Extension Builders in Eltham

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (19 reviews)

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Some of our top rated extension builders in Eltham

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Rabbit General Works
No reviews yet
Extension Builder in Eltham
Here at RGW we pride our selves for you the customer. All jobs are undertaken to the highest of standards a standard that we as tradesmen would be happy to have in our own family homes. Not only do we offer the highest of standards but we also offer the most competitive of prices. From full refurbishments,bathrooms,kitchen full garden landscapes and driveways, here really is no job to big or small. Covering all of London and the southeast for the last 10 years we have built up a large portfolio of satisfied customers who never hesitate to get in contact for their las test of projects.
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Dawoo Design Ltd
No reviews yet
Extension Builder in Eltham
From design to built. Domestic or commercial. We make your ideas come true.
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Onyx Interiors London Ltd
No reviews yet
Extension Builder in Eltham
Onyx Interiors London (OIL), is an all-inclusive creative platform dedicated to private clients, property investors and developers, who require a specialized or ongoing service designed to their specific needs.
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A1 plastering and building services
No reviews yet
Extension Builder in Eltham
Hi im darren, I have over 25+ years of experience of all plastering and construction work. I can do all types of plastering internal and external as well as offer many more services in the construction field. I work all round Essex but starting to expand out further. I'm reliable, trustworthy, hardworking, clean and tidy.
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SOLI CONSTRUCTIONS
No reviews yet
Extension Builder in Eltham
As a Construction & Consultancy Firm with over 24 years of work experience in building industry, We offer a wide range of services to our clients including: -All Types of Extensions -Loft Conversions -Flat Conversions -New Builds -Tanking and Damp-proofing -Wall and Chimney Removals -Steel Beam/Frame Installations -Structural Repair and Retrofitting -Renovation and Refurbishment -Planning Application Drawings and Submissions -Structural Calculations -Building Specifications Documents
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Simply Extensions & Lofts Ltd
No reviews yet
Extension Builder in Eltham
We're specialists in house extensions, refurbishments, and Loft conversions in South West London with the aim to deliver. Everyone that we use for finishing, is a trade. This gives you a very high-quality finish that is seldom achieved by a 'General-trade'. They are fast, clean, and produce showroom quality. These individual professionals are more than just people we work with, they are people we know.
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dmbuilding
No reviews yet
Extension Builder in Eltham
single bricklayer with 18years experiance in the game! very neat and tidy! professional and clean!
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NKN HOME CREATIONS LIMITED
Rating: 5 out of 5
Extension Builder in Eltham
We are a reliable and experienced construction company committed to delivering high-quality workmanship with care and attention to detail. We specialize in home extensions, refurbishments, new builds, and loft conversions, ensuring every project is completed safely, professionally, and to the highest standards.
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Latest review:
Plastering- 2 Feb 2026
Happy with work, left job site tidy and clean. Will be happy to use company for future work. Thanks
Leon building contractors limited
Rating: 5 out of 5
Extension Builder in Eltham
Hi.Welcome to our profile. We are well established building company working in London and surrounding areas. We are specialists in loft conversion and extension. All kind of building works undertaken.also happy to provide photographs and references of our previous happy customers.We offer free quotes.Fully insured,skilled trades men. Finish projects on time limit to suits you. We are proud member of Association of Master Tradesmen and check a trade. thanks for visiting our page.
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Latest review:
Extensions- 25 Apr 2025
we recently had the pleasure of working with Leon building contractors limited, and i cant recommend them highly enough! They carried out a single story rear extension, an internal garage conversion and porch to the front of the house. On top of that they installed our new kitchen and toilet suite downstairs all finished to a high standard. From start to finish Vic and his team were amazing nothing was too much trouble and were always happy to do anything without a fuss. Their attention to detail was first class. It wasn't only us who was impressed but our neighbors commented how friendly, respectful and hard working they all were and have already asked for his contact details. Vic trade contacts also helped us with windows/bi-folds and quartz worktops all high quality at much cheaper prices i could find myself! Thanks again to Vic and the team for doing such a brilliant job, we have no hesitation to use again in the future!
FFernandesConstruction
No reviews yet
Extension Builder in Eltham
Fernandes Constructions Hi, we have been in this trade 10 years We specialise in: painting and decorating wood flooring full bathrooms, full kitchens, electrical & plumbing house extensions Conservatory
