Extension Builders in St Johns Wood

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 reviews)

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Some of our top rated extension builders in St Johns Wood

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Arcadia Construction and Security Limited
No reviews yet
Extension Builder in St Johns Wood
Our success comes from over 20 years of experience in delivering quality tradesmanship on timely basis, with our management skill sets ensuring best performance and economies. Our goal is client’s ultimate satisfaction and loyalty. We offer house extensions, loft conversions, interior/exterior refurbishments, bathroom/kitchen renovation, tiling, decorating, carpentry, joinery, landscaping, bricklaying, paving, plastering, rendering and roofing. Security systems installation, CCTV & alarms.
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vio
No reviews yet
Extension Builder in St Johns Wood
General builder
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Crimson Design & Build Ltd
Rating: 5 out of 5
Extension Builder in St Johns Wood
As a contractor I've been in the building business for five years now and my reputation is growing from strength to strength. So far all my jobs have been referrals from previous customers. I've expanded my team and they all know meeting customers's expectations is number 1 priority.
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Latest review:
Firoj and his team renovated a bathroom for me in March 2015. He gave me a fixed cost for his labour and what turned out to be a very accurate estimated cost for all the parts/materials at the outset. He also gave me a completion time of 9 days with 1 extra day for 'spillovers' and 'unforseen delays'. He finished the job at exactly 9 days and still came around on the 10th day to see how everything was working. The quality of his work was excellent, to say the least. He attention to detail was admirable, as was his commitment to delivering a finished product that would last several years. This focus on detail and longevity is something that really sets Firoj apart from other builders, who often see such jobs as just another task to be completed before moving onto the next job. I have no hesitation in recommending him. Several months later my bathroom still looks great and everything works.
Joe Louis Building LTD
New on MyBuilder
Extension Builder in St Johns Wood
We are making the world a better place.
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TerraMax Ground Work
Rating: 5 out of 5
Extension Builder in St Johns Wood
TerraMax it’s specialised in all sorts of ground works and we have our own machinery mini digger, dumper and piling machine etc . - standard foundations - piled foundations - block and beam foundations - drainage installation - driveways - patios - landscape
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Latest review:
I was recommended George via a family member that had there drive built. I was very impressed by the work that was done and had made up my mind there and then that George would build My drive. It was built exactly the way I wanted it without any hassle and stress. The work George does is amazing and with great care and very important a clean job. If your looking for great results without any stress then George and his team are for you.
ROYAL SEED & CROWN
New on MyBuilder
Extension Builder in St Johns Wood
ROYAL SEED & CROWN provides reliable landscaping and outdoor improvement services designed to transform gardens into beautiful, practical spaces. Our work includes complete garden landscaping, turf and lawn installation, paving, patio and tile work, bricklaying, sandstone features, shed bases, fencing, raised beds, planting and garden maintenance. We also create outdoor kitchen areas, paths, borders and stylish seating spaces to suit different properties and requirements. From refreshing an existing garden to creating a completely new outdoor setting, we focus on neat workmanship, strong materials and thoughtful designs. Our aim is to deliver attractive, long-lasting outdoor spaces that homeowners can enjoy throughout the year.
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Court's Home Extensions
Rating: 1 out of 5
Extension Builder in St Johns Wood
With nearly 20 years experience i joined the building trade at 16, going into bricklaying very soon after. I have worked for 4 very well known east London extension company and have built an excellent portfolio through customer recommendation. I have accumulated an excellent team of tradesmen ensuring consistent high standard finishes
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Latest review:
Extensions- 17 Jan 2018
A Total disappointment Ricky agreed to install a porch and roofing. He advised us to install new pvc doors agreeing to fit the roof after. This started mid November with a promise to be completed before Christmas. On his instruction we paid other workers to complete the preparation works and then the morning of the Job he sent a text message advising that he will no longer be able to attend the job. Thankfully we were able to find a local reputable roofer -plasterer-tiler who completed the work to a very high standard I feel very let down as I had put total trust in his promise to complete the work. Unfortunately based on this I cannot confidently recommend Ricky to a friend family, or anyone else.
Atika
No reviews yet
Extension Builder in St Johns Wood
As the Director of our Family business Atika Construction, I have been in the Building industry for over 8 years and was trained by a contractor who had over 25 years experience. I also have past experience in the carpentry trade. Myself and my partner have undertaken all different types of building and landscaping work.
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Roberts Plastering Services
Rating: 5 out of 5
Extension Builder in St Johns Wood
Hello everyone! My name is Robert, of Roberts Plastering Services LTD. We started by undertaking plastering, rendering and screeding works. Then, as the team increased, we undertake buliding projects as extensions and loft conversions. We focus on the high quality of the works as well as on the customer services provided. We provide quotes and advice for free and we are prepared to travel the extra mile to get the job done: friendly, on time and at high standard! Thank you!
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Latest review:
Extensions- 8 Nov 2019
