Extension builders in Thamesmead

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (16 reviews)

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Some of our top rated extension builders in Thamesmead

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A2Z construction
Rating: 5 out of 5
Extension Builder in Thamesmead
I am a very hard working and trustworthy person. I take pride in my work and customer satisfaction is my priority.
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Latest review:
Handyman- 26 Mar 2026
Very quick to attend and provide the quote. Was able to carry out the job successfully the very next morning. I would definitely use again and would recommend to others. Thank you!
Fm building contractors ltd
Rating: 5 out of 5
Extension Builder in Thamesmead
FM Building Contractors Ltd is London based builders HOME EXTENSIONS PROFESSIONAL BUILDING & BRICKWORK SERVICES Providing a range of building services from walls and block paving, extensions and conversions to complete new builds, we only work with highly trusted and experienced tradesmen registered with the appropriate bodies. FM Building Contractors Ltd is proud to have earned a reputation for fast and efficient turnaround, reliability, transparency and professionalism.
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Latest review:
Groundwork & Foundations- 19 Jul 2024
Great job very efficient will consider for further larger projects
GRB Building and Home Improvements
Rating: 5 out of 5
Extension Builder in Thamesmead
At GRB Home Improvements we have over 15 Years experience in general building contracting including extensions, kitchen and bathroom refits, loft conversions, garden landscaping, patios and outbuildings, drainage and groundwork, drives and general building maintenance. We passionately believe in customer satisfaction and strive to ensure that our quality work is delivered on time, as per the agreed schedule, and that we come in on budget.
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Latest review:
Carpentry- 24 Jan 2021
George came to do up our hallway. He laid flooring and installed new spindles and a handrail on our stairs too. He did a wonderful job on the whole lot and we were very happy with him. We were awkward and changed our mind on the first laminate flooring that I had picked out online, he ripped it up and started again with the new flooring we picked and it was no hassle to him. George is a lovely fella, trustworthy and professional. Would highly recommend
LLOCKBUILDING
Rating: 4.9 out of 5
Extension Builder in Thamesmead
"PUTTING THE TRUST AND RELIABILITY BACK INTO BUILDING" At Lock Building London, we specialise in helping you grow your vision by creating the dream home you've always imagined. We understand that your home is a reflection of your aspirations and lifestyle. Our team of skilled craftsmen will turn your ideas into reality, expanding your vision one brick at a time. From innovative designs to quality craftsmanship, we ensure that your home improvement project aligns perfectly with your vision and lifestyle. With our expertise, your dream home will not only meet but exceed your expectations, allowing your vision to flourish and your dreams to come to life
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Latest review:
Restoration & Refurbishment- 28 Jul 2026
Luke delivered exceptional work, completing all tasks on time and to a high standard. His team excelled in painting, decorating, and lighting, and they flawlessly installed new floorboards and skirtings in our flat. Luke was resourceful and adaptable, consistently finding solutions that aligned with our timeline and budget. Highly recommended!
Nicely Done Always
Rating: 5 out of 5
Extension Builder in Thamesmead
Our success is a your happiness. We strive on achieving high standard finishing to achieve high level of customer satisfaction. With us you can’t go wrong. From kitchen and bathroom renovation, to landscaping and gardening work we do it all. So lets get in on and make it happen.
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Latest review:
The guys from NDA have really have executed the works i wanted carried out on another level. The tiling in the bathroom is just lovely. The whole bathroom feels so different i still cannot believe it. Well above my expectations if im honest. Thanks guys. i will definitely be in touch on my next project.
London Premium Builders
Rating: 4.3 out of 5
Extension Builder in Thamesmead
London Premium Builders Ltd Covering London & Essex With 15+ years of experience, our expert team delivers top-quality work across all types of building and renovation projects. ✨ Our Services Include: Kitchens • Bathrooms • Roofing • Flooring • Painting • Extensions • Loft Conversions • Brickwork • Fencing • Driveways • Damp Proofing • Plastering • Tiling • And More! ✅ Free Estimates ✅ All Our Work Is Guaranteed 📍 Based in London & Essex 📞 Contact us today for your free quote!
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Latest review:
Restoration & Refurbishment- 5 Jun 2026
