Extension builders in Carshalton

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (19 reviews)

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Some of our top rated extension builders in Carshalton

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PB BUILDER LTD
Rating: 4.7 out of 5
Extension Builder in Carshalton
I have a over 19 years experience as a multitrader in building industry. From 9 years I have LTD company and few teams of my guys. We do big and small projects like: house extensions, full house refurbishment,loft conversions,kitchen and bathrooms fittings, all type of carpentry work,blocks and pavings,fencing, painting and decorating,plumbing and electric jobs.
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Latest review:
Extensions- 8 Sep 2024
Paulo and his team, was so lovely, they got on with the job, complete it very quickly and was very patience with the delays so had to came back and finish the job. Would definitely call Paulo back for other work around the house
Happy Building London Ltd
Rating: 5 out of 5
Extension Builder in Carshalton
Hello, We’re an architectural design and construction management company with a love of creative inspiration. We help turn dreams and visions into reality for people who aspire to live in exceptional contemporary spaces. Big ideas are our thing. Along with expertly costed build packages. Then there’s our end-to-end project management service, perfect for people who want to leave nothing to chance.
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Latest review:
Restoration & Refurbishment- 17 Jul 2016
Valter was very impressive on his initial visit with some exciting ideas for the house improvements and we had no hesitation in choosing Happy Building above the other two building firms who quoted. Having signed off on the budget and scope of work, Valter's team of builders arrived. We were hugely impressed with the skill, experience and work ethic of the team; the fact that they arrived early each morning smiling underlined the "Happy Building" epithet; Jarek, the site foreman, had an especially cheery demeanour. The work involved stripping the walls back to bricks, removing walls, reinforcing foundations, plastering, extending the bathroom and removing one bedroom to create a large ensuite bedroom. The latter certainly would not have been done without Valter's vision and patience in explaining how it would look. We were able to deviate from the original plans without any problem which was very important in achieving the final look which we had desired. Valter was very careful in sticking to time and budgets which I had never experienced before with builders. The kitchen, bathroom, two bedrooms, living room and hallways were finished to the highest possible specification within our budget. There were one or two small features which, with hindsight, we would have improved such as door handles and shower fittings, however this was down to us not specifying exactly what we wanted. These are very minor details and a tiny part of the overall picture.
RELIABLE BUILDING CONTRACTORS LTD
Rating: 5 out of 5
Extension Builder in Carshalton
We have over 16 years experience on building site. Providing a professional and high quality service with warranty. New extension, Renovation, perfect kitchen, bathroom, plastering, decorating, electrical and plumbing .We can supply the material.
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Latest review:
Kitchen Fitting- 11 Oct 2018
Mohsen went above and beyond with our kitchen face lift. He did exactly as asked, to a very professional standard. Mohsen is very hard working, has high standards and was reliable. He also suggested ways to improve our kitchen, and corrected some previous poor work from other builders! We love the job and will definitely use Mohsen and his team again for future work.
Jozeph
Rating: 5 out of 5
Extension Builder in Carshalton
I am a professional and reliable tradesman who works to very high standards, these standards have helped me to build up an excellent reputation with regards to all work that I have carried out. Please request a quote through mybuilder.com for a free and honest estimate ,painting decorating ,loft ,extension ,kitchen ,bathroom ,carpenter etc.
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Latest review:
Handyman- 3 Oct 2015
Fast, efficient, friendly builder. Very skilful, quality work at a reasonable price. Couldn't be happier. Fully recommend Jozeph. Emma & Emanuel
Ins Projects Limited
Rating: 4.9 out of 5
Extension Builder in Carshalton
Initially, our endeavors focused on smaller-scale projects, encompassing garden wall constructions, minor apartment refurbishments, bathroom renovations, and kitchen installations. This foundational period allowed us to cultivate extensive experience with material suppliers, municipal building inspectorates, and to foster strong client relationships. Building upon this foundation, we have evolved into a construction firm specializing in building extensions, loft conversions, and comprehensive house renovations. Over time, our dedication to meticulous work and exceptional organizational practices has established a distinguished company reputation. Our services encompass the structural construction of new projects, alongside associated electrical and plumbing installations, and all categories of finishing construction and installation works. We manage the entire construction process, from inception to the final handover of keys. We provide a structural guarantee for newly constructed sites, and upon client request, we furnish all requisite certifications. Our pricing is competitive, and we consistently demonstrate a client-centric approach.
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Latest review:
Bricklaying- 27 Jun 2022
Ivan got the job done quickly and efficiently, he done a good job and we have used him for other future projects :)
Cheam Building Contractors
Rating: 4.6 out of 5
Extension Builder in Carshalton
Fully qualified builder with over 25 years experience of building in London and Surrey,fully insured with competitive rates.multi tradesman with extensive knowledge on all aspects of building work.
