Extension Builders in Willesden

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (20 reviews)

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Some of our top rated extension builders in Willesden

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W4 Builders
Rating: 5 out of 5
Extension Builder in Willesden
We do all kind of building services in west London. We do painting, decorating as well as plumbing and electrics. We do bathrooms and house extensions and full property refurbishments.
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Latest review:
Robert Biegala has done laminate flooring, decorating and other tasks in my office in Farringdon. It was pleasure to work with Robert as he is a reliable, responsible and trustworthy person. His communication was consistent and reassuring. Robert is proactive and finds solution to any problems which arise during works. I would highly recommend his services.
GMC LONDON RENOVATIONS LTD
Rating: 5 out of 5
Extension Builder in Willesden
GMC LONDON RENOVATIONS its specialist in New Builds , Home Extensions , Loft Conversion , Home Renovations and Refurbishment we are committed to providing the best quality workmanship and service. We have experience over 10 yrs in Construction industry Residential and Commercial, we completed successfully many projects during the years where quality was our No1 priority . We holding Public Liability Insurance for customer Peace of Mind and Safety certificates for Gas and Electrical work installation. GMC LONDON RENOVATIONS will deliver from start to finish your project without hassle or delays . We are professionals and enthusiastic young team members.
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Latest review:
Bathroom Fitting- 24 Oct 2025
We had 2 bathrooms refurbished at the same time by Romulus and his team over a 4 week period. Both bathrooms were completed on time and on budget. We were looking for 2 functional bathrooms, but ended up with 2 very high spec bathrooms within our original budget, and couldn't be happier with the high level of service and professionalism by all his team. We will now move forward and have his team refurbish our kitchen.
Teimourazi Bachsoliani
Rating: 5 out of 5
Extension Builder in Willesden
Hi, my name is Temo. Our team has combined experience of more than 20 years and we have an excellent reputation, for high quality work, tidy finish and friendly service. My team does all types of jobs including extension, loft conversion, full refurbishment. We always deliver best quality job for a reasonable price.
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Latest review:
Conversions - General- 23 Jul 2025
I recently had the pleasure of working with Teimo and his team on a full renovation of a probate house, and I couldn't be happier with the results. The entire house needed a complete overhaul, including two new bathrooms, a kitchen extension, new doors, skirting, walls, plumbing, electrics, as well as front garden paving, a brick wall, and back garden fencing. The quality of the work is outstanding. Teimo and his team take immense pride in everything they do, and it really shows in the final product. They are not only highly skilled but also incredibly polite and tidy, ensuring the worksite remained clean throughout. They worked hard, from 8:30 AM to 5:30 PM every day, and completed the project on time without any issues. What truly stands out about Teimo is his honesty and clear communication. He’s upfront about everything, and you can trust that the price you’re quoted is the price you’ll pay—there are no surprise cost increases along the way I highly recommend Teimo and his team
Multiservice Solutions LTD
Rating: 4.9 out of 5
Extension Builder in Willesden
At Multiservice Solutions LTD, we pride ourselves on being a team of multi-skilled, experienced, and reliable handymen and service providers. We are dedicated to delivering top-notch services across London, ensuring your needs are met with efficiency and professionalism. Whether you require sash window installation and refurbishment, end-of-tenancy cleaning, or comprehensive property management, we've got you covered.
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Latest review:
Windows & Doors (Wooden)- 30 Mar 2026
I hired Endri for 1 double glazed unit replacement, repair and repaint my wooden windows. He was professional and well mannered from the start. He did a fantastic job on the windows, now they look as good as new from the inside. I'd be happy to hire him again in the future.
Llann Homes
Rating: 5 out of 5
Extension Builder in Willesden
For quality finish Just Call Us. We are your local builder and your satisfaction is our priority
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Latest review:
Excellent service
JKBC
Rating: 5 out of 5
Extension Builder in Willesden
By having 20 years of experience in the business, no job is too challenging. My team specialises in both small scale repairs and decorating, as well as major projects such as refurbishments, extensions, and home renovations.
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Latest review:
Jerzy carried out several jobs for us. He has completely refitted our bathroom, he's rebuild a wall, laid front of house path, restored old front door, installed solid wall internal insulation, rebuild window frames, plastered a room and few other bits and pieces. He is extremely reliable and trustworthy. He's always been on time, works really hard and has always been honest about things and up front with any issues. Always consulted us for possible solutions. His work is to the highest standard and if I want a job done well, I always go to Jerzy.
mares pro build ltd
Rating: 5 out of 5
Extension Builder in Willesden
Reliable with good quality finish, very competitive on price, clean and professional workmen fully qualified and insured
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Latest review:
Plastering- 5 Aug 2019
The job was more than a standard plaster job it was a complete refurbishment of the dining room with the new flooring extending into the hallway. Ionut did an amazing job his attention to detail is first rate I have used quite a few builders over the years and I can honestly say Ionut impressed me the most. He is hardworking, meticulous to detail, tidy and goes above and beyond the job that has been agreed. An example of this was him deciding to hide all loose wiring while he was doing the skirting which has made things much more tidy and also doing new flooring and skirting under the stairs without me asking. He wrapped everything in plastic during the job (radiators, doors, light sockets etc) no plasterer I have used before took that much care in protecting things during plastering which as we know is a very messy job. We will be recommending to all our friends and in the future he will be the first contact if we need any more building work. 100 percent recommend his services and thank you Ionut for the job you have done for us
Rml plastering
Rating: 5 out of 5
Extension Builder in Willesden
-Loft conversion -Extension - Plastering - Painting - Carpenter
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Latest review:
Plastering- 20 Sep 2025
Great work, professional team and would definitely recommend
Design Build Deliver London LTD
Rating: 5 out of 5
Extension Builder in Willesden
Design Build Deliver London Ltd At Design Build Deliver London Ltd, we provide high-quality building and renovation services across London, delivering exceptional workmanship from concept to completion. With a strong focus on reliability, professionalism, and attention to detail, we work closely with homeowners and property developers to transform properties into modern, functional, and beautifully finished spaces. Whether it’s a full property renovation, a bespoke bathroom installation, or a complete extension project, our experienced team manages every stage with precision and care. We pride ourselves on delivering projects on time, within budget, and to the highest standards. Our Services * Full House Renovations * Bathroom Renovations & Refurbishments * House Extensions * Garden Design & Landscaping * Roofing Services * Plumbing Services * Electrical Installation & Repairs * Kitchen Renovations * Property Refurbishments * Interior & Exterior Improvements * General Building Works * Design, Build & Project Management Services Design Build Deliver London Ltd — transforming properties with quality craftsmanship and dependable service.
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Latest review:
Bathroom Fitting- 7 Jun 2026
Excellent service and outstanding workmanship! I recently had my bathroom renovated by this company and I couldn't be happier with the results. From start to finish, they were absolutely professional in every way. The quality of their work is truly perfect - they paid such close attention to detail and did an amazing job with everything. What's more, the price they quoted me was very reasonable and they stuck to it without any hidden costs or surprises. The whole process was smooth, efficient and stress-free. I would highly recommend them to anyone looking for building services - they really are top class and provide excellent value for money. Thank you for such a fantastic job! To Abdullah and his team.
DK Home Refurbishment
Rating: 5 out of 5
Extension Builder in Willesden
Turn your property into the home you’ve always wanted — with DK Home Refurbishment Ltd. With over 25 years of experience, we specialise in loft conversions, house extensions, basements, full refurbishments, and property maintenance across London. We provide a complete end-to-end service, including: ✔ Architectural design & planning support ✔ Council applications & approvals ✔ Structural engineering ✔ Building control compliance ✔ High-quality finishes and attention to detail We take pride in reliable workmanship, clear communication, and high standards on every project — from concept to completion. 📩 Message us today to discuss your project and get a free quote. #LoftConversion #HouseExtension #FullRefurbishment #PropertyMaintenance #LondonRefurbishment
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Latest review:
Joinery & Cabinet Making- 13 Apr 2015
