Extension builders in Swanley

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.6 (17 reviews)

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Some of our top rated extension builders in Swanley

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Montrose builders limited
Rating: 5 out of 5
Extension Builder in Swanley
Montrose builders is family run having been established by 2 brothers Neil & Nick. Are expertise and knowledge makes us the first choice in providing building services for both homeowners and commercial enterprises. most of our work comes through recommendations providing an honest testament of the service we provide. our company is run on the cornerstones of being family run, providing quality work for the fairest price, with a company ethos of being approachable, friendly and honest.
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Latest review:
Waste Clearance- 17 Jun 2024
Excellent service, quick responses to messages and queries. Work carried out to a high standard, I wouldn’t hesitate to recommend or use them again.
BCG Carpentry
Rating: 5 out of 5
Extension Builder in Swanley
I am a fully qulilafied NVQ level 3 carpenter, i offer a wide range of services mainly carpentry from pitching roofs, joisting, kitchens, skirting and hanging doors. Also new builds, refurbs and extensions. I've been in the trade for more than 10 years so have quite a range of experience.
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Latest review:
Carpentry- 9 May 2019
Ben did a very professional job hanging four internal doors. He arrived at the time we agreed and cleaned up thoroughly. I will definitely ask him back to do other work and would certainly recommend him.
KINVEK CONSTRUCTION
Rating: 5 out of 5
Extension Builder in Swanley
We are a family run business, established January 2005, Kevin is a carpenter with over 40 years in the building industry, my son Matthew, who is a plumber, has been working with me for the last 10 years and wife Julie has been in the office since the start We pride ourselves on being friendly polite and trustworthy We do all types of building work, extensions, kitchens, bathrooms, carpentry, plumbing, electrics and decorating, fencing, decking
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Latest review:
Carpentry- 19 Aug 2026
Kevin was very competent supplied all the materials needed and did a thorough good job .I was very pleased and will be hiring him again when he is available
great construction limited
Rating: 5 out of 5
Extension Builder in Swanley
I am a builder who undertakes all types of jobs from kitchens, bathrooms, drive ways, garden work, roofing, extensions loft conversions, painting, flooring, plastering
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Latest review:
Extensions- 1 Aug 2024
Good work progress and ethos. All going very well.
UR BUILDERS
Rating: 4.9 out of 5
Extension Builder in Swanley
Hi ,we are doing every type of construction and building work including electric and plumbing. We undertake all kinds of refurbishments and new extensions ,you can see our finished and running jobs anytime. We have alot references .Our aim is customer satisfaction as we always trying to provide a good service in unbeatable price.
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Latest review:
Extensions- 8 Jan 2025
We hired UR Builders to do our garden room and porch. Sal and his team were amazing, they are hard working and we had excellent communication throughout. His team worked for long hours to meet our tight deadline and produce a highly finished work. We already looking forward to do our next project with Sal and his team. Highly recommended builder
Mantac Building and Roofing
Rating: 4 out of 5
Extension Builder in Swanley
Medium sized family company taking on both small and large project across London and the South East.
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Latest review:
Extensions- 17 Aug 2026
I had a very poor experience with this contractor and would strongly advise potential customers to be cautious before paying substantial sums in advance. I paid £3,672 by bank transfer following an invoice for the supply of structural steelwork. There were significant delays and communication issues, and the steel was not supplied to me as agreed. After giving him opportunities and clear deadlines to resolve the situation, I terminated the agreement and had to make alternative arrangements to keep my project moving. Most concerningly, despite my requests, the £3,672 I paid has still not been refunded as of the date of this review, and I am now pursuing the matter formally. Based on my experience, I cannot recommend this contractor. I would advise anyone considering using his services to be extremely cautious about making advance payments. I will update this review if my £3,672 is returned.
Direct response Building Maintenance Ltd
Rating: 5 out of 5
Extension Builder in Swanley
Direct Response Building Maintenance Ltd. is a well established construction company with over 15 years’ experience. Specialising in the public and private sector, Direct Response Building Maintenance Ltd. strives to form close working relationships with clients and industry professionals to provide a full service that reflects attention to detail and quality, to ensure we are the perfect solution for all your project needs.
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Latest review:
Extension and reconfiguration of kitchen/dining/family room
Hennow Construction
Rating: 5 out of 5
Extension Builder in Swanley
Hi, we are a small father son business with over 30 years of building experience. As both father and son are bricklayers we tend to take on jobs such as: extensions brick and block work; out buildings; garage conversions; garden walls; patios and drive ways. Formerly Owens Construction, we have now merged with close family friends to expand the brand and become Hennow Construction.
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Latest review:
Bricklaying- 24 Apr 2019
Jake and Harry did an amazing job with our front wall and fence in the rear garden. We got three quotes for the job and they were the cheapest but also came across professionally. It wasn't a straight forward job, it was was using reclaimed materials that were varying size and shapes. I was also quite particular on the look, I wanted the brickwork to match our house, they took care to match the pointing and bricks but offered advice on how we could save money whist still getting the look we wanted. They arrived everyday on time, they were reliable, honest and extremely hardworking. They also kept us in the loop throughout the work making sure we were going to be happy with the end result. I have already recommended them to friends and will use them again for our next project. Thumbs up from us!
Property3574
Rating: 5 out of 5
Extension Builder in Swanley
i have been in the building industry since 1980. Carpentry & Joinery is not my only trade. Electrical, Plumbing, Locksmithing,Security Alarms, & General Maintenance. All my work is to a very high standard with a very good eye for detail.
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Latest review:
Electrical- 13 Jun 2017
Aksel came and inspect our dishwasher socket that wasn't working. It was a fairly straightforward job and he came on a short notice which we appreciated.
Seymour Building Services Limited
Rating: 5 out of 5
Extension Builder in Swanley
