Extension Builders in Walham Green

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (19 reviews)

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Some of our top rated extension builders in Walham Green

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G&J Renovation ltd
Rating: 4.7 out of 5
Extension Builder in Walham Green
G&J Renovations ltd provides best quality of work as extension refurbishment new build painting plastring loft conversion and all building work
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Latest review:
Restoration & Refurbishment- 4 Mar 2026
Gurpreet and his team done my whole house renovation. Including the kitchen roof, new ceilings, skim/plaster all rooms, new tiles and flooring, all new wiring for the house, change the boiler location and fitted a new boiler .. have absolutely loved this team, especially Gurpreet. . The guy is always there to answer and follow up on any work . The work has been completed to the highest quality and really a trusted and a professional team !!... Even after the work is done, there will be few things but you can contact Gurpreet and he will sort it out for you... Overall a great experience working with this team !! ..I will be looking to get this team for all my future works !!!
Jake Gillam Carpentry
No reviews yet
Extension Builder in Walham Green
I'm a carpenter based in South West London with 10 years experience in the trade. I am flexible in the jobs I undertake and my work is to a high standard. I offer a friendly and reliable service.
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LW Building Service
Rating: 5 out of 5
Extension Builder in Walham Green
We are a medium sized company based in and around Croydon - specialising in a number of services ranging from full kitchen and living space extensions to bathroom and kitchen remodeling/refitting. As a company we are committed to the customer - ensuring the highest standard of professionalism and quality in our projects all of which are insured and compliant with all current building regulations.
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Latest review:
Kitchen Fitting- 7 Jan 2021
My experience with Leszek was entirely positive and I wholeheartedly recommend him. I had recently moved property (converted victorian flat) and required a new kitchen installed, shelves built, radiators replaced, painting throughout and some changes to electrics. The work was undertaken around October 2020. Leszek completed the work to a very high and professional standard and I am really happy with the end result. He was easy to get on with, good natured and commutative which made the whole process easy and less stressful for my first experience in home improvements. Leszek was always happy to answer all my questions and further explain the fine detail from electrics to kitchen installation. When small problems arose, he always had a couple options ready to discuss and called promptly to keep me up to date. The kitchen installation is perfect which also included tiling a backsplash. Lezek built some lovely selves in the recesses either side of my fireplace which look brilliant and very smart. The painter and his work was really professional and speedy. Snagging was dealt with and two neighbours independently and proactively commented that the work was done with minimal disturbance to them. From quote to completion it was all in all an excellent experience!
ASAP RENOVATION LIMITED
No reviews yet
Extension Builder in Walham Green
We are ASAP Renovation Ltd. Our team has over 10 years of building experience in and around the capital, putting you and your project in the safest of hands. Our building expertise is backed up by our very own network of trusted suppliers, giving us the ability to deliver to a high standard on any task you require. From the construction of an extension or bathroom or even complete house renovations in London, there's no better choice to see your home dreams brought to life.
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KACA CONSTRUCTION LTD
Rating: 4.8 out of 5
Extension Builder in Walham Green
Kaca construction Ltd is a prospective, family run building company based in London . We supply high quality services in residential construction field. We work closely with our customers, designers and architects to make sure we meet the clients’ expectations. We listen, understand and deliver what the client wants from the point of the planning to the point of delivering your dream home. Our team is offering all the general building work, we specialize in extensions, lofts, exterior and interior work. we have complete team of professionals including architects, engineers and designers to provide end-to-end services, also we can help with applications for the local authorities and building regulation services. All work is fully insured and guaranteed for your peace of mind. We pride ourselves in a great customer service and our reliability. So if you're looking for a construction company in London with many years’ experience in the construction trade then look no further than Kaca Construction Ltd. Whether it’s a query or a quote we would be very happy to assist you. We cover all London area and near by .
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Latest review:
Extensions- 19 Nov 2019
We have found Kaca Construction to be a reliable and trustworthy building company with good quality workmanship. The director Elson was always available to address any queries and was responsive to our needs. Kwesi and Ros.
JED BUILDERS LTD
Rating: 5 out of 5
Extension Builder in Walham Green
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
Denis Osan
No reviews yet
Extension Builder in Walham Green
I am a self-motivated individual with a strong aptitude for initiative and problem solving, consistently delivering results with meticulous accuracy and thoroughness. I leverage strong time management and skills to balance multiple priorities.
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Edmond Buci
No reviews yet
Extension Builder in Walham Green
Hi, I’m Edmond, a reliable carpenter and builder with over 11 years of experience. I specialise in joinery, roofing, loft conversions, wood flooring, and door fitting. I’m known for clean, high-quality work, good communication, and finishing jobs on time. Whether it’s a small repair or a full home improvement project, I take pride in every job and always aim to deliver great results.
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Liskerrin Limited
No reviews yet
Extension Builder in Walham Green
