Extension Builders in Dulwich

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (18 reviews)

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Some of our top rated extension builders in Dulwich

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Nice Design & Build
Rating: 5 out of 5
Extension Builder in Dulwich
Quality general builder
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Latest review:
Decking- 16 Apr 2022
Adam is firstly a really lovely guy and we felt comfortable with him from the moment he came and did a very thorough assessment of the job. His work was very neat and clean. The job was done perfectly and we will definitely be using his services for other work on the flat.
Beds4All
Rating: 5 out of 5
Extension Builder in Dulwich
We are a professional construction team with hands-on experience in building homes, extensions, renovations, and structural work. Whether it's laying a foundation, brickwork, roofing, or complete builds — we do the job right, on time, and with pride. ✅ Quality workmanship ✅ Reliable team ✅ Clean, safe, and efficient job sites ✅ Client satisfaction is our priority Services Offered: New Builds Home Extensions Renovations & Refits Brickwork & Blockwork Roofing Driveways & Patios
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Latest review:
Handyman- 17 Sep 2025
Very happy with recent job, would recommend.
Joy Design & Build LTD
Rating: 5 out of 5
Extension Builder in Dulwich
Joy Design & Build – Where every project is a promise of exceptional quality, unwavering integrity, and cutting-edge innovation. We specialize in transforming your vision into vibrant, functional spaces that truly reflect your needs and style. Whether you're dreaming of a bespoke home that captures your unique personality, a commercial space designed to inspire productivity and creativity, or a thoughtful renovation that breathes new life into your property, we are here to turn those dreams into reality. At Joy Design & Build, we take pride in our meticulous attention to detail, our commitment to sustainable practices, and our collaborative approach with every client. From initial concept to final construction, we ensure that each project not only meets but exceeds your expectations. Your vision deserves more than just a construction project—it deserves an experience that’s seamless, stress-free, and tailored to your goals. Let’s build something extraordinary together.
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Latest review:
The works was clean , neat and well organised
AJT Construction Beckenham Ltd
Rating: 5 out of 5
Extension Builder in Dulwich
AJT CONSTRUCTION WE BUILD WHAT WE LOVE, AND WE LOVE WHAT WE DO With today’s uncertain economy choosing the right builder for your project has never been more important.From conception to final build and completion it is vital to work with a company that understands your needsand has expertise to deliver on time and within budget. For over 30 years, we have built an enviable reputation in Beckenham and the surrounding areas, successfullymanaging projects in the construction industry
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Latest review:
Extensions- 23 Mar 2022
Dealing with Jason was an absolute delight. He was punctal, provided some great advice and introduced me to a great conservatory manufacturer. Would definitely use him again for further building work. Highly recommend.
DTS Builders Ltd
Rating: 5 out of 5
Extension Builder in Dulwich
All aspects of brick and block and stone work, new builds, extensions garden walls. Patios brick repairs, pointing. & refurbishments 20 years experience.
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Latest review:
Bricklaying- 28 Apr 2019
Dritan and his team we professional and completed a job well done. From the beginning Dritan was easy to work with , very friendly and approachable team. Dritan was extremely helpful in making a few suggestions to improve the wall and prevent future damage. I’m very pleased with the finished works. I would highly recommend Dritan and dts builders. Well done guys was great to work with you.
LivingFunky Ltd
Rating: 5 out of 5
Extension Builder in Dulwich
LivingFunky is a Building Refurbishment and Property Development Company based in London. Our Managing Partner Mr Lindsay Gibbons has worked in the building industry for more than 20 years, managing and working on projects for individual homeowners through to multimillion pound commercial projects. As a Funky Quality Building Company we work with our clients every step of the way transforming and creating funky stylish homes that leave our clients feeling delighted and amazed.
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Latest review:
Plastering- 14 Feb 2017
Their price was competitive, work was of a good standard and they tidied up afterwards. Would use them again.
Cornel Construction Services
Rating: 5 out of 5
Extension Builder in Dulwich
