Extension builders in Waltham Cross

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.8 (16 reviews)

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Some of our top rated extension builders in Waltham Cross

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Firtree building services ltd
Rating: 5 out of 5
Extension Builder in Waltham Cross
Firtree building services ltd Has been trading since 2011 and specialises in residential extensions and loft conversions.
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Latest review:
Extensions- 13 Nov 2020
Matt and his team recently completed a fantastic job on our kitchen/extension and bathroom refurb. All of his team were great to work with and have on site, which really helped in what was at times quite a stressful space to remain living in. They always left the space as clean and tidy as possible which was appreciated. Matt specifically, was really flexible with us as we had delays in getting permissions and also were a little unclear on exactly what finish etc we wanted on things. He gave us genuine advice on everything from underfloor heating to the skylights and doors. We are so pleased with the finish of everything from the tiling and paving to the bathroom. Can't recommend Firtree enough, if we look to do the loft we will be straight back in touch. Many thanks to all, but special thanks to Matt, Sean, Dan and Joe who held it all together.
B&B London Construction LTD
Rating: 5 out of 5
Extension Builder in Waltham Cross
Our team construction is a specialist in loft conversions, house extensions, refurbishments and lot more.
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Latest review:
Benny and his team completed our loft conversion in 2022 and we've been very happy with the work carried out. From the beginning of the quote process through to completion, Benny and his team were extremely professional, hardworking and reliable. The work was finished on time and as quoted. Benny was happy to offer advice on what we were looking for and adapt elements as we progressed. The quality of the work was excellent and his team are clearly experienced and thorough. We're really enjoying the additional space and would highly recommended B&B to anyone considering using them.
Donema Construction Vision Limited
Rating: 4.5 out of 5
Extension Builder in Waltham Cross
Donema LTD is a family run, friendly and reliable construction company and we specialise in all trades, carrying all work type (no matter domestic or commercial) with years of experience. We work hard to maintain our reputation as a trustworthy building company and we are always happy to provide a free quote for any of your upcoming projects. On top of that, we offer our clients to use our traders discounts with Victoria Plum, Howdens, Top Tiles and more.
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Latest review:
Bathroom Fitting- 7 Sep 2026
Domas and his team did a fantastic job renovating our bathroom — The scope covered a complete strip-out, replumbing, rewiring, full wall/floor tiling and new sink, toilet and shower enclosure installation. Their communication was good and pricing was fair. The work itself was carried out to a high standard, clean and professional throughout. Would happily recommend Domas and his team to anyone looking for a reliable, skilled contractor, and wouldn’t hesitate to use them again.
Nani Builders Ltd
Rating: 4.8 out of 5
Extension Builder in Waltham Cross
Nani Builders gives you high quality of work and competitive quotes. We’re operating in construction for about 16 years.We work really hard and we have a great reputation with our clients. We cover all aspects of property no job is big or small!
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Latest review:
Extensions- 27 Feb 2023
Nani was extremely professional throughout the kitchen renovation and went above and beyond to ensure everything was perfect. Nani is extremely knowledgeable and has a team of highly skilled individuals to carry out the job to a high standard - this includes building the downstairs toilet and utility room. I highly recommend Nani for any building work.
Omerta Builders Limited
Rating: 5 out of 5
Extension Builder in Waltham Cross
We undertake many jobs and specialise in extensions, loft conversions, painting and decorating, bathrooms, kitchens, and plumbing and electrical works. We work all over London, and have even completed jobs outside of London too. We take pride in the quality work we deliver, and make sure customer satisfaction is at the forefront of what we do. Combined within the company we share 30 years of construction experience.
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Latest review:
Extensions- 11 Jun 2019
Very good builders. Came on time every day and finished work on time. Very reliable and trustworthy. We had quite a few hiccups along the way but they always managed to find a solution. Would definitely recommend them and use them again.
east herts projects
Rating: 5 out of 5
Extension Builder in Waltham Cross
We are a small building company, I have 30 years experience as a builder /bricklayer. my main work is extensions and brickwork.
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Latest review:
Repointing- 16 Sep 2024
A great job re pointing the DPC around our bungalow, came when he said he would and had a very pleasant manner and well priced too.
