Extension builders in Croydon

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (19 reviews)

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Some of our top rated extension builders in Croydon

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JM Build Ltd
Rating: 5 out of 5
Extension Builder in Croydon
We are team of professional builders specializing in refurbishments, loft conversions and extensions.Do not hesitate to contact us for a no obligation quote. We are also proud member of Checkatrade. You Dream It We Build It.
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Latest review:
Extensions- 14 Jul 2021
Juro and his team completed a total refurbishment of our house that included removing all internal walls, along with a double story side extension, a huge job involving lots of steels, re-roofing, new construction, new bathrooms and kitchen, new windows and rendering along with all the plumbing and electrical work and decoration. They did the most incredible job, working efficiently, adapting to any problems that came along and working really hard to create the best finish possible at the budget we had. Despite the pandemic arriving just after the demolition stage, they didn’t miss a day on site, and worked tirelessly to get materials to keep the project moving. Incredibly they still managed to finish the project on schedule and to a standard that was exceptional. Juro is honest and upfront, didn’t ever add costs or ‘unforeseeables’ and was an absolute joy to work with. He also stuck to a very clear payment schedule that was easy to follow and always meant we only paid when we were absolutely 100% happy. My only reservation in writing this review is that I would like to selfishly hang on to him and keep his schedule clear for future jobs with family and friends!
Unique Interiors
No reviews yet
Extension Builder in Croydon
We are a company that specialise in good quality workmanship we are reliable & friendly and honest we have 28 years in the trade with a good knowledge of experience we specialise in all aspect of building works from small jobs to your extension & lofts we have a good client base and happy customers.
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LGC Builders Ltd
Rating: 5 out of 5
Extension Builder in Croydon
We are a family run Company and we are currently expanding our Company and have over 30 years experience in the building industry. We specialise in all aspects of the building industry and pride ourselves on our main trade as bricklayers. We guarantee a high standard of workmanship and get on well with all our clients.
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Latest review:
Bricklaying- 15 Nov 2019
They did a fantastic job and were very knowledgeable and highly professional throughout. They got on with it even though the weather was terrible and kept the site tidy and organised. We are delighted with the end result - on time and to budget too! I have no hesitation in recommending them. Thank you!
UQC – Construction & Refurbishment
Rating: 4.7 out of 5
Extension Builder in Croydon
UQC is a London-based construction company specialising in high-quality residential projects, including: • House extensions (rear, side return and wraparound) • Loft conversions (dormer and hip-to-gable) • Full property refurbishments • Structural alterations (RSJs and load-bearing walls) • Kitchens and bathrooms We work closely with architects, structural engineers and Building Control to ensure all work is fully compliant and delivered to a high standard. UQC stands for Unique Quality Construction — reflecting our focus on precision, organisation and attention to detail on every project. We prioritise clear communication, well-managed sites and reliable delivery from start to completion. Based in Bexleyheath, we cover South East London and surrounding areas.
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Latest review:
Conversions - General- 4 Jun 2026
very good service
ARL
No reviews yet
Extension Builder in Croydon
painting, ceramics, plumbing. I like to be responsible, good quality in my work, guaranteed
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INNOVATE BUILD GROUP LTD
Rating: 4.8 out of 5
Extension Builder in Croydon
I have over 20 years of experience in the construction industry. I am highly customer-focused and quality-driven, always aiming to complete jobs to the highest standards. My key goal is to ensure every project meets /exceeds customer expectations, delivering outstanding results every time.
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Latest review:
Extensions- 7 Jun 2026
Zilvinas and the team at Innovate Builders were outstanding from start to finish. We hired them to build our two-storey side extension. Zilvinas was open, professional, and fully committed throughout the project. He was always available to answer questions, offer advice, and guide us through each stage of the build. His team worked hard and delivered a high-quality finish, all while keeping the project on schedule and within budget. As this was our first major building project, we relied heavily on Zilvinas's expertise and guidance. His knowledge, practical advice, and problem-solving skills were invaluable and made what could have been a stressful experience feel smooth and manageable. We are absolutely delighted with the result and would not hesitate to recommend Innovate Builder. As I said it was our first ever big project, we had heard many horror stories but are so grateful to have found Zilvinas and his team.
Maksmith Ltd
No reviews yet
Extension Builder in Croydon
At Maksmith Ltd, we specialise in loft conversions, house extensions, renovations, and residential construction projects across London. Established in 2024, the company was founded to provide homeowners with a reliable, professional building service backed by decades of hands-on industry experience. The company is led by Stephen Smith, an experienced construction and project management professional with over 40 years in the building industry. Before founding Maksmith Ltd, Stephen successfully managed projects for some of London's leading loft conversion and extension contractors, overseeing multiple developments and delivering high-quality results on time and within budget. Stephen's reputation has been built on clear communication, strong project leadership, and an ability to coordinate skilled teams efficiently throughout every stage of a build. His practical construction knowledge, combined with a Bachelors level Higher Diploma in Construction Management, allows him to manage projects of varying size and complexity with confidence and precision.“My strength is in building and completing projects, I'm good with that and have the ability to direct & support teams to deliver at scale and a track record to prove it”. At Maksmith Ltd, we understand that every project is a significant investment. That's why we focus on: ✓ Clear and honest communication  ✓ Professional project management  ✓ High-quality workmanship  ✓ Reliable timelines and budgets  ✓ Exceptional customer service Our goal is to make the process straightforward, transparent, and stress-free while delivering results that exceed expectations. We are proud of our reputation and are happy to provide references from previous clients upon request. Get in touch today to discuss your project and see how Maksmith Ltd can help bring your vision to life.
