Extension Builders in Dulwich

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (20 reviews)

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Some of our top rated extension builders in Dulwich

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Su Su Construction Limited
Rating: 5 out of 5
Extension Builder in Dulwich
Welcome to Susu Construction: Your Premier London Construction Partner Are you searching for a London construction company that stands out for its excellence, commitment, and innovation? Look no further than Susu Construction, your go-to choice for top-notch construction solutions in the bustling capital of London.
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Latest review:
Groundwork & Foundations- 2 Dec 2022
We are very happy and glad to have found Su Su Construction. It is great to work with such an open minded contractor who is very experienced and diligent. To us architects it is really important to be able to explore alternative means of construction in order to create long lasting, beautiful and healthy environments and with SuSu we are on the right track. Highly recommend.
AK Constructions and Developments Ltd
Rating: 5 out of 5
Extension Builder in Dulwich
We specialise in lofts, extensions, roofing and refurbishments. We provide services all over London and Greater London and within the M25. Our aim is to provide our client with a service that represents a unique way of living, all with a competitive price. As a client of AK Constructions and Developments, you will have the honour of having a job well-done by an experienced and hard-working team who will go above and beyond to ensure that the job fits and goes above our clients' criteria.
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Latest review:
Loft Conversion- 6 Sep 2024
I recently worked with Ardit from AK Constructions and Developments on a double dormer loft conversion, which included creating two large bedrooms, a bathroom, and a utility room. I'm delighted with the results; the quality exceeded my expectations, and everyone who's visited has been impressed. Ardit's approach was professional and not pushy, unlike other builders. He provided references and even invited me to see a current project, which convinced me. Ardit was flexible, suggesting changes like moving the bathroom for better functionality, which turned out great. His team, including Edi and Vini, were polite, courteous, and always willing to help. The work finished ahead of schedule, and Ardit sourced excellent tradespeople, making the experience stress-free. I was so impressed that I also asked him to redo my kitchen, and I'm thrilled with the outcome. I highly recommend AK Constructions and Development.
H&J Properties 02 Ltd
Rating: 5 out of 5
Extension Builder in Dulwich
H&J Properties is your friendly, reliable small team with over 10 years of experience in the building industry. We design, plan, build, and project manage, so you can rely on us for a full round of service. From floor and wall tiling to full kitchen and bathroom installations, we’ve got your home covered. We handle plastering, painting, drylining, insulation, and more with precision and pride. Need a loft, rear or basement extension, a new roof, or concrete work? No problem. Whether it’s bricklaying, basement waterproofing, or installing windows and doors, we bring craftsmanship and care to every job. Big or small, we build it right. Please message us directly for more project images.
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Latest review:
We have contracted H&J Properties for our house refurbishment in London. I was impressed with the team's professionalism and project management from start to finish. We had no plans or planning approved, so we wanted a design and build company who will be able to look after the project from start to finish. They did just that. Working with the architects and the planning application before starting the project planning. As always, there are, of course, unforeseen issues arising with the old houses in london but I could't be happier with the communication received from the team. Thanks for the great job.
Al Costa Construction LTD
Rating: 5 out of 5
Extension Builder in Dulwich
WHO ARE WE? With over 25 YEARS OF EXPERIENCE with AL Costa Construction, you will find the best services provided by professionals that understand and have the knowledge of the process of construction and renovation that best suits your project. It does not matter how big is your project, we work with excellence and dedication to reach perfect results. We try to merge trends with innovating materials and processes in each project, in order to achieve high standards results in every project. OUR TEAM Our team is formed by professionals that are able to perform your project with quality, so your dream project can get out of paper and become a dream come true. Our professionals are always concern with the client’s wishes and try to combine it with them expertise, in order to achieve a final result above expectations, functional and with premium quality. OUR GOAL We try to come up with the best solutions in construction and renovation to provide ours clients an excellent experience. Our main goal is to offer services that match ours clients needs, with an excellent quality.
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Latest review:
Hard Flooring- 11 Dec 2018
Did my 3 bedroom house wooden flooring for full house. Had a wonderful experience with Alex, great job and completed on time with good standards. He gave some good suggestions which improved the quality and neatness of work. highly recommending will work with him again.
A&z
Rating: 4.7 out of 5
Extension Builder in Dulwich
Hi I’m Zan, I have 12 years of experience working as a groundwork engineer. I am offering good discounted prices whilst I establish my business! I offer the following services: -Digging foundations and all general groundwork -Gutter cleaning -Roof damage repair -Demolition -Pipework
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Latest review:
Groundwork & Foundations- 9 May 2026