Hi there, my name is Cornel,I am a self employed general builder based in Bromley. I have a professional team able to cover all aspect of building. I pride myself in delivering the best standard of both build and customer service and I will work with you from start to finish to make sure you achieve the very best outcome. References are available from my many satisfied customers.
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Latest review:
Extensions- 16 Nov 2019
I was very lucky to find Cornel for my building work. His team were extremely hard working, efficient and respectful and the work was done very quickly and to a high standard. Most estimates for the build time were between 8 and 10 weeks - my work was fully complete in 6 weeks. Building control passed all stages of the work without any issues. He is equally proficient at the plumbing, electrics, flooring, tiling and decorating as the heavy building work, even restoring my garden so that it looked better than it did before the build. I am in a conservation area with close neighbours on all sides and Cornel minimised the disruption as much as possible and made efforts to keep everyone happy. His attitude to overcome problems and make sure that in the end you are a happy client drives his approach to the work. I had 10 builders quote for the job and Cornels quote was very competitive and the final costs were exactly as we had agreed. I had spoken to a number of his previous clients before going ahead and they were all very impressed with his work and had good experiences. It can be a difficult decision to choose a builder if you have no previous experience and given the potential for things to go wrong - but we made the right choice. I wouldn't hesitate in recommending Cornel and his team.
Home improvement
Rating: 5 out of 5
Extension Builder in Dulwich
“Reliable handyman with 7+ years of experience in flooring, plastering, and general home repairs. I take pride in clean work, clear communication, and finishing jobs on time. Available for small to medium projects — no job too small!
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Latest review:
Handyman- 5 Jun 2026
Shere was amazing. He was very quick and professional, and did a very good job. Was very happy with the result. Would definitely hire again
LH Builders & Plumbers
Rating: 5 out of 5
Extension Builder in Dulwich
Hi we do all building works been in the business for 25 years we are a family run business.all our tradesmen are fully qualified.we aim to please our customers as word of mouth is essential to us No job to small. We also do camera drain inspections and leak detection with thermal imaging. Leah is our assistant and replies to emails and sends us the job leads while we are working
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Latest review:
Plumbing- 21 May 2026
Gareth responded quickly, communicated well, completed the job, and did another one on the same visit. Tidy. Would definitely hire again. Thanks Gareth - great job.
Exquisite Design & Build Ltd
Rating: 5 out of 5
Extension Builder in Dulwich
Welcome to Exquisite Design & Build, a premier construction company based in London. We specialise in delivering exceptional construction work and Architectural & Structural Design services to both Commercial & Residential Clients. Our comprehensive offerings include the full range of Building & Refurbishment Works, Planning Applications, 2D & 3D Design and Visualisations, Structural Design, Project Management and detailed Estimates. “Exquisite” - carries the implication that every detail of our work, is of rare and appealing excellence. We transform your vision into reality with precision and professionalism, ensuring a seamless and satisfying experience from concept to completion. Our company is TRUSTMARK registered company, a Government-endorsed sign of consumer protection for home improvements, repairs, renewable energy installations and low energy retrofits. We are also member of the FEDERATION OF MASTER BUILDERS.
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Latest review:
Exquisite Design and Build recently reworked and refurbished our new, six bedroom detached house, having previously completed a kitchen extension at our last property. Andrei’s work is of an incredibly high standard. He shows great attention to detail throughout the entire process. Not only does he execute the work beautifully, but he offers great design ideas and and suggestions. With regard to contracting, pricing and invoicing, Andrei provides clear and accurate documentation which gives us complete trust in his ability to work within our budget. Andrei and his team are an absolute pleasure to work with; hardworking, punctual and tidy. I have recommended them to three other friends, all of whom chose to work with him on their extension/refurbishment projects and were equally delighted with the results. I would not hesitate to recommend Exquisite Design and Build to anyone, regardless of the size and complexity of their project.
V&B LANDSCAPE
Rating: 4.9 out of 5
Extension Builder in Dulwich
