Extension Builders in Hanwell

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (19 reviews)

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Some of our top rated extension builders in Hanwell

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AEE Construction Ltd
Rating: 5 out of 5
Extension Builder in Hanwell
General renovations, electric, plumbing, decoration, painting, kitchen fittings, tiling, flooring, bathrooms, extensions, loft conversions and property maintenance
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Latest review:
Handyman- 27 Jul 2023
Very professional and polite man. Job done neat and professionally. Would highly recommend.
FBF Construction Ltd
Rating: 5 out of 5
Extension Builder in Hanwell
We take all types of jobs from demolish a house and rebuild at the highest standards.
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Latest review:
Florin extended and completely refurbished our 4-bedroom semi-detached house. This included extensive steelwork, underfloor heating, complete re-plumbing and rewiring, excavation, and an entirely new slate roof as well as varying extensions up to three floors high. I cannot say enough good things about his workmanship, professionalism and reliability. His workmanship makes a perfectionist like myself happy. He is also completely professional: even with our difficult neighbours he was always courteous and understanding, and even helped them sort out issues at a moment’s notice that had nothing to do with his building work on our property. And he is also thoroughly reliable. I cannot think of any instance where he committed to something and did not deliver — he even managed to finish all the work on our house ahead of schedule and on budget. We have been so happy with his work that we contracted him to build us a summer house as well, from scratch, and to complete revamping our front garden including elements of hard landscaping. Again he delivered flawlessly and we are very happy with the result. We also continually receive positive comments from people passing by and just seeing the front garden. We have used several other builders in the past on other properties, including far more expensive ones, and none compare to his level of competence, attention to detail in his workmanship, his complete professionalism and thorough reliability. Now that we have found Florin, we will never look for another builder again. I just hope once others experience what he delivers for themselves he will still have some availability for us in the future!
RODOF ltd
Rating: 4.7 out of 5
Extension Builder in Hanwell
Construction services offered with schedule of the project with focus on quality from our long experience. Making your house extension where relaxing becomes enjoyable again in your larger space. Loft conversion where is just simply better overall with it than without it. Take the kitchen to the next level of meal making and sharing those savoury moments together with friends and family. Transforming the house to the next level of its potential through a full refurbishment project.
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Latest review:
Extensions- 6 May 2019
Christi has completed my loft refurbishment work already and was punctual, professional and flexible and worked well around my family . I would recommend him and use the company in future, great guys.
PRT London ltd
Rating: 5 out of 5
Extension Builder in Hanwell
Hard working, easy going. I like to give the customer respect and honesty as I would like the same in return. I am a very good timekeeper and i like to give my client 100% committment to any contract,let alone what the value is.
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Latest review:
Carpentry- 19 Apr 2012
It was an absolute pleasure having Danny round to fit our new Front Door. He arrived promptly, worked extremely hard and completely the job to a very high standard. He always works with a smile on his face and is an extremely amiable person. You will not be disappointed if you hire him for the job and I'll certainly be using him again in the future.
Livinroom Developers Ltd
Rating: 5 out of 5
Extension Builder in Hanwell
Our expertise lies in project management of loft conversion and kitchen extension which is carefully coordinated to ensure a seamless and integrated package service from start to finish. Our role is to be the single point of responsibility taking the burden off the client. This includes managing what are often complex building processes from inception through to completion and hand over.
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Latest review:
I recently completed the building of an orangery extension (with skylight) to my semi-detached townhouse in NW London. The extension was to be used as a new kitchen while the existing kitchen converted to a living room. I awarded the contract of building the extension to Anthony and I was pleasantly impressed with the quality of work delivered. Anthony Project Managed the entire process from beginning to end and ensured that all my expectations were surpassed. His hands-on attitude to every detail of the work was quite reassuring. I am glad to say that Anthony and his team are very good professionals and they delivered the project on time and within budget, even going over and beyond the original scope of works in order to ensure that all my latter requests were addressed appropriately.
