Extension Builders in Southampton, South East England

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (4 reviews)

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Some of our top rated extension builders in Southampton, South East England

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Innovative Developments Ltd
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Innovative Developments Ltd - Construction Experts. Thank you so much for considering us for your project. I am Tom, the founder and director of Innovative Developments. We are a registered limited company located in Waterlooville. Across Hampshire our residential projects include new construction, renovations, repairs and restorations. We deliver professional planning, project managing, reasonable and competitive prices and an exceptional finish on construction projects of any size.
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Latest review:
Tom and Jack made a great team; they worked well together. Tom made sure any requests we had were dealt with. His attention to detail was second to none. They did an amazing job and left everywhere clean and tidy. I highly recommend them.
Future Build
Rating: 5 out of 5
Extension Builder in Southampton, South East England
We are a Building company that specialises in Brick/stone work ,Extensions, new builds, Renovations, hard landscaping and manage all trades to your projects Needs. We offer our clients the opportunity to only need one single point of contact should they require a variety of works completed. Our object is to ensure that our customers experience a hassle-free and seamless service of excellent quality.
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Latest review:
Decking- 7 Jun 2020
*****HIGHLY RECOMMENDED***** Firstly, these guys are lovely hardworking honest people who were only interested in making sure we got exactly what we wanted! Their work was nothing short of outstanding and I am absolutely over the moon with my decking. Considering my garden is on a slope I didn't think it would turn out as amazing as it did. But thanks to their skill, we now have a fabulous garden space to enjoy. They used only high quality materials and I have to say they are complete perfectionists. I am happy to be a reference for anyone who is thinking of hiring. 5* service, great price and one happy customer!!! Thank you!!!! Actually can't thank you enough!!!
N.M Building & Maintenance
No reviews yet
Extension Builder in Southampton, South East England
We are your local reputable and presentable Building & Maintenance Company, specialising in all areas of the Building industry. We undertake small maintenance tasks such as fill and flush valve replacements, kitchens & bathroom refurbishments, all the way through to new build's and total refurbishment projects.
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Follett construction limited
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Follett construction limited is based in the new forest and specialises mainly in carpentry. Customer satisfaction is always the top priority for us and no job is too big or small. We are very reliable, tidy and professional.
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Latest review:
Carpentry- 17 Dec 2021
Tommy did MAGIC around our place, patched up floor areas that previously stood walk-in wardrobes (it's looking seamless), fit skirtings neatly, re-hinged a utility box, and helped with adjusting furniture to fit nicely against the wall. 100% recommendation.
Amt projects
No reviews yet
Extension Builder in Southampton, South East England
Amt projects has been trading since 1993, working on projects from new builds to fence repairs no job to small , and always happy to quote
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Emanuel Builder
No reviews yet
Extension Builder in Southampton, South East England
My work involves extensions, alterations, kitchens and bathrooms , hard landscaping, plastering and carpentry, I have been doing this for now for 37 years and have a good reputation in my area.
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Garden Space Projetcs limited
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Garden Space Projects are a business located on the South Coast that specialises in constructing Light Gauge Steel Garden Rooms. Our building method is designed to speed up construction, reduce costs, and increase durability. Unlike traditional building methods, our approach allows us to build any garden room design you require without the usual hassle. We also instal Composite Cladding; Fencing and Decking.
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Latest review:
Composite Decking. Absolutely amazing work, George was polite and friendly, answered all my questions with ease and went the extra mile ensuring I was happy,keeping me updated at all stages. Great service all round. Highly recommend. Thanks you George great assett to the company.
Walkley Carpentry
Rating: 4.7 out of 5
Extension Builder in Southampton, South East England
Covering all aspects of carpentry, loft conversions and general building. Fully qualified with over 10 years experience. Main type of work carried is loft conversions, kitchens, bespoke wardrobes, flooring, extensions, 1st and 2nd fix carpentry.
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Latest review:
Kitchen Fitting- 21 Dec 2021
V good so far - not finished yet due to other work.
T&m contractors
Rating: 4.5 out of 5
Extension Builder in Southampton, South East England
Welcome to T&M Contractors LTD, your trusted partner for all building and construction needs. From initial design to final touches, we offer a comprehensive range of services tailored to suit your project requirements. Backed by over 20 years of experience and a team of skilled professionals, we deliver exceptional craftsmanship that not only meets but exceeds expectations. Whatever your vision, we turn it into a tangible reality with precision and expertise.
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Latest review:
Plastering- 30 Jun 2026
Highly recommend Tony at T&M for any home improvement work, inside or out. I've used him several times now and have always been happy with the result. He's a great communicator, works to a very high standard, and is super tidy on every job. A genuine perfectionist who understands exactly what's required. Can't recommend him highly enough.
Waltham Contracting Ltd
No reviews yet
Extension Builder in Southampton, South East England
At Waltham Contracting Ltd, we are proud to be third-generation builders, carrying on a family legacy with a modern, client-focused approach. Since 2019, we have specialised in delivering high-quality bespoke builds, extensions, and small-scale commercial projects. Based in Bishops Waltham, we provide reliable and professional building services across the South Coast, including Hampshire, Dorset, and Sussex. Our reputation is built on craftsmanship, attention to detail, and a personalised service tailored to each client’s unique vision. Whether you’re looking to create a custom home extension, undertake a bespoke build, or need a trusted partner for small commercial work, Waltham Contracting Ltd is here to bring your project to life.