E&E construction
Rating: 5 out of 5
Extension Builder in Waltham Cross
With over 18 years of industry experience, our construction company specializes in high-quality house extensions and loft conversions across London and Essex. We are committed to transforming homes with expert craftsmanship, tailored design solutions, and reliable project management from start to finish. Whether you're looking to expand your living space, increase property value, or bring new life to your home, we deliver outstanding results that reflect your vision and meet the highest standards of construction excellence.
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Latest review:
Fencing- 9 Sep 2023
Ervin was polite, communicated well and worked hard to get the job done. Would hire again.
Noli Antzara
Rating: 5 out of 5
Extension Builder in Waltham Cross
I’m Noli Antzara, a North London tradesman with 37 years of experience. I started working alongside my father at 18 and have spent my working life developing my craft. My main specialities are tiling, paving and brickwork. I also take on bathroom and kitchen tiling, slabs, garden work, blockwork, extensions and painting. Whether it’s a small repair or a larger project, I give the same care and attention to the finish. I prefer to visit the property, listen to what you want and provide a clear quote before starting. Depending on availability, I can often begin within one or two days. I’m based in North London and can travel approximately 60–70 miles for the right job. I know that inviting a tradesman into your home takes trust. I treat every property with respect, protect the areas I’m working in and keep the space as tidy as the job allows. I communicate clearly, take pride in the details and want you to feel comfortable raising questions along the way. After 37 years, I still care about improving and doing work I’m proud to put my name to. My aim is simple: to deliver a quality finish and leave every customer feeling that their home was in good hands.
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Latest review:
Tiling- 6 Oct 2026
I couldn’t recommend Noli highly enough. He was incredibly friendly, professional and reliable from start to finish. His quote was very competitive and included all the materials. After seeing the fantastic job he did on my front garden, I wish I hired him before. His attention to detail and quality were impeccable. I’m genuinely grateful for his excellent service and have no doubt that Noli will be my first and only choice for any future projects. HIGHLY RECOMMENDED!
G&J Construction
Rating: 5 out of 5
Extension Builder in Waltham Cross
Hi, my name is Jurgen and I have been working in the building trade for over 15 years. At G&J Construction we have a small but hardworking team who is specialised in : • Extensions • Loft Conversions • Bathrooms • Kitchens •All General Building Works We have done lots of extensions and loft conversions along with general buildings. Contact us for a free quotation and to advice you on your project. We look forward to working with you!
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Latest review:
Restoration & Refurbishment- 31 Mar 2025
J&G did a fantastic job of renovating my kitchen, including removing the old units, altering a chimney breast according to Planning Permission guidelines, plastering, painting, moving the radiator, laying a new floor, running new electrics and fitting new units and appliances from Wren. Jurgen is an excellent communicator, always taking the time to explain what was going on and answering questions. I particularly appreciated his honesty about the structural challenges of altering an Edwardian chimney breast, proposing alternative solutions which were cheaper and less disruptive. The quality of the finish was really good - from the electrician and plumber to plasterers and painters, all his team took great pride in their workmanship, and were all polite and friendly. Although the overall length of the project got extended, Jurgen made sure all the snagging was thoroughly completed. Overall, highly recommended and a pleasure to deal with. I'd definitely hire Jurgen again.
Vasilis Bachos
Rating: 5 out of 5
Extension Builder in Waltham Cross
My name is Vasilis and I am an enthusiastic individual who loves what I do. I have 35 years of experience in construction and I am ready to take on any requests! One thing to keep in mind, I don't speak very good English; however rest assured I have way to tackle that minor inconvenience!
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Latest review:
Kitchen Fitting- 7 Oct 2026
Absolutely brilliant service from start to finish. He fitted my new kitchen and I’m extremely happy with the quality of the work. Very professional, reliable and hardworking, with great attention to detail.
WOODHOUSE BUILDERS LIMITED
Rating: 4.8 out of 5
Extension Builder in Waltham Cross
Welcome to Woodhouse Builders Ltd, we cover all aspects of property maintenance and no job is too small or big for us. If it’s a small decorating job or full property renovation , loft conversion or extension , we are here to help and provide the best services possible . Our success is built on providing the best services and ensuring that all our customers are happy with our services.
