Extension Builders in Balham

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (20 reviews)

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Some of our top rated extension builders in Balham

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ALSOAA CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Balham
⸻ Hello! I'm [mohammad], owner of [alsoaa construction ltd]. We have years of experience in home renovations and construction, and I pride myself on providing high-quality, exceptional customer service. Whether you need kitchen and bathroom renovations, painting and decorating, or custom tiling, my team and I are committed to making your vision a reality. We listen carefully to your needs and offer honest advice to ensure long-lasting results.
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Latest review:
Tiling- 29 Nov 2025
Recently had some tiles and splash backs put up. Excellent communications with Mohammad, his team was very punctual and professional the work was done to a very high standard. Pleased with the end result and will be using his service again. Highly recommended thanks again to Mohammad and his team.
BRANDON RENOVATION
No reviews yet
Extension Builder in Balham
Quality is our hallmark with warranty
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Ev max pro
Rating: 4.7 out of 5
Extension Builder in Balham
Reliable. Skilled. Trustworthy. *Qualified Electrician *kitchen fitter *Bathroom fitter *All General Repair *Extension and Pergola I take pride in delivering clean, precise, and high-quality work — on time, every time. Your home’s needs are in good hands. Whether it’s repairs, maintenance, or improvements, I’ve got the skills and dedication to handle it all. You don’t need to worry — just leave it to me. While you focus on your daily life, I’ll make sure everything at home runs smoothly. Trust me to get the job done right, with care and attention to every detail.
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Latest review:
Handyman- 18 Feb 2026
Excellent very amenable
JERRY BUILDING LIMITED
No reviews yet
Extension Builder in Balham
Dynamic and highly experienced builder whit over 35 years in residential construction. Taking on variety of projects Lofts,Extensions, Renovations from concept to completion. Dedicated to quality in craftsmanship and delivering results to client expectations . Managing projects hands an. Fully insured whit public liability coverage. Reference from clients
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Orville
No reviews yet
Extension Builder in Balham
I'ev been doind and decorating for over 15 years, there is no job too big or too small that i won't be able to do . I'm very hard worker, honest, reliable, I always ensure any job I started is complete to perfection. I do all my jobs to the best of my ability , I always ensure any job I started is complete within the required time frame. I cam travel up to a 2 hours from my location to work
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BLE CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Balham
BLE stands for Best Lofts & Extensions.We are a professional building company based in South West london. BLE are specialist in loft conversion,home extensions,garage conversion,as well new builds.We also conduct any projects such plastering,brickwork and all interior and exterior works.
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Latest review:
Extensions- 16 Oct 2023
Mariusz & his team are amazing, from start to finish they have been fantastic & we cannot recommend them enough. We met with a couple of builders for quotes & felt like our project would be in good hands with Mariusz, we instantly liked him & had a good feeling. He was happy to talk through everything with us, answer our questions & nothing was a concern or a problem, this continued throughout our whole project. Communication was faultless throughout, which in our past experience is unheard of & Mariusz was on site multiple times a week. The team were polite, hard working, tidy & professional. Andrew & Pavel were the main guys on our build & they were amazing. They arrived the same time every morning & worked so hard 6 days a week. We cannot believe how quickly & professionally they carried out each stage of the build, which ensured all timelines were met. There was no cutting corners, the quality of work was excellent, with many of our neighbours coming over to comment on their craftmanship, especially the brick work. Our local council building inspector assigned to our project was satisfied & complimentary of the build throughout, no concerns were raised. Doing any size home renovation project & finding someone you can trust & rely on can be daunting. However, Mariusz & his guys really are who you hope to work with. If you are looking for a team then look no further, you will be in safe hands. It's been an amazing journey & a pleasure to work with Mariusz. Thank you
MMA RENOVATIONS LTD
New on MyBuilder
Extension Builder in Balham
MMA Renovations Ltd is a leading UK-based construction and property maintenance company offering a complete range of professional services. We specialize in electrical work, including rewiring and extensions, as well as plumbing services like bathroom and kitchen installations, pipe repairs, and more. Our expertise also includes loft conversions, home extensions, full house renovations, flooring, carpentry, painting and decorating, and general building work. Whether you need a small repair or a complete property makeover, we ensure top-quality workmanship, safety, and customer satisfaction. At MMA Renovations Ltd, we pride ourselves on reliable, affordable, and tailored solutions that bring your vision to life.
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Hennow Construction
Rating: 5 out of 5
Extension Builder in Balham
Hi, we are a small father son business with over 30 years of building experience. As both father and son are bricklayers we tend to take on jobs such as: extensions brick and block work; out buildings; garage conversions; garden walls; patios and drive ways. Formerly Owens Construction, we have now merged with close family friends to expand the brand and become Hennow Construction.
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Latest review:
Bricklaying- 24 Apr 2019
Jake and Harry did an amazing job with our front wall and fence in the rear garden. We got three quotes for the job and they were the cheapest but also came across professionally. It wasn't a straight forward job, it was was using reclaimed materials that were varying size and shapes. I was also quite particular on the look, I wanted the brickwork to match our house, they took care to match the pointing and bricks but offered advice on how we could save money whist still getting the look we wanted. They arrived everyday on time, they were reliable, honest and extremely hardworking. They also kept us in the loop throughout the work making sure we were going to be happy with the end result. I have already recommended them to friends and will use them again for our next project. Thumbs up from us!
