Extension Builders in Watford

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.5 (11 reviews)

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Some of our top rated extension builders in Watford

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M&S Building Services
No reviews yet
Extension Builder in Watford
I am a sole trader builder for 20 years experience.I covered most Aspects in building extension loft conversion and repairs pvc windows and doors kitchen bathroom painting and decorating and many more
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Safe Rexel Ltd
New on MyBuilder
Extension Builder in Watford
We turn visionary designs into enduring, award-winning buildings – trusted by architects, developers, and clients across London and the UK. As a leading construction specialist, we deliver complex, high-quality residential, commercial, and mixed-use projects, recognised nationally for exceptional build quality, technical skill, and collaborative delivery. Our work has earned prestigious RIBA Awards – including landmark projects Barretts Grove (RIBA London Award & RIBA National Award 2017) and Clerkenwell Close (RIBA London Award & RIBA National Award 2018, Stirling Prize Shortlist 2021) – projects celebrated for innovation, craftsmanship, and outstanding contribution to the built environment Why Choose Us? 🏆 Proven Award-Winning Expertise – Our track record on RIBA-winning projects proves we deliver quality that stands up to national scrutiny. 🛠️ Technical Mastery – Specialists in complex builds, heritage-sensitive sites, innovative materials, and architecturally demanding designs. 🤝 Collaborative Approach – We work seamlessly with architects, engineers, and clients, ensuring design intent is protected and enhanced at every stage. ⏱️ On Time, On Budget – Rigorous planning, clear communication, and reliable delivery.
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George Professional Building
No reviews yet
Extension Builder in Watford
I have more than 30 years of experience. Worked in the US for 10 years and have built homes from scratch, including plumbing and kitchen fittings.
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PBLO LTD
No reviews yet
Extension Builder in Watford
I am an experienced and reliable tradesperson with a strong track record of delivering high-quality work on time and within budget. I take pride in my attention to detail, clear communication, and professional approach, ensuring every project meets the client’s expectations. Whether it’s a small repair or a large extension, I’m committed to providing honest advice, skilled craftsmanship, and a friendly service from start to finish.
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EJR Pro Build
Rating: 4.9 out of 5
Extension Builder in Watford
Hi I'm Elliott from EJR Pro Build. We are wall & floor tiling contractors/wet room specialists We also offer a range of services from full design and build to general carpentry we are fully qualified Builders & tilers CSCS registered and health & safety trained all work is fully quaranteed & insured
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Latest review:
Extensions- 1 Jun 2022
We are absolutely thrilled with our extension. Elliot and the team completed all elements of the project, which included numerous steels to replace existing supporting walls and the re-fit of our existing kitchen +new kitchen fit out. The work is finished to a very high quality and far exceeded our expectations. Product selections such as doors, windows and tiles were proposed by Elliot and were exactly what we wanted. Elliot and the team were professional and a pleasure to work with and we would highly recommend them.
Albi
No reviews yet
Extension Builder in Watford
I operate from 23 years locally and abroad in the construction sector/industry. More specifically, I have an extended expertise in: -painting/decoration -tiling -extensions -plastering -roofer -handyman -wood work. Depending on the type of the work/situation, I have the capabilities to make a combination of more than one at a time of the above and/or other directions.
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A & S construction
No reviews yet
Extension Builder in Watford
Mitchell Dougall Company : A & S construction Painter/decorator We are a family run company with over 40years of experience between the team. We are Based in bracknell and work in and around the area and are willing to travel for all painting / decorating works. We pride ourselves on a professional job upholding all of our works to the highest of standards! With no job being too big or to small! all works will be carried out to the best standards and highest of quality. for any work you would like to be done please get in contact! Thanks A&S
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NSV HOMES LTD
No reviews yet
Extension Builder in Watford
NSV Homes Ltd is a premier residential construction and procurement firm based in Dagenham, serving East London and the Home Counties. Unlike standard builders, we operate a Direct-to-Manufacture Supply Chain, allowing us to deliver high-specification renovations without the "middleman" markups. With over 15 years of experience, we specialise in Full-House Renovations, Extensions, and New Builds, bridging the gap between design and delivery. Our Competitive Advantage: We hold direct trade accounts with the UK's leading manufacturers, ensuring our clients access premium materials at exceptional value: Kitchens: Direct Partner for Burbidge & Son, & Omega PLC, more. Lighting: Specified Partner for Sensio Lighting, more. Flooring: Direct Partner with Victoria Carpets, Riviera Home, and Hugh Mackay, more. Joinery: Bespoke media walls and cabinetry via HUX London, more. Core Services: Rear Extensions & Structural Alterations: From groundworks to steel sign-off. High-Spec Kitchens & Bathrooms: Supply and installation using our direct procurement channels. Full Property Refurbishment: Project managed from concept to completion. Media Walls & Bespoke Joinery: Custom-built using direct-supply materials. Why Choose NSV Homes: We combine the reliability of a family-run contractor with the buying power of a procurement house. We don't just build; we source, supply, and install the highest quality finishes for your home.
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AJ Partners Ltd
Rating: 5 out of 5
Extension Builder in Watford
We are family business working in different levels of building industry. Refurbishment, supply and fit and installation service. Carpenter, Joinery, Tiling, Plumbing, etc. Supply or supply and fit, refurbish and new build We completed various projects in London and surrounding areas We listen to our clients needs and liaise with you throughout your project to ensure that the project finishes on time and on budget. Trades 15 Years of experience and good reviews leads our work.
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Latest review:
Kitchen Fitting- 7 Jun 2020
We liked Alex from the first meeting and the first impression was spot on. Alex did an amazing job on our kitchen, which was half initiated by another tradesman. He reviewed the work and fixed many issues, always explaining and communicating well. Our kitchen had to be adapted and had some non standard cabinets but Alex was able to do all the additional features we asked for and with a great result. He also recommended some design changes which we agreed to and love. He finished the work, reviewed everything and signed off, always with a smile which is a plus. Definitely highly recommended and we will call him again in the future for sure. Thank you Alex!
