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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Krysa Brown Design Limited
No reviews yet
Extension Builder in New Malden
We are Browns Construction, a construction company operating on residential homes in South West London and Surrey.
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Rcv construction
No reviews yet
Extension Builder in New Malden
Hi I'm Constantin I been working in building sites for 10 years now so I do have gain a bit of experience over the years so I do rendering, carpenter, brick work, landscaping, install drainage pipes and driving a digger for more details just call me. Thanks
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Tride & Square Construction Ltd
No reviews yet
Extension Builder in New Malden
I am construction contractor which is based in Kent and Surrey within general building from extensions to loft conversions and specialist brickwork.
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MB BG CONSTRUCTIONS LTD
No reviews yet
Extension Builder in New Malden
Welcome to MB BG CONSTRUCTIONS LTD We are a company based in South London offering the service that we would expect to receive ourselves. Our values run through every aspect of what we do – from the moment you commission us, to the moment we hand over the keys. We offer no obligation quotes for any of the following areas: Roofing Extensions Loft Conversions Garage Conversions Building Renovations Groundwork & Drainage Kitchens & Bathrooms Painting % Decorating
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Home Empower
Rating: 4.8 out of 5
Extension Builder in New Malden
Our construction company specialises in the professional erection of structures of any complexity, Strictly adhering to provided designs. We guarantee high quality construction, timely delivery, and meticulous attention to detail at every stage of project!
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Latest review:
Bricklaying- 23 May 2025
Completed a job for a driveway wall, but was very rude, unprofessional and aggressive when asked a quote for a follow-up job. Conversation attached.
Jujhar global limited
Rating: 5 out of 5
Extension Builder in New Malden
I am sarbjeet singh. I do all building works with confidence. You can check my work on google Jujhar global limited (@srbkmlgcjfs)
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Latest review:
Fencing- 29 Sep 2024
Very nice work . They expert in each building work . I would highly recommend you. Also very cooperative team.
Particle Construction LTD
No reviews yet
Extension Builder in New Malden
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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iko 16 ltd
No reviews yet
Extension Builder in New Malden
IKO 16 ltd is a general contracting company specializing in residential renovations and additions. We are a full-service company dedicated to quality construction and client satisfaction. Our goal is to provide our clients with a high-quality finished product and a positive remodeling experience.
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KES Construction (London) Ltd
No reviews yet
Extension Builder in New Malden
Operating in South London and North Surrey, we have years of experience in building and implementing loft conversions, extensions, kitchen installations, bathrooms and carpentry. A company that takes pride in its work, always wanting the best result for our client, we take you through each stage of the project - whatever the size and complexity, from a book shelf to a full house refurbishment.
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Fornes Limited
Rating: 5 out of 5
Extension Builder in New Malden
No matter what size your requirements are, we provide a complete project management and a full turnkey service from simple kitchen or bathroom make up to more complex projects and skilled finishes like Mediterranean style. No hidden costs and all jobs guaranteed. We speak English and Spanish.
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Latest review:
I've used Facundo's team to install a new shower, including wall and floor tiling, massage jets, and concealed shower equipment. Facundo was the person we dealt with at all times, although someone else was assigned to do the job. The quality of the work and finish is extremely good. I was also impressed with Facundo's professional attitude at all times, being very polite and respectful, as well as proactive in addressing any potential issues affecting our planning and execution. Highly recommended.
OLIVEIRAS CONSTRUCTION LIMITED
No reviews yet
Extension Builder in New Malden
Oliveiras is a construction services provider, we serve companies, decorators, architects and clients in general with excellence. Oliveiras is made up of a team of qualified professionals. Oliveiras Construction offers excellence in work, bringing dignity, agility and commitment. Our professionals have unique skills, from foundation to finishing. We are always available to do whatever is necessary to evolve more each day, bringing what is most current on the market.
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A.I.M Property Improvements Ltd
Rating: 4.9 out of 5
Extension Builder in New Malden
We are a family ran building company with many years experience combined. Our team are professional and hard working, we aim to provide the best service at competitive rates to all our customers whether the job is big or small. FREE QUOTES with no obligation! What we do: • Kitchen fitting • Bathroom fitting • Refurbishments • Extensions • Loft conversions • Carpentry • Plumbing • Electrics • Painting & decorating • Plastering & rendering
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Latest review:
Restoration & Refurbishment- 25 Sep 2025
We were over the moon with our kitchen once Zihni and his team had finished. We had never used this firm before but we will definitely be using them again for future projects. Zihni is calm, knowledgeable, and went over and beyond in helping us not just complete our kitchen project, but in helping us move into a new home smoothly. We are also really appreciative of the rest of his team, as they were all so serious, professional and perfectionists. Zihni's communication was probably the single reason why the completion of our kitchen was such a success.
P.S. Building Projects Ltd
Rating: 5 out of 5
Extension Builder in New Malden
"WE ARE A HOME EXTENSION AND LOFT CONVERSION SPECIALIST. WE ALSO OFFER A COMPLETE BUILDING SERVICE! A family-run business, Quick growing building company with more than 20 yrs building experience. And we’ve been providing the highest quality work for our customers ever since. Everyone here at P.S.Building Projects Ltd is dedicated to meeting your specific requirements, delivering bespoke work on budget and on time. Which means you’ll enjoy peace of mind from start to finish."
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Latest review:
Conversions - General- 11 Oct 2022
We've been seriously impressed with Pawel and his team. They opened up our rear dining room/kitchen wall using an RSJ, following our engineer's drawings perfectly. They also did a few bits of plumbing and bricked up one of the windows at the rear, which is where the new kitchen will be fitted. They were incredibly tidy and really pleasant and courteous to be around, which my wife was so grateful for given we live in a busy family house (most builders are not like this...), I can't thank them enough! We will definitely be using them again in the not-so-distant future!
Project-Wise
Rating: 5 out of 5
Extension Builder in New Malden
We offer a friendly reliable service that is second to none and can put you in contact lots of past clients who will give us glowing references on request. I have spent 30 years in the building industry, a time served bricklayer who has gained a very good knowledge of all aspects involved and trade requirements. This is why I offer a service you can rely on and guarantee all our work, which is carried out to the highest standard.
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Latest review:
Extensions- 6 Jan 2016
Dave has done excellent work at a fair price. His communication is excellent and he kept me informed of everything going on at all times. I would happily hire Dave again.
Hubble Property Ltd
Rating: 5 out of 5
Extension Builder in New Malden
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.
KBS London Ltd
Rating: 5 out of 5
Extension Builder in New Malden
We are a North London Carpentry and General building company. I am a Qualified Carpenter from New Zealand, I have 30 years experience with 20 in London. We can carry out all works on residential, retail and commercial projects, from strip out to completion. We have a network of tried and proven tradesmen and suppliers. We are Quick Clean happy to work out of hours if necessary. I will do you a free quotation and happy to discuss works and guide you if necessary. Karl
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Latest review:
Carpentry- 8 Jun 2026
Responsive and good communication - delivered the job as planned and quoted. Would recommend.

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.

Quality screening

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 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.