Extension Builders in Whetstone

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (16 reviews)

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Some of our top rated extension builders in Whetstone

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Emzy O’Neill
Rating: 5 out of 5
Extension Builder in Whetstone
This is a family business that has been built up primarily through word of mouth. We pride ourself on the quality of our work and providing an outstanding finish. We carry out all types of renovations, extensions and loft conversions.
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Latest review:
Anna was very professional in her job and very up and doing. Even though she had a little baby at the time of the work but that did not deter her from doing her work well and on time.
We will do
Rating: 5 out of 5
Extension Builder in Whetstone
We are here with a lot of experience to help you for any construction job as soon as possible at the best possible price.
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Latest review:
Kitchen Fitting- 10 Oct 2024
Farhoud and Sam did a great job, really fast. Thanks, Guys!
David
Rating: 5 out of 5
Extension Builder in Whetstone
We are a professional construction and electrical services company, specialising in safe and reliable electrical work for homes and businesses. We also offer expert bathroom fittings, home extensions, installations, and new builds. Our team combines technical skill with attention to detail to deliver projects on time, on budget, and to the highest standards.
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Latest review:
Electrical- 28 Mar 2026
David done a brilliant job, came on time, very professional and reasonable price! Thank you
Building services
Rating: 4.7 out of 5
Extension Builder in Whetstone
We are specialists in Loft conversion, extension, refurbishment, carpentry and decorating projects over the past 20 years, we provide all type of general building services & refurbishment projects with our skilled and reliable team. We are a company you can trust for all Commercial, Domestic services. Contact us for Free Quotation!
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Latest review:
Carpentry- 7 Aug 2015
Excellent service and very professionally carried out. Rahim came round at a time that was convenient for me and charged a very fair price for the job. Would certainly recommend.
MYCO Contractors Limited
Rating: 5 out of 5
Extension Builder in Whetstone
I am an experienced and fully insured builder. On average I and my team build and renovate 5 extensions per year. Our current or old clients are always ready to share positive feedback about our work. We work off the ready plans which are usually prepared by the clients themselves and approved by the local authority. As of now (30/03/2023) my availability to start the new project is late April or early May. Please get in touch and I will be happy to assist.
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Latest review:
Extensions- 4 Aug 2020
On a cold November evening, Tony and his team turned up to provide a quote and within a week this was received. The quoted price came in the middle of the pile, which was a good start and aligned closely to the ballpark figure I'd received from a friend who was also in the trade. We then visited a site they were finishing off, and Tony had the confidence to ask us to speak to the client without him there and they gave us the confidence to proceed. They started in January 2020 and rapidly moved through the works and engaged closely with my architect, Structural engineer and building control and proceeded based on their recommendations strictly. We lived in the property as build progressed and the team ensured that the site was secure every evening and we were safe. As COVID-19 hit and we went into Lockdown, the team continued to come and work (we were separated from them as the house was boarded up) and the only challenge was getting supplies. Tony scoured all over London, picking up items as best as he could and work continued. Once they'd broken through into the old part of the house they continued to progress rapidly and showed utter professionalism. The team lead's attention to detail is impressive, and he gave great recommendations on what would be the right approach when we were laying out features such as window sizing and lighting. The standard of work is excellent and I would highly recommend them.
D&E Smart Building Solutions Ltd
Rating: 5 out of 5
Extension Builder in Whetstone
Loft conversion. New or refurbished extension. All Carpentry work. New decking or refurbished. Brick walls front of the house, or new building. New or refurbished bathroom, Tilse, Garden, Kitchen, Wood floor, Plumbing with certificate, Electrical with certificate, and much, much more..
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Latest review:
Bathroom Fitting- 7 Mar 2022
Daniel was great and we were impressed by the level of care and detail in his work. Would use him again and recommend to friends.
Alban's A Team Solution
Rating: 5 out of 5
Extension Builder in Whetstone
Hi my name is Alban I am a builder. I am honest and hardworking person. I have 18 years experience on general building trade. I undertake all building work, new build houses, new extensions, loft conversion. We also do all refurbishment interior and exterior. All structure and good knowledge of architectural plans.
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Latest review:
Carpentry- 20 Oct 2017
nice guy, good comms, very good cartentry
ZENZAR CONSTRUCTION
Rating: 5 out of 5
Extension Builder in Whetstone
🏠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.
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Latest review:
Plumbing- 24 Mar 2026
Very quick response and came within hour and fix the problem..really good handyman..will contact in future as well .
LH Builders & Plumbers
Rating: 5 out of 5
Extension Builder in Whetstone
Hi we do all building works been in the business for 25 years we are a family run business.all our tradesmen are fully qualified.we aim to please our customers as word of mouth is essential to us No job to small. We also do camera drain inspections and leak detection with thermal imaging. Leah is our assistant and replies to emails and sends us the job leads while we are working
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Latest review:
Plumbing- 16 Jun 2026
Gareth was superb, thorough, friendly, and professional. Costs were clear in advance and he went above and beyond to not only repair the problem, but he also kindly checked the rest of the property and have great advice!
Sorin Dobrila
Rating: 5 out of 5
Extension Builder in Whetstone
I've been in trade all my life, and most of the time engaged in: 1. Property Renovations and Remodellings – involving extensions, conversions, repairs and refurbishment works on residential properties. 2. Small/middle size commercial projects – involving repairs and refurbishment works for commercial clients.
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Latest review:
Extensions- 25 Aug 2021
Having had bad experiences in the past with other builders, this time we tried to do our homework properly before hiring someone. We couldn't have chosen a more competent and professional builder! We obviously asked around and had many quotes (some ridiculously expensive, others didn't even seem to understand what we wanted to do) but Sorin immediately impressed me with his detailed and fair quote, knowledge and lots of suggestions (he's the kind of guy that immediately gives you the impression that he knows what he's talking about). We encountered some issues during the works (which is to be expected if you didn't build the place yourself) but Sorin and his team did an amazing job and always gave us regular updates. End result? Work completed on time and a new construction that is exactly what we asked for (plus other things here and there that he kindly sorted while he was on site!)