Daniel was excellent, incredibly friendly and happy to talk through various solutions for our problem and also helped with an unrelated issue we had. Can't recommend highly enough, thanks Daniel
Rayway limited
Rating: 5 out of 5
Extension Builder in Willesden
Over 15 years of experience in building and construction industry
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Latest review:
Restoration & Refurbishment- 18 Feb 2021
Ray was an absolute professional. He fitted a new downstairs toilet which required a new soil pipe and associated groundwork as well as new stud walling to partition the space. He did most of the work himself, but brought in others for the pieces where he wanted an expert. He was flexible to small changes and was happy to take on additional work when unforeseen issues were discovered. The areas he had worked in were quickly cleaned before he left each day. Overall the work was completed to a good quality and at a reasonable price.
KG DESIGN & BUILD LTD
Rating: 5 out of 5
Extension Builder in Willesden
Hi I`m Kleida .I worked in Building industry for a while now and I have built a quite a knowledge on extensions loft conversion and refurbishment . I recently decided to start working for myself .I also have a very good working team with various knowledge on various stages of projects .
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Latest review:
Conversions - General- 8 Oct 2025
Gaz and his team were professional and hard working, and clear about what would happen when. The job is now finished to a good standard, and on time.
SAABCO VENTURES Ltd
Rating: 4.7 out of 5
Extension Builder in Willesden
Complete Home Improvement Service At SAABCO Design & Build we guarantee all of our work and can undertake all aspects of your home improvement project; from planning your home’s interior to creating stunning bathrooms and kitchens. A team ready to realise your dreams and design the home you’ve always wanted.
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Latest review:
Carpentry- 22 Aug 2018
In the end, Saabco did a much larger job, decorating the entire flat. The quality was excellent and I couldn't fault them for professionalism. Definitely recommend.
Tomyc Constructions Limited
Rating: 5 out of 5
Extension Builder in Willesden
Tomyc Constructions Limited is a London-based renovation and building company. We specialise in full property refurbishments, bathrooms, kitchens, painting, flooring, and general construction. Our services also include microcement finishes, decorative paints, and feature wall creations. Fully insured, reliable, and committed to delivering high-quality results on time and to a professional standard. All our work comes with a one-year guarantee.
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Latest review:
Really happy with our new bathroom. The team from Tomyc Constructions were professional, tidy, and finished everything to a high standard. Work was done on time and exactly as promised. Highly recommend.
crownbuilders
Rating: 5 out of 5
Extension Builder in Willesden
we are a genral building company we carry out all the trades within the construction of works single double extensions loft conversions Underfloor heating Megaflow systems bathrooms kitchens all work can be viewed any time all certificates on completion of works
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Latest review:
Windows & Doors (uPVC & Metal)- 12 May 2016
Peter is very friendly and is a great communicator. He gives you a detailed breakdown of the job and will advise if he thinks there is a better and cheaper way to do something.
We will do
Rating: 5 out of 5
Extension Builder in Willesden
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!

4.4

Top rated Extension Builders

Our Extension Builders in Willesden, are rated 4.4 out of 5 based on 20 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Willesden?

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

Find extension builders in Willesden with MyBuilder

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

Step 2: Compare different extension builders in Willesden

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

Step 3: Hire Willesden extension builders with confidence

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

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

What to ask a Willesden extension builder before hiring?

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

An extension builder in Willesden 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 Willesden 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 Willesden?

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 Willesden 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 Willesden 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 Willesden

Can an extension builder in Willesden help with planning permission?

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

Many Willesden 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 Willesden help with materials and finishes?

Yes, most extension builders in Willesden 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.