Extension Builders in Northolt

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

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

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 Northolt

3047 Results

Sort by:

Mirma Construction Ltd
No reviews yet
Extension Builder in Northolt
Since 2016, with a commitment to quality and customer satisfaction, we have specialized in a wide range of services tailored to meet your project needs. From comprehensive general Building Works to specialized services such as Piling Foundations, Drone Survey and Mapping, and Civil Engineering, we bring expertise and reliability to every endeavour. At Mirma Construction, our dedicated team of professionals combines years of experience with cutting-edge technology to deliver outstanding results. Whether you're envisioning a new construction project, enhancing existing structures with house extensions, or transforming landscapes with our Soft and Hard Landscaping services, we prioritize precision and attention to detail. Our mission is to exceed expectations by providing sustainable, efficient, and aesthetically pleasing solutions that stand the test of time. We take pride in our ability to deliver projects on schedule and within budget, ensuring seamless collaboration and transparent communication throughout. Explore how Mirma Construction can turn your vision into reality. Contact us today to discuss your next project and discover why we're a trusted partner in construction innovation.
Get in touch
Orama Group Ltd
Rating: 5 out of 5
Extension Builder in Northolt
Orama is the family run Construction Company of choice, for large and small scale projects operating throughout London. Offering a bespoke service and setting new standards in the construction industry.
Get in touch
Latest review:
I originally contacted Joe from Orama to fit a new kitchen for me. When he came to give me a quote, I hadn't yet chosen what I wanted. He really took the time to make several recommendations and so I decided to go ahead with him to design my kitchen fully and fit it. The team were so easy to work with and most importantly respectful in my home! Their attention to detail is second to none. He really understood the style I liked in one conversation. The finish is flawless. I highly recommend them!!
W&T Building Maintenance LTD
Rating: 5 out of 5
Extension Builder in Northolt
WT Construction Service LTD. has been in business since 2002 and we`re specialists in design, planning, structural, building service, house extensions, loft conversions, joinery and renovation work covering whole of London.We guaranteed high quality finish on competitive price. We`re signed FMB,TRUSTMARK
Get in touch
Latest review:
William and his company fitted a new kitchen for me and did the painting and wallpapering as well. They did a professional high quality job within a short time. I was absolutely satisfied with their service and their prices. They work fast, clear and precisely. I would highly recommend them to anyone.
RHP homes Ltd
No reviews yet
Extension Builder in Northolt
I have my own building company and we undertake a to z building work. We complete extensions, loft conversations, new builds and any/all sort of building work. We have teams that work efficiently and professionally.
Get in touch
Orbital construction limited
Rating: 1 out of 5
Extension Builder in Northolt
We a family run business and have been in the building business for 38 years . Our ethos is treat every project as it is our own and have pride in completing a scheme that satisfies all involved.
Get in touch
Latest review:
Groundwork & Foundations- 10 Feb 2026
I Have arranged a site visit with ORBITAL CONSTRUCTION LIMITED they didn’t turn up no even answer the phone call .
gillz conatruction
No reviews yet
Extension Builder in Northolt
Al building work undertaken Heating plumbing Electric Loft extension Kitchen extension
Get in touch
Michael O'Carroll
No reviews yet
Extension Builder in Northolt
Bricklayer with over 20 years experience in all aspects of building .
Get in touch
BM Contractors
Rating: 5 out of 5
Extension Builder in Northolt
I am a general builder with 21 years experience working for BM contractors. Of which I am a partner in now.the family business goes back to 40 years. I started out as a plasterer. But also build extensions and renovations.New builds and all other kinds of building work.
Get in touch
Latest review:
Conversions - General- 10 May 2019
Liam was extremely professional, job completed to a five star finish. It was for my elderly mum and dad and he was very conscientious & patient towards them whilst doing the building works. They left NO mess and even went the extra mile on a couple of minor asks during the job. Cant recommend highly enough.
DGH Construction
Rating: 5 out of 5
Extension Builder in Northolt
Greetings, My name is Defrim and with over 3 decades of international and national experience in the field I provide high quality work and solutions at an outstanding rate. Please feel free to contact me for a free estimate.
Get in touch
Latest review:
Carpentry- 5 Nov 2022
The Job was done efficiently and I was extremely pleased with the builders professionalism and his experience. He worked with extreme care and once the job was completed he tidied and left the area clean.. I will definitely recommend him..
Hodder’s construction ltd
Rating: 5 out of 5
Extension Builder in Northolt
Hi my name is Daryl I’m a bricklayer by trade but do a lot of other trades such as fencing, landscaping, driveways, automatic garage doors, and groundwork’s. I’ve been working in the construction industry For over 10 years now me and my team have a high standard of work please give me a call for a free quote.
Get in touch
Latest review:
Fencing- 19 Jan 2025
Excellent job completed in 2 days, would recommend and will be using again.
We Do Foundations and Extensions Ltd
No reviews yet
Extension Builder in Northolt
We are actively involved in the provision of top-quality residential and commercial construction services. We expertly coordinate every aspect of our client’s construction project, from design and planning to custom fabrication and on-site management.
Get in touch
Viorel Duma
No reviews yet
Extension Builder in Northolt
I am skilled and dedicated Builder with years of experience in residential ,commercial and infrastructure construction. I take pride in delivering durable,high quality work and am always ready for new projects.
Get in touch
My Home Services London Ltd
Rating: 5 out of 5
Extension Builder in Northolt
My Home Services London Ltd is a professional construction and home improvement company specialising in bathroom and kitchen renovations, house extensions, loft conversions, and full property refurbishments. We also provide expert gas, electrical, electronics, and smart home (domotics) installation and maintenance services. Our team delivers complete, high-quality solutions designed to transform homes by combining functionality, comfort, style, and modern technology. From small upgrades to large-scale renovation and extension projects, we work with a safe, reliable, and professional approach tailored to each client’s needs and vision.
Get in touch
Latest review:
Handyman- 29 May 2026
Absolutely fantastic service, they did a great job!!! Friendly and professional. I look forward to having them back for more jobs. 100% highly recommend!! Thank you very much!
Krots
Rating: 5 out of 5
Extension Builder in Northolt
