Extension Builders in Knightsbridge

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (20 reviews)

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Some of our top rated extension builders in Knightsbridge

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StructurAll Ltd
No reviews yet
Extension Builder in Knightsbridge
We started our company as an engineering consultancy. We developed over the years to provide in-house architectural services, interior design, structural design, project management and asset management capabilities. We believe in client service and support throughout the life of a project, rather than just providing a design solution. So we have gained a reputation of being a one-stop-shop amongst our clients; who include private individuals, contractors, and local authorities.
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HWB construction
Rating: 5 out of 5
Extension Builder in Knightsbridge
Our executive team's come from diverse backgrounds such as design, engineering and management. Dedicated and focused, our vision has always been to be a dynamic and innovative organisation. The joint experience of our executive team is well over 20 years and provides us and our partners with a significant level of expertise which is applied to each project. HWB’s unique approach means we can be flexible and bespoke in all we do when delivering excellence in the construction industry.
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Latest review:
Extensions- 28 Oct 2018
We appointed HWB to carry out a full refurbishment on our house, this involved re-gutting the interior and building an extension and loft conversion plus some landscaping in the garden. We spoke to many builders but finally appointed HWB based on their previous projects and professionalism. Appointing builders for any work is always difficult however we are delighted that we went with HWB. Throughout the project they have demonstrated high levels of professionalism, were very organised and worked to very high standards. They were collaborative throughout the whole project and kept us informed at every stage. As the project developed there were some changes made and HWB were flexible and open to new instructions made by us, as well as giving us valuable advice. Farag, Ayoub and the HWB team were always available to answer any questions and provided us with constant feedback on progress as well as identify new solutions to aid the development. They have a great team of workers who work to a high standard and are supervised throughout the project. We made the right decision going with HWB Construction and have no hesitation in recommending them.
Bricklayer
No reviews yet
Extension Builder in Knightsbridge
Brikwork, Blockwork, extension,garden wall ,stonework
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Griffithstown Group
No reviews yet
Extension Builder in Knightsbridge
Time served builder who takes on general building works
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Sandhya Mahadevan
No reviews yet
Extension Builder in Knightsbridge
I am a Structural Engineer with experience delivering structural design for residential and commercial projects. I specialise in alterations to existing buildings, including wall removals, loft conversions, extensions, and steel and timber design. I provide clear calculations, drawings, and practical solutions that meet Building Regulations and site constraints.
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DRS construction
Rating: 5 out of 5
Extension Builder in Knightsbridge
we are builders who construct the dreams of others. we have the experiece as cscs skill worker about 5 years now doing our own work contact us if you want to get good work experience
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Latest review:
Plastering- 23 Sep 2025
These guys are superb. Came to look at the job, quote & arrange a start date. Friendly and polite at all times. Knowledgeable about best techniques to use. Arrived early, worked till late to get the job done in good time and to great standard. Kept to their quoted price. Highly recommend
Solid Structures & Maintenance
Rating: 5 out of 5
Extension Builder in Knightsbridge
Solid Structures & Maintenance LTD At Solid Structures & Maintenance LTD, we pride ourselves on delivering high-quality building and refurbishment services across London and the surrounding areas. With years of hands-on experience in the construction industry, we specialise in: • Home Extensions & Loft Conversions • Full Renovations & Refurbishments • Kitchens & Bathrooms (design, supply & installation) • Roofing & Structural Works • Plastering, Flooring & Carpentry • General Maintenance & Repairs We manage projects from design to completion, offering reliable workmanship, clear communication, and a professional finish every time. Our team works to the highest standards, ensuring that every project is completed on time and within budget. ✅ Fully insured ✅ Workmanship guarantee ✅ Transparent stage payment plans ✅ Friendly, reliable team Whether you’re planning a full property refurbishment, an extension to create more space, or simply updating your interiors, Solid Structures & Maintenance LTD is here to bring your vision to life.
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Latest review:
Conversions - General- 11 Oct 2025
All good. Competent and helpful. Will be working with Andy and his men again. Highly recommended. From: The LR Group.
STYLEZING UK LTD
No reviews yet
Extension Builder in Knightsbridge
