Extension builders in Thamesmead

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (17 reviews)

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Some of our top rated extension builders in Thamesmead

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ARRA BRICKWORK
Rating: 5 out of 5
Extension Builder in Thamesmead
ArrA Brickwork Team is a small run family business. Covering London, Essex, Middlesex, Kent, Surrey areas. We are offering high quality bricklaying and building services at affordable prices, carried out with 18 years of experience in the construction industry. Our team seriously and punctually to work. We offer all kind of building from small garden walls to the housing and commercial projects.
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Latest review:
Extensions- 23 Feb 2020
We hired Arra brickwork to complete what looked like a straight forward side extension, this soon became very complex due to the angle of the build and the roofing. Whilst we had our own expectations, Aushra was very helpful in presenting more ideas and suggestions in line with what we wanted. She even went as far as building sample model to show us what the build would look like. We found Arra brickwork - Aushra and Authur to be genuinely nice people, they are very polite and very tidy workers and put in so much effort to complete the build, even when we didnt expect them they were there working hard. We had full visibility of spend as Aushra was prompt at letting us know how much materials would cost including the initial quote for the build which was reasonably compared to what we had previously been quoted. We could not ask for a more trustworthy team of builders who cares about what they do and I will not hesitate to hire Arra Brickwork again for any more projects.
Hathor construction Limited
Rating: 4 out of 5
Extension Builder in Thamesmead
With over a decade of hands-on experience in the construction industry, I’ve had the privilege of delivering dozens of diverse projects—ranging from grand-scale developments to personal, intricate builds. Throughout my career, I’ve always been driven by one core belief: construction is not just about brick and mortar, it’s about bringing people’s dreams to life. Having worked across all facets of the industry, I’ve honed my skills in both the practical and the creative, ensuring every project is not only built to last but crafted with precision and care. Founding Hathor Construction Ltd is the culmination of years of passion and hard work, and I’m excited to lead a team that shares my commitment to quality, integrity, and customer satisfaction. At Hathor, we understand that every project is a reflection of the client’s vision. Whether you’re dreaming of a renovation, an extension, or a new build, our mission is to turn that vision into reality, with expert craftsmanship and a customer-first approach. My team and I are here to make your construction experience seamless, enjoyable, and, most importantly, a success. Let’s build something incredible together.
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Gibbons & Sons
Rating: 5 out of 5
Extension Builder in Thamesmead
Gibbons & Sons are a family run business and been trading for 30 years. Our areas of business are extensions, kitchen fits, summer houses, loft conversions & general building.
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Latest review:
Extensions- 24 Jan 2021
We chose Gibbons and Sons for our Loft extension and new bathroom as they was one of the few firms who we contacted and was more then happy for us to view their workmanship during and after the build so we good see the quality of their works. They have been courteous, polite, very patient and accommodating to our chopping and changing of ideas. They helped us to bring our visions to life and offered advice when required without being pushy and driving a hard sale. They have been open and honest with our ideas and their recommendations and in some cases suggested a alternative more cost effective option. All in all we would highly recommend Gibbons and Sons for all types of building works.
Miri zeneli
Rating: 4.9 out of 5
Extension Builder in Thamesmead
With many happy and returning customers over the last 11 years, you can be sure of being well looked after by Miri Construction. My aim is to provide a stress free project, delivered in a manner that I am confident will exceed your expectations. I carry out all work myself and will be your single point of contact. My customers often comment that I am approachable and cheerful. I find that a positive attitude always helps projects run smoothly with good communication throughout.
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Latest review:
Plastering- 17 Jan 2025
Miri was great in completing the project with an excellent finish and a competitive quote. Thank you Miri.
Marco ltd
Rating: 4.6 out of 5
Extension Builder in Thamesmead
we put effort and commitment into our work so that the client is satisfied with our work
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Latest review:
Hard Flooring- 1 Sep 2026
