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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Perfectloft
Rating: 5 out of 5
Extension Builder in Wandsworth
Converting your loft into a beautiful living space may seem like a daunting task, but the results are always going to be worth the painstaking process. The loft conversion procedure does not have to be that difficult; all you require is to hire right people to do the right job.
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Latest review:
Kitchen Fitting- 4 Nov 2019
Bogdan and Marius were great. They constantly kept us updated with progress and came up with good solutions to any issues they encountered, checking we were OK with them before progressing. They were on time, efficient, helpful and tidied up after themselves. I would definitely recommend them.
SW Heating & Refurbishments Ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
SW Heating & Refurbishments is a local refurbishment company specialising in complete property refurbishments, extensions and loft conversions, new heating systems and boilers. We take pride in all of our work and our aim is to provide you with a quality finish, tailored to your budget. With over 19 years experience, we have built up an extensive team of tradesmen allowing us to provide an outstanding service. We are fully insured and all our work is gas safe and NICEIC certified.
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Latest review:
Conversions - General- 20 Mar 2024
Charlie & Richard did a great job. They visited my property to get an accurate quote. They let me visit another property they are developing which gave me confidence that they were more than capable of my job. They carried out the work quickly and to a high professional standard. Wouldn't hesitate to use them again.
LUCID BUILDING LTD
Rating: 4.5 out of 5
Extension Builder in Wandsworth
We at Alder Tree Construction LTD are a specialists high-end London based construction company. We love what we do and pride ourselves on our work methods and exacting standards. Every project we take on receives special attention and we are heavily invested in the delivery process. A dedicated Team is assigned to each and every project so a personal service is always guaranteed. Our success is based on our honest approach.
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Latest review:
Handyman- 14 May 2018
I had an issue with one of my lights. Pawel came on time and was very helpful, polite and efficient. He did the job quicker than expected and also followed up the following day. I would highly recommend.
LONDON PROPERTY CARE LTD
Rating: 5 out of 5
Extension Builder in Wandsworth
Hi my name is Faruk. We specialise internal and external Refurbishment specialist,complete bathroom , bedroom , kitchen fitting ,tiling , plastering, painting and decorating. and more …………. I have over19 years experience on building side… Professional team Refurbishment specialist. Provide a full service including all preparation and fittings finished to a high quality service we can help you create the look you want…….. Please feel free and contact anytime … Your sincerely Faruk London Property Care Ltd
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Latest review:
Handyman- 17 Feb 2026
Fantastic job. Good communication. Trustworthy. Thanks
Dalibpro services limited
Rating: 5 out of 5
Extension Builder in Wandsworth
Since 2004, DPS Ltd. based in south west London delivers hight standard new build project, house extension, loft conversation to people in Southwest London and Surrey. Our aim has always been to became a company that people associate with quality, professionalism and customer satisfaction.
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Latest review:
Ground floor back extension, reconfiguration and full redecoration. We chose Dali, firstly through recommendations by neighbours, seeing his work first hand and feeling confident during the consultation phases of his ability to deliver. Prior to the job commencing a schedule of works and costing were clearly agreed. We were impressed with Dali's level of communication and his availability to meet with us personally. He would always return a message promptly and that continued throughout the job. Dali expertly guided us through the project and also arranged architect and structural drawings, site surveys, council applications and 3rd party wall advice. We decided to live-in during the build which is never ideal but Dali cordoned off spaces for us to live whilst allowing him to get on with the job. He set up temporary kitchen and laundry facility some 3 or 4 times for us! Now for the business end. Dali supervised the project but also allocated a Manager, Michal to be our point person and he was on site every day without fail. Both would respond to any question promptly and courteously. I learnt to keep the questions short and be more patient as the job progressed as everything was always on their agenda to be done. Teams of builders would arrive punctually by 8am and work would always start promptly. Everyone on the team had clear instructions and their industry was on show from start to finish. I could not fault them at all for their reliability and professionalism. They were all courteous, polite and respectful and would also make a point to clear up after themselves at the end of each day. On occasions I did request a deviation it was fully discussed so we could make informed decisions but nothing, no matter how small, was made to seem trivial as they were intent on delivering an unquestionable product. The job progressed sometimes at lightning pace with crews of builders coordinated daily and we hardly had a single day where someone was not in attendance. Dali would continue with a regular update by email or phone so we were always aware of progress. When problems did occur, Dali and Michal would distress those situations, find solutions quickly and sometimes you are oblivious to there even being a problem. On the few occasions they made mistakes they were not argued about but swiftly rectified ... finding someone who was honest and proud of their workmanship has been a true find. The work progressed to schedule and the end result is something we are not only thrilled about but cannot fault at all. It is a level of workmanship we have been truly delighted with. Another thing I am confident of is that if something does happen in the future Dali will respond to my call whether it be now or in a year's time. There is so much positive to be said and I would highly recommend DPS Ltd for their professionalism, reliability and workmanship so much so I have already asked them to continue on the 1st floor.
