Extension Builders in Carshalton

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (22 reviews)

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Some of our top rated extension builders in Carshalton

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Carpenter
No reviews yet
Extension Builder in Carshalton
My name is Igor, and I have been a carpenter for about 10 years. I enjoy working with wood, creating strong and beautiful pieces that last. Carpentry is more than just a job for me—it’s a passion. I take pride in my attention to detail, precision, and craftsmanship. Whether building furniture, installing cabinets, or working on custom projects, I always give my best. I love seeing a project come to life and making my clients happy. Hard work and dedication define me, and I am always looking to improve my skills and take on new challenges.
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RCB (Reeves.Carpentry.Building)
Rating: 5 out of 5
Extension Builder in Carshalton
My name's Simon and I am a carpenter/builder I am a carpenter by trade but also specialise in extension's and refurbs. I have 20yrs experience straight from leaving school. We take on all aspects of building work wether it's from hanging a door, fitting a kitchen or completing a whole extension from start to finish. Also an approved Wren and Wickes kitchen installer.
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Latest review:
Kitchen Fitting- 17 Jan 2019
Simon was polite, efficient and very tidy. He listened to what I wanted (which was a little unusual), asked questions at each stage to make sure he was doing exactly what I wanted, advised when he thought an idea wouldn’t work and gave his own suggestions, communicated well with all the other tradesmen involved, got them all to do their bit in a timely fashion and worked very hard. I am getting him back to do another job imminently!
Dominant construction ltd
No reviews yet
Extension Builder in Carshalton
Dominant Construction is a customer centric integrated building company specialising in home renovations, loft and basement conversions, and kitchen extensions. With over a decade of experience, we have designed our processes to ensure that our clients projects run smoothly - always on-time and always on-budget. We keep clear lines of communication at all times to make sure projects are collaborative and executed with our client's needs at the forefront.
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Kp building
No reviews yet
Extension Builder in Carshalton
Here at kp building we want the best for our clients.we are a building company that has all your building needs under one roof.we specialise in loft conversions and extensions to a very high standard. We also do all types of building work no job to small. References available on request and can show jobs that I have completed.
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E.D Building & Construction LTD
New on MyBuilder
Extension Builder in Carshalton
E.D Building & Construction is a reliable and professional building company specialising in residential construction and home improvement projects. We provide a wide range of services including house extensions, structural alterations, RSJ installation, refurbishments, kitchen and bathroom renovations, plastering, and general building works. We pride ourselves on delivering high-quality workmanship, attention to detail, and a reliable service from start to finish. Whether it is a small improvement or a full renovation project, we work closely with our clients to ensure the work is completed to a high standard, on time and within budget. Customer satisfaction is at the heart of our business. We believe in clear communication, transparent pricing, and keeping work areas clean and organised throughout the project. At E.D Building & Construction, our goal is to provide dependable building services and create spaces that our clients are proud of.
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Home Empower
Rating: 4.8 out of 5
Extension Builder in Carshalton
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.
OWA CONSTRUCTION LTD
Rating: 4.9 out of 5
Extension Builder in Carshalton
We are a medium sized groundwork company based in West London. We have over 18 years groundwork experience. We specialise in Drainage , Basements Reinforced concrete, Foundations, Block and beam , Paving , Fencing Etc . We pride ourselves in our work and customer satisfaction is our top priority.
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Latest review:
Groundwork & Foundations- 7 Feb 2026
Oli carried out the groundworks and demolition at my property and was on site every day with his crew, fully committed and hands-on throughout the job. I am an architect, and this was work on my own home, so my expectations were high. Oli met those expectations fully. He has a strong knowledge of groundworks and demolition, works carefully and methodically, and you can tell he genuinely enjoys what he does and takes real satisfaction in delivering the work exactly as required. He was always in a good mood, easy to communicate with, and a pleasure to have on site. I enjoyed discussing the project and hearing about other jobs he has completed over his 23 years of experience, which clearly shows in the quality of his work. I would highly recommend Oli for any groundworks or demolition works.
SGW CARPENTRY AND CONSTRUCTION
Rating: 5 out of 5
Extension Builder in Carshalton
SGW carpentry and construction provide a great professional service to all customers. Providing all first fix and second fix carpentry as well covering all forms of construction services. A business looking to grow and focused on providing a good standard of work and service to all our customers.
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Lofts R Us
Rating: 5 out of 5
Extension Builder in Carshalton
Customer satisfaction is the pride of my small family business. We are a husband and wife team and specialise in the extraordinary.
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Latest review:
Central Heating- 19 Nov 2024