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Latest review:
Extensions- 18 Dec 2019
What a wonderful extension Dan has built for my family and I! Everyone who visits us comments on how lovely it looks - we are extremely happy! From the moment I spoke/met with Dan I knew he would be the builder I would assign for this project. He was friendly, knowledgeable and spent time explaining the work which he would conduct. Dan and his team were always on time and worked hard all day. As promised, Dan completed the job on time and to budget. As with any build, we did encounter some issues, although Dan resolved these without any problems. I would 100% recommend Dan and his team! Give them a try, you'll be pleasantly surprised! Thank you Dan and co.
BKFS LTD
Rating: 5 out of 5
Extension Builder in Carshalton
Work undertaking includes; Joinery, Kitchen and bathroom installation. Electrical NIC EIC approved contractor Gas safe Plastering, Painting, Tiling, Specialised in Bespoke wardrobes. Granite, Marble and Quartz Worktops. Wet room
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Latest review:
Tiling- 3 Jan 2025
Job completed in a very friendly and professional manner. Highly recommended. Once again, thank you Raghed!
RTK Carpentry
Rating: 5 out of 5
Extension Builder in Carshalton
We will see the job from start to finish with a price that's fair. I have worked within care homes for the last two years hanging fire doors with certification from BRE Academy on fire door fitting. I have been in the trade for 10 years. I am based in Surrey and can cover South London.
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Latest review:
Carpentry- 27 Oct 2021
Ryan is absolutely fantastic. Whilst new to mybuilder, it doesn't mean he's new to the world of carpentry. His work ethic is second to none and quality of work meticulous! We absolutely love our new flooring and it's been put down so incredibly well. He was also able to advise us on lots of different future jobs and offer quotes for these too. All very reasonable considering the quality this guy's works to. Hands down worth that little bit more to employ Ryan, you won't be disappointed one bit!
Miranda flooring
Rating: 5 out of 5
Extension Builder in Carshalton
Reliable painting, gardening, flooring, and handyman services. Quality work, fair prices, and timely completion. Free quotes available. Ready to help with your project!
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Latest review:
Repainted my living room and 2 bedrooms. Happy with service, everything was done to a high quality finish. The guys were lovely, will definitely recommend!
J & M loft conversion ltd
Rating: 5 out of 5
Extension Builder in Carshalton
I’m a skilled landscaper with experience in designing and creating outdoor spaces that are both functional and visually appealing. From turfing and patios to fencing, planting, and garden maintenance, I take pride in delivering high-quality work with attention to detail. My goal is to transform outdoor areas into spaces homeowners can enjoy all year round. Reliable, hardworking, and customer-focused, I ensure every project is completed to the highest standard.
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Latest review:
Fencing- 16 Oct 2026
Jay is great! Friendly, helpful, and very honest. I’ll definitely contact him again and highly recommend him for any type of job. Don't hesitate to reach out!
Poplar construction UK ltd
Rating: 5 out of 5
Extension Builder in Carshalton
Poplar Construction have been established since the millennium.A local experienced contractor backed by insurance and the piece of mind that the company annually delivers certified company accounts . We have a built up a reputation with Architects and the local Authority . The company has an extensive client base with work ranging from refurbishment/ alterations to extensions . Our carpentry is extensive and we have a website displaying our bespoke range of wardrobes and alcove units / shelving bespoke . Our service is client friendly where we control payments according to the work delivered and do not look for unreasonable deposits . The business delivers good honest estimates at a reasonable cost with a reputation for delivering high quality and punctual work .
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Latest review:
Carpentry- 27 Jun 2026
Excellent service from start to finish. The team boxed in my gas pipe neatly, and the finished result looks great.
Ben the builder
Rating: 5 out of 5
Extension Builder in Carshalton
Extension Loft conversion Landscaping General building work
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Latest review:
Benny and his team rebuilt our bungalow to our architect's design. Complete internal reconfiguration, refurbishment and insulation (internal and external), extension, new bathrooms, kitchen; detached garage, outbuilding and landscaping. His pricing was very fair. His work outstanding. Very reliable, utterly trustworthy, courteous, very helpful and professional. Answered our prayers and cannot be recommended highly enough
GA Builds
Rating: 5 out of 5
Extension Builder in Carshalton
For half a decade, G&A Construction LTD has been at the forefront of redefining living experiences through our unwavering commitment to excellence in construction. As a premier provider of bespoke building solutions, we take pride in offering a comprehensive suite of services tailored to meet the diverse needs of our clients. From revitalizing tired interiors to expanding living spaces with loft conversions, our expertise spans the spectrum of home improvement. Our kitchen refurbishment services breathe new life into the heart of your home, while our bathroom refurbishment transforms ordinary washrooms into luxurious sanctuaries of relaxation. At G-A Build, we understand that the true beauty of a home lies in the details. That's why our painting and decorating services are executed with precision and finesse, ensuring every brushstroke reflects your unique style and personality. Our plastering and rendering expertise create