Extension Builders in Southwark

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (18 reviews)

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Some of our top rated extension builders in Southwark

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A&B London Construction Services LTD
Rating: 5 out of 5
Extension Builder in Southwark
With experience and knowledge of the industry of more than 10 years duration, we have developed a reputation for providing both a high quality and friendly service. When you need help with any type of building work, Domestic or Commercial, please contact us anytime we will be happy to help.
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Latest review:
Restoration & Refurbishment- 29 Mar 2018
A pleasure to deal with . Agim and his team worked hard to a very good standard.They often worked later than i would expect so that they were ready to move onto the next stage of the job the following day. Agim was very knowledgeable of all building regulations and was ready to offer me solutions when they were needed. All his team were courteous , polite and also knowledgeable. This was the first time I have used A&B but I would have no hesitation of using them again and recommending them to others.
NSL Sons & Co
No reviews yet
Extension Builder in Southwark
NSL Sons and Co – Expert handyman and repair services you can trust. Fast, reliable, and high-quality work for every home and business.
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Uk Pro Building And Tiling Ltd
Rating: 3 out of 5
Extension Builder in Southwark
15 years experience ,and fitting bathrooms with passion and paying attention to details,to deliver the job in highest quality for our clients.Always available with smart solutions and advice.Saving for you time and money. We are looking forward to work with you Thank you
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F builder
No reviews yet
Extension Builder in Southwark
No job is small..I m here to help with my best ability
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Dexacon Ltd
No reviews yet
Extension Builder in Southwark
We have over 25 years experience working in construction, covering all areas of the building. With a dedicated team for structural works we can do the majority of work in house. We are also bolstered by a number of incredibly efficient and highly skilled contractors to ensure all projects are completed on time and on budget
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Deans Property Preservation
No reviews yet
Extension Builder in Southwark
At Deans Property Preservation, we pride ourselves on our personal service and attention to detail, working closely with our clients to restore and create beautiful homes. With 35 years of experience, we work on buildings of all sizes and ages, taking on the design and build of contemporary kitchens, bathrooms and extensions, working in both residential and commercial settings. We have vast amounts of experience in refurbishing period properties across the capital.
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DL CONSTRUCTION LONDON ltd
Rating: 5 out of 5
Extension Builder in Southwark
Dl construction London is a small family business based in London, that prides itself on quality work for the right price. We offer bathroom and kitchen renovations, extensions and loft conventions , home alternations and refurbishment, plumbing and heating and small building jobs . Our clients needs are our top priority. - certified installer - Dbs checks up to date - asbestos certified
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Latest review:
Bathroom Fitting- 2 May 2024
I have employed DL Construction to install a new kitchen and bathroom. They are still working in my house but so far their attitude towards their task and helpfulness have been exceptional. I can not comment about the final product yet but I am sure everything would be finished to a high standard. Nothing seems to be a problem for Javi. He always says 'yes please' and I think that is his middle name. I couldn't have asked for better. Well done (so far) Javi and everyone in DL Construction.
Richard Group
No reviews yet
Extension Builder in Southwark
We are a trusted company providing a comprehensive range of repair, maintenance, and improvement services for residential and commercial properties. Our skilled team handles everything from everyday fixes and general upkeep to larger projects, always delivering high-quality workmanship with efficiency and care. We pride ourselves on reliability, professionalism, and clear communication, ensuring every job is completed on time, within budget, and to the highest standard.
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T.M Construction.ltd
Rating: 5 out of 5
Extension Builder in Southwark
TM Construction.ltd, established in 2007, is a trusted building company specialising in extensions, loft conversion,refurbishments, and general construction projects. With over 15 years of experience, the company is known for its high-quality workmanship, reliability, and customer-focused approach. From groundwork and structural works to finishing touches, TM Construction delivers complete building solutions on time and within budget.
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Latest review:
Roofing (Pitched)- 6 Mar 2026
Thomas was a pleasure to work with. Polite and accommodating. Would definitely hire him again.
O G Electrical
Rating: 5 out of 5
Extension Builder in Southwark
O G electrical is based in Belvedere and Part P registered with Napit and the Electric safety register. All electrical work undertaken, with 25 years knowledge and experience. Re wires , fuseboards , under floor heating , Cctv , lighting , fire alarms , garden and drive lights,commercial fit outs, 3 phase, extract fans all Electrical installs carried out. Installations to new build houses/apartments throughout London and Kent Inspection and testing Eicrs All work guaranteed.
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Latest review:
