Extension Builders in Windsor

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (15 reviews)

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

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 Windsor

1952 Results

Sort by:

Blueprint Developments Limited
Rating: 5 out of 5
Extension Builder in Windsor
Welcome to Blueprint Builders, where your dream space becomes a reality. Nestled in the heart of London, our team is at the forefront of design and construction innovation. We specialize in transforming spaces into luxurious living experiences, with services that include: - Elegant House Extensions - Meticulous Loft Conversions - Comprehensive Renovations - Bespoke New Builds And a wide spectrum of commercial and domestic building projects designed with your luxury and comfort in mind. At Blueprint Builders, your satisfaction is not just a goal—it's our promise. We're dedicated to bringing smiles to our clients faces through meticulous attention to detail, unparalleled craftsmanship, and a seamless client experience from start to finish. Stay connected with our journey of transformation on Instagram @blueprintbuilder. Follow us for a regular dose of inspiration through updated photos of our latest projects. Dreaming of a space makeover? Don't wait any longer. Contact us today for a complimentary site visit and a personalized quote. Let's make your vision a living, breathing reality.
Get in touch
Latest review:
We recently had our 3-bedroom house renovated, along with a new rear extension build and a garage conversion, and I couldn't be happier with the results. The team demonstrated exceptional craftsmanship and attention to detail throughout the project. From the initial consultation to the final handover, they were professional, reliable, and transparent about costs and timelines. The renovation completely transformed our home, enhancing both its functionality and aesthetics. The rear extension seamlessly integrates with the existing structure, creating a spacious and light-filled living area, while the garage conversion provides a versatile space we can now use as an office. The team was approachable, accommodating any changes we requested during the build, and always left the site clean and organized at the end of each day. I was particularly impressed with their ability to stay on schedule despite some challenging weather conditions. If you're looking for a dependable team that delivers quality work, I highly recommend Blueprint.
london construction company
Rating: 5 out of 5
Extension Builder in Windsor
Established in 1994 , Family run business . Friendly reliable service , Extensions / lofts and landscape specialist
Get in touch
Latest review:
Extensions- 15 Feb 2026
Incredibly professional, super fast response, great quality of work, sound and thorough advice, available and patient at all times - Terry did a great job putting together my garden office installation at short notice despite inclement weather. I can vouch sincerely for his work and will definitely recommend him
NOMAHJ LTD
No reviews yet
Extension Builder in Windsor
We are a very experienced builder with qualified professionals, and competent trades men and women to carry out high quality, cost effective for our clients. For a professional touch on all your project needs. CAT A & B refurbishment, Loft conversion Building extensions Groundworks, Basement construction, All carpentry and joinery works, Drive ways &Patio, etc. or, For professional quantity surveying consultancy Contact us for the best solution.
Get in touch
ritz builders uk ltd
Rating: 5 out of 5
Extension Builder in Windsor
Ritz Builders UK Ltd can take care of any property renovation or house extension, from complex double basement developments to a new builds. Our builders have worked on various type of properties across UK, giving them a new light and converting them into modern and contemporary living spaces. Our professional construction team, who come supported by a dedicated workforce, are well regarded by commercial and residential property developers.
Get in touch
Latest review:
The builder was reliable and dependable. Work was neat and to taste .
RA Designs and Build Ltd
Rating: 5 out of 5
Extension Builder in Windsor
We are a dynamic construction firm specialising in innovative design and high-quality building solutions for both residential and commercial projects. With a commitment to excellence and attention to detail, our team of experienced architects, engineers, and skilled tradespeople collaborates closely with clients to bring their visions to life. We prioritise sustainable practices and utilise cutting-edge technology to enhance efficiency and ensure the durability of our structures. From initial design concepts to final construction, we are dedicated to delivering projects that not only meet but exceed client expectations, creating lasting value and aesthetic appeal. Our customers consistently recommend us for our commitment to quality, attention to detail, and exceptional customer service. They appreciate our ability to turn their visions into reality while staying on schedule and within budget. Positive testimonials highlight our professionalism, seamless communication, and the collaborative approach we take throughout each project. Clients feel confident entrusting us with their building needs, knowing that we prioritise their satisfaction and work tirelessly to ensure memorable and successful outcomes.
