Extension Builders in North Finchley

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

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

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 North Finchley

3360 Results

Sort by:

Mario Services
Rating: 5 out of 5
Extension Builder in North Finchley
Mario & Alex Construction LTD specialise in construction and building services, complete property refurbishment, house extensions and loft conversions. Provides unmatched customer service. Our commitment to small,hudge integrity, providing the highest value and satisfied customers, has been the ingredient that has fueled our growth from the beginning. We ensure that all our work is professionally managed so that the result is of outstanding quality, cost-effective.
Get in touch
Latest review:
Bathroom Fitting- 20 Jan 2023
We highly recommend Mario & his team. They fitted a new kitchen & bathroom to a really high standard within a short, timeframe. They work hard, are friendly, professional & honest, my neighbour even commented on how considerate they were! Upon first meeting Mario we were impressed by how organised he was. He arrived on time with the description we’d posted on my builder & went through it methodically. We had A LOT of questions! He answered all of them & didn’t rush us. We received a competitive quote within a day as promised. It included everything we discussed & he quickly answered our follow up questions. We wanted an accurate idea of the cost of electrical work & Mario arranged for his electrician to come & inspect/quote before we’d appointed Mario the job. Our kitchen & bathroom is complicated, with lots of difficult angles. Damp, unlevel floor, unlevel windows, a low ceiling were uncovered in the bathroom. Mario did well to identify solutions, giving us expert advice. Pipes were neatly chased into the wall. Underfloor heating & LVT, tiling, grouting & painting all done to a very professional finish. He kept us informed of progress, checked our preferences & was patient when we had supply delays, finding ways to ensure the job finished on time enabling us to move from our temporary accommodation back home in time for Christmas. He promptly fixed some minor issues after the job finished. We highly recommend Mario & would use him again.
MCT Developments Ltd
No reviews yet
Extension Builder in North Finchley
We pride ourselves in providing a full range of services, executed to the highest standards, from meticulous restoration of listed buildings to the creation of contemporary spaces. Over the years we’ve had the privilege of adding some of the London’s most iconic buildings from Hampton Court Palace to The Savoy Hotel, from Fortnum & Mason to The Connaught Hotel and the Royal Suite at The Mandarin Oriental Hotel to our portfolio. We are able to deliver on all aspects of work from extensions and loft conversions to full refurbishments. When delivering projects with specifications from the more modest to high end and complex, we work with our clients to ensure the highest level of quality and satisfaction. Driven by our core values of excellence, safety, integrity and innovation we continue to deliver an outstanding service for our clients, often exceeding expectations and always within budget. Whether it’s a new construction project, renovation, or sustainable building endeavour, we bring expertise, innovation, and dedication to every phase of the construction process.
Get in touch
JMP Consulting Engineers Ltd
Rating: 5 out of 5
Extension Builder in North Finchley
With nearly 30 years of experience, JMP Contractors & Engineers is a trusted, family-run company delivering high-quality construction across the UK. We specialise in bespoke garden rooms, combining timber frame expertise with modern design to create stylish, durable, and fully functional outdoor spaces. Whether you're after a home office, gym, guest suite, or creative retreat, our custom-built garden studios are designed around your needs—built to last and add real value to your property. We also offer loft conversions, extensions, renovations, and full structural engineering services. Every project is delivered with care, clear communication, and a commitment to excellence. You dream it. We build it.
Get in touch
Latest review:
Extensions- 21 Dec 2023
Great job and great after service. Highly recommended. Thank you team! Will use again :)
KBS Construction Services
Rating: 5 out of 5
Extension Builder in North Finchley
In our offer we have a wide range of construction services such as: • Extensions • Conversions • Renovations • Kitchens • Bathrooms-Washrooms • Property Maintenance • Handyman Service • Refurbishment • Brick work etc • Specialist Stone, tiling etc. • Painting & Decorating • Window fitting • Architecture Steel Fixing • Under floor Heating and many more
Get in touch
Latest review:
Restoration & Refurbishment- 8 Jun 2020
Kamil and his tiler have been excellent. He was able to do the work at short notice, he always turned up on time and stuck to his quote. The quality of the work is excellent with special mention of the tiling which would probably win a competition! Kamil remedied minor problems that occurred as the work was in progress ensuring that the completed work was first rate. I will certainly use Kamil again and have no hesitation in recommending him to others.
Artisan Transformation LTD
No reviews yet
Extension Builder in North Finchley
Artisan transformation is a UK based design and build company. We pride ourselves in customer satisfaction. We have over 12 years experience in all aspect of work ranging from designing bespoke furniture to entire house renovations, to landscaping and imprinting or paving. We’re happy to work with designers and architects. We work to the highest specification, we can work to pre-agreed budgets whilst ensuring to deliver on time to meet timescales.
Get in touch
Hillcroft Brickwork
No reviews yet
Extension Builder in North Finchley
Only recently joined MyBuilder. 30 years experience in construction. We are specialists in brickwork, groundworks and hard landscaping. We can provide a free no obligation quote. Jobs of any size taken on.
Get in touch
Taiz Builders
No reviews yet
Extension Builder in North Finchley
