Extension Builders in Wandsworth

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (21 reviews)

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Some of our top rated extension builders in Wandsworth

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JWC&BS LTD
Rating: 5 out of 5
Extension Builder in Wandsworth
I am fully qualified carpenter with NVQ qualifications. I’ve had experience working with listed building, extensions , loft extension, roofing , first fix , second fix carpentry , kitchens and flooring
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Latest review:
Decking- 30 May 2020
Great work. Nice and tidy. Would use again for general carpentry needs.
Happy Building London Ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
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.
Samul Construction LTD
Rating: 5 out of 5
Extension Builder in Wandsworth
Estimate Prices From: * Loft Conversion £50k(labour+materials+scaffolding) * Home Extensions £3-4k per square metre * Basement £3-8k per square meter (labour+materials). * Bathroom refurbishment £8k (labour).
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Latest review:
Demolition- 18 Oct 2011
Thank you very much - good job and good service. A real help!
Particle Construction LTD
No reviews yet
Extension Builder in Wandsworth
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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EG Construction
Rating: 5 out of 5
Extension Builder in Wandsworth
Creating high-quality construction work, we specialize in high-end refurbishments and extensions, covering both internal and external work, in and around London. Building upon over 30 years of experience, we aim to provide unrivalled quality at a competitive price.
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Latest review:
Restoration & Refurbishment- 3 Jun 2021
Enrico pulled in a great team to refurbish my bathroom. It wasn't a straighforward suite swap out as I added a window, switched from an electric to plumbed shower, properly plumbed in the sink and changed the orientation of the shower and bath. Enrico took all of the stress out of ordering and receiving all the different elements, he added in some great suggestions of final touches and kept close to all aspects of the project until I was fully satisfied with clear timings and payment plan etc. on top. It's an old house and there were curve balls from time to time but Enrico and the team took them in their stride and made it a great experience. I'm totally thrilled with the end result.
Beeches Building Ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
Beeches Building undertakes all manner of construction jobs, specialising in residential extensions and refurbishments. With loads of experience and a truly international team, we bring a unique and exciting perspective to every project.
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Latest review:
Nathan and his team were fantastic. I urgently needed a kitchen refit in a rental property between tenancies. Nathan anticipated my every needs. They were fast, efficient and paid great attention to detail. I would highly recommend them and I would use them again.
LW Building Service
Rating: 5 out of 5
Extension Builder in Wandsworth
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!
South &East London Builder's
Rating: 3.7 out of 5
Extension Builder in Wandsworth
........We are specialising Bathrooms and kitchens fitters,Handymen,paiters,plumpers, electricians,Flooring Fitters,all house refurbishments .Our work is completed to High standart and home left clean and tidy,friendly service. Also we do Extension Lofts Roofing Plastering Sounds proofing Damp proofing And many other trades Don't hesitate to contact us for any jobs small or big we are available 24/7 free quotation Many thanks
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Latest review:
Extensions- 6 Mar 2023
Valerian unfortunately let me down dreadfully. He agreed a price we signed a contract but then decided to walk off site once it became clear he was unable to do plumbing work. He refused to assist in appointing another contractor and didn't pay his own workers.
De Winter’s Property Services LTD
Rating: 3 out of 5
Extension Builder in Wandsworth
Welcome to De Winter’s Property Services LTD – we proudly cover all aspects of work, both domestic and commercial. Whether it’s your home or business, our experienced team delivers high-quality, reliable solutions tailored to your needs. I’m Aidan De Winter, director of De Winter’s Property Services. I’ve been a fully qualified plumbing and heating engineer since 2014, with extensive experience across domestic and commercial sectors. Over the years, I’ve built strong knowledge in many areas of the construction industry and a trusted team of skilled tradespeople around me. Based in South London, we’re happy to take on jobs across all of London and beyond. Why choose us? With a reputation for quality, honesty, and reliability, we deliver every job to the highest standard—on time and within budget. No job is too big or too small, and we treat every project with the care it deserves.
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Latest review:
Plumbing- 24 Jan 2026
I did hire Aiden De Winter for the job. He came and inspected the problem and sent us a link to purchase a new pump. I paid him for this work. We purchased a new pump, and he decided not to finish the job and come back to install the pump. This caused a lot of problems as he was the second plumber I hired for this job, and now we have to find a third plumber! What a waste.. how hard is it to come back and fit the pump! Do not use this company at all costs!
GRB Building and Home Improvements
Rating: 5 out of 5
Extension Builder in Wandsworth
At GRB Home Improvements we have over 15 Years experience in general building contracting including extensions, kitchen and bathroom refits, loft conversions, garden landscaping, patios and outbuildings, drainage and groundwork, drives and general building maintenance. We passionately believe in customer satisfaction and strive to ensure that our quality work is delivered on time, as per the agreed schedule, and that we come in on budget.
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Latest review:
Carpentry- 24 Jan 2021
George came to do up our hallway. He laid flooring and installed new spindles and a handrail on our stairs too. He did a wonderful job on the whole lot and we were very happy with him. We were awkward and changed our mind on the first laminate flooring that I had picked out online, he ripped it up and started again with the new flooring we picked and it was no hassle to him. George is a lovely fella, trustworthy and professional. Would highly recommend
Dagat Ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
DAGAT LTD is an established family-owned property development and refurbishment company who have been successfully trading in the South East of England. Whether we are constructing a new bespoke property, beautifully re-developing a home, or carrying out extensions of all shapes and sizes, each project always receives the same thoughtful and meticulous attention to detail. We are additionally able to provide an extensive range of commercially orientated projects having worked for a wide range of industry sectors. We strive to create a mutually beneficial close working relationship with our clients and / or their management team. We can either complete a project from the initial planning stage or work from an architect’s plans. Our pride in working all the way through to a beautiful finish has been a major contributory factor in our success.
