Extension Builders in Southfields

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (19 reviews)

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Some of our top rated extension builders in Southfields

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Palmers air condition ltd
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Extension Builder in Southfields
Construction
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Michael
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Extension Builder in Southfields
My name is michael and I specialize in bathrooms fitting and kitchen fitting.
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Sher group of builders Ltd
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Extension Builder in Southfields
Hi everyone, Please get in touch for reasonable quotation : ( SHER GROUP OF BUILDERS LTD) Company no : 12538248 Based in Hayes (west London) Loft conversion, extension, new build home, Complete home renovation,bathroom,kitchen Electrical,plumbing, All building work undertaken
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Mandeep
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Extension Builder in Southfields
Hi I’m professional builder. Specialist in all type of building work
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Enc Build
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Extension Builder in Southfields
Hi , as sole trader extension builder and loft conversion specialist, I have been in this industry for 7 years. I operate primarily in North part of London and surrounding areas, providing quality construction services to homeowners. My skills include structural alterations, project management, and a strong attention to detail, allowing me to handle everything from following structural drawings to the final touches. I typically undertake loft conversions, extensions, renovations, and general building work, all tailored to meet the unique needs of each homeowner. If you have any questions or would like to discuss a project, feel free to reach out!
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evergrand
New on MyBuilder
Extension Builder in Southfields
We are a reliable and hardworking building team specialising in all aspects of residential construction and renovation. Our services include home extensions, loft conversions, full property refurbishments, interior renovations, roofing works, carpentry, plastering, flooring, painting & decorating, kitchen and bathroom installations, and general building work. We take pride in delivering high quality workmanship, honest communication, and completing every project to a professional standard. Whether it’s a small renovation or a full house transformation, we are committed to providing efficient, clean and reliable service from start to finish. Customer satisfaction is always our priority.
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Luxury design masters Ltd
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Extension Builder in Southfields
Hi we are in LDM (Luxury Design Masters LTD) the best team to build your home dream we are specialist in commercial & domestic renovation we can make your place look luxurious and we can work it on your budgets we do all building works from AtoZ we are £10m insured cover we done Westfield, Sweeden, Gloucester quays shopping centres and many luxury homes we can proven it. we try to help many projects to be look gorgeous and beautiful. All our builders high qualified with many years experience so you can trust us and put your home in the safe hand. In LDM we works hard to make all our customers happy as your reference is very important for us hope to see you soon 👍🙏
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Mg groundworks
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Extension Builder in Southfields
Father and son ground works team anything from footings to steel work Inclusive - driveways -patios - drainage - fencing - machine driver Many years of experience small to large projects taken on Full building projects taken on too From new builds to conversions
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constructions in level
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Extension Builder in Southfields
Our company, Construction in level, specializes in construction works, groundworks, performing each project with passion, precision, and dedication. With our experience and attention to detail, we ensure the highest quality of service, meeting the expectations of even the most demanding clients. By choosing us, you choose reliability, professionalism, and satisfaction with the results.
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Amrit pal singh
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Extension Builder in Southfields
I am very Hard work and kind loyal and go to work daily and only take breaks on Sundays and start jobs at 8:00 o'clock and end at 5:00 o'clock at Late afternoon.
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Marius dumitriu
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Extension Builder in Southfields
Your builder is here
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Jagjit Johal
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Extension Builder in Southfields
Hi I’m johal builder we r doing extensions and interior work and 20 years experience for construction site work
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Smiths
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Extension Builder in Southfields
Guttering & Handyman Services You Can Rely On Need help around the house? I provide reliable guttering services along with a range of general handyman work — whether it’s fixing, fitting, or freshening things up. From blocked gutters to small repairs and odd jobs, I take pride in quality work and friendly, professional service every time. ✅ Gutter cleaning, repairs & installation ✅ Home repairs, maintenance & odd jobs ✅ Free quotes & fair pricing ✅ No job too small ✅ Clean, tidy, and dependable Get in touch today for a free quote — I’ll get it sorted, no stress.
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iCAN Construction Ltd
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Extension Builder in Southfields
iCAN Construction is a passionate team of trustworthy qualified builders and experienced professionals. We pride ourselves on providing a first-class service alongside high standards of work. We specialise in: Extensions, Loft Conversion, Property Refurbishments, Bathroom Renovations, Property Maintenance and Groundworks Whether it is a kitchen, bathroom, or full house renovation, with our 20 years of experience and excellent reputation you can be confident your ideas will be joined with our craftsmanship to produce your dream home. Throughout these years ICAN Construction has gained a reputation as a quality renovator and a trusted contractor, which can confidently take on any projects anyone can have in mind. From concept to creation helping you build the home of your dreams.
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ALTROBUILDERS LTD
No reviews yet
Extension Builder in Southfields
Whether you're looking to build your dream home, renovate a commercial space, or undertake a large-scale construction project, we have the expertise and experience to exceed your expectations. With more than 10 years of experience in the industry, we complete every project professionally, on time and in collaboration with the needs and ideas of property owners
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Phoenix Logis Limited
Rating: 1 out of 5
Extension Builder in Southfields
We have many years experience in the UK market in refurbishment and domestic and non domestic property alterations. This includes heavy structural alterations and house extensions and reconfigurations for very high end clients delivering in the range of Prime and Super Prime Projects for very high end clients. This getting the projects from cradle to grave making sure we meet our targets on time and budget making sure the clients are happy with the results we deliver. Our works starts with the assistance of making all the necessary paperwork for the client, ground works, internal refurb, heavy and light structural alterations, in a few words all trades in our hand for internal and full external works this including scaffolding.
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Latest review:
Restoration & Refurbishment- 1 Feb 2026
The WORST experience I have ever had with a tradesman. I would strongly advise others to stay clear. There was no schedule of works at any stage. Adrian failed to plan, failed to communicate agreed works, & did not even tell his own workforce what they were meant to be doing. There was no evidence of professional oversight or management, resulting in chaos & extreme delays. I was repeatedly misled. He stated that Building Control had been contacted & paid for; but when I contacted them directly they confirmed no application or payment had been made. He damaged my property & instructions were ignored. He was rude, aggressive & shouted at me in my own home, which I found intimidating as a woman. Neighbours also complained about his behaviour. Despite multiple extensions, the job was left unfinished with little communication. He caused significant stress & a serious loss of time & money. The matter is now being resolved through the courts. I would NOT recommend him under any circumstances

4.2

Top rated Extension Builders

Our Extension Builders in Southfields, are rated 4.2 out of 5 based on 19 reviews from customers like you.

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What types of services are offered by local extension builders in Southfields?

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

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

What are the hourly rates of extension builders in Southfields?

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

Find extension builders in Southfields with MyBuilder

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

Step 2: Compare different extension builders in Southfields

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

Step 3: Hire Southfields extension builders with confidence

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

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

What to ask a Southfields extension builder before hiring?

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

An extension builder in Southfields 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 Southfields 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 Southfields?

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 Southfields 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 Southfields 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 Southfields

Can an extension builder in Southfields help with planning permission?

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

Many Southfields 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 Southfields help with materials and finishes?

Yes, most extension builders in Southfields 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.