Housix
Rating: 5 out of 5
Extension Builder in Wandsworth
Hi, We are a full-service construction company that specialises in helping homeowners renovate and restore their properties, whether you’ve just moved in or have a lifetime of memories beneath your roof. We offering everything from initial design concepts,architectural design and building work for loft conversion, house extension and renovation We provide all our customers with a detailed quote which includes what roles Housix are providing. Have a look at my profile and get in touch Thanks
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Latest review:
Extensions- 20 Nov 2021
After using Housix for our previous renovation, we worked with Ciprian and his team on our new kitchen extension, and we’re so happy with how the project has gone. They’ve worked extremely hard throughout, brought some amazing ideas to the project, and nothing has ever been too much trouble to make it perfect. They’re a great team, very friendly and communication is very clear throughout - we even managed to finish ahead of schedule which was great! I’d have no hesitation in recommending Ciprian, and Housix for any type of renovation/extension/loft conversion work, and we will for sure be using them for our future work we have planned.
Klodi Construction
Rating: 4.5 out of 5
Extension Builder in Wandsworth
We are a small construction partnership, specialising in: internal refurbishments, kitchens, bathrooms, rear and side extensions, loft extensions, general maintenance, joinery and decorating.
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Latest review:
Handyman- 24 Sep 2025
I initially called Klodi to repair the kitchen stove extractor pipe, but after seeing their professionalism, I entrusted them with additional tasks, including painting the ceiling and walls in the kitchen and installing a brand new fire door. Throughout the project, they worked quickly and efficiently without compromising on quality. Their team was highly professional, friendly, and very communicative, always keeping me informed about what they were doing and explaining each step of the process clearly. I was impressed with their attention to detail and the care they took to ensure everything was perfect. The finished work transformed my kitchen, and I wouldn’t hesitate to recommend Klodi for any home improvement tasks. Their dedication to customer satisfaction truly stood out. I will definitely use them for more jobs and recommend them.
Hutson Bespoke Ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
Hi, We are Claudia and Sophie, we own and run Huts & Blom Construction. We provide a service that exceeds the normal expectations of the trades industry. We have over 10 years experience and provide a friendly, professional and trustworthy service. We have built a team of highly skilled and qualified tradesmen and women to undertake any project you have in mind. We specialise in extensions, full renovations and landscape gardening. All the team are registered for each of our individual trades.
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Latest review:
Landscaping- 29 Jul 2025
Super team, reliable, professional and helpful. Definitely recommend them
Southfields Builders Limited
Rating: 5 out of 5
Extension Builder in Wandsworth
We pride ourselves in being a passion driven builders, always striving for the best possible results. We approach projects in a pro-active way, carefully listening to our clients and responding in a practical, reasonable and cost-effective way. We have various qualifications and vast experience in residential construction, but because we work in a changing industry, we are constantly expanding our knowledge just to be able to come up with better ideas. We are also on Checkatrade.
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Latest review:
Great builders! Nice team, very helpful and respectful. Maciek has been a great communicator and he helped us to plan everything, so the work could be done while we were away. We were pleased with the builders, they were very polite and hardworking.