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Latest review:
Conversions - General- 3 Sep 2025
Big refurb of 1650 sq ft flat, plus building 2 additional ensuites. Initial quote seemed reasonable but then once in, costs started to rise exponentially. Some work was done well, like the building component and flooring, but finishing was poor. Painting, particularly of internal doors, was done poorly, without removal of fittings first, so lots of overpainting and insufficient prep and coats. Regrouting and redecoration of front and rear patios was done poorly, with weeds already poking through. There was damage to existing bathtubs and WCs by not protecting surfaces and pouring waste materials down the pan. Everything was an argument with constant demands for more money e.g. front door only painted one side as the other side not included under "paint door". Lots of "snagging" - I only have manual on/off control of heating and hot water as "smart" thermostat won't connect, there are odd water pressures through some fixings...and now there's a leak under one of the WCs...
Multiservice Solutions LTD
Rating: 4.9 out of 5
Extension Builder in Wandsworth
At Multiservice Solutions LTD, we pride ourselves on being a team of multi-skilled, experienced, and reliable handymen and service providers. We are dedicated to delivering top-notch services across London, ensuring your needs are met with efficiency and professionalism. Whether you require sash window installation and refurbishment, end-of-tenancy cleaning, or comprehensive property management, we've got you covered.
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Latest review:
Windows & Doors (Wooden)- 30 Mar 2026
I hired Endri for 1 double glazed unit replacement, repair and repaint my wooden windows. He was professional and well mannered from the start. He did a fantastic job on the windows, now they look as good as new from the inside. I'd be happy to hire him again in the future.
Coulsdonbuilders Ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
Coulsdon Builders has been successfully making home improvements for over 15 years. We are ready to fulfill your needs as a builder. Whether you desire a full renovation to create your new dream home or home improvements or general enhancements to add value and space to your property, we are here to assist as a contractor. Coulsdon Builders can propose and carry out the best building solutions for you to achieve your building goals, within your budget and in a short time-frame.
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Latest review:
I wanted a side infill extension, converting a one bed into a 2 bed. The works was undertaken by Coulsdon Builders which took around 8 months. I made several changes throughout the project hence the delay. They were so accommodating and never had an issue and was always happy to cooperate. The cost of build was £120k and we stuck to the budget. I am delighted with the works and am grateful they made my house a home. They were clean and tidy on a building site and always kept me updated on progress. This is one builder that I highly recommend and trust. Great work guys and thank you again!
LOUI"S MAINTENANCE LTD
Rating: 4.9 out of 5
Extension Builder in Wandsworth
we are a reliable professional small company,we provide a high quality of work at competitive price"s,we are fully insured for all the work we take on ,and we are proud of what we do ,no job to small or too big ,we do kitchen & bathrooms,plastering & tiling,wood flooring,painting & decorating ...
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Latest review:
Bathroom Fitting- 15 Oct 2024
Actually, I prefer to call him as Super Mario instead of Loui :) Initially I agreed to work with him just for our bathroom renovation project but he fixed almost everything later on. Pipe installation, plastering, painting, and installation of furnitures are just some points of this work. He made an amazing job while renovating our bathroom, I still could not believe it is ours. I just observed he was very disciplined and working vey clean. He came early 8 AM and left around 5 PM without any delay and more importantly left my property enormously clean (I wish you see my wife’s happiness), almost for a week. He then replaced my garage roof which was leaking after every rain. Fixed my rain gutters and drains. Well, he then fixed all my internal doors and garage doors which were not aligning properly. I am so happy as a customer and I am really happy with the quality of work. Thanks again Loui.
BLUELIME CONVERSIONS LTD
Rating: 4.7 out of 5
Extension Builder in Wandsworth
Bluelime is a one stop shop for all your planning, interior design , structural engineering and construction needs. With over 8 years worth of happy customers we pride ourselves with our honest and inventive solutions. Free initial consultations and proven track record of planning approvals.
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Latest review:
Extensions- 8 Oct 2018
Alton and his team at Bluelime have been incredibly helpful and enthusiastic throughout our design and planning process. From the start, Alton took his time to understand our needs and propose several cost-effective ways to improve my home and create more space for my growing family. The design process was completed efficiently and submitted for planning permission, which was granted without a problem. Since then, his team have continued to be helpful and communicative despite my need to delay to the building works due to unfortunate complications with my freeholder.
K.M Home Construction
Rating: 5 out of 5
Extension Builder in Wandsworth
Our company deals with construction and renovation. We are professional. We ensure a high standard of our work, we keep the agreed deadlines.
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Latest review:
Bathroom Fitting- 11 Oct 2023
He was very professional and has completed the work as desired.

4.2

Top rated Extension Builders

Our Extension Builders in Wandsworth, are rated 4.2 out of 5 based on 21 reviews from customers like you.

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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 Wandsworth?

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

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

What are the hourly rates of extension builders in Wandsworth?

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

Find extension builders in Wandsworth with MyBuilder

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

Step 2: Compare different extension builders in Wandsworth

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

Step 3: Hire Wandsworth extension builders with confidence

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

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

What to ask a Wandsworth extension builder before hiring?

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

An extension builder in Wandsworth 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 Wandsworth 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 Wandsworth?

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 Wandsworth 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 Wandsworth 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 Wandsworth

Can an extension builder in Wandsworth help with planning permission?

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

Many Wandsworth 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 Wandsworth help with materials and finishes?

Yes, most extension builders in Wandsworth 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.