and woodwork in our hallway. We were really impressed with their professionalism and not only did they do a fantastic job but they were a pleasure to have in our home. Very respectful, friendly and knowledgable. They even finished ahead of schedule. We would highly recommend them and would definitely have them back the next time we do a home renovation project.
GOLDFIELD CONSTRUCTION LIMITED
Rating: 4.7 out of 5
Extension Builder in Muswell Hill
Goldfield contraction limited since 2010 we are an professional team, specialising in refurbishment, kitchens and bathrooms installations, carpenter, bespoke furniture such a wardrobe, cupboard etc, painting and decorating single and double story extensions, conversions of all different sizes, general maintenance.
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Latest review:
Bathroom Fitting- 20 Dec 2021
Excellent work, well executed, will certainly hire again.
ASC
Rating: 5 out of 5
Extension Builder in Muswell Hill
Plumbing & heating — full professional range ASC HEATING & PLUMBING is based in London and works across London and the surrounding areas. With 6+ years in business, we offer everything from emergency call-outs and repairs to installations, leak detection, drains, bathrooms, boilers, central heating, underfloor heating and commercial plant rooms — planned so you know scope, timescale and cost up front.
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Latest review:
Plumbing- 1 Apr 2026
Aurel and his son did a great job, really knowledgeable and helped with a difficult job. Not only were the results fantastic but the guys were a pleasure to have around.
P&T Property renovation LTD
Rating: 5 out of 5
Extension Builder in Muswell Hill
LND Development ltd was established by a Polish builder. As a business we pride ourselves to provide a very experienced, hard working, friendly and loyal workforce. We provide a professional and experienced service at very competitive rates.
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Latest review:
Pawel and the team did a fantastic job. The bathroom looks superb and the whole team took time to finish the job to a very high standard. There was a narrow timeframe in which to do the work and this was met (despite more effort than first thought with respect to strengthening the floor). Pawel was easy to deal with and contacted me after the job to ensure everything ok. Highly recommended.
bego limited
Rating: 5 out of 5
Extension Builder in Muswell Hill
Hello I'm Sinan I have been in the construction industry for many years and for me it is not just a job, it is a passion. I absolutely love creating new spaces for people, transforming their homes, and adding real value to their lives. Seeing the joy on my clients' faces when their vision comes to life is what keeps me going. From extensions, conservatories and loft conversions to kitchens, bathrooms, remodeling and even brand new structures, I've done it all. Each project is a unique opportunity to feature high-quality craftsmanship and attention to detail. If it's not done right, I believe it's never been done. Are you thinking of converting or expanding your home? Let's work together to create something extraordinary. Whether it's a cozy family extension or a modern, functional kitchen, I'm here to make your dream space perfect. How about grabbing a coffee and talking about your ideas? 😊
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Latest review:
We have asked him to get paint all indoor walls and also replace the carpet with plywood sheets on saloon. He has done everything perfectly in few days even quicker then we expected. He works very clean and we have never been disturbed by his existence during his work
Vasilis Bachos
Rating: 5 out of 5
Extension Builder in Muswell Hill
My name is Vasilis and I am an enthusiastic individual who loves what I do. I have 35 years of experience in construction and I am ready to take on any requests! One thing to keep in mind, I don't speak very good English; however rest assured I have way to tackle that minor inconvenience!
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Latest review:
Hard Flooring- 26 Dec 2025
Job done very well. Thank you Vasilis. Changed door lock and toilet seat. Very good time keeper and completed both jobs well.
Dioni construction ltd
Rating: 5 out of 5
Extension Builder in Muswell Hill
Hi there! My name is Drilon and I am a builder who has been in the building trade for over 10 years. I have completed numerous jobs all over London. My company undertake work like extensions,bathroom, kitchen, flooring,loft conversions as well as general refurbishments. My previous customers are always happy with the quality of my work as well as my time keeping and how clean I keep the site during the project. I am based in North London and provide free estimates for all potential projects.
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Latest review:
Loft Conversion- 16 Feb 2023
Very good builders, very kind, I’m absolutely recommending them
O.L.T.O CONSTRUCTION Ltd
Rating: 5 out of 5
Extension Builder in Muswell Hill
we are able to undertake any work that has to do with the interior and exterior of your home. Responsibly!
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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!
Ndreu builders
Rating: 5 out of 5
Extension Builder in Muswell Hill
Hello,I have 23 years working in construction. I am specialised experience within painting and decorating. I also complete domestic and commercial property refurbishments, silicon rendering, driveway and patio installations, plastering and gardening. I mostly take on all kinds of multi trade work. Please don’t hesitate to contact me for any enquiries.
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Latest review:
Handyman- 20 May 2026
He’s friendly and completes the job with care.
Bfc contractors ltd
Rating: 5 out of 5
Extension Builder in Muswell Hill
We offer the best quality and the most reliable prices! If we can not do it ! You don't need it !
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Latest review:
Painting & Decorating- 7 Jan 2026
Very happy with the work. Florin provided a fair quote, gave all the necessary details and is incredibly efficient at what he does. He is honest and hardworking. It is so easy to communicate with him as he is a fast and precise responder. I will definitely recommend. My bathroom looks fantastic! Thank you so much, Florin.
Ermal
Rating: 4.9 out of 5
Extension Builder in Muswell Hill
Name: Ermal Keri
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Latest review:
Plumbing- 23 Jul 2026
Great service. Fast. Reliable.
Macondo Carpentry Ltd
Rating: 5 out of 5
Extension Builder in Muswell Hill
Welcome to Macondo Carpentry Ltd, your trusted partner for all carpentry and building needs in North London. With a commitment to craftsmanship, quality, and customer satisfaction, we specialise in transforming your visions into reality. Whether you’re looking to renovate your home, create bespoke furniture, or undertake a complete building project, our skilled team is here to provide exceptional service and impeccable results. At Macondo Carpentry, we pride ourselves on our attention to detail, use of high-quality materials, and dedication to sustainable practices. Contact us today to discuss your project and discover how Macondo Carpentry can bring your ideas to life. Jobs we specialise in- Kitchens Bathrooms Refurbs 1st & 2nd fix carpentry Tiling General building work
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Latest review:
Carpentry- 28 Oct 2024
Jesse is efficient. Will defo use again.
Adam Favor
Rating: 4.8 out of 5
Extension Builder in Muswell Hill
Our business was founded to offer clients the opportunity to bring a vision to life. As a design & build business we can take your dream home concept and turn it into reality. We will provide you with design plans for your projects and thorough project management. We also have the professional, experienced and quality tradesmen that are essential to complete the construction phase of the project.
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Latest review:
Plastering- 17 Jun 2024
Adam Favor and NOVA Design & Build are a nice bunch of guys and they are reliable/helpful. However, when it came to coving, architrave and flooring, acceptable standards were unfortunately not met. Other specialists had to be brought in to re-do around 20% of the job; namely certain sections of the cornice and door architrave. In the former, a few things were below standard including: 1) not joining the friezes in the correct places, 2) cutting inaccurately, 3) leaving gaps, 4) using silicon as a filler and adhesive. For the door architrave, the wood was misaligned and not glued/nailed properly. The flooring was not laid well because there are huge gaps at times; sometimes at 1 cm. Since the kitchen has been installed, it is too late to take up the floorboards again. The most dubious thing of all in this job was the quote received for decorating which was c. 15k for 47 m2. This included plastering repairs, but ultimately the job got done by someone else to a high standard at 7k.

4.1

Top rated Extension Builders

Our Extension Builders in Muswell Hill, are rated 4.1 out of 5 based on 18 reviews from customers like you.

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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.