Extension Builders in Thornton Heath

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (21 reviews)

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Some of our top rated extension builders in Thornton Heath

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AT Line Construction
Rating: 5 out of 5
Extension Builder in Thornton Heath
We are a limited company with many years experinece at construction and usually undertake medium to large size projects like refurbishment, bathroom restoration, loft conversation, extensions and general refurbishment. With high end quality.
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Latest review:
Extensions- 17 Nov 2022
AT Line Construction built our extension and worked on the remodel of the inside of our flat. We are extremely happy with the results. Adison and his team are very professional and friendly. They were able to deal with any changes and problems that came up quickly and sensitively. Part of the build was to renovate a small disused swimming pool - this was a tricky job, and they were able to help us creat an amazing pool. We would definitely recommend them.
Prime Builders Contractor Ltd
Rating: 5 out of 5
Extension Builder in Thornton Heath
Specialists in home renovations, refurbishment and redesign, Our role is to deliver the renovation of your dreams, within your budget.
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Latest review:
Demolition- 19 Sep 2018
Lukas and his team did an excellent job. They arrived on time, were polite and friendly and worked incredibly hard. Would recommend.
alpha green construction
Rating: 5 out of 5
Extension Builder in Thornton Heath
I have 25 years experience in the trade.specialise in innovation and reliability. Trade built company generally around masonry , roofing and all other structural undertakings. We specialise in loft conversions and house extensions , masonry and landscape gardening. We also provide design and build schemes for the above topics.
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Latest review:
Extensions- 14 May 2019
We love Berry, he has followed our project from the beginning to the end and he has been there all the steps of the way. He listened to our ideas and enriched them with more of his adding his special attention to details skills. For every problem, we had along the way he talked to us making sure we were happy with alternative solutions. Plus he is able to create a friendly working environment which makes the invasion of your house less intrusive, he has been very respectful of our space. We can genuinely say that he has gone beyond our expectations, and will be very happy to do future works with him. Luca and Nick
Force Design London Ltd
Rating: 5 out of 5
Extension Builder in Thornton Heath
Force Design London – Expert Construction and Renovation Services With 15 years of experience in the construction industry, we have successfully completed numerous projects, including Loft Extensions and Side Extensions. Together with our highly skilled team, we not only specialize in structural extensions but also provide a wide range of renovation, decoration, flooring, kitchen and bathroom remodeling, and general construction services. We adhere to high-quality standards in all our projects and ensure that all necessary certifications are provided, guaranteeing safe and legally compliant work. Our projects seamlessly blend aesthetics and functionality, creating unique and tailor-made designs for our clients. By carefully analyzing our clients’ needs, we offer budget-friendly and timely solutions. Our commitment to using high-quality materials, meticulous attention to detail, and customer satisfaction has established us as a trusted name in the industry. We can provide a portfolio showcasing some of our completed projects. Get in touch with us
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Latest review:
Carpentry- 17 Feb 2025
Ahmet did an excellent job. Very responsive and came out first to check the job. Will definitely be calling Ahmet back for other jobs.
DL CONSTRUCTION LONDON ltd
Rating: 5 out of 5
Extension Builder in Thornton Heath
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.
Cormaic Construction Maintenance
Rating: 5 out of 5
Extension Builder in Thornton Heath
Cormaic construction and maintenance is a company that deals with a wide range of construction situations. With over 25 years in the trade and a vast knowledge of all aspects of building works. Our services include, Kitchens, Bathrooms, Loft conversions, Extensions, Painting and decorating, Roofing, Tiling, Electrical, Plumbing, Property maintenance and much more. At Cormaic Construction quality workmanship at affordable prices is paramount and we always leave with satisfied customers. No job is too big or too small.
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Latest review:
Gary is very decent, hardworking and a good communicator. He did a really good job to the schedule and price. We are very pleased with it. They still come to do smaller jobs and we are always happy with the quality and care put into the jobs.
Devolli Constructions Ltd
Rating: 5 out of 5
Extension Builder in Thornton Heath
Professional, experienced, reliable and efficient, providing a quality driven service at affordable prices.
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Latest review:
Restoration & Refurbishment- 14 Sep 2024
Ed carried out the complete internal refurbishment of our 3 bed house. The quality of Ed’s work was very high, with great attention to detail. We are architects and very demanding and Ed was very adaptable and happy to take onboard our (sometimes unusual) our requests. We are very happy with the result and would happily recommend Ed to anyone with a similar (or smaller) project.
Dan Stevenson
Rating: 5 out of 5
Extension Builder in Thornton Heath
I have been running my own business for 9 years and I specialise in construction carpentry and building. Over the last 4 years I have mainly focused on extensions and refurbishment work, but have also worked for contractors that undertake small maintenance jobs through to large new build projects. I undertake any size of job, such as 1st and 2nd fix carpentry and kitchen fitting, through to refurbishments and extensions.
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Latest review:
Carpentry- 2 Dec 2018
Great experience with Dan. Completed the work to a really high standard.
MME Contractors Ltd
Rating: 5 out of 5
Extension Builder in Thornton Heath
MME have been established for over 17 years we have worked on both commercial and domestic projects. Assisting from design to finish. All our work complies with building regulations and is always fully insured. We are happy to assist with small projects & larger scale projects. Each individual project always has our full attention and David is on site daily and always available to discuss the progress of the project. We pride ourselves on being dedicated to each project at all times.
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Latest review:
David was very helpful, straightforward and a pleasure to deal with. He gave a fair price and was not phased by our sudden need to bring part of the work forward to accommodate another trade which he did without complaint and in good spirits.
AG Home Improvement
Rating: 5 out of 5
Extension Builder in Thornton Heath
AG Home Improvement over 10 Years of experience in the domestic construction industry Doing loft conversions, house extensions bathrooms ,kitchen's and general refurbishment's
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Latest review:
Plumbing- 17 Aug 2022