Seymour Building Services would look after your complete project. We would organise all our tradesmen so the right trades are there at the right time. This leaves you with no headaches. Just one number to call for our friendly help and advice.
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Latest review:
Kenny and team did a brilliant job replacing my old lean-to porch area for a new smart extension with windows, door and even a cat flap. They were on time, organised, efficient and took away all the old materials and rubbish. Kenny was helpful when he visited and prompt in replying to all communications and supplying quotes and invoices. I am very happy with their work and wouldn't hesitate to recommend their services.
Bricklayer
Rating: 5 out of 5
Extension Builder in Swanley
Small bricklayers gang ready for work : Face brickwork,Block work,Garden wall's any design you like. Pointing weather struck,flash. Old stock brickwork,New build brick work, Extensions.
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Latest review:
Extensions- 1 May 2024
Vaidas and team were great. Got here early and worked solid until late. Built a 5x4m extension and done a great job. Looks good and has been approved by building control. Highly recommend.
G G Property Development Limited
Rating: 5 out of 5
Extension Builder in Swanley
We are a friendly hard working company. We pride ourselves on archiving high standards of works in short time periods. We have carried various works from new builds, complete property refurbishments, extension, loft conversion, kitchens, bathrooms, electrical and plumbing works, plastering, rendering. All works are guaranteed and fully insurance. We are a commercial, industrial and domestic company. We have many photos of works and website shall be finished in the near future.
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Latest review:
Loft Conversion- 5 Dec 2018
Firstly the date of job posting and date of completing is all down to me not being ready with finances!! Secondly, and more importantly, GG Property were the most wonderful and professional bunch of lads you can hope to met. The work was done with such enthusiasm and to such a high level of detail. We could not be happier with the finished job. Thirdly, the great building work aside, GG Property were polite, happy, friendly, punctual and great communicators. All emails answered swiftly and with accurate information. No question was to silly and no concern (this was our first major building working) was to small to be addressed. Finally we are so pleased with work we are awaiting a quote for our bathroom and look forward to getting that job completed!! In short my experience with GG Property was nothing but top quality work and customer service. Any fears of the classic 'cowboy builder' could not be further from the truth; GG Property are a hard working truly lovely bunch and we would highly recommend them.
JB Construction & Renovations Ltd
Rating: 5 out of 5
Extension Builder in Swanley
JB Construction & Renovations was founded with a genuine passion for bringing your dreams and visions to life We are committed to delivering the highest quality finish, backed by exceptional craftsmanship and professionalism throughout every step of the process. No matter the size, we plan, build, and deliver your project, bringing your vision to life with the utmost attention to detail.
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Latest review:
Extensions- 4 Feb 2025
Josh has been incredible from start to finish. His communication has been brilliant, from giving a quote, answering any questions, keeping us updated throughout the job I could not fault him. We are really pleased with the work he has done and would 1000% recommend. We will deffo be using JB constructions again in the future
Summerhill Homes Ltd
Rating: 5 out of 5
Extension Builder in Swanley
I have been operating in the building industry for more than 25 years, We have covered every aspects of works from new builds to complete refurbishments from start to finish with fully qualified trades to achieve the highest quality, From the smallest to the biggest job undertaken , Our motto is nothing is impossible to achieve a stress free project to costumer satisfaction ,Please check my web site for more information
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Latest review:
Extensions- 3 Sep 2021
did loft extension.with shower room. further extension, family room with bifolds, rewire, patio and so much more. its fantastic
B Construction Ltd
Rating: 5 out of 5
Extension Builder in Swanley
Welcome to BBS Construction services , where your vision meets our expertise. With a commitment to quality craftsmanship and unwavering dedication, we transform blueprints into beautiful, functional spaces. From concept to completion, we’re your trusted partner in building your dreams. Building your dream home or business is a significant undertaking, and we’re here to make it a seamless and enjoyable experience. At BBS Construction, we prioritise open communication and collaborative partnerships, ensuring your project reflects your unique style and needs. Let’s build something extraordinary together.
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Latest review:
We were happy with all building works that this company undertook for us. Happy to recommend them to others looking to build an extension and/or general outdoor or internal refurbishment.
CTU Interiors Ltd
Rating: 5 out of 5
Extension Builder in Swanley
I have over 15 years experience working on the tools. I started building work with my Dad when I was still in school and joined him professionally when I was 19, I am now 37. I started on suspended ceilings and plaster boarding walls and ceilings. Then I moved into more residential works doing extensions and refurbishments. I have a good team of guys around me that between us we can get any job done for you. Customer satisfaction is very important because you are as good as your last job!
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Latest review:
Plastering- 9 May 2016
Managed to fit me in at short notice and the plasterer did a thoroughly professional job and was pleasant with it.

3.6

Top rated Extension Builders

Our Extension Builders in Swanley, are rated 3.6 out of 5 based on 17 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Swanley?

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

Find extension builders in Swanley with MyBuilder

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

Step 2: Compare different extension builders in Swanley

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

Step 3: Hire Swanley extension builders with confidence

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

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

What to ask a Swanley extension builder before hiring?

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

An extension builder in Swanley 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 Swanley 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 Swanley?

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 Swanley 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 Swanley 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 Swanley

Can an extension builder in Swanley help with planning permission?

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

Many Swanley 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 Swanley help with materials and finishes?

Yes, most extension builders in Swanley 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.