I found Zan through MyBuilder and was very impressed with his professionalism and attitude from start to finish. He was motivated, clear in his communication, and provided a fair price compared to other quotes I received. Zan and his team carried out work in my back garden, where they levelled the ground to match the house floor level. The job involved removing a significant amount of soil and ensuring proper base preparation, including full waste removal. Everything was done efficiently and to a high standard. It was clear from the outset that Zan is an experienced builder who knows exactly what he is doing. He worked methodically, kept everything tidy, and delivered exactly what was agreed. Overall, I’m very happy with the work and would confidently recommend Zan and his team to friends and family looking for reliable and fairly priced garden or groundwork services.
LEBELLE HERITAGE & RESTORATION LTD
Rating: 5 out of 5
Extension Builder in Dulwich
Lebelle Heritage & Restoration Lebelle Heritage & Restoration is a professional building and construction company specialising in renovations, refurbishments, and heritage restoration. We take on all types of projects, from full property renovations and structural upgrades to detailed interior finishes and the careful restoration of period features. Our team is skilled in both traditional craftsmanship and modern construction methods, allowing us to deliver work that is reliable, high-quality, and built to last. Whether we’re restoring the character of an older property or breathing new life into a modern home, we focus on precision, honesty, and clear communication throughout every stage of the job. We pride ourselves on delivering clean, efficient, and well-executed work that meets the needs of our clients and respects the integrity of each building. At Lebelle Heritage & Restoration, we build, renovate, refurbish, and restore with a commitment to quality and long-term durability.
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Latest review:
After a previous contractor took our money and left our loft extension unfinished, we were devastated and worried about how we would ever get our home back to normal. Then Lewis from Lebelle stepped in and completely turned things around. Lewis was patient, understanding, and incredibly professional. He worked quickly, kept costs under control, and finished the loft extension to a standard we’re so happy with. The stress he took off our shoulders was unbelievable. We honestly can’t thank Lewis enough. If you’re looking for someone trustworthy, skilled, and genuinely caring, Lebelle is the company to call.
Firfield Property Services Ltd
Rating: 5 out of 5
Extension Builder in Dulwich
We specialise in renovations & refurbishments of residential properties in London. Our team arrive on time, are highly professional & polite and leave your home in pristine condition. **Free quotation and advice **All work guaranteed **Fully insured ** References available
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Latest review:
Handyman- 26 Aug 2014
The job went very smoothly and there were no problems. Twana, from Mark's team was punctual, professional and did the job exactly how we wanted it. We will certainly be using them again.
South London Rooms Ltd
Rating: 4.5 out of 5
Extension Builder in Dulwich
We run a team of home Improvement professionals. We carry out all types of home improvement services. We specialise in Loft Conversion and Extentions. We are based in South London area. We aim to provide the best quality work for our customers.
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Latest review:
Extensions- 22 Dec 2022
Imran is a contractor who is personable and is trying hard, but at the end relies on different teams of builders to carry out the work. His knowledge of building work appears at time limited. In our case, this has often led to poor communication/hand-over, extensive delays and often poor (if not careless) craftsmanship. Very stressful. We now have builders (family business) finalising our project.
Ins Projects Limited
Rating: 4.9 out of 5
Extension Builder in Dulwich
Initially, our endeavors focused on smaller-scale projects, encompassing garden wall constructions, minor apartment refurbishments, bathroom renovations, and kitchen installations. This foundational period allowed us to cultivate extensive experience with material suppliers, municipal building inspectorates, and to foster strong client relationships. Building upon this foundation, we have evolved into a construction firm specializing in building extensions, loft conversions, and comprehensive house renovations. Over time, our dedication to meticulous work and exceptional organizational practices has established a distinguished company reputation. Our services encompass the structural construction of new projects, alongside associated electrical and plumbing installations, and all categories of finishing construction and installation works. We manage the entire construction process, from inception to the final handover of keys. We provide a structural guarantee for newly constructed sites, and upon client request, we furnish all requisite certifications. Our pricing is competitive, and we consistently demonstrate a client-centric approach.
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Latest review:
Bricklaying- 27 Jun 2022
Ivan got the job done quickly and efficiently, he done a good job and we have used him for other future projects :)
Levi parrant
Rating: 3.9 out of 5
Extension Builder in Dulwich
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.
Estate Renovation (Al Huda Corporation Ltd)
Rating: 5 out of 5
Extension Builder in Dulwich
Estate Renovation provides substantial building maintenance and development services, which include but are not limited to: kitchen & bathroom renovation, property refurbishment, extension, conversion, paint & decoration, electrical and plumbing services. Our main purpose is to provide your home with safety, comfort and beauty. We are prepared to face any challenges and always strive to achieve continual improvement of our values and standards during projects.
