Extension Builders in Windsor

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

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Some of our top rated extension builders in Windsor

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SRK Building Solutions Ltd
No reviews yet
Extension Builder in Windsor
At SRK Building Solutions we pride ourselves on high quality workmanship with a passion for getting the job completed to the highest standard. We provide a wide range of building solutions with free quotes / estimates & friendly professional advice. At SRK Building Solutions we pride ourselves on high quality workmanship with a passion for getting the job completed to the highest standard. We provide a wide range of building solutions with free quotes / estimates & friendly professional advice. We specialise in the following areas: - New Builds - Single & Double storey Extensions - Loft Conversions - Kitchen & Bathroom renovations - Plastering - Painting & Deco - Commercial Maintenance - Planning Applications We look forward to working with you.
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GJ Construction
No reviews yet
Extension Builder in Windsor
We provide construction, maintenance and removal services ranging from painting, to flooring, to refurbs, gardening and landscaping. We also help with removals and relocation - the ultimate one stop company!
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Smart skill builders
No reviews yet
Extension Builder in Windsor
Happy customer
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CS GAS AND ELECTRIC
Rating: 4.6 out of 5
Extension Builder in Windsor
As a fully qualified multi-trade professionals, We offer comprehensive building and renovation services across London. Our expertise spans gas, electrical, and construction work, backed by Gas Safe Registration and NICEIC certification. ## Services **Building & Construction** - Extensions and loft conversions - Bathroom renovations - Structural modifications - Carpentry and joinery **Gas & Electrical** - Boiler installations and servicing - Gas safety certificates - Full electrical installations - Rewiring and testing We handle projects of all sizes with the same dedication to quality and safety. My multi-trade expertise means efficient project management and seamless coordination of all aspects of your renovation. I'm fully insured, and all work comes with a guarantee. **Certifications** - Gas Safe Registered - NICEIC Approved - CSCS Card Holders For free quotes or to discuss your project, contact me today. We serve Hayes and surrounding areas, delivering reliable, professional service with attention to detail.
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Latest review:
Gas Work- 29 Jan 2026
Excellent job. Highly recommended. Thank you Avi and Mandeep 🙏
SHIVAY DEVELOPMENTS LTD
Rating: 5 out of 5
Extension Builder in Windsor
From Concepts to Creations, Shivay Developments Ltd has combined experience of over 15 years in Construction trade. Our team consist Expert Tradesmen and Experienced Project Managers with a single point of responsibility and accountability throughout the construction process.
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Latest review:
Extensions- 3 Jun 2020
Mohit and his team at Shivay Developments completed extensive improvement work in my house (rear extension, internal structural work, kitchen, toilet, boiler installation, plumbing and electricals, flooring & finishing). The end result exceeded all my expectations in terms of cost, time and quality making me a very happy man. Sharing some pictures would have done proper justice but unfortunately there doesn’t seem to be a way to upload pictures with the feedback. In spite of living inside the property whilst the works were ongoing, we hardly felt any impact owing to how well Mohit had planned the whole thing and the advance notices he used to give us from time to time. All the guys too were very considerate when it came to minimizing the inconvenience all the dust and noise could cause to us and also the neighbours. I also liked the fact that nothing was rushed and a great deal was given to attention for details and the result was just splendid. I guess at the end of the day, it’s what you see that matters most. However amongst everything that hit the right notes for me during the entire process, it was the confidence that I can trust this team to do the job right stood out. It was a bunch of warm and friendly people who had direction and knew what they were doing. A special mention and a big thank you to Kash and Pala to lead the work from the ground up and Mohit for taking up and managing the job and of course for the celebratory rounds of beers :) Do keep in touch
EcobuildUK Limited
No reviews yet
Extension Builder in Windsor
Eco Build is a building company committed to creating energy efficient homes that meet the needs of our clients. We build strong relationships with clients, suppliers and trade professionals to ensure premium construction process and results' whether undertaking new build, house extension or property renovation we work closely with our clients that have high sustainability but are also luxuriously finished inside and out.
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Luca Piletto
Rating: 5 out of 5
Extension Builder in Windsor
With over 15 years of experience GS specialise in garage conversion , extensions and renovations. Our company consistently provide quality workmanship from initial planning through to design, build and finish professionally and effectively.
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Latest review:
Extensions- 27 Mar 2019
Luca & Team were very pleasant to work with. They suggested that we go for a bigger extension (3.6 x 8 m), which we eventually did as we had to go for planning permission anyway. Their quotation was reasonable and consistent, and we were impressed with a recent project they did which was a similar layout extension to our plans. They went an extra step always to make the project work for us. They built the rear extension, and then we asked them to add on the finishing (flooring, painting, decorating) and to install the kitchen that we purchased from Wren Kitchens. We were satisfied with their work on our project.
S&s construction
Rating: 5 out of 5
Extension Builder in Windsor
We can do , electric, plumbing, plastering , painting all building work
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Latest review:
It was a time challenge for me to move to newly purchased house as my rental agreement was due. I got Saby from personal reference. All home colour, wiring, removing old big boiler, water tank and rerouting of all pipe work. Roof repair , new two en suites construction, whole IKEA kitchen. He delivered as per our expectation and design in 8 weeks. No time waste and all material he arranged. I am very happy the way he professionally handled the work and delivered on time. I would recommend him. Make sure your design is ready and perfect. Discuss with him before start and avoid changes for best results.
Edyk ltd
No reviews yet
Extension Builder in Windsor
We are involved in House Building, Extension, Renovation, Architecture, Interior Design, and Decoration. EDYK sought to make a name for itself by providing high-quality services in all its fields of expertise, including design, construction, and property renovation. We are involved in Architectural Interior Design, Building works, Renovation, and Decoration. In addition, we have got technical experience to supervise New Builds House Building and Extensions.
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Cunningham building services
Rating: 5 out of 5
Extension Builder in Windsor
At Cunningham Building Services we believe in carrying out affordable, high quality work to suit every customer. Cunningham Buildings Services recruit only the very best tradesman to make up their construction team so rest assured the project will be carried out by experienced professionals. Our aim is to exceed our client's expectations and provide outstanding results so that every one of our client's would happily recommend us to a friend.
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Latest review:
Joes team did an Indian sandstone patio,paths and new Indian sandstone driveway, They did an excellent job and they left the site totally cleaned and I’m very pleased with the job.
Diamond home creations ltd
No reviews yet
Extension Builder in Windsor
Diamond Home Creations Ltd is a construction company that specialises in domestic and commercial building projects. Our unique and long-standing relationships with leading professional construction industry firms and suppliers, allow us to offer our clients the very best customer experience and value for money in the business.
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Skyway construction ltd
Rating: 5 out of 5
Extension Builder in Windsor
I am working in construction from 15 years . I have a good and experience team. I recently renovated the 3 bedroom house with a 6 meter back extension. I mostly do loft conversion, back extension, renovate the old house , back garage etc.
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Latest review:
Handyman- 22 Jan 2018
Saravjeet was excellent throughout both in his communication and flexibility with the number of small jobs that we needed completing throughout the house including repairing our kitchen cabinets, garden fence and electrics. I would recommend his services wholeheartedly.
Ava Constructions & Decors
Rating: 4.9 out of 5
Extension Builder in Windsor
Ava Constructions & Decors Ltd is a UK-based construction and renovation company committed to delivering top-quality craftsmanship and reliable project management. We specialise in full refurbishments, extensions, bathroom and kitchen installations, and commercial fit-outs — always tailored to the client’s vision and delivered to the highest UK building standards. With a keen focus on transparency, timelines, and customer satisfaction, Ava Constructions has earned the trust of homeowners, investors, and developers alike. Punctuality and completion of work on time are a priority .Our team always respect the client wishes and work with them to achieve the best possible results to their satisfaction. Thank you in advance
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Latest review:
Extensions- 16 Apr 2026
I would not recommend this builder based on my experience. Instead of using crushed concrete they used soil to fill the house flooring for underfloor heating. 1 The project suffered from poor communication, repeated delays, and a lack of clarity around responsibilities. There were serious issues with the foundation works, which failed Building Control inspection and now require remedial engineering input before works can proceed. The site was also left incomplete and not in an acceptable condition. Despite substantial payments being made, key documentation, technical responses, and follow-through were lacking, leaving me to resolve major compliance and structural issues independently. My experience has resulted in delay, additional cost, and considerable stress. I would strongly advise others to ensure there is a detailed written contract, clear scope of works, and defined accountability
Bains construction
No reviews yet
Extension Builder in Windsor
Our company provides good work with quilty.
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AA DIAMOND ABODES
No reviews yet
Extension Builder in Windsor
Reliable professional Building & Landscaping Our team is professional and reliable with years of experience construction projects of all kinds. Experienced in all kinds of new build, house extensions and garage conversions and can offer the best advice to maximize the space, built to strictly regulated standards. Services Provided: House Extensions/Restoration, Loft/Garage Conversion, New Build, Kitchen Extension, Renovation, bathrooms. Shed Design/building, Landscape Construction, Patio.
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Mansell Construction
Rating: 5 out of 5
Extension Builder in Windsor
Mansell Construction are a family run company that has been in the building trade for over 30 years. We have a passion to deliver every project we take on, no matter how big or small to the highest of standards. We take pride in having a friendly and clear approach. We specialise in all kinds of work including - Extensions - Loft conversions - Roofing - Bricklaying - structural alterations - Steel RSJ installation - conversions - Plastering/Rendering - Driveways/Patios - Fencing and more.
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Latest review:
Bricklaying- 16 Mar 2023
Good brickwork and plastering very neat work , would recommend them . John

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.

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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 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.