Electrical- 1 Dec 2020
Olly was cheerful even though confronted with an ancient wiring system and a difficult problem. He came back for a second day and sorted it. There was a callback which he sorted quickly and without complaint
Petre Marius
Rating: 5 out of 5
Extension Builder in Southwark
My name is Petre and together with my friends will form a team of four adept workers.My team is very reliable and respectful of client's property. We work hard to make sure that all the work carried out is to the highest standards
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Latest review:
Plastering- 4 Apr 2019
Petre and his colleague arrived promptly and worked very fast and efficiently. They fitted a new plasterboard ceiling and plastered the whole kitchen in one day. They were polite and tidy. Their work is to a very high standard and I will definitely be using them again.
Griffithstown Group
No reviews yet
Extension Builder in Southwark
Time served builder who takes on general building works
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swift conversions ltd
Rating: 5 out of 5
Extension Builder in Southwark
In Swift Conversions we have a mission, which is to provide the residents of Greater London with no hassle building services where all work exceeds expectations, meets deadlines and offers excellent value for money and we work very closely with our client to ensure complete customer satisfaction. We have many satisfied and returning customers because we provide the best and most comprehensive building services in and around Greater London. We pride ourselves on offering turn key projects including all permissions, certificates, planning, structure drawings and calculations. If you are looking for experienced and friendly building company you can trust then look no further than SWIFT CONVERSIONS. Whether its a query or a quote, shortlist us here and we will be in touch very shortly as soon as we have your contact details.
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Latest review:
We have worked with Alex and his team at Swift Conversions Ltd twice now—first for a house extension and then for a loft conversion and general refurbishment —and we wouldn’t hesitate to choose them again for our next project. From the moment we received the quote to the final completion, Alex was incredibly communicative, reliable, and always had a can-do attitude. Despite the challenges of fluctuating prices in the market, he delivered the project within budget and stayed true to his word. His professionalism and trustworthiness are second to none. If you’re looking for a builder you can rely on 100%, Alex is the one to go to. Highly recommended!
SC General Builders Ltd
Rating: 5 out of 5
Extension Builder in Southwark
Welcome. I am a builder with 25 years of experience. Have completed a large number of projects from small jobs to major projects such as extensions, loft conversions and full refurbishments, residential and commercial. Excellent quality for reasonable price guaranteed. Professional, reliable, affordable. Hassle free service. We cover all aspects. Fully insured. Thank you. Seb
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Latest review:
Conversions - General- 16 Jun 2024
Excellent communication Good price Did exactly what he said he would do and gave advice on other work that we were doing ourselves Really nice guy Very pleased with his work Would use him again
BW Building Services
No reviews yet
Extension Builder in Southwark
English speaking bricklayer from Leeds. Specialising on all aspects of masonry work. From building garden walls to full extensions, and repointing to re building chimneys. All aspects of work undertaken.
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HadleyWoods
Rating: 5 out of 5
Extension Builder in Southwark
HadleyWoods provides the highest quality services for your home, office or commercial building. With more than 25 years experience we have many regular customers who would highly recommend us as a professional and respected service, our secret to this success is purely based on employing only the best workers with years of experience and attention to detail.
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Latest review:
Restoration & Refurbishment- 9 Nov 2024
Hasan did a good job removing my 2 chimney breasts. Quick and professional, will definitely use him again for future works

3.9

Top rated Extension Builders

Our Extension Builders in Southwark, are rated 3.9 out of 5 based on 18 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 Southwark?

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

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

What are the hourly rates of extension builders in Southwark?

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

Find extension builders in Southwark with MyBuilder

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

Step 2: Compare different extension builders in Southwark

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

Step 3: Hire Southwark extension builders with confidence

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

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

What to ask a Southwark extension builder before hiring?

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

An extension builder in Southwark 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 Southwark 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 Southwark?

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 Southwark 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 Southwark 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 Southwark

Can an extension builder in Southwark help with planning permission?

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

Many Southwark 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 Southwark help with materials and finishes?

Yes, most extension builders in Southwark 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.