Extension Builders in Sevenoaks

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.3 (14 reviews)

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Some of our top rated extension builders in Sevenoaks

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Heritage property services
No reviews yet
Extension Builder in Sevenoaks
I run a family property building and maintenance business, ranging from small jobs to complete extensions and new build projects. We always offer free no obligation quotations and never any pressure to accept quotations.
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MAC CARPENTRY
No reviews yet
Extension Builder in Sevenoaks
McCormick Build is a Kent-based construction company specialising in bespoke new builds, high-quality renovations, extensions, and full property transformations. We provide a complete end-to-end service—from initial design and planning support through to construction and final finishes—delivering projects that combine craftsmanship, efficiency, and attention to detail. Working closely with homeowners, developers, and consultants, our team manages every stage of the build process to ensure clarity, cost control, and exceptional results. Whether transforming existing homes into modern living spaces or delivering carefully designed new-build properties, we focus on quality workmanship and long-term value. With a trusted network of skilled trades and a hands-on approach to project delivery, McCormick Build offers a reliable, professional service tailored to each client’s vision.
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JVR Renovation Ltd
No reviews yet
Extension Builder in Sevenoaks
JVR Renovation Ltd is a Renovation Company in the area of Sevenoaks, Kent. We have a heart to build! We pride ourselves on our workmanship and ensure all our work are done to the highest standard. Our relationships with our clients are also a priority and we work closely alongside our clients to see their vision for their home become a reality. We endeavour to meet our building targets on time to ensure we do not overrun on our projects.
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ml carpentry
Rating: 5 out of 5
Extension Builder in Sevenoaks
To all cilents, my name is michael banfield, i have been a carpenter for 23 years, i am reliable, friendly, hard working, and get on with all my cilents. Nothing is to much trouble. My company has grown over the years, I mainly work on extensions and house renovations, with my team of trades we can take on any size of jobs, and will always deliver a high standard of Finish. Please feel free to contact us
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Latest review:
Kitchen Fitting- 7 Sep 2022
Michael and his team have done a fantastic job on our kitchen renovation. We are so pleased with the transformation. They were all really friendly and easy to get on with. Nothing was ever too much trouble and the communication with Michael was excellent throughout! Would definitely recommend this service.
Master Build Carpentry Ltd
Rating: 3.7 out of 5
Extension Builder in Sevenoaks
N/a
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Latest review:
Carpentry- 7 Sep 2021
The cladding was due to start yesterday, Monday 6th of September. In the weekend, I was told they would come do a site visit on Monday instead of starting the job. They came on site yesterday morning and nothing was said about any issues. They said they would start the next day, Tuesday. I got a call at the end of the afternoon (around 5 pm) yesterday to be told suddenly that there are many problems; not levelled portions of frame (which can be easily rectified), no toilet on site (which they knew about - they knew also that the public toilet is only 50 m away), access problems which they also knew about ect... Suddenly a multitude of problems arised! They wanted more money. It is very obvious that they found another job somewhere. I would classify this sort of behaviour simply as not honest. Also expensive- I was quoted £4000 to clad a tiny first-floor(38 m2) . The overall cladding would be 75 m2 in total. Disappointing.
Don Buildings Ltd
Rating: 4.9 out of 5
Extension Builder in Sevenoaks
Don Buildings Ltd Client satisfaction is our primary concern and goal. If you are looking for top quality efficient and professional service, so look no further Don Buildings Ltd is here for you For and on behalf of Don Buildings Ltd, Donatas
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Latest review:
Extensions- 27 Apr 2024
Super professional job, clean and efficient.
Newbuild Conversions Ltd
Rating: 5 out of 5
Extension Builder in Sevenoaks
Hello, with Newbuild conversions ltd we offer a range of extensions, loft conversions and garden projects. We have tradesmen with many years of experience behind them and the up and coming youngsters also. We are a family run business, so being able to provide a family with a more comfortable way of living is at the top of our list right along side of finishing jobs to a high standard and for the smallest time on a job as humanly possible.
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Latest review:
