Extension Builders in South Kensington

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 South Kensington

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hrs build ltd
No reviews yet
Extension Builder in South Kensington
We are specialize company for interior and exterior ,extension refurbish painting and decoration chimney removal roof construction loft conversions .
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2bros brick genius
No reviews yet
Extension Builder in South Kensington
Hi my name is Dio. I got 5 years experience of doing brick work I can do small jobs like garnden walls to bigger jobs like extensions and houses I always work safely I don’t mind talking and explain to customers anything they want to know before and during the work .
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Top Finish Ltd
Rating: 4.6 out of 5
Extension Builder in South Kensington
We are a property refurbishment specialists with a wealth of experience in house extensions,basements,loft conversions,bathrooms kitchens and much more. We have built a reputation on the basis of providing clients with a quality service that is combined with excellent value for money. .
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Latest review:
Extensions- 16 Dec 2014
These guys were amazing!!! They have done a fanstasic job. There standard of work was extremley high. They turn up on time every day monday to friday and they also offered to work the weekends to speed up the project if needed...... which i did. The price was very competitive and i would definitely use them again always! Get them while you can!
Eloah Israel security and construction Ltd
Rating: 5 out of 5
Extension Builder in South Kensington
Hi, we are a company that prides itself on providing good work to our customers, making their dreams come true! we guarantee complete satisfaction and quality in carrying out our work, respecting the delivery times determined by our customers
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Latest review:
Erick demonstrates remarkable thoroughness, reliability, and trustworthiness. His keen attention to detail is exceptional, and he leads a highly efficient team that promptly meets all demands and tasks. He successfully refurbished my entire house in Northampton, adhering to the projected timeline without any delays or setbacks. Throughout the project, he never dismissed any of my requests and fulfilled them all effortlessly. Erick is always easily accessible, promptly responding to calls and messages. I have enthusiastically recommended him to several of my friends, all of whom are immensely satisfied and grateful for his services. Furthermore, his pricing is fair and reasonable, leaving me extremely pleased with the quality of his work.
RAQS Investment Limited
No reviews yet
Extension Builder in South Kensington
We carry out all types of building works for both residential and commercial properties, including loft conversations, extension, refurbishment, general maintenance, painting & decorating, carpentry, plumbing & central heating, electrical works, tiling. Our team comprises of professional builders, who have been carrying out the work in & around Greater London for the past two decades. We also have a branch office in East London and we cover East London as well.
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D&M CONSTRUCTION BRO. LTD
No reviews yet
Extension Builder in South Kensington
Over the 25 years D&M Construction Bro. Ltd has grown the business working for clients across London, who only demand the highest level of workmanship and service.Our best domain is quality and trust. Whether you are looking for profesional company to build extension, conversion, full refurbishment or bespoke new build home, we are here to help.
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Westldnconstruction
Rating: 5 out of 5
Extension Builder in South Kensington
Hi everyone My name is jass from Westldnconstruction we based in west London Our aim is to consistently deliver an excellent service to each and every customer. We provide a fair and honest approach to pricing with detailed quotations presented for your consideration, and we take the upmost pride and care in our service, ensuring you get the very best result possible.
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Latest review:
Extensions- 15 Sep 2025
We hired Jass for rear and side extension and Bathroom renovation. Jass gave us a reasonable offer for the build work. Jass told us It will take 8 weeks to complete but finished the job in six weeks. Jass has a team of hard working, professional and skilled workers. We are Really happy we hired Jass and his team who have produced a beautiful extension, patio and bathroom for us. Would happily recommend him to anyone.
ZS Property Maintenance Limited
No reviews yet
Extension Builder in South Kensington
At ZS PROPERTY MAINTENANCE LTD, we take pride in being a Safe Contractor accredited company with extensive experience working with housing associations throughout London. Our team of skilled operatives is fully DBS checked, ensuring a high level of trust and security in all our services. We supply all necessary products and materials to deliver meticulous and efficient results. Our comprehensive range of services includes waste removal, property refurbishment, locksmith services, end-of-tenancy cleaning, painting, kitchen fitting, windows and door installation, and house clearance. Whether you're updating a property, securing a home, or managing a move, we are committed to providing top-quality service tailored to meet your needs.
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Whitehouse Building Construction
No reviews yet
Extension Builder in South Kensington
Whitehouse Building Construction is a London based principle contractor specialising in all aspects of construction services. Our team uses their expertise to assist you in achieving your objectives, whether it is for investment purposes or to increase the value of your property. With over 20 years experience in the trade we can deliver high standard work at a reasonable price.
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Santophy Street Limited
No reviews yet
Extension Builder in South Kensington
Santophy Street Limited offer a professional and comprehensive development service, tailored to suit the construction and logistical challenges that each individual project offers. Having delivered some of most complex commercial and residential projects in London over a combined 23 years, Santophy Streets Director's, Adom Calliste and Chris Doel, work as a team to ensure that all legal and construction risks are identified and mitigated to ensure maximum value is extracted for our clients.
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Watan
Rating: 4.5 out of 5
Extension Builder in South Kensington
