Extension builders in Willesden

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (19 reviews)

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Some of our top rated extension builders in Willesden

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HaliBuild
Rating: 4.7 out of 5
Extension Builder in Willesden
We have been working as subcontractors for over 15 years now and decided it was time to branch out on our own, hence you find us on MyBuilder, We are eager to get some work done and some positive feedback to go along.
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Latest review:
Extensions- 26 May 2021
Ali Revani at Halibuild provided us with a quote which we accepted. 3 days before the job start date Ali Rezvani called and explained that they had under priced and they would want another £3000 to start the contract. Ali Rezvani then started the job but again admitted that they under priced the job and walked off the site several months into the project after the following major quality issues which needed to be addressed: Pouring the foundations in the wrong place, building the extension in the wrong place, building the roof incorrectly, installed roof steels in the incorrect position, built the extension rear wall too high, the plumbing to the boiler needed to be redone, all the plastering has had to be redone, skirtings needed to be redone, staircase had to be rebuilt. The list goes on and is 40+ points long. This has been a terrible experience and we face serious losses and a stressful dispute."
Sandhya Mahadevan
No reviews yet
Extension Builder in Willesden
I am a Structural Engineer with experience delivering structural design for residential and commercial projects. I specialise in alterations to existing buildings, including wall removals, loft conversions, extensions, and steel and timber design. I provide clear calculations, drawings, and practical solutions that meet Building Regulations and site constraints.
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Build Geroge
No reviews yet
Extension Builder in Willesden
I am an all round tradesman, electrician and plumber and handyman. I have over 30 years experience and my team are very well experienced too. We are happy to take on any job.
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Waven.costruction and development ltd
Rating: 5 out of 5
Extension Builder in Willesden
20 years experience in all aspects of plastering. Complete refurbishments, extensions and loft conversions.
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Latest review:
Plastering- 21 Jul 2016
Very impressed with John’s work and would highly recommend him. John’s work was very good quality, he recommended practical solutions to problems and had a very positive can do attitude fixing up areas outside of the job I hired him for free of charge. Very happy
DGH Construction
Rating: 5 out of 5
Extension Builder in Willesden
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.
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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..
HARMANRAJ CONSTRUCTION
Rating: 4.9 out of 5
Extension Builder in Willesden
Business Name: Harman Raj Constructions Ltd About Us: At Harman Raj Constructions Ltd, we bring 7 years of experience in roofing, building extensions, plastering, driveways, and fencing. We take pride in delivering high-quality craftsmanship for every project, whether big or small. Why Choose Us? • Expertise You Can Trust: Our 7 years in the construction industry mean we have the skills to handle a wide range of projects. • Customer-Focused: Your satisfaction drives everything we do. We work closely with you to ensure the final result matches your vision. • Specialized Skills: From roofing and extensions to plastering and fencing, our expertise ensures excellent results. • Quality & Reliability: We deliver on time, within budget, and without compromising on quality. Services We Offer: • Roofing installation, repairs, and maintenance • Building extensions and renovations • Expert plastering • Driveway construction • Fencing installation and repair Contact us today for a free quote and let us bring your construction ideas to life!
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Latest review:
Plastering- 11 Apr 2026
Absolutely thrilled with the work carried out by Harman. The skimming has been completed to an exceptionally high standard - the finish is incredibly smooth and completely seamless. Harman and his colleague were professional throughout: tidy, courteous, and very polite. They took great care to properly protect and cover the surrounding areas, leaving everything clean and intact once the job was done. What really stood out is their attention to detail and commitment to getting everything perfect - even offering to return for any final finishing touches if needed. I honestly couldn’t recommend them highly enough. Brilliant job from start to finish.
eight sixty two
No reviews yet
Extension Builder in Willesden
Hello, my name is Martin, and I am a skilled and experienced painter and decorator with a strong passion for creating beautiful, high-quality finishes. With 25 years in the industry, I specialize in both residential and commercial projects, delivering results that combine precision, creativity, and attention to detail. Whether it’s transforming interiors with vibrant color schemes or enhancing exteriors with durable finishes, I take pride in exceeding client expectations and bringing their visions to life.
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CPR (Complete Property Renovations)
No reviews yet
Extension Builder in Willesden
CPR (Complete Property Renovations) is a professional property renovation company specializing in complete renovation solutions for residential and commercial properties. We deliver high-quality workmanship across every stage of the renovation process, from initial demolition and structural alterations to the final finishing touches. Our services include kitchen and bathroom renovations, flooring installation, painting and decorating, electrical and plumbing works, interior refurbishment, and complete property fit-outs. Whether you’re renovating a house, apartment, office, or retail space, we are committed to delivering reliable, efficient, and high-quality results tailored to your needs.