Get in touch
Latest review:
Excellent quality of work which has not caused any problems for many years. Efficient work style whilst keeping up a high standard of work.
Prab builders ltd
Rating: 5 out of 5
Extension Builder in Windsor
Prab Builders is one of the leading and fast growing constructions companies in the UK who take projects and work in a atmosphere where one can get everything under one roof. We have a team of experience people and we understand what our clients want. And as result we give total satisfaction to our customers and convert ideas into reality to give our best We are in this field from the past 18 years .Our service is professional,caring,and high quality and Customers are our First Priority
Get in touch
Latest review:
Extensions- 8 Dec 2021
Me and my wife are very satisfied with Prabbuilders work. What stands out with Prab builders is that they do every task as if they are doing it for their own house and with work they are meticulous and exceptional. What we started with and how our extension looks now is simply amazing and the way they explain about what will look good(Color/ the structure etc ) is commendable as we both were not sure what decision to make, but after completion we are overjoyed to see how excellent it turned out to be now. I would recommend them anytime based on their skill ,eye for detail, being punctual and the hard-work they invest into every task to make sure we are getting the final product the way we dreamt of.
Quantus Property Group Ltd
Rating: 5 out of 5
Extension Builder in Windsor
My business it’s mostly building construction, we are a growing team and we manage to to do all types of construction jobs work from kitchen and bathroom installation, painting , floor fitting to extension and landscaping
Get in touch
Latest review:
Carpentry- 4 May 2020
Liviu/Lee as I'd like to call him, did a great job - He came over to do some woodwork/repairs at my house - He was punctual, and reliable. Very easy to communicate with and friendly chap - Easy to work with, and very creative and high quality/standard of work - I would very highly recommend anyone who wishes to hire his services in the future. Thank you so very much and I can see us working again as you smashed it on this one!
Apex Plan & Build LTD
Rating: 5 out of 5
Extension Builder in Windsor
Apex Plan & Build is your trusted partner in turning vision into reality. Specializing in both domestic and commercial construction, we are dedicated to transforming houses into dream homes and businesses into efficient, modern spaces. With over 30 years of collective industry experience, our team ensures every project is completed to the highest standard, offering expertise in M&E works, including air source heat pumps and MVHR ventilation systems. We also bring cutting-edge innovation to your space with smart home automation solutions like Loxone and Control4, creating environments that are not only beautiful but also intelligent and energy-efficient. Apex Plan & Build is where your dream project is our top priority.
Get in touch
Latest review:
Very professional and organised. My rear extension renovation was impeccable, thorough knowledge of building regulations with a variety of services to choose from really put me at ease. The venetian plaster feature wall has become the centrepiece of our home.
Bawabuilder
Rating: 5 out of 5
Extension Builder in Windsor
We can extend
Get in touch
Latest review:
Fencing- 13 Mar 2026
We hired Bawa to install new fencing, and he did a fantastic job from start to finish. You can immediately tell he’s an all-rounder who understands construction very well. The work was carried out efficiently and to a high standard. Bawa has a great attitude, is very hard-working, and clearly takes pride in what he does. Communication was easy throughout, and the whole process felt smooth and professional. It was a real pleasure having Bawa work for us, and I wouldn’t hesitate to recommend him.
ER Sumit Kundu
No reviews yet
Extension Builder in Windsor
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).
Get in touch
N.J.Day
Rating: 5 out of 5
Extension Builder in Windsor
I have been in the construction industry for over 30 years. I have been working and specializing in building extensions for many clients. I have incorporated many good tradesmen into my scope of works. I have great references, good insurance on request, and you can always visit a completed job, speak directly to the clients. Quality is what we are based on, no fancy gimmicks! I am based in Wokingham, estimates and advice are free, call anytime to discuss your project, Nick
Get in touch
Latest review:
Extensions- 17 Feb 2020
Nick has now completed the second part of my building work and it looks fantastic. I could not be happier with the work he has done. He is a very knowledgeable guy and has links to the necessary different trades required for all aspects of the build.
