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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Core Design and Build Ltd
No reviews yet
Extension Builder in Wandsworth
I'm Callum from Core Design and Build Ltd we are based in Hertfordshire, specialising in residential refurbishments, loft conversions, extensions and new builds. We have over 40 years of experience in the construction industry. Our team is made up of a professional team that completes every project to a very high standard.
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DJB Structural Carpentry
No reviews yet
Extension Builder in Wandsworth
DJB Carpentry is a specialist carpentry contractor operating throughout Essex and the surrounding counties. We have over 25 years of experience specializing in structural carpentry requirements. This includes everything from traditional cut and pitched roofs through to complex trussed roof structures and timber framed buildings and Glulam structures, We also carry out works on various other build types.
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R rose builders ltd
No reviews yet
Extension Builder in Wandsworth
We are a family run business with a great work ethic and always happy to help or advise. We have been in the building industry over 15 years with another venture in waste removal. We cover the whole of the uk with our services with anything from renovations to new builds, house clearances to demolitions and much more We are always competitively priced and always leave a tidy finish. Please get in touch for a no obligation free quote. Look forward to hearing from you
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Garnet Construction Ltd
Rating: 4 out of 5
Extension Builder in Wandsworth
Garnet Construction has over 10 years' experience in the industry and specialise in loft conversions, all types of extensions and complete renovations. Priority is given to the design and construction of all our projects with a unique obsession to strive for perfection.
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Latest review:
Extensions- 18 Sep 2019
To start off with the job went reasonably well - we were happy with the workers and the progress. but when we neared completion the work slowed up we waited 3 months for a response from Jordan. we had an issue where his plasterer hid the plumbing access in the wall. - This cost us £500 to sort and re-decorate so we came to an agreement that this was fine and at the time i presumed that Jordan was going to sort out the building control. so we then chased and chased but obviously since he had his money he wasn't interested he answered the phone and hung up. so we called building control and there are 2 small bits to fix which are all due to his work not being up to scratch. obviously i will be paying out for this - so please be careful when using him and dont pay him until you have all of the documents as he will not resolve any issues after being paid. i have had 2 previous building projects and this was by far the worst experience going. avoid dont use him thanks
OWV Developments LTD
No reviews yet
Extension Builder in Wandsworth
OWV Developments Ltd is a trusted, NHBC-registered building and development company based in Camberley, Surrey. Established with a strong foundation in practical construction expertise, we specialise in delivering high-quality residential projects from concept to completion. With over 15 years of hands-on experience in the industry, our team has successfully completed a wide range of building works, including new builds, extensions, renovations, repairs, and civil engineering projects. We combine the agility of a local builder with the resources and standards of a professional development company.
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B H Construction
No reviews yet
Extension Builder in Wandsworth
B H Construction can assist you with all aspects of the building trade including extensions, refurbishments, structural alterations and all other trades. We pride ourselves on our high standards of work and have many years experience in the trade. We work closely with a kitchen company if you require a kitchen refurbishment and we also fit bathrooms from fairly basic installations, to very high spec. Fully insured
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Michael Francs Ltd
No reviews yet
Extension Builder in Wandsworth
All types of contruction & refurbishment works within the building trade. Our site agents or working foremen are also have first aid and SMSTS qualifications. So you know you are in safe hands when we are on site.
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Hylton Chimneys Ltd
No reviews yet
Extension Builder in Wandsworth
We are a loft and extension specialist.
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Ava Solutions
Rating: 5 out of 5
Extension Builder in Wandsworth
Ava solutions is a plumbing and property specialist that offers high standards we have a dedicated plumbing team along with other tradesmen to fulfil your requirements around the house from refurbishments to extensions and HMO’s. Bathrooms are our specialty and where we started out and have a dedicated fitting team. All works are carried out by individual professionals in there field, and not a one man does all giving you the best possible Finnish. We are able to offer plenty more reviews and pics via other sites/socials
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Latest review:
Bathroom Fitting- 21 Aug 2019
Love my new bathroom. Bretts team were helpful and polite. Would recommend Brett and employ him and his team again if needed.
HSS Construction
Rating: 4.6 out of 5
Extension Builder in Wandsworth
At HSS construction we take pride in delivering high-quality bricklaying services with over a decade of expertise in the industry.I am committed to precision craftsmanship and timely completion, ensuring that every job is built to last. We offer a wide range of services including new builds, extensions, garden walls, brick repairs, patios and landscaping. Hard and soft. Bringing your vision to life through quality building.
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Latest review:
Landscaping- 30 Sep 2025
All good thanks
Harro Construction
No reviews yet
Extension Builder in Wandsworth
Been doing building work for 18 years plus I sub contract to Duaris limited in east grinstead We - harro construction do there groundwork brickwork patios extensions drives all building work and I'm fully insured - 2million public liability . If you would like a quote for any work please call or email me thanks dave - harro construction
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London Refurbishment & Construction LTD
Rating: 5 out of 5
Extension Builder in Wandsworth
We are a friendly family business and we cover all aspects of the building trade. We have been trading for over 15 years in the Domestic Building trade. We undertake all large or small works so if you would like some professional advice just call, text, or email us. We carry out all the works on the domestic house: -Kitchens -Bathrooms -Plastering -Electrical -Plumbing -Painting & Decorating -Floors -Extensions -Loft Call now for free estimates and friendly advice.
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Latest review:
Restoration & Refurbishment- 23 Dec 2025
Christian & his team was beyond my expectations , they went above & beyond to make my home a home I have ever dreamt of they worked tirelessly & they very professionally & completed all agreed jobs in a timely manner.
Achille's construction
No reviews yet
Extension Builder in Wandsworth
Achille's Construction is a full service Construction Company dedicated to building and improving residential and commercial structures according to our client needs and desires. With an experience of over 20 years , our team is ready to give your space whatever updates it requires.
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LBT ENGINEERING LTD
No reviews yet
Extension Builder in Wandsworth
Comprehensive, practical and cost-effective engineering solutions.
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Painter
No reviews yet
Extension Builder in Wandsworth
I’m painter for 20 years
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Ideal construction
Rating: 5 out of 5
Extension Builder in Wandsworth
Hi my name is Paul, my company has only just started as a business, but we have been in the building game for nearly 40 years working for previous companies.
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Latest review:
Extensions- 11 May 2022
Excellent work, everyone on site was professional and let the neighbours know what was happening. Completely the job to a high standard on time and on budget. Would use again without a doubt.

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

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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.