Briggsys carpentry services
Rating: 5 out of 5
Extension Builder in Watford
At briggsy's carpentry and building services ltd we have all the trades you may need for your project from bricklayers to carpenters to electricians, plumbers etc, over the years ive built a great well trusted team and have many years of experience in construction. With an nvq level 6 in construction site management and a smsts qualification im used to running building sites and project managing jobs as ive done it for about 17 years i also have an nvq level 3 in advanced carpentry and a level 2 in slinging and signalling a crane so ive had experience all over. when we take on a project i ensure the customers happy all the way by checking in regularly and making sure works are going to plan. weve got a very good reputation and many good references at hand if requested from previous clients. good communiation with clients and high quality workmanship is our main advantage which we think is very important in the building trade. we look forward to working along side you thanks chris (director)
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Latest review:
Carpentry- 8 Jun 2021
Chris has been excellent right the way through my project, excellent communication and attention to detail. I highly recommend Chris and would definitely employ him again!
Grand innovations surrey ltd
No reviews yet
Extension Builder in Watford
Our team of highly experienced professionals offer top-notch building services to help you achieve the home of your dreams whether your looking make major structural changes, add a new extension or upgrade your homes features we’ve got you covered. At grand innovations, we believe in using only the highest quality and sustainable materials to ensure that your home is unparalleled and meets or exceeds your expectations, we pride ourselves on our attention to detail and our commitment to delivering exceptional workmanship every time. You will find no upfront, large deposits required, here at grand innovations we offer a simple payment plan structured and tailored for each individual client so you can track the progress and the budget of your project with confidence. We would love to book you in for a discovery call to discuss your current or future plans for your project.
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Bowmont building services
No reviews yet
Extension Builder in Watford
We are a building and construction company with over 25 years experience. We can undertake complete refurbishment of residential properties, including structural alterations, extensions and substantial conversions. We provide a complete end to end service & professionally manage projects working with (if required) your architects. Whether it is a small extension, refurbishment or a major reconfiguration we have the experience and capability to complete the works to the highest standards.
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Best Bond Brickwork & Construction
Rating: 5 out of 5
Extension Builder in Watford
I'm a fully qualified bricklayer with 12 years in the industry.Im Experienced in all aspects of commercial and residential types of brick/block work. Capable of completing extensions, garden walls,patios, pointing, fencing and plastering. I am a skilled tradesman with a good work ethic and work with a great team .Im happy to work with the client and get the job done to the highest possible standard and in the fastest time.
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Latest review:
Bricklaying- 27 Aug 2021
Mitch and his team were efficient at building the retaining wall in my garden, working on a Saturday to get the job done. The work was completed to a very high standard. The wall had to be left slightly unfinished in order for other works to happen first, so Mitch promised to come back and finish off the wall at no additional cost later in the week. After some chasing, Mitch came back to finish the wall by himself the following Saturday. This was also completed to a high standard. We would highly recommend Mitch’s service for an efficient, high standard output.
LSTAR CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Watford
From the first brick to the final detail – we turn your vision into reality.
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Latest review:
When I was looking for quotes, Lukasz was the only builder who provided a fully detailed breakdown. From the start, he was professional and punctual, arriving exactly on time for our first meeting. He offered great recommendations on the best ways to approach the refurbishment and was flexible enough to let me source my own materials. Most importantly, he provides a warranty which he has already honored to fix a minor fault from another professional. It has been a pleasure trusting Lukasz and his team with my full house renovation.
Yurt Interior Ltd
No reviews yet
Extension Builder in Watford
Yurt Interior provides high Turkish quality as a company standard. Our motto is "Quality is being perfect where nobody sees."
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Nick layton
Rating: 5 out of 5
Extension Builder in Watford
Here at City limits construction we offer all aspects of building work. From ground work and brickwork to kitchens and interiors and even landscaping and fencing. Please get in touch to discuss your needs
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Latest review:
Conversions - General- 15 Feb 2025
Really professional. Quick, clean, competitively priced. Definitely recommend

3.5

Top rated Extension Builders

Our Extension Builders in Watford, are rated 3.5 out of 5 based on 11 reviews from customers like you.

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What types of services are offered by local extension builders in Watford?

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

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

What are the hourly rates of extension builders in Watford?

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

Find extension builders in Watford with MyBuilder

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

Step 2: Compare different extension builders in Watford

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

Step 3: Hire Watford extension builders with confidence

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

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

What to ask a Watford extension builder before hiring?

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

An extension builder in Watford 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 Watford 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 Watford?

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 Watford 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 Watford 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 Watford

Can an extension builder in Watford help with planning permission?

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

Many Watford 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 Watford help with materials and finishes?

Yes, most extension builders in Watford 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.