Aldi was professional, courteous and completed the job as stated. I hope to use his services again in the near future.
Built 2 Last Group Ltd
Rating: 5 out of 5
Extension Builder in Thornton Heath
Built 2 Last is a family run business, with 15 years experience in the building industry. We have worked on an array of projects and are competent in all fields of general building work. Specially trained employees in bricklaying, plastering, decorating, landscaping and roofing. Fully insured, with a friendly, ambitious and energetic workforce. We specialise in extensions and refurbishments and run all aspects of the build from design to consultation to second fix electrics and plumbing.
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Latest review:
Jess painted my hall way and put laminate flooring in my lounge. He was prompt and reliable, I was impressed with the how quickly and professionally it was done, he was extremely tidy and put my sofa back so I could still access my lounge in the evenings whilst the work was going on. He was professional at all times, and even helped me with the colors, I would highly recommend him.
Ernest Sergy Building Services Ltd
Rating: 5 out of 5
Extension Builder in Thornton Heath
Ernest Sergy Building Services LTD is a general building company specialising in demolition, structural and ground work, interior and exterior refurbishments, renovations, loft conversions, extensions and other aspects of general building work.
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Latest review:
Extensions- 26 Aug 2022
Very happy with the work from Ernest. Nothing was too much trouble, and any issues along the way he just sorted. The team worked extremely hard and were all polite. I’d really recommend working with Ernest and his team and will be using him again for sure.
Fenner Construction LTD
Rating: 5 out of 5
Extension Builder in Thornton Heath
Bricklayer and general builder with 15 years' experience in construction. I have a reliable and hard working team around me. Throughout the years, I have met a great network of trusted sub-contractors, which I often call in on larger projects. Please do not hesitate to pop me a message if you have any queries, or if you wish to visit a current job to see my work, I am more than happy to accommodate this. Thanks, George
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Latest review:
Conversions - General- 6 May 2025
Thank you George for doing such a great job! Clear communication throughout the process and guidance on how the work could be done. Really pleased with finished work!
BM TILING
Rating: 5 out of 5
Extension Builder in Thornton Heath
Build & Renovate BM is offering free estimates and the best ideas on any project you aim to achieve. We are happy to assist you by sharing our experience in delivering a great finished project in detail. Perfect finish at the right price; No stress on the journey. Fully insured. Work warrants. Kind Regards Byli on behalf Build & Renovate BM
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Latest review:
Tiling- 4 May 2026
Really great experiences tiler restored our original floor.
Crown plastering & building
Rating: 5 out of 5
Extension Builder in Thornton Heath
A family business run by father and son with over 30 years experience combined. Being a family business our work is our reputation and therefore all works carried out are to maximum potential! Clean, realiable and great pride is taken leaving customers happy and without hesitation for recommendations. Specialising in plastering, rendering, traditional Italian Venetian polished plaster and all aspects of building works also undertaken.
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Latest review:
Bathroom Fitting- 20 Sep 2017
We hired Luca for a job that involved a variety of work across our entire flat. Being totally new to renovation work and having been stung by other builders, meeting Luca was a breath of fresh air – he was friendly, helpful and honest. Luca did an great job for a very reasonable price. He’s fairly new to contracting bigger jobs, but he’s got a lot of previous experience as a tradesman and his plastering in particular was perfect – we’ve had loads of compliments on the quality of his walls and ceilings. He was always on time, always communicated with us fully, and was a pleasure to have around the flat. He made a real effort to keep disruption as minimal as possible and was very patient with us about stuff needing to be moved from one place to another. It wasn’t the easiest job and there were a couple of problems and extras, but Luca takes a lot of pride in his trade and worked extremely hard to keep us happy. We had a couple of plumbing issues arise but he went well above and beyond to resolve them, coming back for 2 days after the job was due to be finished to make sure that everything was working properly. This is far more than we expected, and we did really trust that Luca wasn’t the sort of person that would leave anything unfinished. We’re so chuffed that we met Luca and with the excellent work he did, and would love to work with him again. Luca is going to go on to big things, so if you get the chance to hire him now, we'd recommend him without hesitation.
Rich Ellis Landscaping & Groundworks
Rating: 4.9 out of 5
Extension Builder in Thornton Heath
My business offers a full landscaping and groundwork service. I have been in this business for 30 years and undertake both large and small scale projects. I have relevant qualifications and insurances and aim to offer great service at a reasonable price.
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Latest review:
Groundwork & Foundations- 11 Aug 2026
Rich assessed the job, provided a reasonable quote and completed the job quickly and efficiently. We've had no problems with our drain. We also appreciate the he left the space clean after his work. Would contact again for further needs

Top rated Extension Builders

Our Extension Builders in Thornton Heath, are rated 4 out of 5 based on 21 reviews from customers like you.

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

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 Thornton Heath 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 Thornton Heath who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Thornton Heath?

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

Find extension builders in Thornton Heath with MyBuilder

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

Step 2: Compare different extension builders in Thornton Heath

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

Step 3: Hire Thornton Heath extension builders with confidence

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

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

What to ask a Thornton Heath extension builder before hiring?

Before hiring an extension builder in Thornton Heath or extension building company in Thornton Heath, 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 Thornton Heath?

An extension builder in Thornton Heath 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 Thornton Heath 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 Thornton Heath?

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 Thornton Heath 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 Thornton Heath 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 Thornton Heath

Can an extension builder in Thornton Heath help with planning permission?

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

Many Thornton Heath 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 Thornton Heath help with materials and finishes?

Yes, most extension builders in Thornton Heath 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.