Organisedproperty.ltd
No reviews yet
Extension Builder in Hanwell
We have extensive experience in construction for over 15 years, many satisfied customers with our work, the last projects we did were the Osterley and Isleworth areas. We provide a free assessment of your work, our employees are certified according to British standards, we guarantee quality work for one year. Our company motto is, if you pay, we work.
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Choice
Rating: 5 out of 5
Extension Builder in Hanwell
CHOICE is a construction company specialising in house refurbishments across London. We cover all aspects of the construction service from demolition services, plastering,carpentry, plumbing and electrics, flooring to decorating. With many years of experience in construction industry, we provide attention to detail in every aspect of our work. Our pledge is to establish an interactive relationship with our customers and providing a superior level of service.
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Latest review:
Conversions - General- 26 Apr 2026
precise, and did the job, rapidly with a team of workers - left a bit of a mess but fine overall for their services
CB brickwork
Rating: 5 out of 5
Extension Builder in Hanwell
Welcome to CB Brickwork. I’m Ciaran a bricklayer from Scotland and I moved to London 2 years ago. I’ve worked for large building companies for many years and now looking to take on projects with My Builder. I have an eye for detail and take pride in my work. Not to mention I am polite and courteous! I am happy to meet up and look at your project. I can also help you plan and create ideas for your dream design. Looking forward to chatting with you! Ciaran
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Latest review:
Bricklaying- 17 Mar 2022
Ciaran did a great job with building our wall. Great communication throughout and always kept us in the loop. Good time keeping and kept the work area very clean and tidy. Would highly recommend.
Razvan Consttruction Ltd
Rating: 5 out of 5
Extension Builder in Hanwell
Razvan Consttruction Ltd is a company with a solid team of builders with experience of 20 years!
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Latest review:
We had a lot of work done including a brand new roof, whole rear and side extensions. New driveway. Landscaping. Complete fit out works inside. I wouldn’t hesitate to recommend Razvan- he is a complete professional and a really nice guy. Honest and hardworking and takes pride in his work. Out of all of the builders I have used Razvan is the only one I would use again.
Grzegorz Kasprzycki
Rating: 5 out of 5
Extension Builder in Hanwell
I am more than happy to help you with answering all your questions. Please call me if you are interested to hire me. Please don't shortlist me if you not intend to call me, or you don't accept my price estimate. I have 20 years of plumbing and building sites experience. This includes also commercial sites. 10 years of works carried out in London as being self employed. I am happy to help in any works related to gas works, plumbing, or renovations. I do travel in all South of London to cover the area up to 20 miles away from home. I do not hesitate to undertake all range of plumbing problems to solve. I am not only a heating engineer, but have good experience in Air Conditioning and Ventilation, even some in Chilling systems. Very friendly to any handyman work. I am happy to serve with my knowledge and skills. Thank you for reading this. Greg #heating #G3 #leakdetection #gasSafe #bathroomfitting #radsinstallation #boilerbreakdown #emergencyplumbing #findaleak #pipesfittings #waterregulations #gsr
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Latest review:
Central Heating- 29 May 2026
Gregory was simply fantastic, both as a professional and as a person. I’m so glad to have had his help and would not hesitate to hire him again.
KEVIN CONSTRUCTION SOLUTIONS LIMITED
Rating: 5 out of 5
Extension Builder in Hanwell
Kevin Construction is a London-based, well-organised construction company specialising in large-scale developments alongside leading UK firms. We offer a full suite of services—from extensions and conversions to structural alterations and landscaping. With a dedicated team, digital management tools, and a focus on quality, we guide every project from planning to successful completion.
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Latest review:
Fencing- 13 May 2026
Kevin turned up on time and did a solid job on my fence. Would use again
KG DESIGN & BUILD LTD
Rating: 5 out of 5
Extension Builder in Hanwell
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.
LMVContruction LTD
Rating: 5 out of 5
Extension Builder in Hanwell
With 28 years experience we are an friendly and local building company who can help with all your home improvements, whether it be a new bathroom, kitchen, plumbing job, painting and decorating or a complete refurbishment We provide a free no obligation quote We understand the need to provide top quality workmanship and great customer service, at a reasonable cost. We guarantee all our work and are covered by Public Liability Insurance.
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Latest review:
Conversions - General- 28 Jan 2025
