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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Martin Construction
Sponsored
Rating: 4.4 out of 5
Extension Builder in New Eltham
I'm a reliable and hardworking builder specialising in home extension , renovation, roofing, external insulation, and general property improvements. I provide a friendly service, clear communication and high-quality workmanship from start to finish.
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Latest review:
Hi I recommend the Martin construction hi is really professional , hi save me lots money and done job height quality hi completed done job and cleaning the all sides hi is top builder.
ASAR PLUMBING AND BUILDING
Rating: 5 out of 5
Extension Builder in New Eltham
I am a qualified plumbing heating engineer and General builder, i have learned my trade working for a plumbing / building company for 15 years. i have also been Nescot College for four years where i gained my qualification. I am hard working person, honest, trustworthy and take pride of my job. Customer satisfaction is my top priority.
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Latest review:
Extensions- 17 Mar 2024
Agim and his team were great - communicated what they would do at each stage, the timing, materials needed etc., no major surprises. The building is quite old and wonky in places so they had to work with that and the finished result looks great. Very happy and have would recommend Agim again!
Ernest Sergy Building Services Ltd
Rating: 5 out of 5
Extension Builder in New Eltham
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.
I. N.S CONSTRUCTION & LANDSCAPE LTD
Rating: 5 out of 5
Extension Builder in New Eltham
We beat all the quotes!
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Latest review:
Extensions- 22 Dec 2025
Good honest communications, good work progress and easy to get on with. Mutual respect shown both sides.
Bricklayer
Rating: 5 out of 5
Extension Builder in New Eltham
Small bricklayers gang ready for work : Face brickwork,Block work,Garden wall's any design you like. Pointing weather struck,flash. Old stock brickwork,New build brick work, Extensions.
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Latest review:
Extensions- 1 May 2024
Vaidas and team were great. Got here early and worked solid until late. Built a 5x4m extension and done a great job. Looks good and has been approved by building control. Highly recommend.
Gibbons & Sons
Rating: 5 out of 5
Extension Builder in New Eltham
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.
Hennow Construction
Rating: 5 out of 5
Extension Builder in New Eltham
Hi, we are a small father son business with over 30 years of building experience. As both father and son are bricklayers we tend to take on jobs such as: extensions brick and block work; out buildings; garage conversions; garden walls; patios and drive ways. Formerly Owens Construction, we have now merged with close family friends to expand the brand and become Hennow Construction.
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Latest review:
Bricklaying- 24 Apr 2019
Jake and Harry did an amazing job with our front wall and fence in the rear garden. We got three quotes for the job and they were the cheapest but also came across professionally. It wasn't a straight forward job, it was was using reclaimed materials that were varying size and shapes. I was also quite particular on the look, I wanted the brickwork to match our house, they took care to match the pointing and bricks but offered advice on how we could save money whist still getting the look we wanted. They arrived everyday on time, they were reliable, honest and extremely hardworking. They also kept us in the loop throughout the work making sure we were going to be happy with the end result. I have already recommended them to friends and will use them again for our next project. Thumbs up from us!
Seymour Building Services Limited
Rating: 5 out of 5
Extension Builder in New Eltham
Seymour Building Services would look after your complete project. We would organise all our tradesmen so the right trades are there at the right time. This leaves you with no headaches. Just one number to call for our friendly help and advice.
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Latest review:
Kenny and team did a brilliant job replacing my old lean-to porch area for a new smart extension with windows, door and even a cat flap. They were on time, organised, efficient and took away all the old materials and rubbish. Kenny was helpful when he visited and prompt in replying to all communications and supplying quotes and invoices. I am very happy with their work and wouldn't hesitate to recommend their services.
OGC LANDSCAPING LTD
Rating: 5 out of 5
Extension Builder in New Eltham
Welcome to OGC Landscaping, I'm based in South East London/ Kent and have experience in landscaping and general handyman work, I pride myself on my work and always strive to deliver the best customer service, I treat your home as if it was my own and I am honest, friendly and very reliable, please take the time to have a look at my work and the finished job can really transform your home or garden. I provide free estimates and helpful friendly advice. Here are some of the services I offer and look forward to hearing from you. Services Indoor/Outdoor Landscaping and groundworks Turfing Brickwork Shed bases Decking Hard landscaping Garden design Summer house design & construction Garden sheds Sleepers Flower beds Tree planting Soft landscaping I'm happy to offer a flexible service at a time that suits you, please don't hesitate to get in touch. If for any reason you are unable to contact me send me a text and ill get back to you as soon as possible. Many thanks Oliver
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Latest review:
Landscaping- 5 Oct 2025
Amazing work and communication
Mayle Brickwork
Rating: 5 out of 5
Extension Builder in New Eltham
I’m Charlie, a bricklayer with 7 years of experience in the construction industry. Over the years, I’ve gained a deep understanding of my craft, from laying solid foundations to creating intricate brickwork. I take pride in delivering high-quality results with precision and hard work. This year, I’ve decided to take the next step and start my own business. I’m excited to bring my experience and dedication to new projects, offering good quality bricklaying services
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Lucian Morosanu
Rating: 4.9 out of 5
Extension Builder in New Eltham
We are two professional experienced builders: Lucian Morosanu and Laurentiu Turcu. We are offering a range of services such as extensions, renovations, new builds and all hard and soft landscaping including free quotations. With more than 10 years of practical knowledge and many excellent references and recommendations from satisfied costumers.