Victoria Urban Contractors LTD
Rating: 5 out of 5
Extension Builder in Whetstone
we pride ourselves on being builders and contractors that are synonymous with high-quality, skilled craftsmanship. We provide a full range of building services in London, from renovation to restoration and site management. No matter how big or small your project is, our approach is always the same – focused, professional and with true attention to detail.
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Latest review:
Extensions- 18 Sep 2024
I looked at 5 quotes and was so happy to have chosen Elvis and his highly experienced team. They did an excellent job of building a new 11sq meter garden rear extension. This was a bit complicated project because it’s a listed house. Elvis and his team were hardworking, always responsive and came up with great solutions when necessary. I am very pleased with the high quality end result. I would use them again and can't recommend them enough! Great job done
RMK Builders
Rating: 5 out of 5
Extension Builder in Whetstone
We are a professional construction team with many years of experience in the field. Our priority is the client and the quality of the work performed. We invite you to work with us.
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Latest review:
Kitchen Fitting- 12 May 2026
Great job and good customer service from the gentlemen. Would definitely recommend
CRAFTSMAN CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Whetstone
Welcome, and thank you for choosing us for your construction needs. We want you to feel completely comfortable and at ease when speaking with us. No question is too small or too big — we are here to listen, guide you, and support you at every step of your project. Our goal is to create a peaceful, respectful, and open environment where you can freely share your ideas, concerns, and expectations. We look forward to working with you and turning your vision into reality. Please feel free to reach out anytime. We are always happy to help.
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Latest review:
Extensions- 3 Feb 2026
The job went perfectly. The Builders arrived on time and finished all the work in two days the work was completed to a perfect standard he even cleaned up some of the mess that previous Builders had left behind, their work. I can say without hesitation is exemplary. I would highly recommend hiring Craftsman Construction Limited
Eagle Eye Construction Ltd
Rating: 5 out of 5
Extension Builder in Whetstone
At Jon Davids Construction, we are dedicated to delivering high-quality residential construction services built on trust, craftsmanship, and attention to detail. From renovations and remodels to new home projects and general construction services, we work closely with homeowners to bring their vision to life with results that are both functional and built to last. Our team takes pride in professional workmanship, dependable service, and clear communication throughout every stage of the project. We understand that your home is one of your biggest investments, which is why we focus on quality, reliability, and customer satisfaction in everything we do. At Jon Davids Construction, we believe in building more than homes we build lasting relationships through honesty, integrity, and exceptional service.
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Latest review:
Conversions - General- 12 Oct 2022
Very happy with the quality of work. Would highly recommend Jon and his team. Very professional, cleaned after themselves everyday. thank you very much
A J Keating
Rating: 5 out of 5
Extension Builder in Whetstone
Hello we are a family firm based in north London. With more than15 years experience doing mostly exterior work. We enjoy difficult jobs and like a problem to be solved. Retaining walls, drainage, foundations are our bread an butter.We pride ourselves on a great job at a fair price.
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Latest review:
Groundwork & Foundations- 30 Aug 2022
Axel & his team have done a huge amount of work for us through 2022. They started by building the foundations, and then also built the block walls and the structure for the roof. They also constructed an entire extra timber framed shed. After more than four months of working for me constantly I can say that I'm very happy with the quality and speed of Axel's work. He has worked through all the work we have given him, and all the extra issues that came up, with a pragmatic and competent approach. The site today is unrecognisable from when he arrived (he also removed several tonnes of soil for us etc), and I would hire him again without reservation.
GNG Building Services
Rating: 4.8 out of 5
Extension Builder in Whetstone
With our extensive experience in home improvements, refurbishments, and building work, no job is too small or large. We've helped countless homeowners across our local area with creating their dream home. Get in touch today to see how we can help you. In case just a single room refurbishment isn't enough and you want to renovate your entire home then look no further than GNG Building Services Ltd. We have the skills to renovating your home a breeze!!!
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Latest review:
Hard Flooring- 21 Sep 2021
Very pleased with the service provided by Nick . Our hard wood flooring in dining area was badly damaged but it was replaced and restored very professionally to its original glory. He is very nice, polite person and very easy to communicate. He is an excellent carpenter and if needed I will use his service again.

3.9

Top rated Extension Builders

Our Extension Builders in Whetstone, are rated 3.9 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 Whetstone?

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

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

What are the hourly rates of extension builders in Whetstone?

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

Find extension builders in Whetstone with MyBuilder

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

Step 2: Compare different extension builders in Whetstone

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

Step 3: Hire Whetstone extension builders with confidence

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

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

What to ask a Whetstone extension builder before hiring?

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

An extension builder in Whetstone 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 Whetstone 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 Whetstone?

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 Whetstone 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 Whetstone 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 Whetstone

Can an extension builder in Whetstone help with planning permission?

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

Many Whetstone 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 Whetstone help with materials and finishes?

Yes, most extension builders in Whetstone 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.