smooth, flawless surfaces that serve as the perfect canvas for your design dreams to unfold. But our dedication to craftsmanship doesn't stop there. With our carpentry services, we bring timeless elegance and functionality to every corner of your home. Whether it's intricate woodwork or bespoke cabinetry, our skilled craftsmen deliver unparalleled quality and craftsmanship. Beyond aesthetics, we also specialize in restoring the structural integrity of your home. From brick cleaning and repair to repointing and stone restoration, our meticulous attention to detail ensures that your home stands the test of time, retaining its beauty and value for years to come. At G-A Build, our success is measured not only by the projects we complete but by the relationships we build along the way. For five years, we've been privileged to work with clients who trust us to bring their visions to life. As we embark on the next chapter of our journey, we remain steadfast in our commitment to excellence, innovation, and exceeding expectations every step of the way.
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Latest review:
Gerti completely renovated both of our bathrooms, and the final results were absolutely amazing—exactly what we wanted. He was extremely flexible, offered valuable advice for other aspects of our home, and consistently went above and beyond. Having done a lot of work on our house, we can confidently say he is the best builder we’ve worked with. His pricing was very reasonable, and we will definitely use him for future projects.
Amberfield Construction
Rating: 5 out of 5
Extension Builder in Carshalton
Amberfield Construction is a London-based construction company built on genuine industry experience. We specialise in residential refurbishments, renovations and extensions, alongside selected commercial projects. We understand that choosing a builder is about more than the finished result—it is also about trusting the people working in your property. We take time to understand each project, provide a clear scope and transparent pricing, and keep our clients informed from the first visit through to completion. Our approach is careful, collaborative and focused on detail. We value honest advice, respectful and well-organised sites, and quality in both the finishes you see and the work behind them. Good design deserves good construction. If you are looking for a team that will listen, communicate clearly and treat your project with care, we would be pleased to discuss it with you.
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Latest review:
Really good work. Knowledgeable people who knew what they were doing. No issues. They did a makeover of our house. Reasonable price, we’ve settled in and are a couple of month post-renovation now. So I can confirm it was a great service.
MME Contractors Ltd
Rating: 5 out of 5
Extension Builder in Carshalton
MME have been established for over 17 years we have worked on both commercial and domestic projects. Assisting from design to finish. All our work complies with building regulations and is always fully insured. We are happy to assist with small projects & larger scale projects. Each individual project always has our full attention and David is on site daily and always available to discuss the progress of the project. We pride ourselves on being dedicated to each project at all times.
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Latest review:
David was very helpful, straightforward and a pleasure to deal with. He gave a fair price and was not phased by our sudden need to bring part of the work forward to accommodate another trade which he did without complaint and in good spirits.
ARROW
Rating: 5 out of 5
Extension Builder in Carshalton
Hi my name is Maicon and I would love to do the work you need, I do all the work as if it were for myself and we always want the best country, I work with carpentry in several sectors including kitchen assembly and laminate flooring, bathroom remodelling I do interior and exterior painting, install ceramic flooring, and small home repairs, I would love to make a budget and gain your confidence
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Latest review:
Kitchen Fitting- 23 May 2022
Excellent work done. Rod was flexible, accommodating and even saved me money! I will use him again and have recommended him to friends.

4.3

Top rated Extension Builders

Our Extension Builders in Carshalton, are rated 4.3 out of 5 based on 19 reviews from customers like you.

Quality screening

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

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 Carshalton 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 Carshalton who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Carshalton?

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

Find extension builders in Carshalton with MyBuilder

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

Step 2: Compare different extension builders in Carshalton

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

Step 3: Hire Carshalton extension builders with confidence

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

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

What to ask a Carshalton extension builder before hiring?

Before hiring an extension builder in Carshalton or extension building company in Carshalton, 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 Carshalton?

An extension builder in Carshalton 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 Carshalton 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 Carshalton?

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 Carshalton 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 Carshalton 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 Carshalton

Can an extension builder in Carshalton help with planning permission?

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

Many Carshalton 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 Carshalton help with materials and finishes?

Yes, most extension builders in Carshalton 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.