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Latest review:
Extensions- 8 Oct 2018
FANTASTIC service, will definitely use Lucian and his team again. They were quick to respond, quoted straight away, could start quickly and did a fantastic job. We totally trusted the team, they were respectful with our house and after discussing the final snag list with us they left everything immaculate. We have many other refurbishment jobs to do to our house and will use this team again. Hard-working, polite, super responsive and they have left a really quality finish. We are delighted. Would highly recommend! Thank you Lucian and team!
Lows Design and Build Ltd
Rating: 5 out of 5
Extension Builder in New Eltham
Hi, We are a family-run design and build Company based in Bromley. We undertake many aspects of building work with a focus on loft conversions, house extensions and refurbishments. We can offer clients architectural and engineering drawings alongside high quality 3D visuals of the proposed works. Please get in touch for a free estimate. Samuel, James and Patrick Low
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Latest review:
Loft Conversion- 3 Nov 2021
Excellent work, very reliable and good quality
KDM Plumbing & Heating Ltd
Rating: 4.9 out of 5
Extension Builder in New Eltham
Welcome, Qualified, reliable and experienced tradesman. Fully insured and able to help with all your building needs. Specialized in full plumbing Installations and bathroom fitting, yet able to complete all jobs taken to a highest standard.
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Latest review:
Plumbing- 8 Dec 2022
Came when he said. Fitted the shower pump very quickly. Receipts for materials used. Good price. Tidy worker. Nice bloke. What more do you need? Will call next time I need any work doing.
EAA il projects Ltd
Rating: 5 out of 5
Extension Builder in New Eltham
Expert Builders in South East London – Specialists in All Trades Looking for reliable, high-quality construction services in South East London? We are expert builders specializing in all aspects of construction, from groundwork to roofing and everything in between. With years of experience, we deliver top-tier craftsmanship across residential and commercial projects, whether it’s a full-scale renovation, a bespoke extension, or a complete new build. Our skilled team covers all trades, including: ✔ Brickwork & Structural Work ✔ Carpentry & Joinery ✔ Plumbing & Electrical Installations ✔ Plastering & Rendering ✔ Roofing & Loft Conversions ✔ Kitchens, Bathrooms & Tiling ✔ Painting, Decorating & Finishing Touches We take pride in our attention to detail, excellent customer service, and commitment to delivering projects on time and within budget. Whether you need a small home improvement or a large-scale development, we bring expertise, reliability, and a high-quality finish to every job. Contact us today for a free consultation and let’s bring your vision to life!
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Latest review:
Michaels team fully renovated my kitchen, from installing underfloor heating, tiling the floor, electrics, fitting new cabinets, integrating kitchen appliances and everything between. Impressed with their work, I also asked them to build a bespoke shelving unit with hidden storage to my living room. Additionally, they sanded my old pinewood floor and stairs. Their communication was great throughout the project. Everything was completed on time, to a high standard and without any hidden costs. I would hire them again without hesitation.
Csj building construction ltd
Rating: 5 out of 5
Extension Builder in New Eltham
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.
Building life uk limited
Rating: 4.8 out of 5
Extension Builder in New Eltham
My skills are :Tiling :brickwork :extensions :loft conversions :partition : painting :carpentry E.t.c :you name it we do it I've got a team together who are hard working men who are very motivated on working together with our clients we always keep everyone who we do work for happy and still get recommended I work references that I can provide (We haven’t been online at my builder over a year now but we have been working out from my builder we got lots of work to prove)
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Latest review:
Bathroom Fitting- 9 Oct 2018
Ozay arrived on time and finish the job to a high standard I've used the shower for over a month now and no leaks! Would use again!
MGR Construction
Rating: 5 out of 5
Extension Builder in New Eltham
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.

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.