Loft with dormer and renovation of first floor completed. Jordan (new build) has done a fantastic job on my new loft and first floor. At every stage of the build I was kept up-to-date with progress. Jordan and his workers arrived on time and kept my house tidy during the works I changed my mind over a few things but this was no issue for him I wanted some extra jobs doing which again was completed to his high standard s. He is currently completing my downstairs extension and progress is on time and the build is looking very good. He is also doing my garden (fencing and patio ) I have no issue recommending him to do any house projects. He is Skilled Punctual Knowledgeable Organized Competitively priced You won't be disappointed.
Viper Groundwork and Construction LTD
Rating: 5 out of 5
Extension Builder in Sevenoaks
We undertake all groundwork, landscaping and construction jobs
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Latest review:
Groundwork & Foundations- 13 Aug 2021
I would highly recommend Jason and his team. Jason visited the site to quote within a few days of first speaking to him and at exactly the time he specified. We chose Jason as he provided a competitive and transparent quote and could start removing our driveway relatively promptly. When his team started the job we soon realised the driveway was thicker and more reinforced than we had hoped but Viper worked very hard and managed to lift it within the three days' time estimate that Jason has originally estimated and kept to the original budget. We subsequently employed Viper to dig a hole and build retaining walls for an exercise pool we were sinking into the garden and again were very satisfied with their work - both the quality and speed as well as their problem solving when we encountered some drains that we didn't expect (and again they honoured their quote despite having to overcome several obstacles). Thanks Viper - we will definitely consider you for any groundwork and construction work we have in the future!
Butterfly Design and Build
Rating: 3.7 out of 5
Extension Builder in Sevenoaks
Our company was founded in 2015 by myself and my partner Alex and have been family friends for years.We specialise in domestic renovations and extensions to properties We have years of experience in our forever growing team from electrical to brick work With all works being run by both owners we offer a daily commitment to all jobs being carried out by ourselves
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Latest review:
Conversions - General- 7 Mar 2021
Great job, built exactly to spec requested. Would definitely recommend.
Build My Place
Rating: 5 out of 5
Extension Builder in Sevenoaks
I'm a builder with solid carpentry and cabinet making background. I'm in the building industry over 20 years. I'm specializing in loft conversions, extensions, refurbishments and bespoke furniture. I also do bathrooms and kitchen instalations.
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Latest review:
Carpentry- 29 Jan 2026
From start to finish it didn’t take long to realise we had chosen the right company Very professional, tidy and on time We had 4 internal doors installed and some boxing in to be done in the bathroom I would highly recommend
Beeson Building Services Ltd
Rating: 5 out of 5
Extension Builder in Sevenoaks
A family owned and run building contractor, undertaking all aspects of building works. Professional and reliable service, with team members specialising in a wide range of trades.
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Latest review:
Restoration & Refurbishment- 13 Jul 2022
Massive thank you to Mike and George who did such a great job in taking out our chimney breast yesterday. So so pleased and very reasonably priced
R P WESTON CONSTRUCTION
Rating: 5 out of 5
Extension Builder in Sevenoaks
R P Weston Construction Building with quality. Built to last. R P Weston Construction is a professional, reliable construction company covering all aspects of building and groundwork. From smaller projects and renovations to complete new builds, we provide a comprehensive service from start to finish. Our experience covers brickwork, carpentry, groundworks, extensions, new builds, patios, driveways and general construction, allowing us to manage a wide range of projects with one trusted team. Whether you’re looking to transform your existing home, build a new property, create a new driveway or patio, or simply need quality building work carried out, we take pride in delivering a high standard of workmanship, attention to detail and dependable service. Our services include: Brickwork & blockwork Carpentry & joinery Groundworks & foundations House extensions New builds Patios & landscaping Driveways Renovations & refurbishments General building work Project management from start to finish At R P Weston Construction, we believe in doing the job properly — combining quality materials, skilled workmanship and professional service to deliver results that are built to last.
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Latest review:
Conversions - General- 24 Aug 2026
Very professional, definitely recommend him and his team. They did front wall demolition and drive way extension. Very satisfied with the results.
Building Ideas
Rating: 5 out of 5
Extension Builder in Sevenoaks
