Extension Builders in Kensington, West London

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 Kensington, West London

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Taiz Builders
No reviews yet
Extension Builder in Kensington, West London
**🔨🏡 “Your Dream Home, Our Expert Hands!” 🏡🔨** Looking for top-notch craftsmanship that’ll make your home the envy of the neighborhood? You’ve come to the right place! 💪✨ we don’t just build – we **create magic**! From stunning bathrooms that feel like **luxury spas** 🛁 to flawless tiling, plumbing, and renovations that’ll make your jaw drop, we bring **passion, precision, and a whole lot of elbow grease** to every job. ✅ **Reliable & Punctual** – We show up on time, every time! ✅ **Top-Quality Work** – Because you deserve nothing but the best! ✅ **No Mess, No Stress** – We leave your space **sparkling clean**! ✅ **Affordable Prices** – Luxury look without the luxury price tag! Why settle for **ordinary** when you can have **extraordinary**? Call us today, and let’s turn your vision into **reality**! 🔧✨
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LondoNest Ltd
Rating: 5 out of 5
Extension Builder in Kensington, West London
Londonest is a London-based building company specialising in high-quality residential construction and renovation. We provide reliable and professional services including house extensions, loft conversions, full property refurbishments, kitchen and bathroom renovations, and general building works. Our team combines strong technical expertise with attention to detail to deliver projects that meet the highest standards of quality and safety. We work closely with our clients from the initial consultation through to completion to ensure every project is delivered on time, within budget, and to the client’s satisfaction. At Londonest, we pride ourselves on clear communication, transparency, and a commitment to excellent workmanship.
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Latest review:
We hired this builder for a 2-metre rear extension and a very large garage extension and we’re really happy with the result. The project needed a pile foundation which is a bit more complicated, but they handled everything very professionally. They listened to what we wanted and kept us informed at every stage, which really helped as we were living in the house while the work was being done. The team were friendly, easy to deal with and worked to a good standard. Overall a very good experience and we would happily recommend them.
Don Buildings Ltd
Rating: 4.9 out of 5
Extension Builder in Kensington, West London
Don Buildings Ltd Client satisfaction is our primary concern and goal. If you are looking for top quality efficient and professional service, so look no further Don Buildings Ltd is here for you For and on behalf of Don Buildings Ltd, Donatas
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Latest review:
Extensions- 27 Apr 2024
Super professional job, clean and efficient.
Buildleader
Rating: 5 out of 5
Extension Builder in Kensington, West London
Our home refurbishment company BUILDLEADER is based in London. We offer full house renovation requiring extensive electrical, plumbing and structural work. All of our tradesman are professionals with over 15 years of experience who get the job done on time, on budget, and to the highest standard. We handle every project with the utmost competence and respect.
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Latest review:
Bathroom Fitting- 28 Mar 2022
Good plumber, call them in for shower replacement
Organisedproperty.ltd
No reviews yet
Extension Builder in Kensington, West London
We have extensive experience in construction for over 15 years, many satisfied customers with our work, the last projects we did were the Osterley and Isleworth areas. We provide a free assessment of your work, our employees are certified according to British standards, we guarantee quality work for one year. Our company motto is, if you pay, we work.
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Venher Limited
Rating: 5 out of 5
Extension Builder in Kensington, West London
We can undertake all your heating works as we are Gas Safe registered our service provides the safest solutions and the highest quality standard of work. Our heating & gas services include: • Gas and Central Heating Installation • Gas Safe Registered • Landlord Gas Safety Checks • Boiler Installation, Repair and Service • Gas Cooker and Fire Installation, Service and Replacement • Safe Capping Off of Unused Gas Pipework • Radiator Installation, Relocation, Repair • Thermostats and Smart Thermostats Installed and Replaced • Bathroom and Wet Room fitting • Pipework Replacement, Lead Pipework Removed and Replaced • Leak Detection
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Latest review:
Gas Work- 3 May 2026
Very professional, thorough with good communication. Explained the job. There was a slight increase in initial work, which did incur an additional cost but it was explained clearly by him. Would definitely recommend and use again
ara design
No reviews yet
Extension Builder in Kensington, West London
We are a team of specialists consisting of architectural consultant, interior designer, project manager, joiner, wall finishing specialist and stone layer. Our strenghts lay in creativity, space planning, experience and attention to detail.
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Grand Finish Ltd
No reviews yet
Extension Builder in Kensington, West London
With many years experience, we will ensure that we deliver your project on time and within budget, however large or small. Whether you require a minor or major extension, refurbishments or renovations, we will design, plan and implement the whole project. We cover all the local areas and offer services for all your building needs.
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DMurphy Construction
No reviews yet
Extension Builder in Kensington, West London
I have been working in the construction industry for 20 years now. During my time in the industry I have gained a lot of experience from all types of projects .. I specialise in basements, loft conversions, extensions, refurbishments & shop fitting. I have a great team of fully certified tradesmen & have references from of list of happy clients.
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PRT London ltd
Rating: 5 out of 5
Extension Builder in Kensington, West London
Hard working, easy going. I like to give the customer respect and honesty as I would like the same in return. I am a very good timekeeper and i like to give my client 100% committment to any contract,let alone what the value is.
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Latest review:
Carpentry- 19 Apr 2012
It was an absolute pleasure having Danny round to fit our new Front Door. He arrived promptly, worked extremely hard and completely the job to a very high standard. He always works with a smile on his face and is an extremely amiable person. You will not be disappointed if you hire him for the job and I'll certainly be using him again in the future.
