Extension Builders in West 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 West Dulwich

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AK Constructions and Developments Ltd
Rating: 5 out of 5
Extension Builder in West 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.
Aitchison Development Construction Limited
Rating: 4.8 out of 5
Extension Builder in West Dulwich
We have been in the property development and building work for more than 20 years. We specialise in loft conversions, extensions, new builds, bathrooms, kitchens, steel works, driveways, decking etc. I have uploaded images of my recent works.
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Latest review:
Extensions- 20 Nov 2025
I recently had a rear extension done on my 1930s house, along with a new kitchen, upstairs bathroom, and downstairs shower room, and I honestly couldn’t be happier with the whole experience. Omer came out to view the property just before completion and kept in touch so he could start work the moment we got the keys, which was brilliant for us! From day one, his communication was spot on. He explained everything clearly, set out exactly what was included in the quote, and made sure we understood the plan so there were no grey areas or unexpected surprises which is everyone’s worst nightmare during a reno!! The quality and speed of the work were exactly what we hoped for. The team often worked weekends and late evenings to keep things moving. Omer was always at the end of the phone if we needed anything, and he’s genuinely a lovely person who made the process far less stressful with his humour. I’ll definitely be using him again.
Making Rooms Ltd
Rating: 5 out of 5
Extension Builder in West Dulwich
We are a south London-based building firm that specialises in breathing new life into homes. We work closely with our clients,alongside visionary architects, engineers and designers to unleash potential in their house and realise new and improved spaces. Whether your house requires expansion,our team of specialists work tirelessly to deliver the perfect home for you. Making Rooms are a group of passionate and multitalented individuals whose soul mission is to make your living spaces better.
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Latest review:
Extensions- 25 Jul 2024
Garden Room done to ridiculous standard. See pics. 5 star work from the lads.
OGC LANDSCAPING LTD
Rating: 5 out of 5
Extension Builder in West Dulwich
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
Flanagan Construction
Rating: 5 out of 5
Extension Builder in West Dulwich
With over 30 years experience in the Construction trade we have come across nearly ever type of project in Construction including; loft conversion, extension, new builds, conversion works and renovations of old houses.
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Latest review:
Bricklaying- 4 May 2018
Mr. Flanagan did the job really good
Extension Kings Ltd
Rating: 5 out of 5
Extension Builder in West Dulwich
I've been working in building trade for over 20 years , I can undertake any job small and big from foundations to the roof and anything between. I can provide any references and I have insurance of £5 million. Me and my team take pride at what we do and we do it first time right .our work is second to none , and proof of that is that you don’t pay anything upfront till you are fully satisfied with the quality.
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Latest review:
Extensions- 8 Oct 2018
Alban completed a lateral kitchen extension for me in west London. Very happy with the results and to add my name to others that have given 100% positive feedback. What I particularly liked - (1) Alban took great care to protect the rest of my house while working (protection, covers etc), (2) his team were friendly and polite to neighbours. Building works are always noisy and disruptive, they kept others 'on side' and (3) they worked to the timing and schedule agreed (4) they cleaned up, every single day (5) they worked to a high standard and corrected for any issues, despite my inevitable last minute changes. Wish him and team best success... happy to recommend. Rob
Sebastian's Builders
Rating: 5 out of 5
Extension Builder in West Dulwich
My business comprises of general building works, including extensions, loft conversions and house refurbishments. I also undertake smaller works including bathrooms, kitchens garden patios and fencing. I have been in the building trade for 15 years starting as a dry lining contractor and then moving to a general building firm.
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Latest review:
Bathroom Fitting- 5 Oct 2022
Sebastian did a fantastic job with our downstairs toilet. Stayed close to me as there were delays in the delivery of some of the installations I’d ordered, he worked around it quite well for us. The quality of work is great! Thanks Seb.
2AM Construction
Rating: 4.6 out of 5
Extension Builder in West Dulwich
Hi this is Ali I am electrical contractors with over 10 years of experience who covers all types of electrical work. I do both domestic and commercial installations, rewiring, fault finding, repairing, fire alarms, smoke alarms, emergency lighting, EICR Certificate
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Latest review:
Electrical- 3 Oct 2025
went very well - almost superb, maybe of 5 stars 4.9.
W8 Build Ltd
Rating: 5 out of 5
Extension Builder in West Dulwich
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.
PK Decorating & Building Services LTD
Rating: 5 out of 5
Extension Builder in West Dulwich
At PK Decorating and Building Services we are committed to deliver the highest standards of quality in everything we do.Make the most of your property with high quality work, done the way it should be; fantastic workmanship, client communication and ensuring everything is clean and tidy when the work has been completed.While PK Decorating and Building Services is based in South London, we can deliver our services across London and the surrounding areas.If you have any questions please contact us