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Latest review:
Bathroom Fitting- 30 May 2022
Mohammed Huda and his builder were professional and quick to attend our job –– recommend! The communication was fast and professional. Mohammed provided a detailed quote (our job had to go through insurance) that is fair and transparent. The builder who came around, Jafa, was very respectful to our things. We were able to trust him from the get-go and had a peace of mind when he was working. He works incredibly hard and is methodical in his process (e.g. painting ceiling first, then walls, so to avoid splatter unevenness). They responded to our requests quickly and fixed things we weren't 100% happy with. The team finished the job ahead of time, and gave us tips for refurbishing in the future. Very happy and highly recommend!
ELB Construction services LTD
Rating: 5 out of 5
Extension Builder in Dulwich
Established, respectable construction company which specialises in all aspects of building. we pride ourselves on giving clients a personal touch. Seeing you’re project through from getting planning permission to completing works to a hi spec finish. new builds loft conversions house extensions refurbishments Basements All type of general building undertaken
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Latest review:
Extensions- 23 Dec 2022
ELB Construction completed some major garden works for me and constructed a garden office. It was a big piece of work with a lot of earth moving, significant foundations and a lot of brickwork. The ELB team, specifically Jimmy the site manager, were fantastic, always giving me the right advice about things I was not knowledgeable about, always focussed on a quality finish and flexible when we had some challenges with our neighbours. The finish is great, communication was always open and honest and they were very competitively priced. My brother in law is in corporate construction and was specifically very impressed with the quality of the brickwork that Jimmy and the team produced. Thank you to the whole team!
O&C General Construction ltd
Rating: 4.2 out of 5
Extension Builder in Dulwich
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.
Rose and Stone Limited
Rating: 5 out of 5
Extension Builder in Dulwich
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.
Teimourazi Bachsoliani
Rating: 5 out of 5
Extension Builder in Dulwich
Hi, my name is Temo. Our team has combined experience of more than 20 years and we have an excellent reputation, for high quality work, tidy finish and friendly service. My team does all types of jobs including extension, loft conversion, full refurbishment. We always deliver best quality job for a reasonable price.
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Latest review:
Conversions - General- 23 Jul 2025
I recently had the pleasure of working with Teimo and his team on a full renovation of a probate house, and I couldn't be happier with the results. The entire house needed a complete overhaul, including two new bathrooms, a kitchen extension, new doors, skirting, walls, plumbing, electrics, as well as front garden paving, a brick wall, and back garden fencing. The quality of the work is outstanding. Teimo and his team take immense pride in everything they do, and it really shows in the final product. They are not only highly skilled but also incredibly polite and tidy, ensuring the worksite remained clean throughout. They worked hard, from 8:30 AM to 5:30 PM every day, and completed the project on time without any issues. What truly stands out about Teimo is his honesty and clear communication. He’s upfront about everything, and you can trust that the price you’re quoted is the price you’ll pay—there are no surprise cost increases along the way I highly recommend Teimo and his team
LMG Building Services Ltd
Rating: 5 out of 5
Extension Builder in Dulwich
We are a family run business offering you a personal touch. Work is always completed to a high standard. We are members of the Federation of Master Builders & Our previous customers will be happy to confirm the level of Service, Quality & attention to detail that we provide as standard.
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Latest review:
Conversions - General- 3 Dec 2021
Would 100% recommend Lee. His professionalism and attention to detail was fantastic. Always available for questions outside of working hours (rare for a builder) and an overall nice guy. I'm definitely keeping his number for any future work I do.

Top rated Extension Builders

Our Extension Builders in Dulwich, are rated 4 out of 5 based on 20 reviews from customers like you.

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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 Dulwich?

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

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

What are the hourly rates of extension builders in Dulwich?

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

Find extension builders in Dulwich with MyBuilder

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

Step 2: Compare different extension builders in Dulwich

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

Step 3: Hire Dulwich extension builders with confidence

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

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

What to ask a Dulwich extension builder before hiring?

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

An extension builder in Dulwich 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 Dulwich 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 Dulwich?

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 Dulwich 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 Dulwich 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 Dulwich

Can an extension builder in Dulwich help with planning permission?

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

Many Dulwich 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 Dulwich help with materials and finishes?

Yes, most extension builders in Dulwich 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.