Extension Builders in Lewisham

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 Lewisham

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Beech construction ltd
No reviews yet
Extension Builder in Lewisham
Beech construction under take all types of construction work.
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Cole and Son decor ltd
Rating: 5 out of 5
Extension Builder in Lewisham
I'm a very honest, reliable and hard working person. I always leave the job I started in very good condition and completed in the allocated time. I always provide the client with the best solutions for the job and keep my costs clear and fair.
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Latest review:
Victor (Vica) laid some engineered oak wood flooring for us in a house that we bought at the end of 2013. The house needed lots of work doing and the new flooring was just one of the many jobs undertaken by Victor and carried out to a very high standard for us. He always paid attention to detail, ensured that the flooring was level and that the new skirting board fitted flush to the floorboards. He was also always able to provide a solution to any problems encountered during the renovation works. I would have no hesitation in recommending Victor as he takes the same pride in his work for others as if he was carrying out work in his own home.
A SHPORAJ CONSTRUCTION
No reviews yet
Extension Builder in Lewisham
Hi there, My name is Saphie and I am a representative of A Shporaj Construction Ltd. We have a wealth of experience in building extensions, loft and basement conversions. Renovation, bathroom and kitchen installations. We work predominately in the south east of London and have a strong diverse team of tradesmen ready to take on all kinds of projects. Meeting the needs of our clients is at the heart of everything we do and we take great pride in meeting specific requirements and delivering a final product to be proud of in each and every project we take on
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3 plastering guys
Rating: 5 out of 5
Extension Builder in Lewisham
London home developers take care and pride in our professionalism. We ensure minimal fuss for our customers and provide them with an end project of their exact want. London home developers are able to complete clients jobs such as Loft and extension, brick work, steel work, partitions, plastering, plumbing, luxury bathroom and much mor.
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Latest review:
Plastering- 12 Jul 2026
Rami did a great job repointing our walls and fixing cracks in our kitchen. Very pleased, quick and processional. Highly recommend. We will definitely use him again.
W8 Build Ltd
Rating: 5 out of 5
Extension Builder in Lewisham
Hi, I’m Jon, the Founder of W8 Build. With over three decades of experience in both modern and listed buildings, I’ve dedicated my career to transforming spaces – from bespoke home extensions and loft conversions to the careful restoration of historic landmarks. I even had the honour of working on Windsor Castle alongside Her Majesty The Queen after the 1992 fire, a project that taught me how to balance grandeur with precision. At W8 Build, we believe exceptional craftsmanship should be accessible. Grounded in values of integrity, reliability, and meticulous attention to detail, my team and I bring the high standards of historic restoration to every project – all at market-competitive rates. Whether you’re seeking a stylish roof terrace, a complex basement conversion, or a heritage-sensitive renovation, you’ll receive a fixed-price, transparent proposal and a commitment to excellence that makes quality affordable. There are no hidden fees or inflated costs here – just clear communication, thoughtful planning, and the peace of mind that comes from working with a team that treats every project, whether a royal landmark or your family home, with equal care and professionalism. Let’s work together to bring your vision to life, blending timeless quality with modern practicality. Your dream space deserves nothing less. W8 Build by Jon Taylor
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Latest review:
Extensions- 14 May 2025
Jon was able to take a failed project from a previous contractor and manage historic building preservation, regulation in Westminster, a lack of parking, plumbing from the Victorian age, and a demanding client to deliver a beautiful result. I love my garden flat extension, it manages to respect the historic nature of a building from the 1840s while also adding amenities to be proud of in 2025. Thank you Jon (and team) and best of luck with future business.
O&C General Construction ltd
Rating: 4.2 out of 5
Extension Builder in Lewisham
O&C General Construction is a construction company that specializes in renovations and general construction. The company has a wide range of experience, from renovations to new construction, and is able to provide a high level of service and quality workmanship. What inspired us to start our own business is adding value to people’s lives, by creating the perfect home for each client, by listening to their needs and create a project that’s perfect for them.