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Latest review:
Conversions - General- 14 Jul 2026
PK decorating and building were professional and reliable. The craftsmanship was excellent. The manager and foreman managed job very well. I would highly recommend them.
Self employed
Rating: 5 out of 5
Extension Builder in West Dulwich
With 22 years experience in bathroom fitting, I deliver high-quality work efficiently and prioritize customer satisfaction. My dedication ensures projects are completed promptly, exceeding client expectations. I excel at problem-solving and maintain clear communication throughout each project. My expertise guarantees functional and aesthetically pleasing bathrooms. Choose me for reliable, high-quality bathroom renovations.
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Latest review:
Bathroom Fitting- 24 Jan 2026
Thomas did a nice job within a short time. He brought the material and the workmanship was good. He charged reasonable rates. We highly recommend Thomas.
Sdl Services Ltd
Rating: 5 out of 5
Extension Builder in West Dulwich
SDL Services, we are experts in all aspects of construction and offer various solutions tailored to your specifications, from refurbishments, extensions, and loft conversions to groundwork. Our team is experienced in handling the delicate details and customization that help bring your project to life. Whether upgrading your environment or starting from scratch, SDL Services prides itself on delivering results beyond the norm.
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Latest review:
Landscaping- 15 Jul 2026
Zen and his team did an excellent job transforming my garden. They removed the old decking and arch, installed a new porcelain patio, painted the fences and walls, laid new turf and completed the work to a high standard. The finished result looks fantastic and I’m very pleased with it.
Brick by brick
Rating: 5 out of 5
Extension Builder in West Dulwich
I specialise in extensions , loft conversions and home improvements I have over 15 years experience from new builds to refurbishing
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Latest review:
Bricklaying- 4 Jul 2023
Harry was very professional and repaired my wall. Really pleased with the job. Would definitely recommend his work 5 stars ⭐️
3 plastering guys
Rating: 5 out of 5
Extension Builder in West Dulwich
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.
WBS LONDON
Rating: 4.9 out of 5
Extension Builder in West Dulwich
We offer a wide range of services so that we can take care of your needs and requirements. General Building work Refurbishment Extension Loft Conversion Demolition Ground work Partitions and Ceiling Electric work Plumbing work Plastering Painting/Decorating Tilling Flooring Rendering Driveway/Patio Fencing
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Latest review:
Plastering- 27 Jun 2026
Wally did an excellent plastering job, skillfully and speedily. He was considerate to us working from home.Will use again
NEXGEN BUILDERS LIMITED
Rating: 5 out of 5
Extension Builder in West Dulwich
Next Gen Builders - Your Trusted Construction Partner Our Services: NHBC-certified new builds Home extensions (side, rear, and double-story additions) Loft conversions Complete home renovations and transformations Plumbing services End-to-end solutions from design consultation to final finishing What Sets Us Apart: Qualified and experienced construction professionals Superior craftsmanship with meticulous attention to detail Outstanding customer service throughout every project Comprehensive project management from planning to completion Our Time Guarantee: We commit to agreed completion dates in our contracts If we exceed the timeline, we provide daily compensation for overstaying on your property No excuses - we deliver on our promises Why Choose Next Gen Builders: Guaranteed workmanship Exceptional finishing standards Complete peace of mind throughout your project Your trusted choice for all construction needs
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Latest review:
We hired Next Gen Builder for a full kitchen revamp including layout change, underfloor heating, new electrics, and cabinetry. The whole process was smooth, and we couldn’t be happier. It took more time than we thought but it is worth the wait..

3.9

Top rated Extension Builders

Our Extension Builders in West Dulwich, are rated 3.9 out of 5 based on 18 reviews from customers like you.

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What types of services are offered by local extension builders in West 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 West 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 West Dulwich who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in West Dulwich?

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

Find extension builders in West Dulwich with MyBuilder

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

Step 2: Compare different extension builders in West Dulwich

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

Step 3: Hire West Dulwich extension builders with confidence

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

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

What to ask a West Dulwich extension builder before hiring?

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

An extension builder in West 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 West 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 West 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 West 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 West 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 West Dulwich

Can an extension builder in West Dulwich help with planning permission?

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

Many West 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 West Dulwich help with materials and finishes?

Yes, most extension builders in West 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.