This builder is not honest; he didn't do the work to live up to his verbal commitment to quality. He refused to include the electrical work he had done on the invoice because he did not want to issue an electrical safety certificate. He is not a professional, and we argued 2-3 times about not doing the quality work and left work, giving unethical reasons. His work laying garden slabs was of poor quality; the slabs were moving when walked on. I asked him to do it again, which he said he did, but still he left the slabs moving while walking. I am thinking of legal action against him. I will not recommend him to anyone. PLEASE AVOID HIM GIVING ANY JOB IN YOUR BEST INTEREST.
Designs and Developments
Rating: 5 out of 5
Extension Builder in Thamesmead
At Designs and Developments we have a wide variety of services ranging from bathrooms, kitchens, flooring, decorating loft conversions and extensions.
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Latest review:
Kitchen Fitting- 31 Jul 2019
To say Nick is just a kitchen fitter isn’t doing his work justice, he’s a fantastic project manager and craftsmen as well. When we first met Nick he took 2 hours of his time running through all the options which was when we realised we were actually quite clueless! Although we hadn’t hired him at this point his advice was invaluable. We assumed this would mean Nick’s professionalism would mean he would be very expensive, this was not the case and he was actually a little cheaper than the other parties who quoted. Once Nick started it became apparent that he and his assistant Chow to great pride in their work and worked hard to get the job finished as quickly as possible to the highest standard. They left the site spotless at the end of each day. The result is a fantastic kitchen and flooring which we are extremely happy with. We are already thinking about the next renovation piece in our home and would love to use Nick again. Thanks Nick! Niall & Hannah
VEIG
Rating: 5 out of 5
Extension Builder in Thamesmead
We are a dedicated construction company specialised in delivering quality projects to meet the unique needs of our clients. We pride ourselves on our ability to adapt to the specific requirements of each project. We understand the importance of clear communication and collaboration, which is why we work closely with our clients from project inception through to completion. Regards VEIG
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Latest review:
Conversions - General- 21 Jul 2026
We had a very positive experience working with George and Luigi. The work was completed to a high standard, communication was clear throughout. They were reliable, helpful, and went out of their way to make sure we were happy with the finished job. I look forward working with them again and would happily recommend them to others.
Top Finish Ltd
Rating: 4.6 out of 5
Extension Builder in Thamesmead
We are a property refurbishment specialists with a wealth of experience in house extensions,basements,loft conversions,bathrooms kitchens and much more. We have built a reputation on the basis of providing clients with a quality service that is combined with excellent value for money. .
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Latest review:
Extensions- 16 Dec 2014
These guys were amazing!!! They have done a fanstasic job. There standard of work was extremley high. They turn up on time every day monday to friday and they also offered to work the weekends to speed up the project if needed...... which i did. The price was very competitive and i would definitely use them again always! Get them while you can!
POLISH DECORATING SERVICES LTD
Rating: 4.9 out of 5
Extension Builder in Thamesmead
We are not the cheapest but we are Master Builders experienced in all aspects of building works including bespoke services. Dedicated team of craftsmen always deliver jobs to the highest standards. We provide full certification for any gas or electrical works. City&Guilds- N.V.Q., P.A.S.M.A. and I.P.A.F. Over 15 years of experience in the UK.
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Latest review:
Extensions- 11 May 2018
After a rogue builder left me with 18 (eighteen) structural issues. Lez and his crew came in transformed my failed extension into a masterpiece. All aspects of the job was done to the highest quality and utmost care and attention to detail was shown to building control needs. They cleaned up after every day and made sure the house was habitable, as I had to live there. Every aspect of the build, from the carpentry, plastering and tiling was first class and their recommend electrician and plumbers were from the same stock. Total professionals. My only regret is that I did not use this builder the first time. The prices were reasonable and even building control had good word to say about their work. Thanks Lez
Fast5 Limited
Rating: 5 out of 5
Extension Builder in Thamesmead
Are You Tired of Dealing with Builders? We Have the Solution! ✓ Honest and Transparent Pricing ✓ On-Time Project Completion ✓ One-Stop Shop for All Your Building Needs ✓ Residential and Commercial Construction Expert ✓ Health and Safety Compliant ✓ Regulatory Compliant ✓ Insured Don't let construction headaches ruin your home renovation dreams! Contact us today and experience the difference.
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Latest review:
I recently had the pleasure of working with Fast5 for the refurbishment and renovation of my house in London, and I couldn't be happier with the results. The team displayed a high level of professionalism, expertise, and attention to detail throughout the entire project. From the initial design phase to the physical construction, they demonstrated their commitment to customer satisfaction. The comprehensive range of services offered by them included architecture design, interior design, and physical construction, ensured that every aspect of my home renovation was handled with precision and completed to the highest standards. The team's expertise and experience were evident in their work.