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Latest review:
Extensions- 8 Aug 2026
Art and his team were great. He is such a nice person, was flexible and listened. The job was completed on time and within budget. I would hire Art again for sure.
GSrenovation
Rating: 4.9 out of 5
Extension Builder in Waltham Cross
We have 25 years of property renovation .During the last 15 years GSrenovation has specialised in fitting and renovating bathrooms, kitchens and extensions . We believe that our success stems from our exacting professionalism and true enjoyment of our work. We take as long as is needed to help customers from design through to completion. For peace of mind GSrenovation also provides 5 years guarantee with each installation. Sensible prices. Free quotation and advice.
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Latest review:
Kitchen Fitting- 10 Jul 2024
George has done an excellent job. He is highly recommended, and his prices are reasonable.
L R Harvey (Builders) Ltd
Rating: 5 out of 5
Extension Builder in Waltham Cross
I am a local builder with 35 years experience in the trade. I am reliable and trustworthy with a reputation for being clean & tidy. I specialise in brickwork, hard landscaping, extensions from start to finish & internal alterations. I work closely with all my clients to ensure that they are pleased with the results.
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Latest review:
Groundwork & Foundations- 5 Mar 2021
Very professional and all round lovely person punctual, professional and honest Would highly recommend L R Harvey builders, don’t hesitate give him a call.
AVR Construction
Rating: 5 out of 5
Extension Builder in Waltham Cross
I have a 10 years in construction industry ( landscaping) dancing paving foundations and many more For a fare quote contact me .
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Latest review:
Groundwork & Foundations- 5 Oct 2026
I'm very happy with the job that Jon did. Communication was good. The work was completed quickly and to a high standard. I'd use AVR again.
AMG LONDON LTD
Rating: 5 out of 5
Extension Builder in Waltham Cross
AMG places great emphasis on the importance of up to date methods of design and construction. As a key player at the forefront within the market place we specialize in building Extensions, Loft conversions, Drylining, ceilings, painting and decorating to complete internal building fit out.
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Latest review:
Stefan did an extension for my flat from the installation of structural steel, to the roof, and demolition. To building the shell and all cosmetic work inside. I am very happy with the work. Time keeping was good, pricing was good he was open and honest throughout, he was very tolerant and easy to work with. Always positive and willing to help if there were any issues. He would help resolve any issues in the quickest and best way possible. Very happy. I would happily recommend him.
O.L.T.O CONSTRUCTION Ltd
Rating: 5 out of 5
Extension Builder in Waltham Cross
we are able to undertake any work that has to do with the interior and exterior of your home. Responsibly!
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Latest review:
They did an amazing job of our extension from initial quotation right the way through until project completion. Communicated very well and all of the team were respectful and hard working throughout each stage of the project. Would highly recommend!

4.8

Top rated Extension Builders

Our Extension Builders in Waltham Cross, are rated 4.8 out of 5 based on 16 reviews from customers like you.

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

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 Waltham Cross 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 Waltham Cross who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Waltham Cross?

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

Find extension builders in Waltham Cross with MyBuilder

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

Step 2: Compare different extension builders in Waltham Cross

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

Step 3: Hire Waltham Cross extension builders with confidence

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

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

What to ask a Waltham Cross extension builder before hiring?

Before hiring an extension builder in Waltham Cross or extension building company in Waltham Cross, 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 Waltham Cross?

An extension builder in Waltham Cross 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 Waltham Cross 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 Waltham Cross?

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 Waltham Cross 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 Waltham Cross 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 Waltham Cross

Can an extension builder in Waltham Cross help with planning permission?

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

Many Waltham Cross 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 Waltham Cross help with materials and finishes?

Yes, most extension builders in Waltham Cross 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.