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PMBuilding Ltd
Rating: 5 out of 5
Extension Builder in Willesden
We are a family run business of over 15 years. We believe in no “I” in the team and you will certainly spot it easily, if you ever have an opportunity to work with us. We are a building company that does it all differently. Meet us and find out for yourself!
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Latest review:
Extensions- 29 Jan 2015
PM Building epitomise what a modern day, professional building firm should aspire to be. Transparent pricing, a friendly team working 6, sometimes 7 days a week to get the job done quickly, an eye for detail and very high standard of final finish. All comms and the overall work is run through Bart, who answers to phone, text or email quickly and frequently outside normal working hours. This is ideal if you work during the day and cannot be around to oversee things directly. We also got PM Building to make us a bespoke kitchen, again very high quality and millimetre perfect. If I had to find some negatives, they are not the cheapest company you could find, but there again you get what you pay for; also, we developed a few issues with some retaining walls in the garden, however, they returned when I contacted them long after the work had finished and fixed them! All in all, an excellent, honest and professional company to deal with. I would, and have, recommended them to friends...nuff said.
Master Builders Developments Ltd
Rating: 4.6 out of 5
Extension Builder in Willesden
Newly Joined My Builder, We are a established Building firm specialising in Extensions, Loft Conversions and Refurbishments, we undertake commercial projects along with substantial size constructions. Our team over all elements of construction.
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Latest review:
Roofing (Pitched)- 26 Sep 2024
Keep this company as first choice for ur building work.
Orama Group Ltd
Rating: 5 out of 5
Extension Builder in Willesden
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.
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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!!
DC Brickwork
Rating: 5 out of 5
Extension Builder in Willesden
Dear Customers I am honest trustworthy reliable and hardworking and I have over 25 years experience in the industry.
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Latest review:
Bricklaying- 29 Jun 2017
I would recommend Damian. Did a good job, good communication and was on site when he said he would be. Polite and friendly. I would be happy to use again.
In Out Constuct
Rating: 3 out of 5
Extension Builder in Willesden
My company In Out Construct we are a professional building company which you the client can fully trust. We specialise in most building aspects such as : Refurbishments, Wall openings, structural steel installations, Loft conversions, removal of chimneys, kitchens, bathrooms installation, Kitchen extensions, painting decorating. We always aim to fulfill our customer needs, comply with all British Standard regulations and make sure all our work is of best standard, and complited on time.
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Latest review:
Kitchen Fitting- 16 Jul 2018
Very good work and completed on time. Highly recommended.
Arisa renovation LTD
Rating: 5 out of 5
Extension Builder in Willesden
Arisa Renovation LTD is a reliable and experienced building company based in London, offering a full range of high-quality renovation and construction services. We specialise in complete property refurbishments, including house renovations, extensions, and loft conversions. Our services cover all aspects of building work such as painting & decorating, bathroom and kitchen installations, carpentry, flooring, tiling, plastering, and general maintenance. We have extensive experience in structural work, including roofing, framing, and full property transformations from start to finish. Whether it’s modernising an interior space, installing a new bathroom, building bespoke stairs, or completing a full renovation project, we deliver excellent craftsmanship with great attention to detail. We pride ourselves on being professional, punctual, and tidy on every job. All work is completed to a high standard, on time, and within budget. Customer satisfaction is our top priority, and we maintain clear communication throughout every stage of the project. We also offer a workmanship guarantee to give our clients peace of mind. If you are looking for a trustworthy and skilled builder in London, Arisa Renovation LTD is here to help bring your project to lif
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Latest review:
We are extremely happy with the bathroom renovation completed by Arista Renovation LTD. The workmanship is top quality, especially the tiling and finishing details. Communication was clear throughout and the project was delivered exactly as agreed. Would definitely use them again.
Emerald london building solutions fixed
Rating: 4 out of 5
Extension Builder in Willesden
Refurbishment and building contractors/carpentry Contractors we are master builders and a reputation of being excellent at a reasonable Price all work is backed by guarantee on all works
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Latest review:
Restoration & Refurbishment- 15 Jun 2020
Left the job unfinished after many days of chasing to complete. Quality dependent on individual tradesman. Initially good quality but other workmen poor. In the end I had to throw them offsite.
Rutba design & build ltd
Rating: 5 out of 5
Extension Builder in Willesden
I provide complete building services like loft conversion, side & rear extensions, kitchen, bathroom, plumbing, underfloor heating, electric & driveways, painting & decorating etc.
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Latest review:
Absolutely great quality of work and outstanding service. Jagjeet and his team have done a great job without any delays. Honest and hard working. Very happy to recommend Rutba

4.4

Top rated Extension Builders

Our Extension Builders in Willesden, are rated 4.4 out of 5 based on 19 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.