Wood carpenter for doors, external rooms, ceilings, stairs, bedrooms, kitchens, railings and gardens
Get in touch
Latest review:
Carpentry- 28 Sep 2025
Great handywork,
CM Building LTD
Rating: 5 out of 5
Extension Builder in Northolt
At CM Loft Conversions, we specialise in luxury loft conversions, home extensions, and full refurbishments for both residential and commercial properties across London. Our dedicated team is renowned for transforming spaces with unparalleled craftsmanship and meticulous attention to detail. Whether it’s a high-end home, a modern office, or a commercial property, we deliver projects that elevate both form and function. By seamlessly blending design innovation with practical solutions, we ensure every project not only enhances the aesthetic appeal of a space but also maximises its value and usability. At CM Loft Conversions, we are passionate about creating bespoke spaces that reflect the unique needs of our clients. From concept to completion, we focus on the fine details and provide a smooth, stress-free experience. Whether you’re looking to transform your home, expand your business premises, or refurbish a commercial unit, our team is committed to delivering results that exceed expectations.
Get in touch
Latest review:
I met Charlie and his team from CM Builders Ltd when they were completing a loft extension and ground floor extension for one of my neighbours. Quotation and budget I was given an estimate subject to drawings as I was on a strict budget that I had to keep to for the build. Charlie was able to help me keep to the budget, both at the final agreed plan and during the build. The project was complex in that whilst it was a loft extension, all of the house was rebuilt. The only thing kept was the external walls and first floor rafters. Whilst the footprint of the first floor was not being changed I wanted to bring it up to current building standards with extra insulation. All of the plumbing and electrics were also replaced including a new boiler. The overall build has come in on budget, save for agreed enhancements that I did not think of at the planning stage and or building regulations such as double ceiling fire plaster boards. There were also items such as the original stairs that I wanted to keep, but Charlie was able to increase the height space in the kitchen making the worktop much more usable for tall people for a larger part of the kitchen. These were suggested to me as potential options as part of the build. Stage payments The stage payments have all been sensible throughout the build and linked to the ongoing work schedule. I have not therefore had any concerns in this regard. Quality of work This was a very complicated build as unlike the ground floor the first and new second floor are “L” shaped. The new 2nd floor included an en-suite and 2 bedrooms. Overall the house has been increased from 2 bedrooms 1 bathroom, to four doubles and 2 bathrooms. The quality of work is excellent and Charlie project manages his team to ensure that they all deliver to a high standard- if it is not done correctlt they do it again, with Charlie spotting any issues. Timeline of build This has generally gone to plan very well. As with any build you have to be realistic as things will happen outside of anyone’s control. When issues have arisen Charlie manages them to a conclusion. Also be realistic if you are having to manage to a tight budget. I had to plan for various stage receipts of cash before I could order the kitchen and bathroom items - make sure you understand how this impacts the build and availability of the work force, recognising that CM Builders have to book kitchen fitters and plumbers. CM Builders are also very helpful in that they have sorted out issues with the brick work of my freestanding garage (nothing to do with the build) and also a neighbour’s wall that could have been dangerous to the public, should it have failed. Conclusion The whole family are very pleased with the outcome and we now have the equivalent of a brand new house that has been built to a very high standard. This has definitely been worth doing both from a valuation perspective and quality of life perspective. I would not hesitate to instruct Charlie and his team again.
Construction group
No reviews yet
Extension Builder in Northolt
My name is Tilak and I have been working in builder merchants for 5 years now, with knowledge across the construction industry. Building mostly knowledge in several departments and helping customers with any issues regarding their personal home. Understanding the needs of the customers and advising on solutions is what I have always done. I have built rapports with many builders from different ethnicities as well as different specialties. From landscaping to extensions I have them all covered. Whatever your needs, I can provide you with the best team tailored specifically to your projects. It doesn't just stop there, we also have specialists in plumbing and electrical work as well. Covering a broad horizon of work to ensure that you our customers are not limited in the construction work they require. Our job is to make your dream homes become reality. As a benefit, since I have worked with many builder merchants and have a built my own contacts, I can provide the best prices as well as quick delivery for materials. Who doesn't like having construction work to be finished early, Right? As a company, we take pride in ensuring that we deliver the best quality work as well as service to our customers. You, as our customers are really important to us and we look to continue to build and improve on our services, not just the building aspect but more importantly the customer service you receive, we will take our time to hear how your experience is as well as any criticism that you may have. We are looking to be the best and the ones that everyone thinks of when looking to improve their homes. We hope to have you apart of the journey.
Get in touch

3.9

Top rated Extension Builders

Our Extension Builders in Northolt, 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 Northolt?

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

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

What are the hourly rates of extension builders in Northolt?

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

Find extension builders in Northolt with MyBuilder

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

Step 2: Compare different extension builders in Northolt

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

Step 3: Hire Northolt extension builders with confidence

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

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

What to ask a Northolt extension builder before hiring?

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

An extension builder in Northolt 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 Northolt 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 Northolt?

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 Northolt 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 Northolt 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 Northolt

Can an extension builder in Northolt help with planning permission?

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

Many Northolt 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 Northolt help with materials and finishes?

Yes, most extension builders in Northolt 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.