Extension Builders in Kings Cross

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (18 reviews)

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Some of our top rated extension builders in Kings Cross

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ADM TILING LIMITED
Rating: 5 out of 5
Extension Builder in Kings Cross
ADM Tiling Limited – Precision Tiling That Transforms Spaces Since 2017, ADM Tiling Limited has been the go-to choice for flawless wall and floor tiling across North London and beyond. Based in Enfield, we specialise in high-quality installations using ceramic, porcelain, natural stone, and mosaic tiles—delivering stunning results for bathrooms, kitchens, hallways, and residential/commercial projects alike. What sets us apart? Uncompromising attention to detail, meticulous preparation, perfect levelling, and finishes that look as good in year 10 as they do on day one. Our micro-company ethos means personal service, no subcontractors, and a genuine passion for turning your vision into tile-perfect reality. From modern minimalist designs to classic heritage restorations, ADM Tiling brings craftsmanship you can trust—every cut, every grout line, every project completed with pride. Elevate your space. Choose ADM Tiling. 📍 Enfield, London Company No. 11105194 | Active & Compliant
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Latest review:
Tiling- 12 Dec 2018
Great team of guys, very hard workers completed the job to a high standard and in the time frame given Highly recommended!
swift conversions ltd
Rating: 5 out of 5
Extension Builder in Kings Cross
In Swift Conversions we have a mission, which is to provide the residents of Greater London with no hassle building services where all work exceeds expectations, meets deadlines and offers excellent value for money and we work very closely with our client to ensure complete customer satisfaction. We have many satisfied and returning customers because we provide the best and most comprehensive building services in and around Greater London. We pride ourselves on offering turn key projects including all permissions, certificates, planning, structure drawings and calculations. If you are looking for experienced and friendly building company you can trust then look no further than SWIFT CONVERSIONS. Whether its a query or a quote, shortlist us here and we will be in touch very shortly as soon as we have your contact details.
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Latest review:
We have worked with Alex and his team at Swift Conversions Ltd twice now—first for a house extension and then for a loft conversion and general refurbishment —and we wouldn’t hesitate to choose them again for our next project. From the moment we received the quote to the final completion, Alex was incredibly communicative, reliable, and always had a can-do attitude. Despite the challenges of fluctuating prices in the market, he delivered the project within budget and stayed true to his word. His professionalism and trustworthiness are second to none. If you’re looking for a builder you can rely on 100%, Alex is the one to go to. Highly recommended!
London Homez ltd
Rating: 5 out of 5
Extension Builder in Kings Cross
We are Experienced but young passionate and dedicated Builder/Contractor. Don’t ask if we can do this or that just ask when we can do it. We carry out all type of works for residential and commercial properties. We provide all certificates as well. We are one door shop to carry out every type of work. You would be relieved from contacting different people for one project. We do welcome small and big jobs.
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Latest review:
I had my double side and single rear L shape Extension which had kitchens and bathrooms with bedrooms. It was turnkey project and didn’t know them before but they are Pro Contractor as they got all planning permission approved with structural calculations. They completed work in time with high standard quality and regulations and got my certificates from council. I would recommend them as Pro builder all the time.
M&V Fusion LTD
Rating: 5 out of 5
Extension Builder in Kings Cross
Jobs at high standard finish . Fast and reliable .
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Latest review:
Electrical- 22 Sep 2018
Valentin was fantastic. He was efficient and professional. He did a fantastic job and even cleaned up after the job. He was polite, friendly and knew exactly what he was doing. I will definitely be getting more work done by him and have even sent him to my parents house today after finishing my job, to get quotes for other work. Thank you for helping me out today. Much appreciated
22g construction limited
Rating: 5 out of 5
Extension Builder in Kings Cross
Hi , we are here on this platform to make your dream house into reality , with 20years of experience in all trades and expertise we will make sure you get the best service , so chose us for any kind of construction work . Thanks
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Latest review:
22g construction did my bathroom refurbished they did very good job more than my expectation I am happy to recommend 22 G construction anyone who’s looking refurbishment extension or any other work
Lusha construction ltd
No reviews yet
Extension Builder in Kings Cross
LUSHA CONSTRUCTION LTD A reliable and readily available who has been operating for the last 10 years. We pride ourselves in providing a professional, friendly, and high-quality service to fulfil the needs of our clients. These include: Ground work Refurbishment Remodelling Tile work installation Bathroom Fitters Bathroom design Bathroom refurbishment Bathroom renovation Carpentry Carpentry and Joinery Commercial builds Decorating Electrics Extensions Kitchen Fitting Landscaping Loft conversion Plastering Plumbing Rendering Restoration Underfloor Heating Fencing etc.. Our professional and friendly team members are happy to talk you through your needs and give you a free quote, so why not give us a call to get a free quote.
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Stanrock Building Services
No reviews yet
Extension Builder in Kings Cross
Stanrock Building Services is a general building contractor that specialises in residential refurbishment and extension works and commercial fit outs. We can also assist with your design and interiors requirements along with planning applications.
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Thomas Wicks Building Services Ltd
Rating: 5 out of 5
Extension Builder in Kings Cross
We are a growing domestic building company, with 20 years of experience carrying out all aspects of residential building projects. Extensions, Kitchens, Bathrooms and all of the related services such as Plumbing, Tiling, Electrics. We pride ourselves on giving the customer exactly what they want, making the experience of improving their property an enjoyable one.
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Latest review:
Bathroom Fitting- 2 Jan 2018
Tom was brilliant from start to finish. Clean and very personable, we have used him again since and will do in the future.
George
Rating: 5 out of 5
Extension Builder in Kings Cross
Mini digger and driver hire and I’m specialist in bricklaying , choose me if you need something to dig cheap Thanks
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Latest review:
Groundwork & Foundations- 7 Jun 2023
Did has work quickly
Rayway limited
Rating: 5 out of 5
Extension Builder in Kings Cross
Over 15 years of experience in building and construction industry
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Latest review:
Restoration & Refurbishment- 18 Feb 2021
Ray was an absolute professional. He fitted a new downstairs toilet which required a new soil pipe and associated groundwork as well as new stud walling to partition the space. He did most of the work himself, but brought in others for the pieces where he wanted an expert. He was flexible to small changes and was happy to take on additional work when unforeseen issues were discovered. The areas he had worked in were quickly cleaned before he left each day. Overall the work was completed to a good quality and at a reasonable price.
Nenad Jevtic
Rating: 5 out of 5
Extension Builder in Kings Cross
I've start working in the building industry 15 years ago. Over the years working in the industry I have moved up the lader and for last 4 years worked as project manager for different building company's . I have vast experience in designing and working on projects to highest standards to meet deadlines and within the budget . I have team of highly experienced tradesman and we always go extra mile to meet customers needs.
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Latest review:
Conversions - General- 6 Feb 2019
Nanad and his team have been wonderful from day one. We have had them with us a number of weeks doing all the jobs they quoted for and more, they are fast efficient and courteous of the fact we lived in for a lot of the work. Everything has been finished to a great standard and we are thrilled with our house which has been completely transformed. We have already recommended them to friends and will continue to do so and hopefully have them back in future. They are creative, solve issues that crop up easily and without fanfare extremely hardworking and all round an excellent team! Thank you for everything! Emma and James
hrs build ltd
No reviews yet
Extension Builder in Kings Cross
We are specialize company for interior and exterior ,extension refurbish painting and decoration chimney removal roof construction loft conversions .
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Peter renovation
Rating: 3.7 out of 5
Extension Builder in Kings Cross
When you need a reliable builder for refurbish or extend your property our skilled team of experienced craftsmanship are ready to help you. We can provide a tailor-made service to suit your budget and requirements!
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Latest review:
Conversions - General- 6 Oct 2025
Peter and Dan did an excellent job from start to finish. They were professional, reliable, and easy to work with. The quality of their workmanship is top-notch, and they finished everything on time and to a high standard. I’m really pleased with the results and would highly recommend them.
KB construction solutions
Rating: 4.5 out of 5
Extension Builder in Kings Cross
.Kitchen Fittings .Loft Conversion .Brick Work/ Skimming .Plastering/Plumbing .Wall & Floor Tiling .Gardening/ Fencing .Bathrooms .Wood Flooring .Extensions
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Latest review:
Extensions- 24 Apr 2021
Kujtim, working with his glazers, created a bespoke porch with a glass roof just as we asked. We were impressed with the finish of the internal plastering and Kujtim was able to come to our rescue one evening when we became locked outside the newly installed porch door. Although the project took longer than was anticipated we are happy with the quality of the finished product.
Elite Contracting Group LTD
No reviews yet
Extension Builder in Kings Cross
Transforming Spaces with Exceptional Decoration Works. With over 35 years of experience, Elite Contracting Group ensures the delivery of premium-quality finishes, with relentless attention to detail and reliable adherence to timelines. From designing possibilities to building realities, we work towards elevating interiors and exteriors and transforming your project into an exceptional work of art. Ultimately, we are devoted to the realization of your vision, as our mission is your satisfaction.
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One Take Solutions Ltd
Rating: 5 out of 5
Extension Builder in Kings Cross
Experienced plumber and handyman. Happy to provide fixed price, guaranteed work for tenants and homeowners alike.
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Latest review:
Plumbing- 4 Aug 2018
Able to fit an outside tap for us quickly and finished to a high standard. Very professional and passionate about the job. Also took a look at another plumbing issue we had and gave us an honest reply on what our best options were.

4.3

Top rated Extension Builders

Our Extension Builders in Kings Cross, are rated 4.3 out of 5 based on 18 reviews from customers like you.

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

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 Kings Cross 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 Kings Cross who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Kings Cross?

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

Find extension builders in Kings Cross with MyBuilder

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

Step 2: Compare different extension builders in Kings Cross

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

Step 3: Hire Kings Cross extension builders with confidence

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

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

What to ask a Kings Cross extension builder before hiring?

Before hiring an extension builder in Kings Cross or extension building company in Kings Cross, 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 Kings Cross?

An extension builder in Kings Cross 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 Kings Cross 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 Kings Cross?

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 Kings Cross 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 Kings Cross 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 Kings Cross

Can an extension builder in Kings Cross help with planning permission?

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

Many Kings Cross 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 Kings Cross help with materials and finishes?

Yes, most extension builders in Kings Cross 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.