15158290 Ltd
Rating: 5 out of 5
Extension Builder in Windsor
JVS Da-Vinci Builders is a reputable construction company based in Southall, London, with extensive experience in residential and commercial projects. Our skilled team has successfully completed over 30 projects, specializing in services such as loft conversions, extensions, refurbishments, interior design, and custom cabinetry. We are committed to delivering high-quality craftsmanship, exceptional customer service, and innovative solutions that enhance the functionality and aesthetic appeal of our clients’ spaces. Through our meticulous planning, design, and building processes, we ensure that every project is completed to the highest standards and within budget.
Get in touch
Latest review:
I recently hired Vithesh for a loft conversion, and I couldn't be happier with the results! He completed the project with exceptional quality and efficiency. The structural floor beams and steel structure were flawlessly installed, and the roof comes with a reassuring 10-year warranty. What impressed me the most was his ability to complete the structural job in just 3 weeks, even though the original estimate was 5 weeks. His commitment to meeting deadlines and delivering high-quality work is truly commendable. I’m absolutely thrilled with the outcome and will definitely be calling him for any future projects in my home. Thank you, Vithesh, for a job well done!
AKAM BUILDERS LIMITED
Rating: 5 out of 5
Extension Builder in Windsor
Akam Builders have over ten years experience in providing cost effective solutions for domestic & commercial building requirements be it simply refreshing an old bathroom to building a nursing home. We have a hard working team ready to help you transform your house into your dream home.
Get in touch
Latest review:
I had a commercial property converted into 2 one bedroom flats. Akam builders did an A-class job. The work was done to a very high standard and within the time scale stated by Gurwinder. I was impressed by the extra work he did without any extra charge. This builder is a genuine and reliable builder. The work is in perfect condition after 6 months.
O S R Construction & Groundworks Ltd
New on MyBuilder
Extension Builder in Windsor
We specialise in extensions in residential and commercial properties. We also offer basement work and underpinning. We do all groundworks for large and small property developers. All hard landscaping work is second nature to us and we offer all aspects in this area and also irrigation works. We have been in this trade for 30 years and take great pride in all of our work.
Get in touch
A&s builders and contractors
No reviews yet
Extension Builder in Windsor
We are team of qualified and professional tradesmen covering all aspect of building work, full house wiring, plumbing, bathroom renovations, painting and decorating, extentions and even double glazing. Our team is very professional and customer satisfaction is our first priority.
Get in touch
FIND PROPERTY LIMITED
No reviews yet
Extension Builder in Windsor
FIND PROPERTY LIMITED company that you can rely on OUR SERVICES like Building, construction, Maintenance, Repairs and Renovation/Remodelling jobs. With over 10 years of experience, we pride ourselves on providing a professional, reliable, quality service to all customers – no matter how small the job being carried out. A vastly experienced team of professional tradesmen, our focus is always on fulfilling your requirements with minimum fuss and maximum satisfaction.
Get in touch

3.9

Top rated Extension Builders

Our Extension Builders in Windsor, are rated 3.9 out of 5 based on 15 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 Windsor?

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

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

What are the hourly rates of extension builders in Windsor?

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

Find extension builders in Windsor with MyBuilder

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

Step 2: Compare different extension builders in Windsor

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

Step 3: Hire Windsor extension builders with confidence

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

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

What to ask a Windsor extension builder before hiring?

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

An extension builder in Windsor 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 Windsor 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 Windsor?

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 Windsor 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 Windsor 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 Windsor

Can an extension builder in Windsor help with planning permission?

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

Many Windsor 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 Windsor help with materials and finishes?

Yes, most extension builders in Windsor 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.