Extension Builders in Southwark

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

Easily find verified Southwark Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Southwark.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Southwark

3600 Results

Sort by:

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.
Get in touch
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
Raj
Rating: 5 out of 5
Extension Builder in Southwark
I’m a builder with many trades I will do anything you like
Get in touch
Latest review:
Demolition- 26 May 2026
Raj and his team did a fantastic job demolishing my concrete shed and brick flowerbed, and really efficiently in the middle of a heatwave! He didn’t reschedule, was honest and really friendly. Top class service, I highly recommend.
Making Rooms Ltd
Rating: 5 out of 5
Extension Builder in Southwark
We are a south London-based building firm that specialises in breathing new life into homes. We work closely with our clients,alongside visionary architects, engineers and designers to unleash potential in their house and realise new and improved spaces. Whether your house requires expansion,our team of specialists work tirelessly to deliver the perfect home for you. Making Rooms are a group of passionate and multitalented individuals whose soul mission is to make your living spaces better.
Get in touch
Latest review:
Extensions- 25 Jul 2024
Garden Room done to ridiculous standard. See pics. 5 star work from the lads.
Ridi Building Services
Rating: 5 out of 5
Extension Builder in Southwark
Hi. My name is Ridvan and I have been working on construction industry for more than 16years. All these years I worked hard to get the experience how to start and finish the job in high standards. 7 years ago I started working for myself. I am expert on Loft Conversations, extension Restoration & Refurbishment, Pitching Roofing and Carpentry (cupboards, doors, wooden floor and all other things that are wood working). My motto in my work ethic is, treat others as you would like to be treated.
Get in touch
Latest review:
Carpentry- 18 Sep 2021
Out of two chosen workmen Ridvan was the one who followed up on our connection,then visited,we agreed price and start date. Turned up as agreed. His manner and work ethics are outstanding, going that extra time to finish the job to a high standard and fine detail. Could not wish for a better outcome, from an also pleasant man. Thank you Ridvan, will be using you again.
Sam
Rating: 5 out of 5
Extension Builder in Southwark
Comprehensive Experience in Construction, Kitchen Installation, and Other ServicesDear Sir/Madam,I would like to share with you my extensive and comprehensive experience in the field of construction, including kitchen installation and repair, tiling and carpentry, plumbing, electrical work, as well as building and bathroom renovation.I have been working in this field for several years, successfully executing a variety of projects, both small and large, in different sectors such as residential, commercial, and educational buildings. I have provided my services to several satisfied clients and have always strived to achieve their complete satisfaction by delivering high-quality work within specified deadlines.My experience is characterized by skillful leadership of work teams and coordination of efforts among different technicians to ensure efficient and effective project execution. I am constantly seeking to develop my skills and learn from my experiences to deliver the best in every project.If you are looking for a specialized and reliable professional to execute your project, I am here to serve you. I am honored to offer you my services in the fields of construction, kitchen installation, and others, and look forward to working with you to achieve your goals and meet your needs.Thank you for your trust, and I look forward to the opportunity to collaborate with you.Best regards, [sam]
Get in touch
Latest review:
Good job.Outstanding worker.
EBV construction
Rating: 5 out of 5
Extension Builder in Southwark
All building construction loft conversion Extension Refurbish Carpenter Plastering rendering Dry lining Garden walls
Get in touch
Latest review:
Plastering- 22 Jul 2023
Mr Meta and his skilled team completed the plastering job as promised with high standard,good, honest and profesional. Will be hireing on other jobs.Many thank👊👍
Plaza
Rating: 5 out of 5
Extension Builder in Southwark
With over 10 years of experience in the London construction market, our company provides a wide range of professional building and renovation services. We specialise primarily in all types of tiling work — whether for bathrooms, kitchens, gardens, or outdoor areas. In addition, we handle smaller tasks such as painting, repairs, and installations, as well as full-scale plumbing, electrical work, and complete refurbishments. We take great pride in our reliability, punctuality, and the high quality of our workmanship. Every project is carried out with exceptional attention to detail, ensuring cleanliness, precision, and a solid guarantee on all completed work. I’m are always happy to offer expert advice and support throughout the renovation process, including assistance with sourcing and delivering materials needed for the job. My works covers a wide range of projects — from full bathroom renovations to flooring, kitchen upgrades, exterior work, and bricklaying. Upon request, I can also provide client recommendations from previous projects to confirm the quality of service
Get in touch
Latest review:
Kitchen Fitting- 19 Aug 2026
David did an excellent job of installing my kitchen. He went above and beyond to make sure the installation deadline I had was met, and was very helpful and professional. I would highly recommend him.
Cera Building Renovation
No reviews yet
Extension Builder in Southwark
Our experience allows us to be efficient and effective.We specialise in Extension, Loft Conversion, Renovation, Electric, Plumbing, Kitchens, Bathrooms, Plastering and Rendering, Painting and Decorating, and this allows us to transform any part of your home into the vision you have for it and this is what gives us the passion for what we do! You can find us on Google Instagram or Facebook.
Get in touch
Fixer/dryliner
No reviews yet
Extension Builder in Southwark
Professional wall/ceiling fixer dryliner with 5 year experience
Get in touch
G G Property Development Limited
Rating: 5 out of 5
Extension Builder in Southwark