Transform Your Home with STYLEZING Construction Company – Experts in House Conversions--------- At STYLEZING Construction Company, we bring over 10 years of expertise in transforming unused spaces into beautiful, functional areas. Whether you're looking to convert a loft, garage, or make other structural changes, our skilled team is here to help you achieve your vision. Where We Work: We proudly serve clients across London, the South East, and surrounding areas. We’re also happy to travel further for larger projects, ensuring that your dream conversion is within reach, no matter where you are. Why Choose Us? • Experience You Can Trust: • Specialist Skills: • Tailored Solutions: Why Hire Us? At STYLEZING Construction Company, we focus on quality, clear communication, and timely delivery. Our commitment to customer satisfaction, attention to detail, and transparent pricing makes us the ideal choice for your conversion project. Contact us today for a free consultation and see how we can transform your space!
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Serg Build
Rating: 4.7 out of 5
Extension Builder in Knightsbridge
Customer friendly, professional building service. Works covering:extensions, loft conversion, complete house renovation, kitchen and bathroom fitting, flooring. Great attention to detail to building process as well as design and planning. Don't hesitate to contact for a free quotation.
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Latest review:
Kitchen Fitting- 23 Aug 2021
Great service, went above and beyond to help us finish the job.
Gibbons & Sons
Rating: 5 out of 5
Extension Builder in Knightsbridge
Gibbons & Sons are a family run business and been trading for 30 years. Our areas of business are extensions, kitchen fits, summer houses, loft conversions & general building.
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Latest review:
Extensions- 24 Jan 2021
We chose Gibbons and Sons for our Loft extension and new bathroom as they was one of the few firms who we contacted and was more then happy for us to view their workmanship during and after the build so we good see the quality of their works. They have been courteous, polite, very patient and accommodating to our chopping and changing of ideas. They helped us to bring our visions to life and offered advice when required without being pushy and driving a hard sale. They have been open and honest with our ideas and their recommendations and in some cases suggested a alternative more cost effective option. All in all we would highly recommend Gibbons and Sons for all types of building works.
MARCIN'S CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Knightsbridge
Marcin’s Construction LTD is a professional building and refurbishment company delivering high-quality residential renovation services across London and surrounding areas. We specialise in full property refurbishments, kitchen and bathroom renovations, and interior works. Our focus is on clear communication, detailed written quotations and a clean, well-organised finish on every project. With over 10 years of experience, we work with homeowners, landlords and property investors, providing a structured and reliable service from initial discussion to project completion. Every job is carefully planned, carried out efficiently and completed to a high standard. Additional information about our work and recent projects is available on our company website.
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Latest review:
Extensions- 7 Oct 2025
I cannot recommend Marcin and his men more. They were immensely helpful throughout a difficult (due to my inexperience and space and budget constraints) and rushed project. They worked to my budget and schedule and delivered to high quality - really an unbelievable job. If you choose them, you are in good hands. They are honest, reliable, and trustworthy.
Onyx Interiors London Ltd
No reviews yet
Extension Builder in Knightsbridge
Onyx Interiors London (OIL), is an all-inclusive creative platform dedicated to private clients, property investors and developers, who require a specialized or ongoing service designed to their specific needs.
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FIXiiT
Rating: 5 out of 5
Extension Builder in Knightsbridge
Hi, I normally undertake all types of handy man services such as; Painting & Decorating Window Cleaning Furniture Assembling Removals Landscaping Wood Flooring Electrical services and many more…
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Latest review:
Handyman- 28 Oct 2023
Did a great job. Was punctual, patient and organised. Work was of great quality. Would recommend him
Tecktōn Consulting
No reviews yet
Extension Builder in Knightsbridge
Helllo I am a kiwi builder that has moved to London with 10 plus years of experience. I've spent my time building decks/fences to multi-million dollar homes. I am a fully NZ qualified level 4 Carpenter. The capability to do foundations first fix, second fix decks etc. I would be very excited to have the opportunity to take on your project Kind regards Dj Tecktōn Consulting
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Elite-Builders
No reviews yet
Extension Builder in Knightsbridge
Elite-Builders a family run firm with over 30 Years experience in the industry
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a-z renovations and construction
No reviews yet
Extension Builder in Knightsbridge
My name is Avni, Our company is called 'a-z renovations & construction' we take all different kind of projects whether they are small or big. all of our jobs are mainly recommended. our jobs are: Extensions, loft conversions, mezzanine floors, plastering and plumbing, wall & floor tiling, painting and decorating, kitchen and bathroom fitting, carpentry, patio and garden fixing. we cover London and home counties.
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4.2

Top rated Extension Builders

Our Extension Builders in Knightsbridge, are rated 4.2 out of 5 based on 20 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.