Extension Builders in Walham Green

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (19 reviews)

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Some of our top rated extension builders in Walham Green

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CSN construction 4u LTD
Rating: 5 out of 5
Extension Builder in Walham Green
CSN Construction 4u Ltd – Building Your Vision, Brick by Brick! 🏡 At CSN Construction 4u Ltd, we specialize in bringing your dream home projects to life. From house extensions to side extensions, and everything in between, we handle every project with care, expertise, and a commitment to excellence. 🔨 Our Services Include: Home Extensions Side Extensions Loft Conversions Renovations & Refurbishments General Construction Services Whether you're looking to expand your living space, enhance your property’s value, or create something entirely new, our team of skilled professionals is here to make it happen. 📞 Contact us today to discuss your project and get a free quote! Let’s turn your ideas into reality. 👉 CSN Construction 4u Ltd – Quality You Can Trust, Results You’ll Love!
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Latest review:
Extensions- 15 Dec 2025
Very happy with Csn Construction, he responded quickly and started the work quickly, within a week he managed to start the work and complete it! Very resonable price, I highly recommend!
Omerta Builders Limited
Rating: 5 out of 5
Extension Builder in Walham Green
We undertake many jobs and specialise in extensions, loft conversions, painting and decorating, bathrooms, kitchens, and plumbing and electrical works. We work all over London, and have even completed jobs outside of London too. We take pride in the quality work we deliver, and make sure customer satisfaction is at the forefront of what we do. Combined within the company we share 30 years of construction experience.
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Latest review:
Extensions- 11 Jun 2019
Very good builders. Came on time every day and finished work on time. Very reliable and trustworthy. We had quite a few hiccups along the way but they always managed to find a solution. Would definitely recommend them and use them again.
bns construction ltd
Rating: 4.5 out of 5
Extension Builder in Walham Green
Hi me and my partner are very experienced, time served, clean, realiable, and very professional. Carpenter and painter and decorator who are willing to meet your demands of the job, price it reasonably and complete it with a high standard finish leaving you completely satisfied!!
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Latest review:
Carpentry- 12 Dec 2014
Work was completed the next day. Many thanks and will use again. Xx
Hennow Construction
Rating: 5 out of 5
Extension Builder in Walham Green
Hi, we are a small father son business with over 30 years of building experience. As both father and son are bricklayers we tend to take on jobs such as: extensions brick and block work; out buildings; garage conversions; garden walls; patios and drive ways. Formerly Owens Construction, we have now merged with close family friends to expand the brand and become Hennow Construction.
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Latest review:
Bricklaying- 24 Apr 2019
Jake and Harry did an amazing job with our front wall and fence in the rear garden. We got three quotes for the job and they were the cheapest but also came across professionally. It wasn't a straight forward job, it was was using reclaimed materials that were varying size and shapes. I was also quite particular on the look, I wanted the brickwork to match our house, they took care to match the pointing and bricks but offered advice on how we could save money whist still getting the look we wanted. They arrived everyday on time, they were reliable, honest and extremely hardworking. They also kept us in the loop throughout the work making sure we were going to be happy with the end result. I have already recommended them to friends and will use them again for our next project. Thumbs up from us!
Building life uk limited
Rating: 4.8 out of 5
Extension Builder in Walham Green
My skills are :Tiling :brickwork :extensions :loft conversions :partition : painting :carpentry E.t.c :you name it we do it I've got a team together who are hard working men who are very motivated on working together with our clients we always keep everyone who we do work for happy and still get recommended I work references that I can provide (We haven’t been online at my builder over a year now but we have been working out from my builder we got lots of work to prove)
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Latest review:
Bathroom Fitting- 9 Oct 2018
Ozay arrived on time and finish the job to a high standard I've used the shower for over a month now and no leaks! Would use again!
PROJECT RAMS LIMITED
No reviews yet
Extension Builder in Walham Green
Based in London, at Project Rams, we deliver comprehensive building and construction services, covering everything from high-end new builds and extensions to luxury interiors and bespoke finishes. We don’t just get the job done — we build with precision, style, and care. Every project is handled with a keen eye for detail, clean workmanship, and a calm, professional approach. What we offer: • Full building services from start to finish • Stylish, high-spec finishes • A respectful, tidy, and fully insured team • Clear communication and no hidden surprises We understand that inviting builders into your home is a big decision. That’s why we’re committed to making the process smooth, transparent, and stress-free. Most of our work comes through referrals and repeat clients, which reflects our dedication to quality and trust. We treat every home as if it were our own — with care, respect, and attention to detail. If you’re looking for a team that takes pride in delivering high-quality craftsmanship with finesse, shortlist us today and let’s have a chat.
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Darke Builder Ltd
No reviews yet
Extension Builder in Walham Green
MyBuilder is a great company.
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G&j
No reviews yet
Extension Builder in Walham Green
I started my career as decorator in 2019 ,my goal is client satisfaction with a fair price and maintain the quality of my work which I intended to continue.
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Seymour Building Services Limited
Rating: 5 out of 5
Extension Builder in Walham Green
Seymour Building Services would look after your complete project. We would organise all our tradesmen so the right trades are there at the right time. This leaves you with no headaches. Just one number to call for our friendly help and advice.
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Latest review:
Kenny and team did a brilliant job replacing my old lean-to porch area for a new smart extension with windows, door and even a cat flap. They were on time, organised, efficient and took away all the old materials and rubbish. Kenny was helpful when he visited and prompt in replying to all communications and supplying quotes and invoices. I am very happy with their work and wouldn't hesitate to recommend their services.