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Kapa International
No reviews yet
Extension Builder in Croydon
kapa loft and extension has been providing the best services to south London and surrounding areas since 2017. We are a new business with builders has 12 years of experience in construction business. Fair prices, superior quality and exceptional customer service are guaranteed when you work with us.
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Basil
New on MyBuilder
Extension Builder in Croydon
"With years of extensive experience in the construction industry, I specialize in tackling and resolving any structural or repair issues efficiently. I pride myself on being punctual, professional, and reliable. No matter the scale of the problem, I ensure it is fixed properly and strictly on schedule. Customer satisfaction and top-quality workmanship are my main priorities."
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Goldberg Engineering Ltd
Rating: 5 out of 5
Extension Builder in Croydon
Chartered Structural Engineer offering design services for: - house extensions - loft conversion - internal alterations - structural surveys - Design of Steel and timber Beams - Design of Foundations and Walls
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Latest review:
Loft Conversion- 14 Oct 2021
Zilvinas produced drawings promptly and at a very competitive rate. He attended several site visits and ensured to incorporate all of our ideas. We have received fantastic after sales service from GoldBerg Engineering throughout the project and would not have had the results we have, without Zilvinas. Goldberg Engineering has provided brilliant guidance throughout, through rapid response emailing, regular Skype and several site visits. Goldberg approved each work phase and continues to offer support. Thank you very much! Highly recommend, 5Star!
Edikas Uselis
No reviews yet
Extension Builder in Croydon
Eddie – U E BUILDING LTD Reliable • Experienced • Quality Workmanship Looking for a trusted builder? We specialise in all types of home improvements and refurbishments, including: ✔️ Kitchen & bathroom renovations ✔️ House extensions ✔️ Carpentry & joinery ✔️ Plastering & bricklaying ✔️ Garden maintenance ✔️ General building work 💪 Friendly, hardworking & always tidy ⭐ Highly recommended by happy customers on my Facebook page
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KBS London Ltd
Rating: 5 out of 5
Extension Builder in Croydon
We are a North London Carpentry and General building company. I am a Qualified Carpenter from New Zealand, I have 30 years experience with 20 in London. We can carry out all works on residential, retail and commercial projects, from strip out to completion. We have a network of tried and proven tradesmen and suppliers. We are Quick Clean happy to work out of hours if necessary. I will do you a free quotation and happy to discuss works and guide you if necessary. Karl
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Latest review:
Carpentry- 8 Jun 2026
Responsive and good communication - delivered the job as planned and quoted. Would recommend.
Wisent Construction Ltd
No reviews yet
Extension Builder in Croydon
We are a local family business, specialising in domestic projects and renovations, from internal refurbishments to extensions and even new builds. With almost 30 years of experience within the family, we are always happy to make the dream home come true.
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GS&M Construction
Rating: 5 out of 5
Extension Builder in Croydon
GS&M Construction is a solid family run business. we are reputable long standing building contractor. We are Reliable, Conscientious & Personable builders working in london & the south east offering a value for money service.
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Latest review:
Sean plastered my front room ceiling. He was tidy, punctual, cleaned up after himself each day, very polite, friendly and well mannered, and the job was at a decent price. I am very happy with the work - the fact that he cleaned up - I appreciated. I would highly recommend him.
D A Daly Renovations
Rating: 5 out of 5
Extension Builder in Croydon
Loft conversions, Extensions, full refurbishments, Bathrooms, kitchens, patios...etc.
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Latest review:
Conservatories- 10 Dec 2023
They were Quite professional.
Statecraft Building Ltd.
Rating: 5 out of 5
Extension Builder in Croydon
We strive to provide the best building services posible within and outside London. Our company has been built on continuous recommendation, repeat custom and quality workmanship. We offer full building services and you can be sure we`ll take care of the job.
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Latest review:
Milen, initially came as I had a leak in my ensuit where the tiles had lost their grout. He was very honest in giving me advice, and regrouted at a very reasonable price. He then came a month later to remove the tiles in the shower and replace the plaster protection board, then retiled. He purchased all the products and gave me advice on the most valuable sustainable tiles. The work was carried out a to very high level, I would most definitely hire Milen in the future, and highly recommend him.

4.2

Top rated Extension Builders

Our Extension Builders in Croydon, are rated 4.2 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 Croydon?

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

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

What are the hourly rates of extension builders in Croydon?

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

Find extension builders in Croydon with MyBuilder

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

Step 2: Compare different extension builders in Croydon

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

Step 3: Hire Croydon extension builders with confidence

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

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

What to ask a Croydon extension builder before hiring?

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

An extension builder in Croydon 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 Croydon 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 Croydon?

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 Croydon 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 Croydon 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 Croydon

Can an extension builder in Croydon help with planning permission?

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

Many Croydon 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 Croydon help with materials and finishes?

Yes, most extension builders in Croydon 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.