excellent work quick resolution low price which he kept to. Too many "builders" never came up with a quote or said job was too small. Recommended A++++
D&B Tatar Limited
Rating: 4.9 out of 5
Extension Builder in Carshalton
I am a highly experienced and confident individual with many years of construction experience , I have started working in this career from being a groundworker to working private jobs I am open to any jobs , as I have covered and worked in many different sides of construction industry ‘D&B Tatar Limited ‘ We lay foundation structures that improve the aesthetic of a building by laying driveways, footpaths and kerbs Installation of drainage systems Artificial turf installation Garden decoration Carrying out de-vegetation Outdoor steps We carry everything by always paying attention to details , comprehensive planning and execution which leads to high quality finishes
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Latest review:
Guttering- 19 Dec 2024
Great job fixing the downpipe.
Rosa Construction
No reviews yet
Extension Builder in Carshalton
From internal renovations that breathe new life into your space to building extensions that expand possibilities, and loft conversions that elevate residential and commercial structures—we have the experience and skill to handle it all.
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A S Builders
Rating: 5 out of 5
Extension Builder in Carshalton
We are a family run business in construction industry since 1990, initially started by my father and now his sons have joined the business and looking to revitalised the business through the use of up-to-date technology. We undertake all types of building work through our team of skilled labour from a small job up to New Build. Our most recent job was conversion of a detached property to 7 HMO's.
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Latest review:
Extensions- 29 Apr 2026
Heera, Jagthar and team was my first personal experience with builders. Let me tell you, it was a pleasure to have them do our porch and other renovations in the house. They are so courteous, hard working and provided a great service. Firstly, I had a comprehensively written quote breaking down all of the steps required. Heera then ensured to keep me in the loop of any developments/any changes of plan required, outlining the reasons why and options, making it easy to understand and work together to completion. Their finish was to a high quality and they would always go the extra step to ensure this. I highly recommend AS Builders for any job and will definitely use them again in the future, and would recommend to my friends and family also. If you are considering them, grab a free quote and go from there... That's what I did! Thank you AS Builders for our renovations!
Ridgewell Roofing and Building Ltd
Rating: 5 out of 5
Extension Builder in Carshalton
Ridgewell roofing and building ltd is a family owned and run business, we strive for perfection in the quality of our work , competitive pricing and customer satisfaction , no job is too big or too small , we do all types of roofing , from flat roofs in felt rubber fibreglass, pitched roofs repointing leadwork valleys and general maintenance feel free to get in touch
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Latest review:
Roofing (Pitched)- 10 Sep 2026
James was very prompt and gave a competitive quote and was professional in his response. Gave quotations for repointing a valley gutter and for replacing it if there was damage. James arrived promptly with his assistant and did a very good job with repointing the valley gutter as the valley itself was fine. He also replaced 4 damaged roof tiles at no extra cost. Would be happy to use Ridgewell Roofing for future roof work.
Daniel Petka
Rating: 5 out of 5
Extension Builder in Carshalton
We are a small team mainly specialize in extensions.All kind of roof work. Plumbing. Bathrooms. Tiling. 1st and 2nd Fix carpentry i.e doors, kitchens, flooring etc.
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Latest review:
Kitchen Fitting- 20 Apr 2019
Good communication... Good job... Good price.. On time and clean.. Will definitely use again.. Thank you Daniel.
Rayway limited
Rating: 5 out of 5
Extension Builder in Carshalton
Over 15 years of experience in building and construction industry
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Latest review:
Restoration & Refurbishment- 18 Feb 2021
Ray was an absolute professional. He fitted a new downstairs toilet which required a new soil pipe and associated groundwork as well as new stud walling to partition the space. He did most of the work himself, but brought in others for the pieces where he wanted an expert. He was flexible to small changes and was happy to take on additional work when unforeseen issues were discovered. The areas he had worked in were quickly cleaned before he left each day. Overall the work was completed to a good quality and at a reasonable price.
Rise Up Building
Rating: 5 out of 5
Extension Builder in Carshalton
We are loft conversion, extension, roofing and refurbishment experts - transforming spaces, exceeding expectations. At Rise Up Building LTD, we manage projects of all sizes, ensuring a smooth and stress-free experience. We serve all of London. With over a decade of industry experience. We pride ourselves on being fast, precise and personable, leaving you with your beautiful new space. Our commitment to delivering personalised service ensures maximum satisfaction every time. Contact us for inquiries.
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Latest review:
I recently hire rise up building to do my loft conversion, everything was done fast with care and quality, i really enjoyed having this guys around. Love it how they explained every step and every detail about the work. If you looking for some honest and professional contact rise up building, highly recommend them.

Top rated Extension Builders

Our Extension Builders in Carshalton, are rated 4 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 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.