Extension Builders in New Malden

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (22 reviews)

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Some of our top rated extension builders in New Malden

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Epsom and Ewell Carpentry and Construction
No reviews yet
Extension Builder in New Malden
Welcome to Epsom & Ewell Carpentry & Construction. We have partnered with Homeowners, Architects & Designers to deliver impeccable Renovation, Construction & Refurbishment services.
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ALMO Property Group Limited
Rating: 5 out of 5
Extension Builder in New Malden
ALMO Property Group delivers comprehensive property services, from maintenance and renovations to consultancy and management, with efficiency, expertise, and attention to detail. Backed by experienced professionals and full insurance coverage, we provide a dependable service, clear communication, and consistently high standards on every project, with a focus on providing value for all our clients.
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Latest review:
We recently completed a full house refurbishment including a 4-metre rear extension, dormer loft conversion, and complete interior renovation with ALMO Property Group—and I genuinely couldn’t recommend them more highly. From the very beginning, the team managed everything seamlessly, from planning and design through to execution. What could have been an incredibly stressful process was made smooth, organised, and surprisingly enjoyable thanks to their professionalism, communication, and attention to detail. The quality of workmanship throughout the project has been exceptional. Every stage was handled with care, precision, and a clear commitment to delivering a high-end finish. The team were reliable, efficient, and always kept us informed, which gave us real peace of mind. A special mention has to go to Ameer, who was absolutely outstanding from start to finish. His dedication, responsiveness, and willingness to go above and beyond made a huge difference. He was always on hand to answer questions, offer solutions, and ensure everything ran perfectly. ALMO Property Group have completely transformed our house into a beautiful home, and we are beyond happy with the results. If you’re looking for a trustworthy, skilled, and professional team, I would highly recommend them.
LS London Contractors
No reviews yet
Extension Builder in New Malden
LS London Contractors - Experienced and friendly team, located in South West London, specialising in extensions, loft conversions and all refurbishment works to a high standard finish for customers.
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ACVBuilding Services
Rating: 4.7 out of 5
Extension Builder in New Malden
We are an experienced, friendly and local building company who can help with all your home improvements, whether it be a new bathroom, kitchen, plumbing job, painting and decorating or a complete refurbishment We guarantee all our work and are covered by Public Liability Insurance.
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Latest review:
Bathroom Fitting- 28 May 2016
I can highly recommend Lino and his team, he was polite and honest which is a rare find. Lino was very thorough in completing the job to a high standard and went the extra mile and did some pieces of work without charge. If your looking for a builder with multiple skills, give Lino a call, you won't be disappointed. I Look forward to hiring Lino again and will definitely be passing his number around. Mr Khan
Dana Business Group LTD
No reviews yet
Extension Builder in New Malden
Dana Business Group Ltd – Property Renovation, Extensions & Loft Conversions Dana Business Group Ltd provides professional renovation, construction, and repair services for houses and apartments. We undertake projects of any size, from small repairs to full refurbishments, house extensions, and loft conversions. Our services include: * Full and partial property renovations * House extensions and structural works * Loft conversions * Kitchen and bathroom fitting * Plumbing services * Electrical works * Painting and decorating * Flooring installation * Plastering and drywall * General maintenance and repairs We guarantee high-quality workmanship, reliable service, and strong attention to detail. Free quotes available. Competitive prices. Flexible scheduling.
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GB CONSTRUCTION GENERAL BUILDERS LTD
No reviews yet
Extension Builder in New Malden
Introducing myself, I bring over 15 years of expertise as a multi-trade builder, committed to delivering top-notch craftsmanship and tailored solutions to meet your needs. With a proven track record of professionalism, attention to detail, and customer satisfaction, I strive to exceed expectations in every project. Let's build your vision together with precision and reliability.
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Lopoconstruction
No reviews yet
Extension Builder in New Malden
I'm undertaking all type of building and decorating jobs
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Kadion Building Services
No reviews yet
Extension Builder in New Malden
Our company prides itself on customer service and high quality work delivery. Providing a wide range of building services including extensions, loft conversions, renovations and porch building. Skilled and experienced tradesman that worked also on gutter, fencing and decking installations - as well other handyman requests needed. Mainly covers Carshalton, Sutton, Cheam, Wimbledon, Croydon, Morden, Mitcham, Wallington and Epsom areas. Provides free non-obligation quotes.
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JMC Building Solutions
Rating: 5 out of 5
Extension Builder in New Malden
My company has been running for 10 years now generally relying on word of mouth and building relation ships with clients , my previous works cover almost everything you can imagine from house extensions to swimming pools you name it happy to help in all aspects of Buiding we also have an internal team to cover all works inside ! The complete package !!
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Latest review:
Extensions- 2 Nov 2023
I asked Jamie and his team to help me erect my garden room this autumn and I could not be happier with the result. Jamie understood the brief immediately, was clear about pricing and responsive via text. He and his crew turned up on time, worked hard to offload and build the structure and were good humoured and polite to boot. They clearly take pride in their work and I wouldn't hesitate to use them again.
professional polish builder(london)
Rating: 5 out of 5
Extension Builder in New Malden
I'm a builder (carpenter) with 19 years of experience in England. I do loft conversions and extensions - all building works. Carpentry and joinery is my main profession. I have a qualified bricklayer, electrician, plumber and others on my team who are happy to help. All works done by us coming with warranty and insurance.Dear potential client beware that we do not undertake structural building works without architectural drawings, structural engineer calculations etc. No time wasters please!
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Latest review:
Extensions- 26 Apr 2018
