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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Lody Construction LTD
Rating: 4.9 out of 5
Extension Builder in Southampton, South East England
We are a family run business that takes projects on from small garden walls, patios , to large extension projects & new builds. Customer care & satisfaction is our number one priority, we always ensure we build a very close relationship with all our clients, trust and communication is key to a successful project and happy clients. We will ensure that all of our work is to a very high standard and all work will comply with planning & building regulations.
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Latest review:
Repointing- 16 Aug 2019
Patrick responded quickly to my job request and was very pleasant to deal with over the phone and in person. He thoroughly assessed what needed to be done and made additional recommendations in a very professional manner. He was very competitive with the quote for the work, and it was completed on time and to a very high standard. Highly recommended.
SAS BUILDERS
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Hi I’m Steve and I have been in the construction industry for 25 years with my main trade being bricklaying. I also carry out other work including landscaping, repointing and fencing. Please feel free to contact me anytime with any enquiries.
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Latest review:
Bricklaying- 23 Jun 2025
I am very happy to recommend Steve. He replaced two external sub floor wall vents with telescopic vents 4 rows higher and above dpc, all looks very good! Very satisfied! Throughout, Steve was very friendly, good at communicating and explaining. The job was left completely free of any debris.
Mr Developments
Rating: 5 out of 5
Extension Builder in Southampton, South East England
General building contractor Time served plastering and bricklayer, with over 30 years experience on own contracts Specialises in extensions and renovations, have carried out contracts in past to value of 250k on total renovations Well experienced in all ground works
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Latest review:
Extensions- 27 Jun 2019
Mike built our extension (20m sq approx.) which involved rerouting a number of waste, soil & rainwater pipes, blocking up an existing window, fitting two new windows, sliding doors and roof lantern and laying a new patio area. He started and finished the work on time and readily coped with adjustments we made to the plans. My wife and I are very pleased with the results. Mike is a willing and able worker with an easy going, genial nature who wants to do a good job. We've asked him to quote for some addition work and I'm happy to recommend him.
3C cunningham construction
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Hi I'm Denis a professional carpenter able to take on loft conversion, extension & garden design. I work with a small team of colleagues where we can take on jobs from start to finish with no time away until the job is completed. We work to an achievable time scale with a high quality of workmanship.
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Latest review:
Carpentry- 18 Aug 2025
Dennis gave a good quote, answered any questions I had, was understanding when the door was delivered damaged and had to put the job back a week. He arrived on time, he was clean and tidy in his work and made easy work of fitting our wheelchair access bathroom door (3ft wide). We are very happy with the finished result and will definitely go back to him if we need a carpenter in the future.
Seymour Groundworks & Construction Ltd
No reviews yet
Extension Builder in Southampton, South East England
Seymour Groundworks & Construction Ltd are a hard working construction team who offer a lot of services! We deal with all things from drainage and services, garden renovations, paving and driveways to extensions plus so much more.
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Kelsea construction ltd
No reviews yet
Extension Builder in Southampton, South East England
I’ve been running Kelsea Construction since 2019, I am an experienced bricklayer with 8 years behind me. We are a passionate, hard working and forward thinking team. We can cover all aspects of the building world, from landscaping, extensions, new builds etc, no job too big or small. Kelsea Construction specialises in brickwork.
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Ashford & Thompson Ltd
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Ashford & Thompson is an award-winning building company with decades of experience delivering high-quality residential and commercial projects. We are proud winners of the National House Builder of the Year Award (2008), a recognition of our commitment to exceptional craftsmanship, design quality and professional project delivery. From new-build homes and extensions to renovations and structural works, we provide a fully managed building service with attention to detail at every stage. Trading as Eureka Energy, we specialise in plumbing and heating, bespoke bathroom installations, air source heat pumps and air conditioning systems. What sets us apart is our technical expertise and industry-leading accreditations. We are proud Daikin Partners, MCS accredited (allowing us to apply for the Boiler Upgrade Scheme grant on behalf of our customers), Gas Safe registered, F-Gas certified, and members of NAPIT and REFCOM. This ensures every installation meets the highest standards of performance, efficiency and compliance. Whether you require award-winning building work or specialist mechanical and renewable energy services, Ashford & Thompson and Eureka Energy offer a knowledgeable, trustworthy and professional service you can rely on.