With over 30yrs construction experience, I can offer a friendly, bespoke Architectural design service. Offering creative solutions from initial drawings to planning ,full working drawings and structural engineering calculations. I have been working between architectural design services and high end residential project management projects so believe I can bring value ,creativity and ultimately a strong understanding of what is required to deliver a project.
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Latest review:
Architecture- 20 Nov 2016
This is the first time we are carrying out an extension work at our property. Sean worked with us from a very early stage, prepared the drawings, coordinated with the council and ensured that we received the building approval on time. He was always available to advice us (when requested) on design challenges, choosing installers and material choices which we found very helpful. We are very happy with his work and thoroughly recommend him.
Design and build Kent LTD
No reviews yet
Extension Builder in Sevenoaks
Design and Build Kent . Fully insured building company with a number of approved trades, working project managers including myself. All jobs insured, customer reviews on website Look forward to helping and quoting your project.
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ISMA PLUMBING & BUILDING LIMITED
Rating: 5 out of 5
Extension Builder in Sevenoaks
We are a team of hardworking tradesman offering high quality finish building work. I am a experienced Multi-trade and qualified City and Guilds Plumbing. I have wide knowledge of building industry. My motto is to provide a good service and build a good relation with customers.
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Latest review:
Extensions- 30 Apr 2018
We had a single story extension with chimney stack removed. Work done on a steep hill with access only via the front door over the winter months. Ben and his team did all the work which included: Digging and laying foundations Removing ground floor back wall and installing steal frame to structural engineers designs Building extension with required gaps for windows which were installed by another supplier Extension is over Thames water waste pipe, work done as required for build over agreement Flat fiber glass roof on extension Chimney stack removal, roof made good and lead flashing added. Installed new boiler, power cleaned system and removed unnecessary parts of system Installed underfloor heating to extension All water and gas pipe work along with electrics installed in kitchen & bathroom New electrical consumer unit installed and testing done on existing system Kitchen installation - hung Ikea cabinets, installed surface, sink, hob, built in oven & microwave and fridge freezer Bathroom installation - shower, toilet, sink and additional furniture. Plastering and Decorating Decking with steps down to garden Addressed all comments from building control and provided relevant certificates for work All this work was done whilst my partner was pregnant and after the arrival of our child. The team were considerate to this environment. We're pleased with the work that Ben and his team has done, we have already recommend him to a number of friends.
Thor Builders
Rating: 5 out of 5
Extension Builder in Sevenoaks
Thor builders ltd is a father and son building company. Time served builders. We cover all aspects of building and landscaping. Reliable and honest builders. Thanks.
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Latest review:
Extensions- 25 Jun 2022
Really good job from a builder who turns up when he says and does what he says. Price was very reasonable and finished early. Would definitely recommend !!

3.3

Top rated Extension Builders

Our Extension Builders in Sevenoaks, are rated 3.3 out of 5 based on 14 reviews from customers like you.

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What types of services are offered by local extension builders in Sevenoaks?

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

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

What are the hourly rates of extension builders in Sevenoaks?

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

Find extension builders in Sevenoaks with MyBuilder

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

Step 2: Compare different extension builders in Sevenoaks

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

Step 3: Hire Sevenoaks extension builders with confidence

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

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

What to ask a Sevenoaks extension builder before hiring?

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

An extension builder in Sevenoaks 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 Sevenoaks 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 Sevenoaks?

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 Sevenoaks 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 Sevenoaks 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 Sevenoaks

Can an extension builder in Sevenoaks help with planning permission?

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

Many Sevenoaks 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 Sevenoaks help with materials and finishes?

Yes, most extension builders in Sevenoaks 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.