Hi We are polite team and true fare builders, we have been in the business from 2014 . competitive prices. We believe in great customer service and offer our customers the best that we can in terms of planning, pricing and installing. We offer a free quotation, We are so confident in our work we are happy to give you work reference.
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Latest review:
Landscaping- 19 Aug 2019
Vladimir and his team made this project a very enjoyable experience. He understood the brief perfectly, and didn't bat an eyelid when it changed underway. I would highly recommend Vladimir.
M Murphy Build
Rating: 5 out of 5
Extension Builder in Dulwich
Hello! My name is Mick. I have many years experience in all areas of construction. I enjoy what I do & love creating new spaces for people, so it has to be of high quality or else there would be no satisfaction in it for me! I have done extensions, sunrooms, renovations, lofts, bathrooms, kitchens and new builds.
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Latest review:
Extensions- 21 May 2019
Excellent workmanship, completed extension with bathroom in good time. Very pleased with the work!
City Building and Roofing Ltd
Rating: 4.9 out of 5
Extension Builder in Dulwich
City Building and Roofing Ltd provides professional roofing, refurbishment and building services across London and Surrey. Our services include roof repairs, new roofs, flat roofing, GRP roofing, roof refurbishment, guttering, fascias and soffits, chimney work, damp proofing, brickwork and full property refurbishment. We work with homeowners, landlords and commercial clients, delivering reliable workmanship, honest advice and free no obligation quotes.
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Latest review:
Damp Proofing- 26 Mar 2022
Good,timely and clean workers. Worked hard and efficiently with clear explanations. Very satisfied with the finish.
Lux Development LTD
Rating: 5 out of 5
Extension Builder in Dulwich
With a BSC Hons Degree in Construction management and having worked for larger reputable building contractors in the UK. We will Ensure you get the highest Quality of Work at reasonable Prices. Customer Satisfaction is our First Goal of any Project we Undertake. We undertake all types of construction and building projects from Painting and Decorating, Flooring, Roofing, Plastering to More Complex Projects such as extensions.
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Latest review:
Painting & Decorating- 12 Feb 2019
He truly showed professionalism that I had struggled as a guest house operator to get from handy people. He would go out of his way to satisfy. The finished redecorated room project was a masterpiece and took a little longer than planned because of the weather but he gave it his all! I am pleased I took a chance on him as there was no review on his profile when I hired him. I would however, pay attention to work and point out issues as they come up otherwise, you will have dirt and rubbish to content with as the workers leave all the mess after work.
K & M Roofing Solutions LTD
Rating: 5 out of 5
Extension Builder in Dulwich
K & M Roofing Solutions LTD is a UK-based building and roofing contractor providing a wide range of construction, roofing and property maintenance services. We specialise in all aspects of roofing, including flat roofs and pitched roofs, roof repairs, full roof replacements, waterproofing systems, leadwork, fascias, soffits and guttering. In addition to roofing, we also carry out general building works, external repairs, remedial works, and ongoing property maintenance. Our approach is practical and transparent — we provide clear scopes of work, honest advice and detailed quotations, focusing on long-term solutions rather than temporary fixes. Whether it’s a small repair, preventative maintenance or a larger refurbishment project, every job is completed with care and attention to detail. We work with homeowners, landlords and managing agents, and all works are carried out in accordance with recognised industry best practice. Customer satisfaction, reliability and quality workmanship are at the core of what we do.
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Latest review:
Roofing (Flat)- 1 Mar 2026
Kamil came and viewed the leak and quoted to re surface the flat roof with the hydronylon system. Kamil was professional, tidy and kept me up to date on his work. I feel he wanted to do the best job at an affordable price. Would recommend.
Prodec Construction ltd
Rating: 5 out of 5
Extension Builder in Dulwich
With over 16 years experience our reputation has developed very soundly as a specialist building contractor. We work on many types of projects including domestic houses, health care sector, and housing developers. Our service is designed around delivering the highest standard and quality.
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Latest review:
Painting & Decorating- 18 Jun 2025
Martin has done an excellent job for us. He is professional, polite and helpful.

3.9

Top rated Extension Builders

Our Extension Builders in Dulwich, are rated 3.9 out of 5 based on 18 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.