Extension Builders in Uxbridge

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (14 reviews)

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

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 Uxbridge

2632 Results

Sort by:

North Builders LTD
Rating: 4.8 out of 5
Extension Builder in Uxbridge
North Builders LTD have a team of specialists which gives you quality and high standard work on Loft conversions, Extensions, Roofing, Renovation, Refurbishment. We based in London and we cover all M25. With the best quality work and proffesional prices on the market we managed to make happy a lot of costumers around London and not only. Our priority is the costumer to be satisfied, the project to finish in timeline and on budget. Contact us for free quotes.
Get in touch
Latest review:
Loft Conversion- 2 Nov 2025
Full loft conversion with dorma. Blerim always asked the right questions and made really good suggestions. Very helpful and great quality. Would happily recommend him and his team.
Pure Design and Build Ltd
Rating: 5 out of 5
Extension Builder in Uxbridge
Happy always to discuss & give free no obligation quotations up on request. We specialise in: Extensions Lofts Kitchens Bathrooms Refurbishments Painting & decoration Many more Please feel free to give us a call always happy to discuss your projects.
Get in touch
Latest review:
Extensions- 8 Nov 2024
After much deliberation, I picked Daron and his crew for our job. From start he was very flexible, honest and accommodating. We quickly understood each other. His crew showed up when agreed and hit the ground running. The shell for our side extension was up in 4 weeks, quicker than expected. Quality of work was really good. As I am now taking over to finish the job, I also really appreciated that both Daron and his guys were more than happy to discuss next steps, or how to do some of the things. Also, if I get stuck I know I will be able to give them a ring and get them booked in to complete some of the items. It was a real pleasure working with them all, and should I have another job come up, I will not hesitate to call them again.
london construction company
Rating: 5 out of 5
Extension Builder in Uxbridge
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
building_wise
No reviews yet
Extension Builder in Uxbridge
Looking for a stunning and reliable building to call home or office? Look no further than our top-of-the-line building construction. Our building construction features a sturdy foundation, expertly crafted walls, and durable roofing to ensure long-lasting strength and protection against the elements. We use high-quality materials and top-of-the-line equipment to ensure precision and accuracy in every detail of the construction process.
Get in touch
Plastering and Rendering
Rating: 5 out of 5
Extension Builder in Uxbridge
plasterering and Renderering specialist, K-rend - silicone render - insulations, EWI system, Micro cement. drylining, and full refurbishment. Over 20 years experience.
Get in touch
Latest review:
Plastering- 7 Aug 2023
Festim was efficient, punctual and did a very nice job rendering my wall. Highly recommended.
Urban Modern Homes
Rating: 5 out of 5
Extension Builder in Uxbridge
We are a team of highly skilled individuals, with a great sense of professionalism and integrity. Our purpose is to deliver the transition from our customer's vision to reality and strive to bring satisfaction and joy with the results of our work. We aim to offer the best possible service while building trust with our clients. Having over a decade experience in the building industry, gives us the possibility to be quick, flexible and efficient.
Get in touch
Latest review:
Carpentry- 11 Jan 2023
This was a great experience with a builder who arrived when he said he would and did what he said he would do! Identified the problem we had and got to work repairing it! Super efficient and nice to deal with! Thumbes up!
Kang construction ltd
Rating: 5 out of 5
Extension Builder in Uxbridge
We are a family run business who have been trading for the past 20 years. The business was started by our father and now we are continuing. We have been working with our father for the past 14 years. We specialise is loft conversions, building extensions, and renovations, all type of building work.
Get in touch
Latest review:
Loft Conversion- 18 Mar 2022
Brilliant company, very friendly people, easy to communicate, punctual, high standard work, committed to the scheduled time, honest and competitive prices. I recommend them for friends and family.
Your Hubb Ltd
Rating: 5 out of 5
Extension Builder in Uxbridge
We provide building & electrical services to Clients in London and surrounding counties and pride ourselves in quality workmanship and a professional service putting our Clients at the heart of what we do. Before the start of the project everything is made clear so our Clients know exactly where they stand. Approved by the NICEIC, our Clients are covered by the six year guarantee. All of our work is fully insured and guaranteed. Referencing and site visits are available upon request.
Get in touch
Latest review:
Electrical- 8 Jun 2020
Thank you for great work. Anthony was very helpful and professional. I would recommend him.
NIHAL BUILDER LTD
No reviews yet
Extension Builder in Uxbridge
We have experience more than 5 years and do lot of type of work as loft and extension, guttering, building new home, refurbishing etc.
Get in touch
FKL
Rating: 5 out of 5
Extension Builder in Uxbridge
Hi thanks for taking the time to read my company profile, Form Construction specialise in extensions lofts basements and renovations. We strive to deliver quality workmanship. We pride ourselves on being quality tradesmen, always going the extra mile for our clients. We work with many different suppliers to ensure our clients get good value and good quality materials. If you feel we are suitable for your project please get in touch to discuss your project Many thanks John Campbell
Get in touch
Latest review:
Kitchen Fitting- 3 Sep 2020
Very reliable, hard working and talented ! His quotation was incredibly reasonable too. Very grateful
PSN Building Services LTD
No reviews yet
Extension Builder in Uxbridge
PSN Building Services LTD is a family run business that has been established since 1981. We specialise in Extensions, Loft conversions and structural repairs. Our Key aims are quality workmanship at a competitive price and customer satisfaction We are approved by the local authority and are fully insured for peace of mind
