Extension Builders in Knightsbridge

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (19 reviews)

Easily find verified Knightsbridge Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Knightsbridge.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Knightsbridge

3609 Results

Sort by:

ISTOK Construction Services
Rating: 5 out of 5
Extension Builder in Knightsbridge
ISTOK Construction Services is London's local construction company. Every loft conversion, every extension and every redecoration or refurbishment is fully executed to your specification, helping you to create the most space out of your home. We specialise in a wide variety of bespoke home improvement projects; designed to expand your space and breathe new life into your home, inside and out. We offer a very fast and reliable service with very competitive prices.
Get in touch
Latest review:
Bathroom Fitting- 24 Sep 2018
Vlad and his team were great. They worked hard and the bathroom looks perfect. Would highly recommend.
KBS London Ltd
Rating: 5 out of 5
Extension Builder in Knightsbridge
We are a North London Carpentry and General building company. I am a Qualified Carpenter from New Zealand, I have 30 years experience with 20 in London. We can carry out all works on residential, retail and commercial projects, from strip out to completion. We have a network of tried and proven tradesmen and suppliers. We are Quick Clean happy to work out of hours if necessary. I will do you a free quotation and happy to discuss works and guide you if necessary. Karl
Get in touch
Latest review:
Carpentry- 8 Jun 2026
Responsive and good communication - delivered the job as planned and quoted. Would recommend.
KG BUILD
Rating: 5 out of 5
Extension Builder in Knightsbridge
With your specifications and our expertise, we happily take on any building work and produce excellent results. Extensions, Loft conversions, kitchens, bathrooms, garden rooms/studios/outbuildings, roofing, flooring, carpentry and joinery etc
Get in touch
Latest review:
Carpentry- 13 Dec 2025
Kwame did a great job and was thoughtful, communicative and very skilled with the work he was carrying out on our joists. I would recommend KG build to anyone looking for a good price and a high standard of work.
ABETA GROUP LIMITED
Rating: 5 out of 5
Extension Builder in Knightsbridge
ABETA GROUP LIMITED covers a wide range of construction services offered by our team of professionals.
Get in touch
Latest review:
Kitchen Fitting- 30 Nov 2020
Aurenc was very helpful and accommodating. The work was well done. All the persons were respectful and clean.
Be-Studio Ltd
Rating: 5 out of 5
Extension Builder in Knightsbridge
bé-studio is an award-winning interior design practice specializing in contemporary residential and commercial projects. We collaborate with a broad range of professionals to bring diverse projects to life, no matter the size, no matter the scope. Services Provided Architectural Design,Home Renovation, Interior Design, House Extension, Kitchen Design, Garden Design, Living Room Design, Home Extensions, House Plans, Complete Bathroom Renovation, Design & Build
Get in touch
Latest review:
Bilal and his team designed the plans for the extension of the ground floor of our house. He invested time in understanding our ideas and needs, and translated them into something that is both inspiring and practical. They provided amazing visualizations for us to imagine the final look.I recommend Bilal and his colleagues for a hassle free and highly professional service.
Craft of London Ltd
Rating: 5 out of 5
Extension Builder in Knightsbridge
Craft of London are an established building company, specialising in design and build projects, creating bespoke interiors and homes. Our workmanship is of the best standard in London for either small, medium or grand designs.
Get in touch
Latest review:
Extensions- 3 Sep 2013
Kel and his team worked on my single storey extension with bifold doors and glass roof. He also did some landscaping in my garden, replacing the fencing and installing a raised patio with cedar battens to the side. Overall I was very pleased with the work Kel did. He is a good communicator and frequently visited the site to keep on top of the work. Kel was happy to discuss requests and was flexible with design changes. The bulk of the work was completed on time with just some minor snags remaining, but the finish is excellent. It's been a long and stressful journey, but it's been easier with the friendly support and professional approach Kel has taken to his job. I'd be happy to recommend Craft of London and provide a reference on request.
CB brickwork
Rating: 5 out of 5
Extension Builder in Knightsbridge