I WANTED TO LEAVE A MINUS REVIEW BUT THERE IS NONE, THAT IS WHY I HAVE LEFT THE LEAST POSSIBLE SCORE. I PERSONALLY DO NOT THINK THIS GUY CALLED MARCO KNOWS ANYTHING ABOUT BUILDING AT ALL. HE IS A ROGUE BUILDER. HE SAID HE HAS 25 YEARS BUILDING EXPERIENCE, WHICH IS A LIE. I CALLED HIM TO DO MY FLOORING, KITCHEN CABINET, TOILET. PAINTING, FIXING LEAKS. HE RUINED THE WHOLE HOUSE. 8 MONTHS ON, WE ARE STILL REDOING ALL THE WORKS HE DID, HE JUST SPLASHED SILICONE ON THE UPVC TO FIX A LEAK. THE LEAK CAME THROUGH THE CEILING UNTO THE FLOOR CAUSING A BIG FLOOD IN THE HOUSE. HE IS THE MOST UNTIDY BUILDER. HE SAID HE WAS PAINTING, HE SPLASHED PAINT ALL OVER THE HOUSE, HE KEPT SAYING HE WILL TIDY IT UP AT THE END. UP TILL NOW, 8 MONTHS AFTER, I AM CLEARING THE MESS. ALL THE GROUT HE PUT ON THE TILES CAME OFF THE FIRST TIME I MOPPED THE KITCHEN FLOOR. ALL THE TILES HAVE MARKED PAIINT ON THEM AND IT IS EXTREMELY DIFFICULT TO REMOVE THEM BECAUSE THERE IS A LOT OF THEM.
Peter renovation
Rating: 3.7 out of 5
Extension Builder in Thamesmead
When you need a reliable builder for refurbish or extend your property our skilled team of experienced craftsmanship are ready to help you. We can provide a tailor-made service to suit your budget and requirements!
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Latest review:
Conversions - General- 6 Oct 2025
Peter and Dan did an excellent job from start to finish. They were professional, reliable, and easy to work with. The quality of their workmanship is top-notch, and they finished everything on time and to a high standard. I’m really pleased with the results and would highly recommend them.
Jai construction Ltd
Rating: 5 out of 5
Extension Builder in Thamesmead
We are the experienced any kind of building work from the long time.
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Latest review:
Excellent work, honest, reliable, friendly and very professional. I would definitely recommend. Already planning to use them and have recommended to my friends group as well.
MGR Construction
Rating: 5 out of 5
Extension Builder in Thamesmead
Hi i have 12 years experience on this sector jobs that we undertake are full house renovation ,loft conversion Extension and Landscape.
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Latest review:
Fencing- 7 Oct 2018
Straight forward, easy to deal with, tidy, even removed an old shed for us. Would definitely use again.
S.k Building & Decorating Services
Rating: 5 out of 5
Extension Builder in Thamesmead
S.K Building & Decorating Services Ltd is a London-based building company specialising in a diverse range of construction services. With a focus on delivering high-quality results, the company excels in Extension building, Property refurbishment, Bathroom installation and Kitchen installation. Renowned for their expertise and commitment to customer satisfaction, S.K Building & Decorating Services Ltd has established itself as a reliable choice for clients seeking professional construction solutions in the London area. Whether it’s expanding living spaces through extensions, revitalising properties with refurbishment, or creating functional and stylish kitchens and bathrooms, S.K Building & Decorating Services Ltd stands out as a reliable partner in the construction and renovation industry. Get in contact now for a free no obligation quote!
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Latest review:
Restoration & Refurbishment- 7 Apr 2025
Senad and his team did a great job. They completed the project quickly and left the flat and common parts clean and tidy. Really happy with their work and would recommend. Hope to use them again.
WORKSHOP & STUDIO - BAKKER LTD
Rating: 4.8 out of 5
Extension Builder in Thamesmead
Sole Trader since 2005, now a Limited Company since 2019. We Design-and-Build projects from Conversions, Extensions and New-build to Retail, Interiors, and Installations, and specialise in Carpentry, Cabinetry, Mobile Objects and Prototypes. We are architects/designers who also make/build, and carpenters/craftsmen who also design. We deal in anything bespoke, non-ordinary, at times with high or special demands. No project is too complicated or too simple. Get in touch for a free Quotation.
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Latest review:
Joinery & Cabinet Making- 1 Dec 2025
Extremely skilled and thoughtful to client
Csj building construction ltd
Rating: 5 out of 5
Extension Builder in Thamesmead
Hi everyone, my name is Festim and I’m happy to help you with my many years of experience in different jobs which house needs. I work for 15 years in Italy and I have been working since 2015 in London. I can do to many different jobs ,brick work, tiles,bathrooms,kitchen,mosaics, Carpenter first and second fixed,doors, skirting, wood flooring. Joinery, wardrobes, bookshelves, kitchen fittings, and more. Free estimates.Thanks
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Latest review:
Tiling- 10 Sep 2025
Excellent craftsmanship and nice guy, jack of all trades. He did all my plumbing tiling and kitchen fitting.. he renovate my kitchen including cabinets, worktop sink tiles and also replace my bath vanity sink, toilet and install new floor and wall tiles. New cupboards, shower screen and many more for very good price.
CMP CARPENTRY & JOINERY
Rating: 5 out of 5
Extension Builder in Thamesmead
All carpentry and joinery undertaken , 16 years experience in the construction industry , from flooring to roofing from loft conversions to whole house renovations , anything that involves wood we specialise in.