FMbuildersuk
Rating: 5 out of 5
Extension Builder in Thamesmead
We have been in the building trade for over +10 years. We do all aspects of work from interior to exterior work. We have a team that can help you with the work that is needed. We carry our loft conversations, extensions, painting & decorating work and also driveway services. Please find our pictures of work that has been carried out in the last few years to a high standard. We are a team that want to help and complete work to the BEST for our customers.
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Latest review:
The whole team that worked on the refurbishment, which included the electrician, plumber, painter/decorator and plasterer were very professional, hard working and made sure the work was completed on time. i will definitely them again.
brickfields construction
Rating: 5 out of 5
Extension Builder in Thamesmead
Welcome to Brickfields Construction – Your trusted builder based in Essex. At Brickfields we pride ourselves on delivering reliable, high-quality building, renovation and landscaping services you can depend on. We are a highly recommended family run business with over 30 years experience With a reputation built on trust, transparency, and craftsmanship, our team works closely with you to bring your vision to life. Whether it’s home improvements, new builds, extensions, renovations, landscaping or larger projects, we guarantee professional service and results that stand the test of time.
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Latest review:
The best construction company for custom home building. Trust Brickfields. They were really helpful from day one and very easy to work with. They provide reliable construction services at competitive prices. I am highly impressed by their on-time project completion, very impressed with their quality craftsmanship. The entire job went very well, and the team are very courteous and professional, with attention to detail. I loved how the team behaved and listened to all my requirements. They finished the work within the given timeframe without compromising quality. So, anyone looking to have work done, contact Brickfields
JONES CONSTRUCT LIMITED
Rating: 4.9 out of 5
Extension Builder in Thamesmead
Jones construct ltd is a construction company that offers our service to commercial and domestic properties. We take great pride in our projects from start to finish to create that stress free build to our clients making sure we go that extra mile. Covering from small maintenance works to loft conversions .
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Latest review:
Carpentry- 10 Apr 2026
Extremely efficient and professional. Very responsive and fairly priced.
Vasile Balta
Rating: 5 out of 5
Extension Builder in Thamesmead
Thank you for reading this I’m Vas( owner of BALTA COMPLETE CONSTRUCTION LTD)from 16 started as a apprentice in construction industry, have work over the years on big projects also small ones , when I was about 30 years old whit lots of experience in house refurbishment, extensions and lofts , decided to open my business, it was the best idea I take Ower focus as a business is a hight quality service, on all projects(big or small) and the feedback from the profile prof this As a person in charge whit the projects, I’m very easy to talk to, friendly , also more than happy to sort issues out Thank you for reading this As a business ower focus is on quality, high end finishes and trat each coustumer whit respect, and live them happy after the project is finished
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Latest review:
Decking- 30 Sep 2026
Vasile replaced the decking on my front and back roof terraces, and I can't recommend him highly enough. His quote was competitive, and though it was several months before I decided to go ahead, he stuck to it and did an excellent job. He was flexible in working around my time schedules and the weather, and when there was some snagging to resolve at the end, he came over immediately to deal with it. He was also friendly and trustworthy throughout. Wouldn't hesitate for a moment before using him again, and neither should you - top marks.
mds construction
Rating: 5 out of 5
Extension Builder in Thamesmead
An established bricklaying business offering all aspects of bricklaying services in and around London and the south east areas. We are reliable,friendly, professionals that take pride in our work and guarantee jobs to the highest standards.
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Latest review:
Bricklaying- 6 Sep 2021
Mark arrived on time and did an excellent job for us. Cleaned up well, and was very polite and courteous throughout. I would highly recommend Mark to anyone looking for a good builder to complete their project at a very reasonable price. Thanks again Mark.

4.3

Top rated Extension Builders

Our Extension Builders in Thamesmead, are rated 4.3 out of 5 based on 16 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 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.