Liskerrin is a multi-disciplinary property and construction company. Based in London, we specialise in small to medium sized fit-out projects in commercial, retail and residential sectors. With experienced in-house designers and project managers, we offer a complete service from initial concept design to construction on site.
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Woodlake Building Contractors
Rating: 5 out of 5
Extension Builder in Walham Green
About us: We are a General Building Company, established in 2000 specialising in Home Extensions, Loft Conversions and Full Home Renovations. Our workmanship and reliability are the firm standards which we have built our company reputation upon, to deliver a high quality product and value to our customers homes. We pride ourselves for having qualified tradesmen in our team who have been working together with us for many years. Our projects are delivered on time and within budget.
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Latest review:
Carpentry- 3 Apr 2021
I am really pleased with the work woodlake have done in my flat. Gudarz and Darius have done a brilliant job. The flooring and painting is to a very high standard and it has really transformed the space. Very professional and great work ethic.
Hubble Property Ltd
Rating: 5 out of 5
Extension Builder in Walham Green
We are a trusted landscaping and construction company dedicated to transforming spaces with innovative ideas while honouring traditional craftsmanship. As a proud holder of a Trust Mark ( government endorsed Contruction quality standards ) & member of Federation of Master Builders, we ensure that our projects meet the highest standards of quality and reliability. Our Mission: We aim to create contemporary, functional environments by merging cutting-edge techniques with time-honoured values. Our team of skilled professionals is committed to delivering exceptional results that reflect our clients' vision, whether through stunning landscapes or durable construction projects. What We Offer: Innovative Designs: Utilising the latest technology and creative solutions to bring your ideas to life. Quality Craftsmanship: Maintaining traditional building values to ensure lasting durability and aesthetic appeal. Client-Centric Approach: Working closely with you throughout the process to ensure your complete satisfaction. Let us help you build and nurture the spaces you love!
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Latest review:
Extensions- 6 Oct 2022
I was lucky enough to have Haroun on this project of side extension and outside building. He is such a professional guy and always committed to do his work up to the standard. He has been very nice to us and always responded whenever asked to do additional jobs. He is very honest and trustworthy and his team has been very wonderful. I'm very happy with work he did in the house and would hire him again should the necessity arise in future.
George
Rating: 5 out of 5
Extension Builder in Walham Green
I am a NVQ level 2 bricklayer and stonemason with over 20 years of experience. As a professional experienced bricklayer, I can set out and undertake all types of brickwork, stonework and blockwork from garden walls to new houses. I pride myself on my work, so I focus on customer satisfaction and quality workmanship. All work is carried out to a high standard. I understand how hard it is to find a trustworthy and reliable tradesman. Hence when I start a job, I stay until it is finished.
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Latest review:
Bricklaying- 6 Jun 2026
The job was two small garden walls. George explained how the job would be carried out. He is friendly and turns up on time. He is a skilled worker and did a fantasic job. Would recommend George
Particle Construction LTD
No reviews yet
Extension Builder in Walham Green
New to MyBuilder Particle Construction is a full-service construction firm specializing in all aspects of building work, from initial extensions to final finishes. With a focus on delivering high-quality results, we handle projects of varying sizes and complexities, ensuring every detail meets the highest standards. Whether it's expanding existing spaces or completing intricate interior finishes, our team combines expertise, craftsmanship, and attention to detail to deliver exceptional outcomes for every client
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All in one builders
Rating: 5 out of 5
Extension Builder in Walham Green
At All In One Builders we take pride in being your trusted partner for all your construction needs. With a wealth of experience and a commitment to excellence, we specialise in a wide range of building services tailored to meet your unique requirements.
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Latest review:
Akash made sure the job was complete exactly how he said it would be, he provided reliability during the installation of our kitchen and answered all questions very professionally. The builders were well aware of the conversations my mother and I had with Akash and so put our mind at ease. The installation itself was very quick (the tear down was very much completed in a few hours) and installed over the weekend. They were very hygiene aware and set up a cover between the kitchen and the rest of our house and didn’t disrupt our home living. They cleaned up before they were gone to very high standards without us even asking them too, all I’m sure is due to Akash’s excellent organisation skills.
Guardian Angels Property Ltd.
No reviews yet
Extension Builder in Walham Green
Property development company. All types of brickwork and blockwork. Painting and decorating. Refurb and renovations. No job too big. Diligent, honest & hardworking.
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ScutariConstruction
Rating: 5 out of 5
Extension Builder in Walham Green
Scutari Construction is a limited company based in London. We are a very reliable and professional team of tradesmen with over 10 years of experience on the building industry, committed to deliver the highest levels of quality and service to our clients.
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Latest review:
Extensions- 14 Apr 2021
Mel and team completely transformed our house in a very timely and professional manner. I honestly cannot say enough good things about him. The team works really hard and their model provides the fastest, highest quality construction at a reasonable price. Use these guys!

4.2

Top rated Extension Builders

Our Extension Builders in Walham Green, are rated 4.2 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.