Extension Builders in New Eltham

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

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Some of our top rated extension builders in New Eltham

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Find My Project LTD
Rating: 5 out of 5
Extension Builder in New Eltham
We are Find My Project – your dynamic turnkey build and construction experts. Specializing in commercial and residential refurbishments, new build developments, extensions, loft conversions, interior designs, and project management, we turn your ideas into reality. Excellence is non-negotiable, and quality is our trademark. We're not just builders; we're creators committed to crafting spaces that stand the test of time. With your trust, let's build something extraordinary together!
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Latest review:
They team did an outstanding job. The new extension has added more space to our home and made living extremely comfortable. The price i was quoted was better than other companies and the workmanship made it value for money. I am happy to recommend them to my friend, families one looking to complete similar project. Thank you all for the wonderful job you've done!
FERARU GROUP BUILDERS LTD
Rating: 4.7 out of 5
Extension Builder in New Eltham
I've worked in the UK for 8years now and I do my job to a high standard.
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Latest review:
Extensions- 15 Jun 2024
My advice is avoid. Poor communication Poor workmanship Poor quality finish Create 'issues' during build to make you pay more than quoted Left project incomplete We pursued through the Court and won the case, but of course he is unable to pay, so we are pursing further through the Court. He will respond to the review with some excuse, but there is absoultley no excuse for poor workmanship and quality. Happy to share pictures and videos on request.
MK1
Rating: 5 out of 5
Extension Builder in New Eltham
We are a are a small quality builders based in sidcup.We pride ourselves with being conscientious and reliable. Over the last 25 years i have built up a team of quality tradesmen to complement my own skills to provide a complete refurbishment service . All work is guaranteed
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Latest review:
Used Mark and his team for a number of jobs in our home. These included garage conversion, internal wall removal as well as re-formating hallway space. Job completed to a high standard ahead of schedule. Excellent communication throughout and work done at a competitive rate. Have recommended to friends and family and would certainly use again for future projects.
CTU Interiors Ltd
Rating: 5 out of 5
Extension Builder in New Eltham
I have over 15 years experience working on the tools. I started building work with my Dad when I was still in school and joined him professionally when I was 19, I am now 37. I started on suspended ceilings and plaster boarding walls and ceilings. Then I moved into more residential works doing extensions and refurbishments. I have a good team of guys around me that between us we can get any job done for you. Customer satisfaction is very important because you are as good as your last job!
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Latest review:
Plastering- 9 May 2016
Managed to fit me in at short notice and the plasterer did a thoroughly professional job and was pleasant with it.
Montrose builders limited
Rating: 5 out of 5
Extension Builder in New Eltham
Montrose builders is family run having been established by 2 brothers Neil & Nick. Are expertise and knowledge makes us the first choice in providing building services for both homeowners and commercial enterprises. most of our work comes through recommendations providing an honest testament of the service we provide. our company is run on the cornerstones of being family run, providing quality work for the fairest price, with a company ethos of being approachable, friendly and honest.
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Latest review:
Waste Clearance- 17 Jun 2024
Excellent service, quick responses to messages and queries. Work carried out to a high standard, I wouldn’t hesitate to recommend or use them again.
Dry lining and plastering.rendering
Rating: 3 out of 5
Extension Builder in New Eltham
I have been doing this job more than 8 years for ather company And now i start working for my self nearly 2 years I guarantee 100% good job
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Latest review:
Plastering- 26 Jun 2025
Ben did a great palstering job at a very competitive price. It was very easy to deal with him. I have given him more jobs and will use him again
Levi parrant
Rating: 3.9 out of 5
Extension Builder in New Eltham
LP JOINERY Established in 2019, Undertaking all types of domestic work from carpentry to bricklaying to plumbing.
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Latest review:
Carpentry- 13 Apr 2026
Levi replaced 2 doors and also fixed my store room door. Did the job at very reasonable cost. Very polite, professional and also left the house clean. Will hire again for other work. Highly recommended.
Golden Constructions
Rating: 5 out of 5
Extension Builder in New Eltham
All construction jobs. Free estimates. Established construction company specializing in residential, commercial, and industrial projects.Expertise in all aspects of construction, from foundation to finishing touches. Skilled team of professionals committed to quality, safety, and efficiency.
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Latest review:
Painting & Decorating- 2 Mar 2026
Gojart was very professional from the start, great communication and great quote, we are very pleased with the work that he carried out in our bathroom. Explained everything that he was going to do, and gave advice too. Very tidy. Would definitely recommend.
SBL
Rating: 5 out of 5
Extension Builder in New Eltham
We are a family run business with over 40 years experience in this industry. We do all aspects of Landscape gardening. We take great pride in customer satisfaction and work with you to achieve your perfect garden.
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Latest review:
Landscaping- 14 May 2026
So happy with our revamped back garden and so impressed with Peter, George and Tommy, who worked so hard through some pretty dodgy weather. Peters quote was very competitive and made a mockery of some extortionate quotes I was given. He and his team were able to start the job promptly. They removed old turf and slabs, extended an old patio and built a new one. The job was completed by returfing the remaining grass area. They completed the work quickly and produced a quality end product. Peter was very flexible and dealt with us changing our minds 3 or 4 times in a very calm manner. They worked incredibly hard but made sure that they left everywhere clean and tidy each day. We thoroughly recommend their work and wouldn't hesitate to use them again
Delta Alpha Building Services
Rating: 5 out of 5
Extension Builder in New Eltham
Delta Alpha Building Services is a family run business with 35 years experience in domestic construction services. We undertake works from smaller jobs (eg. Door hanging) to large construction works (eg. Extensions and conversions).. All our tradesmen are fully qualified and insured. Free phone consultations and estimates, prompt reply and service. We treat your home as if it were our own.