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G&B Welding
No reviews yet
Extension Builder in Eltham
Welder Fabrication steel work for extension house,building garage workshop…!
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H & F London Limited
No reviews yet
Extension Builder in Eltham
H & F London is a specialist construction company based in Hertfordshire & West London. We’re known for providing groundwork solutions & new builds for a variety of clients across London and Hertfordshire.
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Ava Constructions & Decors
Rating: 4.9 out of 5
Extension Builder in Eltham
Ava Constructions & Decors Ltd is a UK-based construction and renovation company committed to delivering top-quality craftsmanship and reliable project management. We specialise in full refurbishments, extensions, bathroom and kitchen installations, and commercial fit-outs — always tailored to the client’s vision and delivered to the highest UK building standards. With a keen focus on transparency, timelines, and customer satisfaction, Ava Constructions has earned the trust of homeowners, investors, and developers alike. Punctuality and completion of work on time are a priority .Our team always respect the client wishes and work with them to achieve the best possible results to their satisfaction. Thank you in advance
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Latest review:
Extensions- 16 Apr 2026
I would not recommend this builder based on my experience. Instead of using crushed concrete they used soil to fill the house flooring for underfloor heating. 1 The project suffered from poor communication, repeated delays, and a lack of clarity around responsibilities. There were serious issues with the foundation works, which failed Building Control inspection and now require remedial engineering input before works can proceed. The site was also left incomplete and not in an acceptable condition. Despite substantial payments being made, key documentation, technical responses, and follow-through were lacking, leaving me to resolve major compliance and structural issues independently. My experience has resulted in delay, additional cost, and considerable stress. I would strongly advise others to ensure there is a detailed written contract, clear scope of works, and defined accountability
Shergill Heating & Gas Services
No reviews yet
Extension Builder in Eltham
Over 20 years experience in all Building works, from developing New Build Flats, and Homes, down to all refurbishments and small renovation works. We can handle the job no matter how big or small it is, with our skilled and knowledgable team who have experience in all types of building, plumbing, electrical and carpentry work, we have you covered!
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Colwin construction services limited
No reviews yet
Extension Builder in Eltham
Domestic Builders. All building work undertaken. We have all trades in your forever growing team for your every need.
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South Essex building solutions ltd
Rating: 5 out of 5
Extension Builder in Eltham
Here at south Essex building solutions we aim to help with you’re requirements we are a family run company and we take pride in our work , we can help you with anything from fixing a sink to building you’re dream home Extensions Brick laying Carpentry Landscaping Bathrooms Kitchens Maintenance We are certified by fmb Over 30 years experience combined with father and son
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Latest review:
Extensions- 27 Apr 2026
We chose Kieran and South Essex Building Solutions because he came up with the best solution to fix my crumbling porch wall. He gave a time line that he stuck to, made a very professional job and there were no hidden cost at the end of the job. I am very pleased with my choice of builder and the work he completed. If I have further work to do, I will be using Kieran and I would gladly recommend him and his skills.

3.9

Top rated Extension Builders

Our Extension Builders in Eltham, are rated 3.9 out of 5 based on 19 reviews from customers like you.

Quality screening

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

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

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

What are the hourly rates of extension builders in Eltham?

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

Find extension builders in Eltham with MyBuilder

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

Step 2: Compare different extension builders in Eltham

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

Step 3: Hire Eltham extension builders with confidence

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

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

What to ask a Eltham extension builder before hiring?

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

An extension builder in Eltham 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 Eltham 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 Eltham?

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 Eltham 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 Eltham 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 Eltham

Can an extension builder in Eltham help with planning permission?

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

Many Eltham 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 Eltham help with materials and finishes?

Yes, most extension builders in Eltham 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.