Welcome to CB Brickwork. I’m Ciaran a bricklayer from Scotland and I moved to London 2 years ago. I’ve worked for large building companies for many years and now looking to take on projects with My Builder. I have an eye for detail and take pride in my work. Not to mention I am polite and courteous! I am happy to meet up and look at your project. I can also help you plan and create ideas for your dream design. Looking forward to chatting with you! Ciaran
Get in touch
Latest review:
Bricklaying- 17 Mar 2022
Ciaran did a great job with building our wall. Great communication throughout and always kept us in the loop. Good time keeping and kept the work area very clean and tidy. Would highly recommend.
SAABCO VENTURES Ltd
Rating: 4.7 out of 5
Extension Builder in Knightsbridge
Complete Home Improvement Service At SAABCO Design & Build we guarantee all of our work and can undertake all aspects of your home improvement project; from planning your home’s interior to creating stunning bathrooms and kitchens. A team ready to realise your dreams and design the home you’ve always wanted.
Get in touch
Latest review:
Carpentry- 22 Aug 2018
In the end, Saabco did a much larger job, decorating the entire flat. The quality was excellent and I couldn't fault them for professionalism. Definitely recommend.
30 Day Extensions Ltd
Rating: 4.8 out of 5
Extension Builder in Knightsbridge
COMPLETED 130 projects since lockdown•WIMBLEDON & SURBITON SHOPS now open. FREE- architectural and design services if you use us. •Fantastic reputation, reviews on google and webpage. • Speed, we build shell in 30 days. •priced by a QS and we add 15%. Simple! • •Highly skilled reputable teams. • Guarantees that mean something. • Peter snelson, the CEO has over 40 years experience in the industry internationally and nationally. A member of The Federation of Master Builders.
Get in touch
Latest review:
Extensions- 30 Nov 2020
A really excellent set up of builders. Peter was great in evaluating the work and what we needed done. Sue was clear in her communication on costs, and then execution of the works by Taras and his team was superb. The extension was built in fantastic time-frame, and the end result is great. The work-ethic of the builders is what really makes them so good. They are on-time every day, and relentless with working hard each day.
Klodi Construction
Rating: 4.5 out of 5
Extension Builder in Knightsbridge
We are a small construction partnership, specialising in: internal refurbishments, kitchens, bathrooms, rear and side extensions, loft extensions, general maintenance, joinery and decorating.
Get in touch
Latest review:
Handyman- 24 Sep 2025
I initially called Klodi to repair the kitchen stove extractor pipe, but after seeing their professionalism, I entrusted them with additional tasks, including painting the ceiling and walls in the kitchen and installing a brand new fire door. Throughout the project, they worked quickly and efficiently without compromising on quality. Their team was highly professional, friendly, and very communicative, always keeping me informed about what they were doing and explaining each step of the process clearly. I was impressed with their attention to detail and the care they took to ensure everything was perfect. The finished work transformed my kitchen, and I wouldn’t hesitate to recommend Klodi for any home improvement tasks. Their dedication to customer satisfaction truly stood out. I will definitely use them for more jobs and recommend them.
Florentin Stoica
Rating: 5 out of 5
Extension Builder in Knightsbridge
I charge 60£ for a home visit and quote. This is to cover for my time and the website fee attributed to each add. If the jobs goes trough, this cost will be included in the final price. Hi, I am Flo, your local handyman with a decade plus of experience. Putting up a frame or building up an house extension, I can accommodate both and everything in between. If you have a project in mind i have a decade plus of experience that could come in handy so let’s get in touch. Yours sincerely, Florentin.
Get in touch
Latest review:
Carpentry- 11 May 2026
Did a great job, would highly recommend
lnk.brickwork
Rating: 5 out of 5
Extension Builder in Knightsbridge
LNK brickwork professional team has over ten years of experience in London's construction industry, working with commercial and residential customers locally. Property extension, build a garden wall, need a paving job done or plan a new build, you can count on LNK BRICKWORK. Our commercial projects include new construction, repairs and restorations. We can also plan, manage, and build multi-phase jobs.
Get in touch
Latest review:
Bricklaying- 10 May 2019
Excellent work recently carried out to a very high standard. A very polite and professional team who delivered everything and more above my expectations. Would definitely recommend this company and use again.