Get in touch
SP Builders
Rating: 4.8 out of 5
Extension Builder in Uxbridge
Welcome to SP Builders, a family-run builder with over 40 years' experience. Undertaking all aspects of building work, refurbishment, lofts, extensions, paving, guttering, carpentry and plastering etc. We aim to make the process from conception to completion as pleasurable and rewarding as possible. We know how important it is to trust a builder when employing them to work in your home. We endeavour to answer your questions and give you the information you need to make the right decisions.
Get in touch
Latest review:
Extensions- 16 Sep 2025
Steve and his crew did an amazing job turning my fag-packet designs and downloaded images into a proper, wonderful sound proof garden building, concrete external & rockwool cavity He’s a an old-school builder who does things the right way. His approach and mentality are always “how are we going to do this” rather than “I can’t do this,” I picked Steve on price and previous work. He came in middle price wise and was fair, it’s safe to say it was the right choice. He was left to his own devices, worked through all sorts of weather, and although the job took a little longer than expected because of that, he stuck firmly to his original quote. Although steve didn't know at the time, the garden room was my test for both quality, work ethic and trust, and Steve passed with flying colours. On the back of this, I’ve now commissioned him to build me a two-storey extension. I think I’ll buy him his own coffee machine for that project though! ;-) Thank you, Steve
Bischell Construction Limited
Rating: 4.9 out of 5
Extension Builder in Uxbridge
Design & Build projects that squeeze more out of every pound spent. We’ll deliver an outcome for you that looks a lot more expensive than it really is. It will be tailored to your lifestyle, designed for your senses and fine-tuned to minimise lifetime costs. If you have an eye on value, or looking for maximum ROI, we’ll deliver more for less. It’s about smart design and construction, so the result gives you more performance, better quality of life and a stronger return from your budget.
Get in touch
Latest review:
Architecture- 27 Jul 2026
Very friendly, professional and trustworthy. Really took his time when he came to assess my walls and gave a very detailed explanation and highlighted all risks. Good communication, I would use him again
ZENZAR CONSTRUCTION
Rating: 5 out of 5
Extension Builder in Uxbridge
🏠We take on everything from the smallest jobs to the largest projects, delivering the same level of care, quality, and attention to detail every time. ⚒️With experience in the industry since 2015, we’ve built a strong reputation for reliability, craftsmanship, and customer satisfaction. Over the years, we’ve provided clients with a wide range of services tailored to meet all their needs—no matter the size or complexity. 💭Whatever you have in mind, our skilled professionals are dedicated to bringing your vision to life with precision and care. From initial ideas to the finished result, we work closely with you every step of the way.
Get in touch
Latest review:
Plumbing- 24 Jul 2026
Great work
Corneliu Cauneac
Rating: 5 out of 5
Extension Builder in Uxbridge
I am experienced, hard working and forward thinking. I do not spread myself thinly and ALWAYS finish a project promptly once started. I pay close attention to detail and discuss all aspects of the job with my clients prior to starting to make sure we are always on the same page.
Get in touch
Latest review:
Corneliu undertakes tiling work for me. He is a good worker and he makes a perfect job. He has worked for me for over a year. I am very happy with his work and only use him. I would recommend him very much.
Fine Deco Group Limited
Rating: 5 out of 5
Extension Builder in Uxbridge
Fine Deco Builders was established a decade ago on the pillars of excellence, integrity, and innovation. We bring your vision to life with our extensive experience in the construction industry, offering a wide array of services including new builds, garage conversions, loft conversions, renovations, and extensions. Additionally, our sister company specialises in tiles, flooring & carpets, offering exclusive discounts. Our mobile showroom equipped with thousands of samples, brings the selection process to your home, making it easy and stress-free.
Get in touch
Latest review:
I would highly recommend Fine decor builder whether it’s new build, renovation or extension . His team's expertise and attention to detail transformed our 1955 Victorian build into modern functional and beautifully area. Their professionalism and attention to detail were evident throughout the process. We were able to celebrate in our new space with family and friends even better than we pictured.

3.9

Top rated Extension Builders

Our Extension Builders in Uxbridge, are rated 3.9 out of 5 based on 14 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 Uxbridge?

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

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

What are the hourly rates of extension builders in Uxbridge?

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

Find extension builders in Uxbridge with MyBuilder

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

Step 2: Compare different extension builders in Uxbridge

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

Step 3: Hire Uxbridge extension builders with confidence

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

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

What to ask a Uxbridge extension builder before hiring?

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

An extension builder in Uxbridge 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 Uxbridge 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 Uxbridge?

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 Uxbridge 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 Uxbridge 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 Uxbridge

Can an extension builder in Uxbridge help with planning permission?

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

Many Uxbridge 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 Uxbridge help with materials and finishes?

Yes, most extension builders in Uxbridge 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.