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Latest review:
Restoration & Refurbishment- 19 Apr 2026
Didn’t return to finish the job, respond to calls or messages in response to finishing the job. Sadly wouldn’t hire Ovi & Mihai (O&C) again. Friendly & responsive initially. Worked well, on time, eager to please, did a good job - not perfect but adequate, average attention to detail but corrected when asked. We initially had a faux chimney put in, they touted for more work & provided alcove shelving/cabinet ideas which we subsequently hired them for. They worked intermittently (dad around for first half of job then left for Romania) as this was agreed as best for both parties. However they left the job incomplete once paid (were paid on time, each time, with no bargaining). Didn’t respond to texts or calls, leaving cabinet doors unfinished, large chips & cracks unfilled. Laminate was also poorly cut around hearth stone, left chimney cutout unfinished with no cement to the base. Lack of respect and wouldn’t hire again as cannot trust they won’t disappear. Note previous reviews.
ADJ Builders Limited
Rating: 5 out of 5
Extension Builder in Lewisham
Hello ..my name is Alfred. I, have over 12 years of experience in building site. Perfectionist in my work and ability to guarantee customer satisfaction. Hard working and ensures all deadlines and targets are met. A good eye for detail, precise and accurate at all times and will complete all work to the highest standards.My experience shows in the finish, with no visible streaks. Polite friendly and helpful.
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Latest review:
Painting & Decorating- 6 Oct 2022
Very pleased with our choice. We initially got four quotes from different builders, most of them were terrible at communicating apart from Alfred. He was very easy to work with, responsive and very careful with our brand new house. His team was hard working, tidy and fast. They completely renovated our garden from removal of old decking and gravel to setting up new fences, levelling and turfing the ground. They also removed our old kitchen, partition wall and carpet, as well as did jobs like plastering, building a wall and set up lights and shelves. We’ll surely have him back soon to work on other jobs.
Rose and Stone Limited
Rating: 5 out of 5
Extension Builder in Lewisham
Whether it is an extension or large-scale scheme, we take dignity in taking the client’s vision through to delivering a quality project at the right time and cost. This is made possible by the company being excelled by a Chartered Architect with broad construction experience and a fine eye for detail. A valuable understanding of both traditional and modern techniques along with a firm grasp of materials enables us to provide the client with opportunities to make their concepts a reality.
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Latest review:
New Builds- 7 Jun 2022
Sohail worked closely with me on this project. Providing detailed costings, work schedules and build timelines. Filling my knowledge gaps with his extensive experience he was able to assist over and beyond what I expected from him. Unfortunately due to circumstances out of my control this development project didn’t go ahead. However when the next opportunity for a new build comes up I will definitely be using Rose and Stone. I did have another job going at the time where the other builder badly let me down and left me with a big problem on my hands…. Sohail and his team stepped in and took on the project. The team finished the job exceptionally well, which was a full on top to bottom conversion, some internal reconfigurations and with the addition of a loft and new downstairs WC. The workmanship and overall quality of the job was excellent. My wife is over the moon with the results, taking the house from a three bed one bathroom to a four bed 3 bathroom house. We would definitely recommend Rose and Stone for this type of extensive refurbishment/loft conversion work and look forward to working with them in the future on bigger development projects.
Safe home improvement
No reviews yet
Extension Builder in Lewisham
Safe Home Improvement is a trusted general builder serving Tower Hamlets and surrounding areas. We specialise in home renovations, extensions, kitchens, bathrooms, and all aspects of property improvement. With a focus on safety, quality, and customer satisfaction, we deliver reliable, high-standard results for every project.
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Daniel J Sullivan Contractors
Rating: 5 out of 5
Extension Builder in Lewisham
Daniel is a bricklayer with over 18 years experience with in the building industry. Daniel offers you the public his knowledge and skills and guarantees a quality experienced brick work service for you the public.
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Latest review:
A very large single storey extension. The brickwork is that perfect it looks like part of the original house
J D Building Services
No reviews yet
Extension Builder in Lewisham
I'm a friendly, reliable, general builder, that prides myself on being reasonably priced while also delivering a professional service and finish.