We Fix Your House Ltd
Rating: 5 out of 5
Extension Builder in Knightsbridge
We Fix Your House is a family-run, small team of experienced industry specialists with many happy clients in and around London. We take pride in our work and ensure that our customers are always happy. So whether you're are looking for a little DIY help, or a complete renovation of your property, we're happy to help. You'll be pleasantly surprised by our competitive prices too, and YES, we can work around your budget.
Get in touch
Latest review:
Plastering- 28 Apr 2019
Great job, very professional
Sheila Build & Design Ltd
Rating: 4 out of 5
Extension Builder in Knightsbridge
SBD Contractors was established in 2022, with roots firmly anchored in the vibrant city Central London. We provide comprehensive services that extend across all areas of Greater London. Our forte lies in orchestrating a symphony of simplicity, adeptly navigating the intricacies of acquiring, planning, designing, building, and harmoniously managing your properties. We specialise in transforming complexity into effortlessly straightforward processes, ensuring a uniquely smooth and tailored experience for you. Founded with the vision of offering clients a lifelong point of contact, we guarantee a simple journey and all the associated benefits throughout your property development and real estate experience. Our solutions redefine industry standards in property development, with a primary goal of simplifying the process for our clients. We ensure a hassle-free experience that saves you both time and money.
Get in touch
Latest review:
Painting & Decorating- 9 Aug 2024
Sheila was very professional and she recommended a professional floor specialist part of her team who did a wonderful job. Will definitely use her services in the future!
JDS Maintenance
Rating: 5 out of 5
Extension Builder in Knightsbridge
Hi there, I am a Handyman, I got recomendations for my customers. Thanks a lot.
Get in touch
Latest review:
Kitchen Fitting- 4 Apr 2025
Super professional, job completed properly. He is extremely knowledgable Would reccomend
S & S Builders
Rating: 5 out of 5
Extension Builder in Knightsbridge
Hi my name is Stephen and I have 30 years building experience specialising in extensions and loft conversions I do 1 job at a time and I am on site every day. I have extensive knowledge of structural engineering I also carry building insurance .and i am a member of the National federation of builders.
Get in touch
Latest review:
Extensions- 18 Jun 2025
Steve and his team were excellent throughout. Turned up on time every day, very reliable. Excellent attention to detail and great pride in their work. All areas of building work undertaken to a very professional standard. We had new bathroom fitted, new fence and handmade shed, lean-to rebuilt from scratch with new roof, patio doors, new flooring, plastering, outside patio. Very happy with the work. Good value for money. Highly recommended would use again without hesitation.

4.4

Top rated Extension Builders

Our Extension Builders in Knightsbridge, are rated 4.4 out of 5 based on 19 reviews from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

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

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

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

What are the hourly rates of extension builders in Knightsbridge?

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

Find extension builders in Knightsbridge with MyBuilder

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

Step 2: Compare different extension builders in Knightsbridge

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

Step 3: Hire Knightsbridge extension builders with confidence

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

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

What to ask a Knightsbridge extension builder before hiring?

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

An extension builder in Knightsbridge 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 Knightsbridge 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 Knightsbridge?

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 Knightsbridge 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 Knightsbridge 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 Knightsbridge

Can an extension builder in Knightsbridge help with planning permission?

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

Many Knightsbridge 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 Knightsbridge help with materials and finishes?

Yes, most extension builders in Knightsbridge 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.