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COLEMAN CONSTRUCTIONS (SOUTHERN) LTD
Rating: 4.7 out of 5
Extension Builder in Southampton, South East England
Coleman Constructions is a family run business which has been established since 1993. My father used to run the company up until he retired 5 years ago and I have been running things since then. The business has over 30years experience in the building trade. We specialise in loft conversions, extensions, kitchens and all other types of carpentry.
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Latest review:
Extensions- 28 Jan 2026
Dan came round at short notice to discuss our plans for a garden room; he provided a very detailed itemised quote so we knew exactly what we would be paying for. Before committing we had multiple questions for Dan and he (very patiently!) provided clear and detailed answers. We set up a WhatsApp group with Dan and his communication with us throughout was brilliant. He kept us updated with the plan/schedule for each day, he sent us before and after pics to show progress and was always quick to respond in detail to any of our queries. We are really pleased with the finished build, it ran smoothly and it finished on time. We really appreciate Dan, Chris, Cam and Alfie's hard work and would certainly use them again for any future projects.
HARTTS GROUP LTD.
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Transform your space with Hartts: Meticulous design meets masterful construction, delivering a flawless finish with every project. We’re not just building spaces; we’re carefully crafting your future with a touch of elegance and unwavering attention to detail. Experience the convergence of functionality and aesthetics, as we turn your vision into a breathtaking reality. Choose Hartts for a transformative journey that exceeds every expectation.
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Latest review:
Joinery & Cabinet Making- 10 Nov 2020
Jamie is very friendly and great with his communication. He designed and built a bespoke angled fitted wardrobe for my home and I’m very happy with the result. The cost was also very fairly priced. I would recommend him / his team’s services.
Litten Properties Developments LTD
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Litten Developments - a Litten Group company
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Latest review:
Gas Work- 10 Jul 2023
The lads are professional. Turned up on time. Kept me in the loop and provided a good service. I definitely recommend them.
RBA Builders LTD
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Rba Builders Ltd are a team of highly skilled and trustworthy builders and tradesmen which have many years experience in new builds, constructing home extensions, loft conversions, basement conversions and refurbishments . We are a dedicated building company with a diverse portfolio of projects in residential sectors.
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Latest review:
Construction of new 4 bedroom house where RBA Builders Ltd was the lead contractor. Remigiusz led the team and was extremely reliable and professional at all times. The project was completed to a high standard and I would have no hesitation in recommending Remigiusz and RBA Builders Ltd for any future projects.
Elite Brickwork Services (UK)
Rating: 4.6 out of 5
Extension Builder in Southampton, South East England
Welcome to Elite Brickwork Services (UK), my business aims to provide a professional first class service to all it's customers. No project is too big or small and every job is completed to the highest specification.
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Latest review:
Never done the job. Had to find another contractor.
Tom Harding Brickwork
Rating: 5 out of 5
Extension Builder in Southampton, South East England
After I finished my apprenticeship l joined a bricklaying gang for a few years to gain experience. I have over 20 years experience just on my own. I do bricklaying from retaining walls to new builds as well as stonework, patios, repointing, driveways, chimneys, groundwork and decking, fencing and landscape gardening. For a friendly service at good prices, get in touch.
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Latest review:
Bricklaying- 11 Nov 2017
Tom done a really good job building a retaining wall in my back garden! Very reliable and can recommend him to anyone!

4.3

Top rated Extension Builders

Our Extension Builders in Southampton, South East England, are rated 4.3 out of 5 based on 4 reviews from customers like you.

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What types of services are offered by local extension builders in Southampton, South East England?

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 Southampton, South East England 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 Southampton, South East England who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Southampton, South East England?

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

Find extension builders in Southampton, South East England with MyBuilder

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

Step 2: Compare different extension builders in Southampton, South East England

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

Step 3: Hire Southampton, South East England extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Southampton, South East England, 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.

Southampton, South East England extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Southampton, South East England extension builder before hiring?

Before hiring an extension builder in Southampton, South East England or extension building company in Southampton, South East England, 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 Southampton, South East England?

An extension builder in Southampton, South East England 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 Southampton, South East England 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 Southampton, South East England?

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 Southampton, South East England 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 Southampton, South East England 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 Southampton, South East England

Can an extension builder in Southampton, South East England help with planning permission?

Yes, many extension builders in Southampton, South East England 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 Southampton, South East England handle everything from design to construction?

Many Southampton, South East England 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 Southampton, South East England help with materials and finishes?

Yes, most extension builders in Southampton, South East England 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.