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Latest review:
Joinery & Cabinet Making- 6 Aug 2022
Chris did an excellent job of designing and building a high quality radiator cover around our bay window. It was a tight space with lots of wonky walls so not a straightforward job. Chirs asked lots of questions to get the design just right and made good recommendations. I was very impressed with Chris' communication throughout the job and would certainly use again. Thanks again.
Dmytro Dochynets
Rating: 5 out of 5
Extension Builder in Thamesmead
Experienced bricklayer. Skilled in brickwork, garden walls, fences and repair jobs. Reliable, tidy and delivering quality work on time.
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Latest review:
Bricklaying- 30 Oct 2025
Dmytro did fantastic job rebuilding garden wall in our landscaping project. Highly recommended
Thomas Wicks Building Services Ltd
Rating: 5 out of 5
Extension Builder in Thamesmead
We are a growing domestic building company, with 20 years of experience carrying out all aspects of residential building projects. Extensions, Kitchens, Bathrooms and all of the related services such as Plumbing, Tiling, Electrics. We pride ourselves on giving the customer exactly what they want, making the experience of improving their property an enjoyable one.
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Latest review:
Bathroom Fitting- 2 Jan 2018
Tom was brilliant from start to finish. Clean and very personable, we have used him again since and will do in the future.
Civil and Structural Design Solutions Limited
Rating: 5 out of 5
Extension Builder in Thamesmead
CSDS are a structural engineering consultancy company operating in Kent and South East London since 2012 providing sound advice and guidance to thousands of Clients. We specialise in all aspects of structural alterations for domestic properties from chimney stack removals to large extensions and loft conversions. Our aim is to give you guidance from the early stages of your project so you are fully versed on party wall and building control matters and feel supported and assured throughout construction. We aim to be competitive in our quotations and provide comprehensive aftercare through construction with fast responses to site queries, when we know time is at the essence.
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Latest review:
We recently had the pleasure of working with Civil and Structural Design Solutions (CSDS) for a major structural project at my home, and I am beyond impressed with their outstanding service and expertise. From the initial consultation to the final deliverables, the CSDS team demonstrated exceptional professionalism, technical proficiency, and a genuine commitment to excellence. Their attention to detail and thorough understanding of structural engineering principles were evident in every aspect of their work. They provided robust solutions to complex issues, ensuring that our project was not only structurally sound but also cost-effective. The team's ability to communicate engineering concepts in a clear and concise manner was particularly impressive, making the entire process smooth and stress-free. I highly recommend Civil and Structural Design Solutions to anyone in need of a reliable structural engineering service.
ShapeUp Constructions LTD
Rating: 5 out of 5
Extension Builder in Thamesmead
ShapeUp Started in 2015 as a result of two partners` ambitions of creating a construction company that delivers high quality workmanship with a friendly approach towards clients.
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Latest review:
Kitchen Fitting- 11 Apr 2019
ShapeUp did a great job with my kitchen and the tiling. I am very pleased with this. They covered my wooden floors to protect them from damage. They also tidied up after the work. I will definitely be using them again in the future.

4.3

Top rated Extension Builders

Our Extension Builders in Thamesmead, are rated 4.3 out of 5 based on 17 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Thamesmead?

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

Find extension builders in Thamesmead with MyBuilder

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

Step 2: Compare different extension builders in Thamesmead

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

Step 3: Hire Thamesmead extension builders with confidence

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

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

What to ask a Thamesmead extension builder before hiring?

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

An extension builder in Thamesmead 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 Thamesmead 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 Thamesmead?

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 Thamesmead 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 Thamesmead 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 Thamesmead

Can an extension builder in Thamesmead help with planning permission?

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

Many Thamesmead 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 Thamesmead help with materials and finishes?

Yes, most extension builders in Thamesmead 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.