Seymour Building Services Limited
Rating: 5 out of 5
Extension Builder in Balham
Seymour Building Services would look after your complete project. We would organise all our tradesmen so the right trades are there at the right time. This leaves you with no headaches. Just one number to call for our friendly help and advice.
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Latest review:
Kenny and team did a brilliant job replacing my old lean-to porch area for a new smart extension with windows, door and even a cat flap. They were on time, organised, efficient and took away all the old materials and rubbish. Kenny was helpful when he visited and prompt in replying to all communications and supplying quotes and invoices. I am very happy with their work and wouldn't hesitate to recommend their services.
ASECO Electrical Solutions
Rating: 5 out of 5
Extension Builder in Balham
I'm a qualified and self employed electrician with over 10 years experience in electrical industry. I specialise in all aspects of domestic and commercial installations. With me you will get high quality standard of work and reliable services at competitive price.
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Latest review:
Electrical- 29 Apr 2022
Did really great work for a fair price. Will definitely use again. Very informative and he helped get plugs in the right place
I&B CONSTRUCTION SERVICES LIMITED
No reviews yet
Extension Builder in Balham
I&B Construction Services Ldt is a Mitcham-based family run company with more than 25 years of experience in the Construction industry. Due to our great workload capacity, we can easily run several construction projects simultaneously while doing 60nr bathroom renovations per month for local authorities in the South London area. Our infrastructure and experience in house refurbishments and new builds, allow us to provide our clients with a complete, hassle-free specialist service.
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BL Carpentry
Rating: 5 out of 5
Extension Builder in Balham
Hello! My and my team are working on all kind of construction projects trough London. We've got 15 years of experience and many happy and returning clients.
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Latest review:
Multiple fitting out works, eg fitted cupboards, kitchen fitting. Top notch. Knowledgeable, fair, prompt. Would enlist his help again.
Visu Verum Construction Ltd
No reviews yet
Extension Builder in Balham
Visu Verum Construction offers you a total property management solution. From handyman services to home refurbishments, no matter how big or small the job may be, we are here to help. With over 10 years experience within the Design, Build and Interiors property sectors, we are experts in the field and use our superior knowledge of property systems and how to maintain quality of work to keep your property in tip top condition.
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RSP SPIRE LTD
No reviews yet
Extension Builder in Balham
IT is a full service building company specialising in home renovations, home extensions, full maintenance and building alterations across the London. If your goal is to add value to your most important asset, get in touch and let us know what you are wishing to achieve, or read more about our wide range of home improvement services, before getting a no obligation estimate.
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london construction company
Rating: 5 out of 5
Extension Builder in Balham
Established in 1994 , Family run business . Friendly reliable service , Extensions / lofts and landscape specialist
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Latest review:
Extensions- 15 Feb 2026
Incredibly professional, super fast response, great quality of work, sound and thorough advice, available and patient at all times - Terry did a great job putting together my garden office installation at short notice despite inclement weather. I can vouch sincerely for his work and will definitely recommend him
Surrey Build and Maintain
Rating: 5 out of 5
Extension Builder in Balham
Surrey Build is a newly formed business that focuses its efforts on residential dwellings. Wheather you are looking to extend upwards or outwards, or refurb we, at Surrey Build have it covered. We pride ourselves on maximising clients budgets to their full potential whilst providing an uncompromising service.
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Latest review:
Extensions- 1 Jun 2020
We choose Surrey Build & Maintain because we felt like Dan and the team really listened to our vision for the extension and shared the desire to produce something that would be an amazing improvement to our house. As with any build, there were many hurdles to overcome. Dan and the team were always there on hand to deal with challenges and overcome them in a professional and experienced fashion. We really felt that Dan was on our side and was able to find numerous ways to improve the project as well as saving money by assisting to redesign the structural plans as they were unnecessarily overzealous. The team was punctual and hard-working, often working on weekends to increase the rate of construction. We stayed at the house during the build and Dan made every effort to make the impact on us as minimal as possible, laying dust sheets, cleaning up each day and keeping a temporary kitchen available to us during the project. We took advice on key features like doors and windows from Dan during the build and absolutely loved his design input. The end result is fantastic and we barely use any other room in the house! Since Dan began the kitchen extension we have also employed Surrey Build to overhaul our bathroom as well. Highly recommended!

4.2

Top rated Extension Builders

Our Extension Builders in Balham, are rated 4.2 out of 5 based on 20 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Balham?

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

Find extension builders in Balham with MyBuilder

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

Step 2: Compare different extension builders in Balham

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

Step 3: Hire Balham extension builders with confidence

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

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

What to ask a Balham extension builder before hiring?

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

An extension builder in Balham 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 Balham 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 Balham?

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 Balham 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 Balham 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 Balham

Can an extension builder in Balham help with planning permission?

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

Many Balham 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 Balham help with materials and finishes?

Yes, most extension builders in Balham 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.