Professional Polish builders (london) ltd,?this is a suitable name for this company. They built an extension and loft for me in the time standards set. They aren’t a cheap service but the professionalism of this boys goes beyond and above. I’ve seen a lot in my life and it was the third extension I designed for myself as I’m architect. It is hard to find an honest builder who will tell you the truth about what is waiting for you during the works. The job was done relatively quickly even when I changed my mind a few times and the weather this winter was cruel but Adam and Martin were always positive so do not believe any one who gives a fixed price and time - it’s impossible to do. Adam and Martin are fantastic organizers and skillful professional builders, his team are friendly,very funny and hard working guys. Open minded guys who will tell you straight on what things you can save money on and what not to. My dog has fallen in love with them. Safety and common sense is a priority to the crew. I would recommend these boys to everyone. thanks for your help and hard work!
Venus Constructions Ltd
Rating: 5 out of 5
Extension Builder in New Malden
Hi, thanks for taking time reading.. our team at Venus Constructions specialises in all types of residential works and our range of services covers complete refurbishment, conversions, external buildings, patio, turf, driveway, decking, fencing, brickwork, blockwork, rendering. Depends of team member we have years and the necessary experience based on the works needed. Listening to the clients needs we assure with punctuality high quality results and workmanship of our friendly team.
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Latest review:
Landscaping- 28 Mar 2022
Gianni and his friend did an amazing job on our garden grass and planter. They came to see the garden before providing us with the quote. They were very professional, punctual thorough and quick. We were very impressed that they started the job the following day and that they were able to provide all the materials. We will definitely recommend them to friends and family.
G2 Brothers Construction
Rating: 5 out of 5
Extension Builder in New Malden
G2 Brothers Construction is a family business, we undertake all aspects of building works to an exceptional standard. Working with clients to bring their vision to life is our priority & we pride ourselves in being honest, efficient, reliable & professional whilst doing so. We carry out all types of building works from New builds, Extensions, Garages, Driveways, Roofing, to installing kitchens & bathrooms. Two honest builders based in Warlingham/Surrey.
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Latest review:
Kitchen Fitting- 12 Nov 2022
I am so happy with the work and professionalism of Tom and James. I had queried several companies and decided to work with G2 brothers based on how open and honest they were on the first visit for estimation of work. We discussed the work I wanted done, which was to replace the cabinets in the kitchen. We also discussed the budget I had and what the overall look I was going for. Throughout the whole project we discussed options, impacts and agreed together on next steps. They were a pleasure to work with, I will definitely use their services again. Great work!!!
Stevenmcfaddenandson
No reviews yet
Extension Builder in New Malden
Hi my name is Steven I’ve been in construction since Ive over 20 years work experience . I have many trades under my belt /Groundwork/ landscaping/ Building basements/ Carpentry /Roofing/ Reinforced concrete and form work .With work to a high standard and professional working environment
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Highpoint roofing and building contractors
Rating: 5 out of 5
Extension Builder in New Malden
At Highpoint roofing and building contractors we have over 40 years of experience Collectively, we take pride in our work to ensure 100% customer satisfaction With our free no obligation quotation you will be given all the advice you need to ensure total piece of mind our goal is to meet and exceed expectations of every customer all work carried out to the highest Possible standards and at very competitive prices
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Latest review:
Roofing (Flat)- 6 Jan 2026
Completed the job as promised and was very tidy in his job
G SINGH
Rating: 5 out of 5
Extension Builder in New Malden
G SINGH BUILD is your trusted partner for high-quality home improvement and building services. Specializing in carpentry, bathroom fitting, fencing, gutter installation, driveways, and a wide range of general building work, we bring skill, reliability, and craftsmanship to every project. Whether you're renovating your bathroom, upgrading outdoor spaces, or tackling a full home improvement job, G SINGH BUILD delivers durable, precise, and beautifully finished results—on time and on budget. We take pride in turning your vision into reality with a commitment to excellence and customer satisfaction.
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Latest review:
Painting & Decorating- 26 Mar 2025
G singh gaves me an excellent job more than my expectation and helped me a lot as i dknt know much about construction work thanks G SINGH
13-13 BUILDERS LTD
Rating: 4.5 out of 5
Extension Builder in New Malden
I do plastering, plaster board, carpentry, partition, roofing, groundwork’s, driveways, gardening, extension, loft conversions
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Latest review:
Carpentry- 25 Apr 2026
Very helpful, fixed my front door sill and other odd jobs around the house. Would call again and good quality

4.2

Top rated Extension Builders

Our Extension Builders in New Malden, are rated 4.2 out of 5 based on 22 reviews from customers like you.

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What types of services are offered by local extension builders in New Malden?

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 New Malden 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 New Malden who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in New Malden?

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

Find extension builders in New Malden with MyBuilder

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

Step 2: Compare different extension builders in New Malden

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

Step 3: Hire New Malden extension builders with confidence

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

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

What to ask a New Malden extension builder before hiring?

Before hiring an extension builder in New Malden or extension building company in New Malden, 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 New Malden?

An extension builder in New Malden 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 New Malden 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 New Malden?

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 New Malden 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 New Malden 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 New Malden

Can an extension builder in New Malden help with planning permission?

Yes, many extension builders in New Malden 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 New Malden handle everything from design to construction?

Many New Malden 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 New Malden help with materials and finishes?

Yes, most extension builders in New Malden 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.