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Tim builds
No reviews yet
Extension Builder in Lewisham
We guarantee you a 100 % quality of the job and we’ll behaviour
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Croham Builders
Rating: 4.7 out of 5
Extension Builder in Lewisham
You can rely on Croham Builders to guide you through every step of your project. We take pride in providing our customers with expert advice throughout all construction phases. And although we think modern, our team is traditionally trained and is dedicated to high-quality workmanship using the latest techniques. houses, bungalows, etc. Office building Structural repairs and extension Building conservatories
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Latest review:
Conversions - General- 23 Nov 2017
Calvin and Jimmy have been absolutely brilliant, and have been the best builders that I have employed. So much so, that I have subsequently asked them to do a whole shopping list of things, from fitting a kitchen to removing an old fireplace. They are always on time, very polite, kind and knowledgeable. Best of all, they get things done quickly without any fuss. Calvin has been invaluable in sourcing items from trade required for the latest project, and clearly talks through requirements of any project. I would very happily recommend them for the excellent value they offer and fantastic level of workmanship.
BLG Development LTD
Rating: 5 out of 5
Extension Builder in Lewisham
flat roof. PRG ROOF. painting. rendering. ceiling. tiling. plumbing. flooring. windows. bathrooms.,Exstenshens,loft
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Latest review:
Extensions- 24 May 2024
We asked BLG to complete a different job to the one we advertised as weren't ready to start it. Instead they completed a 2 bedroom flat renovation, including ripping out and installation of kitchen, removing plasterboard walls, making good, painting and decorating and recarpeting/tiling. Their work and professionalism was great but even better was their attitude. They were always quick to find good solutions to problems, were extremely accomodating, informative, hard working and prices were very reasonable - at no point did I feel I was being ripped off or being treated like a mug, which after completing multiple renovations in the past am well aware of. I wouldn't hesitate to recommend them.
GGS Brickwork
Rating: 5 out of 5
Extension Builder in Lewisham
I have always been a very conscientious worker and enjoy what i do.
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Latest review:
Bricklaying- 17 Aug 2018
Lovely guy-good job, always kept me informed about when he was ģoing to appear, tidy and interesting to talk to!
Sequoia Construction
Rating: 5 out of 5
Extension Builder in Lewisham
Bromley Builder Sequoia construction are an FMB small Award Winning family Builder. Our main work is the construction of Extensions / loft Conversions and associated building works. We have a large portfolio of genuine locally completed projects we are always happy to show clients.
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Latest review:
Loft Conversion- 29 Nov 2017
I had a loft conversion done on my house,I instructed Sequoia Construction to carry out the necessary work they agreed,the whole process with them was first class from start to finish they could not do enough for you.I would definitely recommend them to anyone,the only builder I will ever use is Sequoia Construction because I know them and trust them 100 %.Our architect made so many mistakes but Sequoia Construction delivered their promise they were first class. Gebril Langley. Dartford. 29/11/2017

3.9

Top rated Extension Builders

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

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

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

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

What are the hourly rates of extension builders in Lewisham?

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

Find extension builders in Lewisham with MyBuilder

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

Step 2: Compare different extension builders in Lewisham

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

Step 3: Hire Lewisham extension builders with confidence

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

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

What to ask a Lewisham extension builder before hiring?

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

An extension builder in Lewisham 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 Lewisham 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 Lewisham?

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 Lewisham 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 Lewisham 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 Lewisham

Can an extension builder in Lewisham help with planning permission?

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

Many Lewisham 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 Lewisham help with materials and finishes?

Yes, most extension builders in Lewisham 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.