**🔨🏡 “Your Dream Home, Our Expert Hands!” 🏡🔨** Looking for top-notch craftsmanship that’ll make your home the envy of the neighborhood? You’ve come to the right place! 💪✨ we don’t just build – we **create magic**! From stunning bathrooms that feel like **luxury spas** 🛁 to flawless tiling, plumbing, and renovations that’ll make your jaw drop, we bring **passion, precision, and a whole lot of elbow grease** to every job. ✅ **Reliable & Punctual** – We show up on time, every time! ✅ **Top-Quality Work** – Because you deserve nothing but the best! ✅ **No Mess, No Stress** – We leave your space **sparkling clean**! ✅ **Affordable Prices** – Luxury look without the luxury price tag! Why settle for **ordinary** when you can have **extraordinary**? Call us today, and let’s turn your vision into **reality**! 🔧✨
Get in touch
Kevin Mateus
No reviews yet
Extension Builder in North Finchley
c
Get in touch
B&V HOME IMPROVEMENTS LTD
No reviews yet
Extension Builder in North Finchley
Home Improvements Company undertaking; Extensions, Loft Conversions, Refurbishments, Bathrooms, Kitchens as well as plumbing, electrical works and etc....
Get in touch
MCL Construction Solutions Ltd
No reviews yet
Extension Builder in North Finchley
Welcome to MCL Construction Solutions. With years of experience in the trade, we specialise in a wide range of services including: - New builds & Refurbishments - Extensions & Conversions - Mechanical & Electrical Works - Kitchens & Bathrooms - Commercial & Social Housing Projects We proudly serve London and the surrounding areas, offering high-quality workmanship, attention to detail, and a reliable service from start to finish. Building the Future, Restoring the Past. We work closely with our clients to plan and deliver projects that meet their needs, on time, on budget and with a professional finish. Let's plan you your project together.
Get in touch
J&J construction
Rating: 5 out of 5
Extension Builder in North Finchley
We have a skilled team to do the roofing and building, we do all kind of roof work like pitch roof Slate roof, glass fiber roof, felt roof, cold deck and warm deck and we carry the work to comply with the regulations and with the quality We also have skilled and professional workers to work in house extensions and loft conversions and full house renovations all other building work is undertaken like plumbing electric plastering rendering and painting
Get in touch
Latest review:
Roofing (Flat)- 20 Dec 2025
Professional quick, happy with the job, will definitely use them again
Leni Muca Builder
Rating: 5 out of 5
Extension Builder in North Finchley
My name is Leni I have 8 years experience on home improvements. Kitchens, Bathrooms, tiling, flooring, carpentry, electrical, plumbing, handyman. I guarantee a professional work to be done. My priority is to make clients happy with the work I do. I promise you will not be disappointed from Leni Muca Builder. Thank you.
Get in touch
Latest review:
Bathroom Fitting- 3 Dec 2020
10/10, would recommend to anyone. High quality of work, very helpful and punctual.
Ziad Khalil
No reviews yet
Extension Builder in North Finchley
I am a professional kitchen fitter and i have been working in this domain for 7 years now i do all kind of jobs and projects no job is to small and no job is to big I am okay to travel to the job and take every single job seriously
Get in touch
Vadym Kutsak
Rating: 4 out of 5
Extension Builder in North Finchley
I have 7 years in basement, underpinning, extension. Was working at company "Hughes design&build" Have good knowledge in job
Get in touch
Latest review:
Groundwork & Foundations- 5 Aug 2026
Vadym was very careful and considerate to drive the digger through a very narrow gap with no margin for error. He did an excellent job to dig out the section and tidy away the mess. I would recommend and hire again
AL&ENG HOME
No reviews yet
Extension Builder in North Finchley
AL&ENG HOME is a family owned business which takes there work seriously and makes sure customers are always satisfied and have the best experience when working with us. I’ve had a lot experience on the site, our team are perfectionists when it comes to doing and completing any project undertaken. With over 20 years experience.
Get in touch
GDR construction solution ltd
Rating: 5 out of 5
Extension Builder in North Finchley
GDR Construction Solution Ltd provides a wide range of construction, repair, and improvement services for residential customers. and there is no project too big or small for our team. We are dedicated to delivering superior results at affordable prices,
Get in touch
Latest review:
He done loft conversion which he did a great job. Completed it in 6 months which in 2 months less agreement. He kept it well done tidy. He done what we had asked to do and completed on. He had a good customer service easy to contact and sort out any issue. I would recommend him to anyone for his work.

3.9

Top rated Extension Builders

Our Extension Builders in North Finchley, are rated 3.9 out of 5 based on 16 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 North Finchley?

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 North Finchley 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 North Finchley who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in North Finchley?

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

Find extension builders in North Finchley with MyBuilder

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

Step 2: Compare different extension builders in North Finchley

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

Step 3: Hire North Finchley extension builders with confidence

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

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

What to ask a North Finchley extension builder before hiring?

Before hiring an extension builder in North Finchley or extension building company in North Finchley, 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 North Finchley?

An extension builder in North Finchley 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 North Finchley 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 North Finchley?

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 North Finchley 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 North Finchley 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 North Finchley

Can an extension builder in North Finchley help with planning permission?

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

Many North Finchley 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 North Finchley help with materials and finishes?

Yes, most extension builders in North Finchley 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.