We are a friendly hard working company. We pride ourselves on archiving high standards of works in short time periods. We have carried various works from new builds, complete property refurbishments, extension, loft conversion, kitchens, bathrooms, electrical and plumbing works, plastering, rendering. All works are guaranteed and fully insurance. We are a commercial, industrial and domestic company. We have many photos of works and website shall be finished in the near future.
Get in touch
Latest review:
Loft Conversion- 5 Dec 2018
Firstly the date of job posting and date of completing is all down to me not being ready with finances!! Secondly, and more importantly, GG Property were the most wonderful and professional bunch of lads you can hope to met. The work was done with such enthusiasm and to such a high level of detail. We could not be happier with the finished job. Thirdly, the great building work aside, GG Property were polite, happy, friendly, punctual and great communicators. All emails answered swiftly and with accurate information. No question was to silly and no concern (this was our first major building working) was to small to be addressed. Finally we are so pleased with work we are awaiting a quote for our bathroom and look forward to getting that job completed!! In short my experience with GG Property was nothing but top quality work and customer service. Any fears of the classic 'cowboy builder' could not be further from the truth; GG Property are a hard working truly lovely bunch and we would highly recommend them.
Mati Construction
Rating: 5 out of 5
Extension Builder in Southwark
We are a family company with over 15 years of experience. Our team is highly professional. We offer wide range of services which include: - lofts, extensions - bathrooms and kitchens renovations - painting, decorating, wallpaper - flooring (all kinds) - roofing - property maintenance - building renovations/ rooms renovations - plastering, tiling, rendering and many many more!
Get in touch
Latest review:
Extensions- 15 Nov 2022
Pawel and his team did a great job with our front porch, always punctual, polite and good quality work. Will be hiring them again.
Skyline renovating ltd
No reviews yet
Extension Builder in Southwark
Welcome to Skyline Renovating Ltd. We specialise in renovation, construction, and development. We cover areas London and East Sussex.Our experienced team delivers high-quality projects on time and within budget. Whether updating your home or building new structures to developing properties, we bring your vision to life. Trust us to handle all your construction needs with professionalism and excellence.
Get in touch
HOME DESIGN 4 YOU LTD
Rating: 4.8 out of 5
Extension Builder in Southwark
Working closely with our clients, Home Design 4 You provides a Single Point One-Stop, Innovative Architectural, Creative Interior - Bespoke Design, 3D Visualisation, Project management and Design & Build services for all types of residential development and Home Improvement projects.
Get in touch
Latest review:
Extensions- 19 Jun 2016
Neno is a very warm-hearted and genuine person. He gives his 100% to the job. He is also very prompt when it comes to communication and is always available by phone/text/email. He has a vast experience and good technical know-how and produced excellent plans and drawings. His quotes were very reasonable and offer excellent value for your hard earned money. Having been his client, I am genuinely inclined to believe he is a person who would never "rip off" his clients. He is a man of his word and does what he says. However, Neno's honesty and confidence can be a bit blunt at times. He can be quite “direct” with his opinions and this may rub off some people the wrong way, e.g. your local Council Planning officer may be an a**hole, but if you "confront" him, he will definitely not make things any easier for you- nevertheless, Neno dealt with all the Council red tape and followed up the Planning Permission Application to its conclusion. We finally got permission for extending the property much less than what we had expected initially- apparently our local Council (Hillingdon) has its own set of Draconian conservative rules that we were unaware of- but we have postponed the actual project work due to a recent change in personal circumstances. Summary: Based on my personal experience, I would DEFINITELY RECOMMEND Neno as a bona fide Tradesman on MyBuilder.com.
Knight Building Services
Rating: 5 out of 5
Extension Builder in Southwark
I'm a builder who has spent many years in training to get my experience along with on site work. I cover all areas of the construction industry with a competitive price for a competitive market. I am hardworking and I aim to please. Customer satisfaction is number 1 priority.
Get in touch
Latest review:
Joinery & Cabinet Making- 30 Jan 2025
Mark is a top guy. Listened to what we were after, came up with solutions, was punctual, clear in his communications and delivered exactly what we wanted. Excellent quality work, clean and tidy. Using again without hesitation.
ArhiTERRA design and build
Rating: 5 out of 5
Extension Builder in Southwark
We are a family business with a dedicated team specializes in works of any size ranging from the design through to building process. Our experience is vast and we stand for fast and high quality services beeing in construction industry for over 10 years . The following services are available: -design and build of extensions and lofts, -refurbisments, -swimming pools and outdoor spaces -landscape design More details can be found on our website.
Get in touch
Latest review:
Architecture- 5 May 2018
Contracted to provide options for a new garage office and storage solution. They turned up promptly and were very polite and professional. Through many discussions they ultimately offered up a very good bespoke solution for our situation and once planning is approved we will have no issue with looking to them to complete the actual build. We have had a lot of issues in the past finding reliable trades but with ArhiTERRA design and build we felt confident in their ability to both visualise and implement the build as well as follow through on their promises. I would say that for anyone considering discussing a project with them that it is worth your time to at least have a meeting with them and judge for yourself.
MSKBUILDERS
Rating: 5 out of 5
Extension Builder in Southwark
Bathroom Specialists Builders Building Contractors Conservation Specialists Custom Build/Self Build Extensions Garage Conversions Loft Conversions Refurbishments Work for Disabled
Get in touch
Latest review:
Kitchen Fitting- 4 Feb 2020
Msk builders did a good job with my kitchen very professional and reasonably priced, I would recommend them.

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.