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Latest review:
April 2025 Delta Alpha built a raised decking to the back of my garden. We were very happy with the work and would definitely use this company in the future.
Maynard Builders
Rating: 5 out of 5
Extension Builder in New Eltham
Hi I am A General Builder from Bexleyheath with specialist expertise in Plastering / Rendering and Carpentry. However I undertake all aspects of building from underpinning to Roofing. I do not however do Plumbing or Electrics but use reliable professionals in these fields as and when required.
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Latest review:
Extensions- 8 Apr 2023
I cannot thank Lee, Iain and Karl enough for their work on my mothers house which was left in an atrocious way from a cowboy builder who did an extension for her. These guys from the start to finish were wonderful. They helped us through a very difficult situation and completed the work required to a fantastic standard including a very complex roof re-structuring, including even replacing the main ridge beam and even getting in a steel beam, that should have been in place from day 1 of the build, after everything was completed without any problems. Got everything up to regs for us and worked through undoing basically a terrible and challenging build to get it right and safe without any issues or inconvenience to us. Always polite, cheerful, finding solutions, making sure we were all happy with every stage, honest, reliable, completed work in deadlines they set and communication was excellent. Very reasonable on prices and honest guys. I will not hesitate to use them again and I wish we had found them in the first place! Highly recommend, you are in safe hands with Maynard builders! It’s hard clearly to find trustworthy building companies but these guys are amazing and value their customers to the very end. Thank you so much Lee, Iain, Karl, Jamie and the whole team. All the best!
Jhoan
Rating: 4.5 out of 5
Extension Builder in New Eltham
6-7 years experiences. I’ve got experiences in:plastering,tilles,plasterboard,painting,brickwork,paving,flooring etc at low price... I’m doing good job working hard and low price
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Latest review:
Extensions- 11 Apr 2022
ionut danciu did a very good job of building the concrete base and summer house. It was not the easiest of tasks as he had to carry all the sand and concrete through the house but did it happily. Would definitely recommend for any building work.
APJ Home Renovation Ltd
Rating: 4.8 out of 5
Extension Builder in New Eltham
Hi my name is Arturs, I have 20 years of experience in: painting & decorating, wallpapering, plastering, drylining, tiling , Italian polished plaster, electric, plumbing, roofing, carpententery, bricklaying, landscaping and etc. Moderate prices, exceptional quality! Kind Regards
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Latest review:
Tiling- 7 Mar 2025
Thanks again Arturs, really happy with the work you’ve done. Arturs is a nice and friendly guy and arrived promptly and completed the job within the time frame agreed. Very professional, tidy and good work and quote provided. Would highly recommend.
Spoonerbrothers London
Rating: 5 out of 5
Extension Builder in New Eltham
Spooner Brothers London has 20 years of building experience We have a good reputation for customer service, many of our leads are recommendation, with competitive prices & a high standard of workmanship. We specialise in orangeries, conservatories, porches, Skypods, windows, doors & bi-folds ! We are Certass fenestration registered, so all work comes with a building compliant certificate and an insurance backed guarantee See our brochures on the Spooner brothers london website
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Latest review:
Windows & Doors (uPVC & Metal)- 29 Jan 2024
John did a fantastic job of replacing a large sash window in our kitchen. He was easy to work with, and was very clean and tidy with the job. On top of that the price was very fair, particularly for the calibre of work completed. Would recommend!!
Akili_handyman
Rating: 5 out of 5
Extension Builder in New Eltham
Hi, I’m Akili — a friendly, reliable tradesman with over 8 years’ experience. I take pride in high-quality work at fair prices, and I guarantee all my jobs. Skilled in plastering, tiling, decorating, roofing, and full refurbishments — no job too small or big. Quality, honesty, and respect in every project. 👍
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Latest review:
Restoration & Refurbishment- 14 May 2026
Akili and his team did a fantastic job in renovating our house. He carried the jobs out within the timescale and in budget. He is skilled at his job and nothing phased him. Hard working and left the property tidy. I would highly recommend.
Step-Up Contractors
Rating: 5 out of 5
Extension Builder in New Eltham
Step Up Contractors Ltd with over 20 years of construction experience. We are a family owned business and have been responsible for successfully completing a variety of construction projects covering a wide spectrum of expertee uses. Completed on time, to satisfaction, on budget. We take care of all your construction needs, from design, to handing over keys to your new home. No job too small, from a leaking tap, bathroom install to a double story extension. Free no obligation quotes!
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Latest review:
Bathroom Fitting- 14 Aug 2021
I would definitely recommend Step-Up Contractors - they have done a really fantastic and great quality job of refurbishing our bathroom and ensuite shower room. They were very professional, friendly and communicated really well with us throughout the whole process. They tidied up every evening before they left and were very considerate. They did such a good job that we have asked them to come back soon to complete kitchen flooring work for us!

Top rated Extension Builders

Our Extension Builders in New Eltham, 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 New 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 New 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 New Eltham who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in New Eltham?

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

Find extension builders in New Eltham with MyBuilder

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

Step 2: Compare different extension builders in New Eltham

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

Step 3: Hire New Eltham extension builders with confidence

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

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

What to ask a New Eltham extension builder before hiring?

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

An extension builder in New 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 New 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 New 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 New 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 New 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 New Eltham

Can an extension builder in New Eltham help with planning permission?

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

Many New 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 New Eltham help with materials and finishes?

Yes, most extension builders in New 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.