Hi everyone, Here at Watan Building & Renovation Ltd we undertake all aspects of domestic construction works. We have been trading for over 10 years, we are happy to give advice and free estimate on your work so please get in touch.we carry out all works on domestic buildings such as: Full house renovation, Bathroom, Kitchen, plastering, Flooring, Rendering Decorating, Electric, Plumbing (gas safe) Chimney removal, Fencing, Extension with a fantastic quality work and reasonable price.
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Latest review:
Plastering- 28 Jul 2025
Watan and his worker did a fantastic job on the lime plastering, will certainly be using in future. Extremely affordable and professional with clear communication throughout.
Ktl building Ltd
No reviews yet
Extension Builder in South Kensington
We are a trusted roofing company specializing in loft coversond installation, repairs, replacements, and maintenance. Our goal is to deliver quality workmanship, reliable service, and lasting results for every customer.
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Nsd Carpentry & Building ltd
Rating: 5 out of 5
Extension Builder in South Kensington
NSD Carpentry & Building Ltd is a family run business with over fifteen years’ experience in the industry. We specialise in loft builds, extensions, refurbishments as well as general carpentry and pride ourselves on having high standards. With our attention to detail, ability to come up with creative solutions to problems and cleanliness on site, we’ll be providing you with quality workmanship and customer care at competitive prices.
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Latest review:
Extensions- 3 Feb 2021
Trying to find a trustworthy trades person is often difficult and until you have used them you never know whether your decision was the correct one. I can say that I happy with the extension that NSD Carpentry & Building Ltd have completed. Steve can be trusted to do what is asked of him and I would be happy to use his services again. Could do better keeping the site clean and tidy!!
MO Construction
No reviews yet
Extension Builder in South Kensington
SUITE 504, CUMBERLAND HOUSE, 80 SCRUBS LANE, LONDON, NW10 6RE AMO Construction Group Ltd is a lean, high-performance construction company delivering end-to-end building solutions with zero compromise on quality, safety, or timelines. With over 15 years of industry experience, we operate with a founder-led mindset, tight operational control, and a culture built around precision execution. We specialise in residential and commercial construction, structural works, refurbishments, and full-scale project delivery. Our approach goes beyond building — we orchestrate projects from concept to completion. Every job benefits from senior-level oversight, fast decision-making, clear communication, and a delivery pace that consistently outperforms traditional contractors. Clients work with us because we reduce friction, protect budgets, and deliver measurable value. We combine a small, agile team with big-project capability, maintaining relentless standards of workmanship and accountability on every site. Small team. Big output. That’s the AMO Construction standard
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Built By Brick
Rating: 5 out of 5
Extension Builder in South Kensington
I am a Surrey based Builder with over 30 years experience. Working on smaller and larger projects, such as New builds ,Home renovations ,Extensions, Driveways, Brick-walls, Patios & fencing. I pride myself on being reliable, clean and tidy and customer satisfaction is key. I am open to giving ideas as to the best solution.
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Latest review:
Bricklaying- 19 Aug 2021
Garry was really good at giving us some advice. He was prompt in contacting us and communicated well throughout the process. His prices were very reasonable and he carried the work out promptly. The work was exactly what we wanted and we would highly recommend him.
Rattan construction Ltd
Rating: 3.7 out of 5
Extension Builder in South Kensington
Hi dear costmers we are carried out all building work and we are always try are best to make our costmers happy and satisfied thanks all in advance.
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Latest review:
Loft Conversion- 22 Mar 2024
Glad we didn't hire him. After agreeing on a price for loft conversion and back extension, Mr Rattan kept increasing the price by referring to minor things. Like charging extra for plate that goes on steel. First day when he turned up, he demanded that owner should provide tea and snack for his labour every day. Also he was not ready to include the agreed price on the contract (as he was sub contracting the job to someone else). Glad we cancelled him and hired another builder in his place. I have evidence of all communication I had with him, incase anyone wants it. I would avoid him at all cost.

4.2

Top rated Extension Builders

Our Extension Builders in South Kensington, are rated 4.2 out of 5 based on 19 reviews from customers like you.

Quality screening

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 South Kensington?

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 South Kensington 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 South Kensington who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in South Kensington?

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

Find extension builders in South Kensington with MyBuilder

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

Step 2: Compare different extension builders in South Kensington

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

Step 3: Hire South Kensington extension builders with confidence

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

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

What to ask a South Kensington extension builder before hiring?

Before hiring an extension builder in South Kensington or extension building company in South Kensington, 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 South Kensington?

An extension builder in South Kensington 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 South Kensington 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 South Kensington?

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 South Kensington 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 South Kensington 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 South Kensington

Can an extension builder in South Kensington help with planning permission?

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

Many South Kensington 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 South Kensington help with materials and finishes?

Yes, most extension builders in South Kensington 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.