Vagner
Rating: 4.9 out of 5
Extension Builder in Wandsworth
I do tile, painting, carpentry among others. What differentiates me from others: quality agility and especially the price
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Latest review:
Bathroom Fitting- 28 Dec 2024
Thank you
Gme Construction LTD
Rating: 4.6 out of 5
Extension Builder in Wandsworth
we are a team of experienced professionals committed to delivering exceptional construction, renovation, home improvement, garden and maintenance services.Our mission is to exceed client expectations through quality craftsmanship, transparent communication, and a personalised approach tailored to the unique needs of every project.
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Latest review:
Painting & Decorating- 31 Oct 2025
Gani was great; very efficient, professional and trustworthy. I would definitely recommend!
ISTOK Construction Services
Rating: 5 out of 5
Extension Builder in Wandsworth
ISTOK Construction Services is London's local construction company. Every loft conversion, every extension and every redecoration or refurbishment is fully executed to your specification, helping you to create the most space out of your home. We specialise in a wide variety of bespoke home improvement projects; designed to expand your space and breathe new life into your home, inside and out. We offer a very fast and reliable service with very competitive prices.
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Latest review:
Bathroom Fitting- 24 Sep 2018
Vlad and his team were great. They worked hard and the bathroom looks perfect. Would highly recommend.
Woodn Construction
Rating: 5 out of 5
Extension Builder in Wandsworth
Hi, I’m a carpenter and sole trader based in South West London with over nine years of experience in the trade. Over the years I’ve worked on a wide range of residential projects such as managing full site builds throughout to creating custom, made-to-measure furniture. My skills cover everything from stud walls, plaster boarding, skirting, architraves, doors and windows, to kitchens, flooring, and bespoke cabinetry. I take pride in delivering a high standard of finish and keeping things tidy and well-organised on every job. I enjoy working closely with clients to bring their ideas to life. Whether that’s fitting a new kitchen, renovating a room, or designing something completely unique. Based locally, I offer a reliable, friendly, and flexible service across SW London and the surrounding areas.
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Latest review:
Hard Flooring- 2 Mar 2026
Highly recommend Kaylum, he ripped out the old sub-floor and fitted a new sub-floor along with new Engineered wood flooring in all of the bedrooms and hallway. Quality of work and attention to detail was exceptional. His colleague then decorated all the rooms beautifully once the floor was installed - really happy with the end result.
Wisebuild Construction Ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
Hi, I've been in construction for 25 years, building many extensions, basements, loft conversions, new builds and many refurbishments. We carry out all aspects of the building process, including electrical wiring, plumbing, bathroom fit outs, carpentry, cabinetry, tiling, kitchen fitting and decoration.
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Latest review:
Restoration & Refurbishment- 13 May 2026
Paul was highly professional throughout the engagement. He provided clear, practical advice and took the time to thoroughly assess our needs during the consultation. He was also very responsive and proactive in following up on any questions we had afterwards, which we really appreciated. Overall, a great experience working with him.
F&G Design and Build ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
With a solid foundation of 15 years in the construction industry, our company has established itself as a beacon of excellence and reliability in transforming spaces Specializing in loft conversions, extensions, general building work, and renovations, we take pride in our ability to merge innovative design with impeccable craftsmanship.
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Latest review:
This was a major piece of work. F&G Design and Build created a stunning new storey to the house. The roof was renewed, new windows inserted back and front, plus a shower, toilet, cabinets and basin in adjoining bathroom. Special mention needs to be made of the extension to the stairway. They copied the original design to perfection (much admired by all those who have seen it). They also refurbished my kitchen to a very high and beautiful standard. They were always friendly and approachable and totally reliable. An absolutely brilliant team, and a pleasure to work with. And they finished the job on time!
Balham construction Ltd
Rating: 5 out of 5
Extension Builder in Wandsworth
Balham construction are a London based refurbishment and construction company that offer a wide range of services from full Property refurbishment to extensions and loft conversions and everything in between
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Latest review:
Tom and the team completed a full renovation of my flat. This included refurbishment of my kitchen, bathroom and general redecoration. The team were extremely hardworking and punctual and no job was too difficult for them. I would highly recommend their services.

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.

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 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.