R&R Renovation
Rating: 5 out of 5
Extension Builder in Kensington, West London
R&R Renovations Ltd – Trusted Local Builder in your area, Specialising in: Driveways, Extensions, Porches, Garage Conversions & Landscaping. ✅ 10+ years experience delivering high-quality results ✅ Fully insured and compliant with UK building regulations ✅ Professional finish, on time and on budget Contact us today for a free consultation and quote
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Latest review:
Decking- 14 Jun 2026
Replaced old decking with composite decking. Very precise and great job
Nour Nagy Designs Ltd
No reviews yet
Extension Builder in Kensington, West London
We are a London-based construction and renovation company with strong experience in both interior design and on-site construction delivery. We specialise in home refurbishments, extensions, loft conversions, and full internal fit-out works. What sets us apart is that we don’t just build — we design and plan interiors as part of the process, helping clients make the best use of their space in terms of layout, finishes, lighting, and functionality before work starts. We work across London and surrounding areas and manage projects from initial design coordination through to construction and final handover. Our skills include structural alterations, partitions, flooring, plastering, joinery, kitchens, bathrooms, lighting layouts, and full interior finishes. Clients choose us for our attention to detail, clear communication, and organised approach. Having both design and construction experience allows us to avoid mistakes, control costs, and deliver clean, high-quality results that match the agreed vision.
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Perparim
Rating: 5 out of 5
Extension Builder in Kensington, West London
An established bricklaying business offering all aspects of bricklaying services in and around London and the south east areas. We are reliable,friendly, professionals that take pride in our work and guarantee jobs to the highest standards
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Latest review:
Great work, good communication skills very happy with the service Job got completed on the promised timescale
Spoonerbrothers London
Rating: 5 out of 5
Extension Builder in Kensington, West London
Spooner Brothers London has 20 years of building experience We have a good reputation for customer service, many of our leads are recommendation, with competitive prices & a high standard of workmanship. We specialise in orangeries, conservatories, porches, Skypods, windows, doors & bi-folds ! We are Certass fenestration registered, so all work comes with a building compliant certificate and an insurance backed guarantee See our brochures on the Spooner brothers london website
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Latest review:
Windows & Doors (uPVC & Metal)- 29 Jan 2024
John did a fantastic job of replacing a large sash window in our kitchen. He was easy to work with, and was very clean and tidy with the job. On top of that the price was very fair, particularly for the calibre of work completed. Would recommend!!
Home Comfort Design & Build Ltd
Rating: 4.9 out of 5
Extension Builder in Kensington, West London
Home Comfort Design and Build Ltd have many years’ experience in both commercial and private property renovations specializing in Extensions, House refurbishment, Loft and Garage conversions, Driveways and Patios. We offer a full range of services from Architectural and Structural design to dealing with Council planning applications. Please get in touch for a friendly free-of-charge no obligation consultation. Many thanks, Graham
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Latest review:
Bathroom Fitting- 14 Nov 2019
We had our bathroom completely refurbished and Graham the owner was lovely. He came to give us the quote, visited whilst work was being undertaken to make sure everything was okay and came to make sure everything was finished to how we wanted it. The work carried out was of a high standard and whilst the bathroom work was being completed we also ended up getting our kitchen worktops done by Graham’s team. Chris was the one who carried out our work, he was very friendly and checked we were happy with the work he’d done before he left everyday. I would use Graham again for other work needed around the house.
GRAM SERVICES LTD
No reviews yet
Extension Builder in Kensington, West London
We take expertise in extensions together with lofts and property refurbishments from the pre-construction phase all throughout to the post-construction phase.
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4.2

Top rated Extension Builders

Our Extension Builders in Kensington, West London, are rated 4.2 out of 5 based on 20 reviews from customers like you.

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What types of services are offered by local extension builders in Kensington, West London?

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 Kensington, West London 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 Kensington, West London who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Kensington, West London?

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

Find extension builders in Kensington, West London with MyBuilder

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

Step 2: Compare different extension builders in Kensington, West London

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

Step 3: Hire Kensington, West London extension builders with confidence

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

Kensington, West London extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Kensington, West London extension builder before hiring?

Before hiring an extension builder in Kensington, West London or extension building company in Kensington, West London, 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 Kensington, West London?

An extension builder in Kensington, West London 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 Kensington, West London 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 Kensington, West London?

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 Kensington, West London 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 Kensington, West London 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 Kensington, West London

Can an extension builder in Kensington, West London help with planning permission?

Yes, many extension builders in Kensington, West London 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 Kensington, West London handle everything from design to construction?

Many Kensington, West London 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 Kensington, West London help with materials and finishes?

Yes, most extension builders in Kensington, West London 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.