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

2020 Results

Sort by:

JERRY BUILDING LIMITED
No reviews yet
Extension Builder in Windsor
Dynamic and highly experienced builder whit over 35 years in residential construction. Taking on variety of projects Lofts,Extensions, Renovations from concept to completion. Dedicated to quality in craftsmanship and delivering results to client expectations . Managing projects hands an. Fully insured whit public liability coverage. Reference from clients
Get in touch
A & A Build and Design
No reviews yet
Extension Builder in Windsor
Refurbishment, Extensions, New build, Design and Maintenance of any domestic building project.
Get in touch
Raghbir Singh
Rating: 5 out of 5
Extension Builder in Windsor
Carpenter with 15 years of experience providing reliable, high-quality workmanship across Dunstable, Luton, Leighton Buzzard and surrounding areas. Specialising in all aspects of carpentry including first fix, second fix, doors, skirting, architraves, flooring, kitchen fitting and bespoke work. From small jobs to full renovations, all work is completed to a high standard with attention to detail. Reliable, punctual and tidy, with a focus on getting the job done properly and keeping customers satisfied.
Get in touch
Latest review:
Carpentry- 17 May 2026
Raghbir did an excellent job and completed the work on time, exactly as agreed. What stood out most was his honesty and professionalism there were no hidden charges or unexpected costs, which can often happen with some tradesmen. He also didn’t cut corners and delivered quality workmanship throughout. I would highly recommend him for any carpentry work.
Artem
No reviews yet
Extension Builder in Windsor
Hi Everyone!!! I’m a reliable and experienced handyman based in South London with over 13 years in construction. I specialize in all kind of repairs, refurbishing, bathroom renovation, kitchen renovation, lofts conversion, extensions, electricity ,plumbing, painting, and general maintenance. ✅ Fast, clean, honest service ✅ Always on time — I respect your time and home ✅ Fully equipped + liability insured No job too small — message me for a free quote!
Get in touch
Sebastian's Builders
Rating: 5 out of 5
Extension Builder in Windsor
My business comprises of general building works, including extensions, loft conversions and house refurbishments. I also undertake smaller works including bathrooms, kitchens garden patios and fencing. I have been in the building trade for 15 years starting as a dry lining contractor and then moving to a general building firm.
Get in touch
Latest review:
Bathroom Fitting- 5 Oct 2022
Sebastian did a fantastic job with our downstairs toilet. Stayed close to me as there were delays in the delivery of some of the installations I’d ordered, he worked around it quite well for us. The quality of work is great! Thanks Seb.
X21 Building and Carpentry services
No reviews yet
Extension Builder in Windsor
X21 Building and Carpentry Services specialise in high end refurbishment work, with a portfolio of project including hotels and restaurants in Verbier, Ski lodges in Chamonix, Finca restorations in Ibiza. We also work on new builds, offices, nightclub/bar design & build and domestic works including loft extensions in the UK.
Get in touch
Taras
No reviews yet
Extension Builder in Windsor
Carpentry
Get in touch
ANM Efficient Solutions
Rating: 4.9 out of 5
Extension Builder in Windsor
Hello, Welcome to ANM Efficient Solutions profile– Expert Carpentry & Joinery Services At ANM Efficient Solutions we specialise in high-quality woodworking and carpentry services, offering expert craftsmanship in: ✔ Kitchen Fitting – Precision installations tailored to your space and style. ✔ Door Installation – Interior and exterior doors fitted with accuracy. ✔ Floor Installation – Hardwood, laminate, and engineered flooring for a perfect finish. ✔ Custom Woodworking – Bespoke carpentry solutions for homes and businesses. ✔ Framing & Structural Work – Strong, reliable framing for new builds and renovations. ✔ Roof Shell Construction – Expertly built roof structures for durability and safety. With years of experience, a keen eye for detail, and a commitment to customer satisfaction, we ensure every project is completed to the highest standard. Whether you’re renovating your home, upgrading your business, or building from the ground up, ANM Efficient Solutions is your trusted partner in carpentry. Regards ANM Team
Get in touch
Latest review:
Carpentry- 23 Jun 2026
Alina, Max and the team have been amazing. Gave a great price, turned up and began working immediately. Quality is fantastic, so much so we have asked them to complete additional works. They arrive on time, work hard all day and left the house and garden in a clean presentable manner. 100% recommend them, multi skilled, polite, and reliable team that deliver quality work at reasonable rates. Will use them again and have already recommended them to friends and family
Egm construction ltd
No reviews yet
Extension Builder in Windsor
Building Trust with Quality Work
Get in touch
Curraj Construction Ltd
No reviews yet
Extension Builder in Windsor
What sets Curraj Construction apart is our dedication to quality and client satisfaction. We don’t just build structures - we build long-term relationships. Every project we take on is managed in-house by qualified, skilled professionals who bring years of experience and a hands-on approach to ensure smooth delivery. Our work is fully insured and compliant with UK building regulations. We never compromise on materials or workmanship. We understand that your home is your most valuable asset, so we treat every project with the respect it deserves - whether it's a small renovation or a large-scale build. With transparent quotes, reliable timelines, and an approachable team, we make construction feel simple, not stressful.
Get in touch
TLP Properties Limited
No reviews yet
Extension Builder in Windsor
TLP Properties is a Residential Construction and Project Management company with a presence in London, The Home Counties and Bristol, specialising in high-end residential projects. Our experience is in providing a tried and tested construction service for new builds private homes, small residential developments, apartment blocks, change of use conversions from office to residential, extensions, basements and more
Get in touch
dmbuilding
No reviews yet
Extension Builder in Windsor
single bricklayer with 18years experiance in the game! very neat and tidy! professional and clean!
Get in touch
London HMO Investments LTD
New on MyBuilder
Extension Builder in Windsor
We are a firm of general builders providing all trades to the industry such as extensions, loft conversions, HMO conversions, plumbing, electrics, kitchens, bathrooms, carpentry & flooring, tiling, painting & decorating, landscaping etc. We also handle all planning, building control and licensing applications, as well as any appeals. We have over 30 years of experience in the industry and have helped many people achieve the finished design for their property. We are professionals, with Liability and Professional Indemnity Insurance, so we can also help you to achieve your desired results, from the smallest leak to a full rebuild. Please contact us for a no-obligation quote.
Get in touch
A D FOD Construct
No reviews yet
Extension Builder in Windsor
Hi, my name is Adrian, i am a highly skilled builder. I am reliable, honest and hard working. I don’t waste time and my quotes are competitive. Don’t hesitate to contact me!
Get in touch
Drago construction
Rating: 5 out of 5
Extension Builder in Windsor
Drago construction started trading in 2023; the company is able to support homeowners with jobs in the following categories: 1- Fencing/Gates 2-Gardening 3-Brickwork
Get in touch
Latest review:
Fencing- 19 Sep 2026
Drago did a great job replacing our fence. He is very hard working and does an excellent job. I would highly recommended him
Ben Smith Carpentry & Building
Rating: 5 out of 5
Extension Builder in Windsor
We are high quality and recommended building and carpentry contractors. Within our company we have 35 years of experience in building, carpentry and renovation. We are also Fensa registered windows and doors installers. We are registered with a number of trade associations these include: Trust Mark - Government Endorsed Standards Consumer Protection Association CSCS Registered Offering an insurance backed guarantee on all works References available on request
Get in touch
Latest review:
Extensions- 9 Apr 2018
Ben and his team were excellent and have produced a high quality extension for the price quoted. I very much valued that they were always clean and tidy, courteous and were available to contact during the build.

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.