We were absolutely delighted with Lino and his services. He was incredibly patient , as our flat purchase was delayed. We required a total gutting off our flat, with new kitchen and bathroom, new flooring, painting, and all the rest. He had great communication throughout. He showed up on time with his team each day , and was so professional throughout. We went to Lino for advice throughout the process. He never said any of our plans were not possible- he always either said yes, or provided another option. This was such a great help. I would recommend Lino to anyone. We are absolutely delighted with our flat.
Bujar Vata
Rating: 5 out of 5
Extension Builder in Hanwell
I am in the building business for 15 years I have worked all around London specially in the City I have registered myself on Mybuilders.com so I can get job around my area.
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Latest review:
Tiling- 7 Jun 2026
Amazing job and a brilliant team of tradespersons. An excellent job of the herringbone tile flooring with underfloor electric heating for the whole of my downstairs. The wall panels also complemented the flooring and were installed perfectly. Well done to Bujar and his team!
A&M ALL BUILDING SERVICES LTD
Rating: 5 out of 5
Extension Builder in Hanwell
A&M All Building Services Ltd is a London-based company specialising in bathroom renovations, plumbing and property refurbishments. We work with homeowners, landlords and property managers, providing reliable workmanship from small plumbing repairs through to complete bathroom and property renovations. Our main services include full bathroom refurbishments, bathroom installations, plumbing repairs and installations, leak repairs, pipework, showers, baths, toilets, basins, radiators, tiling and associated finishing works. We also undertake property refurbishments, including kitchens, painting and decorating, plastering, flooring and general building works. We pride ourselves on quality workmanship, reliability, clear communication and keeping our customers informed throughout the job. Whether you need a plumbing repair, a new bathroom or a complete property refurbishment, A&M All Building Services Ltd can manage the work from start to finish.
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Latest review:
I had a plumbing emergency when my boiler stopped working, so I contacted AM All Building Services. They responded incredibly quickly and were at my property within just 30 minutes. A plumber had been there before them and told me the boiler couldn’t be repaired and that I would need to wait for a replacement. The team from AM All Building Services came out, diagnosed the problem, and managed to get everything working without any issues. The following day, they came back and replaced the boiler as arranged. Their prices were very competitive, and the whole team was professional, friendly, and reliable throughout the process. I’m very happy with the service and would definitely recommend AM All Building Services to anyone looking for a reliable plumbing and heating team. Excellent service from start to finish!
house convert ltd
Rating: 4.6 out of 5
Extension Builder in Hanwell
We have the manpower and ability to undertake jobs small or large. With a combined 30 years experience, we are a company that distinguishes itself with its close approach to the clients and their needs. When it comes to extensions and loft conversions, we bring a unique craftsmanship and use only high-quality materials to give you the best results. From simple changes to major renovations, we have your needs covered.
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Latest review:
Extensions- 25 Sep 2019
Daniel and team did a fantastic job extending our kitchen in West London. Work including all the structural elements, installation of glazing and doors, wood floor, plastering, electrics and kitchen units. Daniel is reliable and happy to help, would definitely recommend him.

3.9

Top rated Extension Builders

Our Extension Builders in Hanwell, are rated 3.9 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 Hanwell?

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

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

What are the hourly rates of extension builders in Hanwell?

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

Find extension builders in Hanwell with MyBuilder

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

Step 2: Compare different extension builders in Hanwell

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

Step 3: Hire Hanwell extension builders with confidence

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

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

What to ask a Hanwell extension builder before hiring?

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

An extension builder in Hanwell 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 Hanwell 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 Hanwell?

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 Hanwell 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 Hanwell 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 Hanwell

Can an extension builder in Hanwell help with planning permission?

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

Many Hanwell 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 Hanwell help with materials and finishes?

Yes, most extension builders in Hanwell 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.