Robert & Bobby did a great job for us! They've been honest, precise and patient. When we had unexpected situations on site they helped us to solve them professionally and in good time. They went the extra mile when we had a need, they were able to advise us and help us with our decisions as well. I lived in the house while they were working and they have always been careful in minimizing all the disruptions for myself and for my family. The extension that they built for us looks beautiful! I would definitely recommend them to others and personally I will try to work with them again in the future whenever I'll have a need. Thank you guys!
JC Group Property Sevices LTD
Rating: 5 out of 5
Extension Builder in St Johns Wood
JC Group Ltd is a reliable and experienced building company offering bathroom installations, plumbing, home extensions, and general building works. With over 30 years of combined industry experience, we take pride in delivering high-quality workmanship, clear communication, and projects completed on time and within budget. We are committed to customer satisfaction and maintaining the highest standards on every job, no matter the size.
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Latest review:
We’re absolutely delighted with the extension and the overall experience from start to finish. The workmanship is to a very high standard, and everything was completed professionally and on schedule. Communication throughout the project was excellent, and we were kept informed at every stage. The team were reliable, tidy, and respectful of our home, and the finished extension has exceeded our expectations. We wouldn’t hesitate to recommend them to anyone looking for quality work and a stress-free build.
Silver Prism Construction ltd
No reviews yet
Extension Builder in St Johns Wood
I.am dedicate to make great work ,always ready to satisfy client to meet their goal., With an experience gain during a lot of project,I wish to share this with new clients project.
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S.U. Construction LTD
No reviews yet
Extension Builder in St Johns Wood
Here at S.U Construction Ltd we cover all aspects of Property Refurbishment in Greater London and surrounding areas. We offer the highest quality services so that our customers are fully satisfied and happy with the work completed. Our well established business has been built on the foundation of providing 100% customer satisfaction with the goal of turning your dreams into reality. Renovations Interior/ Exterior Decorating Bathroom Refurbishment Kitchen Fitting Painting Extensions Loft conversions Tiling Flooring Plastering Partition Walls Damp Proofing Please get in touch for a free no obligation quote and a competitive price. Our friendly team are more than happy to answer any queries you may have.
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J&M development
No reviews yet
Extension Builder in St Johns Wood
Hi my name is Magar Singh and I have proper registered company and I am proper builder any kind a refurbishment new making extensions houses anything if interested you
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True North Solutions
No reviews yet
Extension Builder in St Johns Wood
True North Solutions is a family-owned business with years of experience in home improvement and repairs. We specialise in bricklaying, offering high-quality work for everything from walls and patios to custom brick structures. At True North Solutions, we focus on providing reliable, long-lasting solutions tailored to each client’s needs. With a strong commitment to quality and attention to detail, we make sure every project is completed to the highest standard, adding lasting value to your home.
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Singhd Limited
No reviews yet
Extension Builder in St Johns Wood
SinghD Limited is a residential and commercial building company, undertaking all building, renovating and decorating jobs. We work to the highest standards with customer focus at the forefront of all projects. Our experienced team is dedicated to delivering high quality work and ensuring customer satisfaction.
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Ervis
Rating: 5 out of 5
Extension Builder in St Johns Wood
We take on all kind of work that you need to do. We have been doing this for almost 8 years. We even do foundations digging muck away etc. Please do contact us for any further information we more then happy to answer.
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Latest review:
Handyman- 22 Dec 2025
Was very quick to respond and complete this job 3 hours later. To a high standard.

4.1

Top rated Extension Builders

Our Extension Builders in St Johns Wood, are rated 4.1 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 St Johns Wood?

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 St Johns Wood 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 St Johns Wood who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in St Johns Wood?

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

Find extension builders in St Johns Wood with MyBuilder

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

Step 2: Compare different extension builders in St Johns Wood

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

Step 3: Hire St Johns Wood extension builders with confidence

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

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

What to ask a St Johns Wood extension builder before hiring?

Before hiring an extension builder in St Johns Wood or extension building company in St Johns Wood, 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 St Johns Wood?

An extension builder in St Johns Wood 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 St Johns Wood 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 St Johns Wood?

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 St Johns Wood 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 St Johns Wood 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 St Johns Wood

Can an extension builder in St Johns Wood help with planning permission?

Yes, many extension builders in St Johns Wood 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 St Johns Wood handle everything from design to construction?

Many St Johns Wood 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 St Johns Wood help with materials and finishes?

Yes, most extension builders in St Johns Wood 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.