Extension Builders in Kennington

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 Kennington

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AAB Home Builds Ltd
Rating: 5 out of 5
Extension Builder in Kennington
We are limited co. General builders. WE TAKE CARE TO NEW BUILD, EXTENSION AND LOFT CONVERSION Specialists in exterior RENDER (WEBER ,KEY RENDERING&SILICONE RENDERING)and interior plastering. Bathrooms kitchens and refurbishment works.
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Latest review:
Plastering- 23 Dec 2016
Denis did a good job plastering and retiling a small area of my kitchen. He responded to my ad promtly, came round the next day to quote and carried out the work 2 days later as requested. He was professional, polite and left my kitchen clean and tidy after the work was done. I'm happy to recommend him and would contact him again if needs be.
SIDDH GLAZING LTD
Rating: 5 out of 5
Extension Builder in Kennington
WE ARE A UPVC AND ALUMINIUM DOOR ,WINDOW BIFOLD MANUFACTURERS .
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Latest review:
Nice and clean job and finished on time
Oleg Yembryk
Rating: 5 out of 5
Extension Builder in Kennington
I've been working on various domestic & commercial projects for two decades.
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Latest review:
Oleg did an excellent job. Clear cost layout in quote. Was communicative through out the build so no hidden corners were cut. Any changes needed were clearly explained and any alteration easily accommodated. Very helpful with advice when needed. I would use him again and in fact would be my first choice.
B&S CONSTRUCTION GROUP LTD
New on MyBuilder
Extension Builder in Kennington
Built on Quality. Finished with Pride. At B&S CONSTRUCTION GROUP LTD we are a london-based construction company specialising in [Extensions / Renovations / Painting & Decorating / General Building]. With over years of hands-on experience, we handle every project as if it were our own home — from first cut-in to final clean-up. No subcontractor headaches, no hidden costs. Just skilled tradesmen, premium materials, and a finish that lasts. Whether you need a single room refreshed or a full property transformation, we provide free, detailed quotes and honest advice from day one. Fully insured & guaranteed work.
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Parsek Group LTD
Rating: 5 out of 5
Extension Builder in Kennington
Parsek Group has a proven track record of innovative designs, effective problem solving and attention to detail. Our goal is to meet and exceed the expectations of every customer. We are a local company with experience of a wide range in general property maintenance to A-Z finish in property finish construction & renovations
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Latest review:
Good service
Paulo
No reviews yet
Extension Builder in Kennington
Been working 3 years in construction mostly everything but expertise in laminate flooring.
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Walter weir Ltd
Rating: 5 out of 5
Extension Builder in Kennington
Walter Weir Ltd - established as a design and build contractor for the highest specification projects in residential and commercial developments in London & The South East. Our team of skilled tradesman, project managers & architects cover all scope of works within construction, who are experienced professionals, making the dream a reality for every client. We believe in cementing lasting relationships with clients & this can only be achieved by maintaining a constantly high standard of work.
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Latest review:
Groundwork & Foundations- 19 Feb 2020
Donald Weir was really professional and helpful. They got the work done and handled our queries with patience. We will be soliciting their services again very soon!
Surrey Property Maintenance & Construction
Rating: 5 out of 5
Extension Builder in Kennington
We are a family run local building company i personally have been in the building trade for over 28 years .we have a full list of completed extentions and loft conversions with satisfied clients and references avalible . We can deal with local council approval and building regulations . We have full public liability insurance
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Latest review:
Loft Conversion- 31 Dec 2019
He came first to look . Send us the quotation and then came to discuss the job. Seemed very professional in his work. After talking to him we were confident enough to hire him with our loft conversion and refurbishment of our Bungalow . Hoping that every thing is going well in the time frame and also the good quality job . So far good .looking forward to see my home beautiful to live in near future
Braerise UK Ltd
Rating: 5 out of 5
Extension Builder in Kennington
.......P L E A S E....... shortlist after reading my initial message accompanying your advert, and 100% happy with its content. I am building contractor undertaking various home improvement projects including bathrooms and kitchens design and installation, extensions and loft conversions, decorating and maintenance, electrical and central heating works. The experience in the trade goes back to 1998.
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Latest review:
Handyman- 13 Sep 2024
Clean, punctual and wow what an excellent finish. He really takes pride in his work, I would definitely recommend. A++
Blueprint Developments Limited
Rating: 4.2 out of 5
Extension Builder in Kennington
Welcome to Blueprint Builders, where your dream space becomes a reality. Nestled in the heart of London, our team is at the forefront of design and construction innovation. We specialize in transforming spaces into luxurious living experiences, with services that include: - Elegant House Extensions - Meticulous Loft Conversions - Comprehensive Renovations - Bespoke New Builds And a wide spectrum of commercial and domestic building projects designed with your luxury and comfort in mind. At Blueprint Builders, your satisfaction is not just a goal—it's our promise. We're dedicated to bringing smiles to our clients faces through meticulous attention to detail, unparalleled craftsmanship, and a seamless client experience from start to finish. Stay connected with our journey of transformation on Instagram @blueprintbuilder. Follow us for a regular dose of inspiration through updated photos of our latest projects. Dreaming of a space makeover? Don't wait any longer. Contact us today for a complimentary site visit and a personalized quote. Let's make your vision a living, breathing reality.
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Latest review:
Extensions- 19 Aug 2026
We paid for the build finished in Sept. 2025. Our concern is the foundations. The drawings specified about 1.8m depth and anti-heave boards due to clay and trees. The builder had not properly checked the drawings, then charged substantial extra for the depth. We paid, but the boards were not installed, and our photos and videos appear to show much of the foundation at about 1m. A replacement Building Controller declined to proceed without evidence of the boards. The patio, including £1,700 extension, was laid without proper excavation or a mechanically compacted base. Some tiles are loose and render is failing. Other faults include uneven floors and walls, falling plaster, catching doors, cladding gaps, poor electrical fitting, missing vents, a possible leak and unfinished items. Attendance was intermittent—about three weeks over two months—and the work felt rushed around other jobs. Our neighbour witnessed two workers urinating behind the shed. We cannot recommend this company...
Adibc Limited
No reviews yet
Extension Builder in Kennington
Adibc Ltd is a family run building company with over 20 years experience of the building & construction industry. We are a London based firm with a good reputation for the quality of our work – in refurbishment, conversion and extension projects as well as new build – and for the cost effective way in which we work. We provide a wide range of services including: - House Extensions - Remediation & Demolition - Conversion Of Existing Buildings Into Flats - Loft Conversions - Kitchens - Bathrooms - Brickwork - Refurbishments - Renovations - Conversions - Garage Conversions - New Builds - Steel Work - Kitchen Installations - Bathroom Fitting - Painting & Decorating - Landscaping Services - Carpentry & Joinery - Electrical & Network Services We have recently finished a full house refurbishment in Golders Green and a full refurb extension and outbuilding in Willesden Green and two new builds one in North Finchley and another one in High Barnet.
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Golden Fingers Building Service LTD
No reviews yet
Extension Builder in Kennington
Hello, my name is Xian Qi Chen and I am the owner of Golden Fingers Building Service. We are a new company located in South East London and cover a majority of the different categories of work in the building industry. We are dedicated and can do any type of work without losing quality or focus, at a low but still reasonable price. Our portfolio can be found on our website.
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GS Builder
No reviews yet
Extension Builder in Kennington
So we do the clean and a nice job. As all the building work is undertaken by our company. We make sure that our customers should be happy with our work
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Catalin
No reviews yet
Extension Builder in Kennington
I am pleased to introduce myself as a small construction company. I am working in this field from over 10 years. I have a proven history of providing quality work and I am confident I can provide the same level of service to your project. I do all kinds of jobs from little extensions to variety of construction projects, so if you like to learn about the services or contact for a consultation I am look forward to hearing from you!
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Lasting Ltd
No reviews yet
Extension Builder in Kennington
At LASTING LTD, we specialise in high-quality residential construction and full property renovations across London and the surrounding areas. With years of experience and a strong reputation for reliability, we deliver projects with exceptional craftsmanship, clear communication, and attention to every detail. Our services include complete home refurbishments, loft conversions, kitchen and bathroom installations, structural works, flooring, plumbing, heating and electrical upgrades, and all types of internal finishing. Whether it’s a single room or a full house renovation, we provide honest advice, transparent pricing, and results built to last. We take pride in working cleanly, safely, and efficiently, ensuring every project is completed to the highest standards. Most of our clients come back to us again and again — because they trust our workmanship and appreciate our professional approach. If you’re looking for a reliable contractor who delivers quality without compromise, LASTING LTD is here to help bring your project to life.
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BP RENOVATIONS AND CONSTRUCTION
No reviews yet
Extension Builder in Kennington
Transform your bathroom into a space you’ll love with BP RENOVATIONS AND CONSTRUCTION.We’re a local team of expert bathroom fitters offering design, installation, and renovation services. Whether you want a modern upgrade or a complete makeover, we handle everything — from tiling and plumbing to lighting and finishes. We take pride in top-quality workmanship, clear communication, and outstanding customer service.
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4.2

Top rated Extension Builders

Our Extension Builders in Kennington, 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 Kennington?

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

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

What are the hourly rates of extension builders in Kennington?

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

Find extension builders in Kennington with MyBuilder

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

Step 2: Compare different extension builders in Kennington

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

Step 3: Hire Kennington extension builders with confidence

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

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

What to ask a Kennington extension builder before hiring?

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

An extension builder in Kennington 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 Kennington 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 Kennington?

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 Kennington 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 Kennington 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 Kennington

Can an extension builder in Kennington help with planning permission?

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

Many Kennington 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 Kennington help with materials and finishes?

Yes, most extension builders in Kennington 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.