Extension Builders in Isleworth

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 Isleworth

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Premier Bricklaying Services
No reviews yet
Extension Builder in Isleworth
Welcome to Premier Bricklaying Services! My name is Gojart, and I proudly run Premier Bricklaying Services with over 8 years of experience in bricklaying. I lead a small team of skilled bricklayers, personally overseeing and executing all projects to ensure our clients receive the best possible service. We specialize in a variety of services, including: -Extensions -New build - Brickwork & blockwork extensions - Garden walls - Pointing - Brickwork repairs and restoration - Structural repairs - Paving - Fencing - Gutter replacement Each project is completed to the highest standards, reflecting our commitment to excellence and customer satisfaction. If you have any questions or need further information about our services, please feel free to contact us. Thank you, Gojart Premier Bricklaying Services
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Sandhay Constructions
Rating: 1 out of 5
Extension Builder in Isleworth
Sandhay Constructions Ltd. is a premier construction company known for delivering high-quality residential, commercial, and infrastructure projects. With decades of combined experience and a strong foundation in craftsmanship, integrity, and professionalism, we turn complex visions into enduring structures that stand the test of time. What truly sets us apart? At Sandhay Constructions Ltd., our Director personally oversees every project. This level of leadership involvement ensures not only accountability but also consistent quality, timely execution, and open communication at every stage of the build. ** FULLY INSURED & CERTIFIED CONTRACTOR WITH OVER 25 YEARS INDUSTRY EXPERIENCE **
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Latest review:
Plumbing- 15 Nov 2025
Incompetent company. They were contracted to put a new shower cubicle in one bathroom and regrout and make good and regrout in another bathroom. This company are completely incompetent. We had to take out all of the grouting that they did as it was so poor and all of the sealant. It was clear that they had no experience of fitting bathrooms or tiling at all. They did not even seal the sides of the shower unit against the walls, so water would be able to run right out of the shower cubicle. They did not connect the waste pipe and water came straight through the ceiling. I would not recommend this company to do any work.
Era Construction Solutions Ltd
No reviews yet
Extension Builder in Isleworth
🏗️ Welcome to ERA Construction Solutions – a trusted family business with years of experience delivering high-quality building services across London. ✨ We specialise in: • 🏠 House Extensions & Loft Conversions • 🛁 Bathroom Renovations • 🏡 Full Home Renovations • 🧱 Plastering, Tiling & More 🔑 Why choose us? • ✅ Fully Certified & Fully Insured – your home is in safe hands • ✅ All Work Guaranteed – we stand by the quality we deliver • ✅ Reliable & Professional Team – from planning to completion • ✅ 65+ ⭐ Google Reviews – proof of happy customers and excellent service At ERA Construction Solutions, we combine craftsmanship, reliability and clear communication. Whether it’s a small project or a complete house transformation, we approach every job with the same dedication to quality. 📞 Get in touch today – let’s bring your vision to life with trust, quality and care.
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Majestic Builders LTD
Rating: 5 out of 5
Extension Builder in Isleworth
Majestic Builders LTD, we’re a friendly, reliable construction company providing all types of general building work for homes and properties. From small repairs and renovations to full home extensions and new builds, we take pride in doing the job right — safely, neatly, and to a high standard. Our team covers all aspects of residential construction, including brickwork, plastering, roofing, tiling, carpentry, and more. We believe in honest communication, fair pricing, and quality workmanship that lasts. Whether you’re improving your home or starting something new, Majestic Builders LTD is here to help make your project simple, stress-free, and built with care.
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Latest review:
Tiling- 22 Jun 2026
Majestic Builders Ltd delivered an outstanding job on our new bathroom and kitchen. From the outset, they were prompt, reliable, and easy to communicate with, making the whole process stress-free. The quality of their workmanship is excellent, with great attention to detail throughout. They kept everything clean and tidy each day, which we really appreciated. I would highly recommend them to anyone looking for professional and dependable builders. Ben, Ilford
Imeraj
No reviews yet
Extension Builder in Isleworth
I am a construction worker . I had 5 years working for a civil engineering company like supervisor . I have lot of skills referring construction ( steel erection , timber works , underground works etc ) . Last year i finished level 1 and 2 in plumbing aswell to complete more professional skill and manage the common problems in most of new and existing properties . Contact me if you have something and let proceed to fix or upgrade your properties .
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Gabriel Slavik
No reviews yet
Extension Builder in Isleworth
I’m doing building work for last last 23 years. I always try to do precise work, I am happy to help and advise the customer.
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B & I CONSTRUCTION LTD
No reviews yet
Extension Builder in Isleworth
WE ARE A NEW COMPANY IN THE MARKET SINCE OCT 2017 AND HAVE BEEN SUCCESSFULLY FINISHING EXTENSIONS AND REFURBISHMENT AROUND LONDON. WE UNDERTAKE THE TYPES OF WORK LISTED BELOW AND GUARANTEE THE HIGHEST STANDARD AS WELL AS TIME EFFICIENCY WHEN TAKING UP A PROJECT. OUR TEAM IS MADE UP OF SPECIALISTS AS WELL AS LABOR WHO HAVE BEEN WORKING IN THIS INDUSTRY FOR MORE THAN 5/10 YEARS. SINCE OCTOBER 2017 WE ARE ABLE TO DEMONSTRATE OUR EXCELLENT WORK VIA PICTURES AND TESTIMONIALS FROM OUR HAPPY CLIENTS.
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K&S Design Build Ltd
No reviews yet