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Latest review:
Bathroom Fitting- 27 Feb 2026
Look no further, these guys are the best. Professional, knowledgeable, great communication and the highest standards of work. Recommend 100% and then a cherry on top.
BC5 construction ltd
No reviews yet
Extension Builder in Southampton, South East England
We undertake all aspects of building work from new builds extentions loft conversion's patio’s etc. we can help you from the start to design and build your dream with over 40 years experience
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Nixon builders
No reviews yet
Extension Builder in Southampton, South East England
Small family run business with 3 generations working together with over 40 years experience Very reasonable price, super reliant and very efficient . Will do small jobs like repairs to building a house from scratch. All bricklaying and ground works don't hesitate to contact for a free reasonable quote
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Oak Dowel Carpentry
Rating: 5 out of 5
Extension Builder in Southampton, South East England
My name is Tomasz, carpenter-joiner by trade. Oak Dowel Carpentry is reasonably new to the area . My experience and expertise ranges from general carpentry and joinery, through furniture making, custom build wardrobes, kitchens, bespoke furniture, real wood and engineered flooring, framing and partitioning, doors and windows, decking and others. Also providing other building services as decorating, tiling, general building etc.
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Latest review:
Very professional approach, work done with attention to detail. Tidy, reliable and quick, just as it should be! Will definitely recommend!
Decha
New on MyBuilder
Extension Builder in Southampton, South East England
Based in Hampshire, i specialise in home renovations, extensions, and a wide range of building projects—no job too big or small. With over 20 years of experience in the building industry, i bring a high level of skill, knowledge, and attention to detail to every project. From full property renovations to smaller improvements, i take pride in doing things properly. I also have hands-on experience building a house from the ground up—giving me a deep understanding of every stage of the process. My focus is simple: quality workmanship, reliability, and creating spaces my clients are proud of.
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CJC Brickwork
Rating: 5 out of 5
Extension Builder in Southampton, South East England
Looking for a bricklayer/builder? Give us a call - anything from repairs/garden walls to extensions and new builds. We have a reputation of being clean and tidy and taking pride in our work, you will not be disappointed. We will not be beaten on price, and are quality of workmenship is second to none, so please do not hesitate to contact us. Highly skilled No job too small. Quality work men at a quality price. Free quotation. Contact Callum
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Latest review:
Bricklaying- 11 Jan 2021
Very pleased with the work that was carried out, good communication from Callum from start to finish. Would highly recommend.
LJR Construction
No reviews yet
Extension Builder in Southampton, South East England
LJR Construction -Building Contractor operating for over 20 years, specialising in Extensions but have the team to undertake all aspects of building from minor plumbing works, re-pointing to full on House Builds. We pride ourselves on Quality and cleanliness.
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Vortex home improvements ltd
No reviews yet
Extension Builder in Southampton, South East England
we are a reputable company built upon a consistent level of high-quality service and recommendations. All of our work always begins with a free, non-obligatory quote With over 20 years’ experience in the industry We offer a range of services from the larger projects such as refurbs and extensions up or sideways to smaller projects such as plastering and fencing we welcome all jobs however small or large so whether you are looking for a complete refurbishment or renovation or a minor alteration
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WeBuild Drives and Patios Ltd
No reviews yet
Extension Builder in Southampton, South East England
We are a company with over 30 years experience in all aspects of landscaping and groundwork’s, all of our work we guarantee to the highest standard & no job is too big or too small.
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Build It Developments Ltd
Rating: 5 out of 5
Extension Builder in Southampton, South East England
We build homes,extend homes, alter homes, convert lofts & refurbish.
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Latest review:
Extensions- 28 Apr 2026
Gary and the team did an excellent job and whenever issues arose were quick to resolve them. Whenever I requested any help with the areas I was covering they were quick to lend a hand and offer advice. Would happily use the team again for any future projects.

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.

Quality screening

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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.