Adecon Design and Build Ltd
No reviews yet
Extension Builder in Walham Green
Adecon build and design Ltd offer the complete package from design to construction. We specialise in Residential and Commercial sectors. We are problem solvers, an integrated team of Engineers and high skilled builders with extend experience. Regardless the scale or complexity, all projects are important to us, at all stages.
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Kins row build Ltd
No reviews yet
Extension Builder in Walham Green
Welcome to our building company Kings Row Build ( Registered as Kins Row Build LTD), where we specialise in home extensions and loft conversions. With over 10 years of experience in the industry, we have built a strong reputation for delivering high-quality projects that exceed our clients' expectations. Our team of skilled professionals is dedicated to providing exceptional service and craftsmanship, ensuring that every project is completed to the highest standards. Whether you are looking to add extra space to your home with a stylish extension or make the most of your loft space with a conversion, we have the expertise and skills to bring your vision to life. We take pride in our work and strive to create beautiful, functional spaces that enhance the way you live. Our extensive portfolio of successful projects showcases our commitment to excellence and attention to detail. If you are considering a home extension or loft conversion, look no further than our building company. Contact us today to discuss your project and see how we can help you transform your home.
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My Bespoke Bathroom Ltd
No reviews yet
Extension Builder in Walham Green
Ludvik Krnc mastered his skills as a tiler and marble fitter in the South of France, while he honed his expertise in mosaic in Ravenna, Italy. Ludvik has been specialising in the design and creation of superior bespoke bathrooms for over 20 years, his work taking him to Africa, St Tropez, Monte Carlo and all over Europe. The Company employs professional and specialised trades in order to create superior bespoke bathrooms for its clients.
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Hysa Joinery & property maintenance
No reviews yet
Extension Builder in Walham Green
We are a young and dynamic team that cooperates with a network of talented decorators, artists and designers for our various projects under execution. Always close to our clients' needs and with great attention to detail and cost optimisation
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Maxcontractorsint.LTD
Rating: 5 out of 5
Extension Builder in Walham Green
At MaxContractors , we pride ourselves in providing our customers with quality construction services that are tailored to their needs. Our team is highly experienced in the industry and have a great deal of knowledge when it comes to building and renovation. We pay attention to detail and are always willing to go the extra mile to ensure that the job is done to the highest standard. Over the past many years our company has thrived within the domestic as well as commercial building industry. With vast amounts of staff specialising in all areas of the trade, our tradesmen/women boast skill and determination many could only wish of. Having completed thousands of projects, putting smiles on countless of faces we aim to deliver the highest of standards in all aspects of the works and services. Providing quality and great time management throughout each step of this journey. We stand strong beside our clients providing a helping hand so ideas become reality, all while with a peace of mind you kick back and watch your future grow. maxcontractorsint. com
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Latest review:
I was very pleased with the work carried at my property by the team. Project ran smooth and without delay. Highly recommend.
Capital building contractors
Rating: 3 out of 5
Extension Builder in Walham Green
North London based building company committed to provide highest quality service by experienced and highly skilled tradesmen. A team of 3 young tradesmen with an combined experience of over 3 decades in different trades like Carpentry, tiling, painting & decoration, electric and plumbing.
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Latest review:
Bathroom Fitting- 2 Nov 2021
Fair. I think in this stay n age tradesman take jobs that they can’t complete
MMA RENOVATIONS LTD
New on MyBuilder
Extension Builder in Walham Green
MMA Renovations Ltd is a leading UK-based construction and property maintenance company offering a complete range of professional services. We specialize in electrical work, including rewiring and extensions, as well as plumbing services like bathroom and kitchen installations, pipe repairs, and more. Our expertise also includes loft conversions, home extensions, full house renovations, flooring, carpentry, painting and decorating, and general building work. Whether you need a small repair or a complete property makeover, we ensure top-quality workmanship, safety, and customer satisfaction. At MMA Renovations Ltd, we pride ourselves on reliable, affordable, and tailored solutions that bring your vision to life.
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4.4

Top rated Extension Builders

Our Extension Builders in Walham Green, are rated 4.4 out of 5 based on 19 reviews from customers like you.

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What types of services are offered by local extension builders in Walham Green?

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 Walham Green 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 Walham Green who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Walham Green?

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

Find extension builders in Walham Green with MyBuilder

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

Step 2: Compare different extension builders in Walham Green

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

Step 3: Hire Walham Green extension builders with confidence

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

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

What to ask a Walham Green extension builder before hiring?

Before hiring an extension builder in Walham Green or extension building company in Walham Green, 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 Walham Green?

An extension builder in Walham Green 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 Walham Green 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 Walham Green?

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 Walham Green 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 Walham Green 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 Walham Green

Can an extension builder in Walham Green help with planning permission?

Yes, many extension builders in Walham Green 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 Walham Green handle everything from design to construction?

Many Walham Green 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 Walham Green help with materials and finishes?

Yes, most extension builders in Walham Green 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.