Extension Builder in Isleworth
We have a committed team working on a range of different projects throughout London, working in all sectors including; residential, commercial and conservation. The services that we provide are, architectural and structural 2d & 3d designs, calculation, planning permission, building control, new build, refurbishment, self contained flats, loft conversion, rear and side extension plus much more. I have over 30 years of experience in construction and have worked on a variety of different projects, from small developments to managing large scale Projects.
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Surgery Premises Group
Rating: 5 out of 5
Extension Builder in Isleworth
Hi, We are Surgery Premises Group, while we are experts in healthcare properties, we understand residential and commercial works to keep our team busy and away from the biscuits in the office. Our team members are fully equipped and friendly. Look forward to helping you.
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Latest review:
Great experience. Easy to communicate with. Professional and clean, everything was sorted out 0 hassle. Highly reccomended.
2bros brick genius
No reviews yet
Extension Builder in Isleworth
Hi my name is Dio. I got 5 years experience of doing brick work I can do small jobs like garnden walls to bigger jobs like extensions and houses I always work safely I don’t mind talking and explain to customers anything they want to know before and during the work .
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Raf Building Services
No reviews yet
Extension Builder in Isleworth
Fully qualified carpenter, NVQ3 , insured and happy to help.. No job to small or to big - from flat pack furniture to complete loft covertion.
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ER Sumit Kundu
No reviews yet
Extension Builder in Isleworth
I am Civil Engineer with 8 years of experience in Indian market currently gaining experience in UK. I have recently completed my Master's Degree in structural Engineering from Brunel University (September,2024).
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Telamon Building Services
No reviews yet
Extension Builder in Isleworth
Our business is a partnership that undertakes house builds, extension, loft conversion and all general building works with over 40 years experience. Running and organising from start to finish. With a team you can trust to see the work you want completed to the highest of standards.
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John Burke Carpentry
Rating: 5 out of 5
Extension Builder in Isleworth
Hi there, I hope you're well. My name is John and I ve been in the building trade for 20 years. I'm a qualified master carpenter, and there isn't much left I haven't done. Im a bathroom fitter as well, so plumbing, tiling, plastering, is all second nature to me. I ve done jobs in every trade, when I was an apprentice all those years ago, that's how my boss at the time worked. Knowledge is power as they say. I based in Bracknell, and I can travel up to an hour from there. So as far as Dorking to the east, and the same distance in the other directions. As I said, in my 20 years of working in the trade, I ve done nearly everything there is, I'm a friendly guy and happy to answer any questions. I won't be the cheapest, but I LL be one of the best. I look forward to hearing from you. John
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Latest review:
John designed and built our new oak porch which is amazing. His problem solving throughout and very broad expert building skills made the whole job go very smoothly. We would very highly recommend (John also previously did our new kitchen conversion to a very high standard)
Abbotts Brickwork
No reviews yet
Extension Builder in Isleworth
Brickwork and general building ! From structural work to new extensions. I started bricklaying at 16 and over the last 30 years I have developed new skills which include , good carpentry, ceramic tiling, plastering and rendering, groundwork, patios, block paving. I can do pretty much anything. All the wet trades and carpentry !
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Construction
No reviews yet
Extension Builder in Isleworth
Bajwa Construction Ltd specialises in high-quality residential construction and renovation services. Our expertise includes bathroom renovations, tiling, home extensions, loft conversions, and roofing works. We are committed to delivering reliable workmanship, attention to detail, and projects completed to a high standard, with customer satisfaction at the heart of everything we do.
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4.2

Top rated Extension Builders

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

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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 Isleworth?

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

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

What are the hourly rates of extension builders in Isleworth?

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

Find extension builders in Isleworth with MyBuilder

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

Step 2: Compare different extension builders in Isleworth

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

Step 3: Hire Isleworth extension builders with confidence

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

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

What to ask a Isleworth extension builder before hiring?

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

An extension builder in Isleworth 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 Isleworth 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 Isleworth?

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 Isleworth 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 Isleworth 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 Isleworth

Can an extension builder in Isleworth help with planning permission?

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

Many Isleworth 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 Isleworth help with materials and finishes?

Yes, most extension builders in Isleworth 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.