Extension builders in West Ham

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (21 reviews)

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Some of our top rated extension builders in West Ham

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Joy Design & Build LTD
Rating: 5 out of 5
Extension Builder in West Ham
Joy Design & Build – Where every project is a promise of exceptional quality, unwavering integrity, and cutting-edge innovation. We specialize in transforming your vision into vibrant, functional spaces that truly reflect your needs and style. Whether you're dreaming of a bespoke home that captures your unique personality, a commercial space designed to inspire productivity and creativity, or a thoughtful renovation that breathes new life into your property, we are here to turn those dreams into reality. At Joy Design & Build, we take pride in our meticulous attention to detail, our commitment to sustainable practices, and our collaborative approach with every client. From initial concept to final construction, we ensure that each project not only meets but exceeds your expectations. Your vision deserves more than just a construction project—it deserves an experience that’s seamless, stress-free, and tailored to your goals. Let’s build something extraordinary together.
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Latest review:
The works was clean , neat and well organised
SEASOUTH BUILDS LIMITED
Rating: 5 out of 5
Extension Builder in West Ham
At Seasouth Builds, we bring over 5 years of hands-on experience in the building and construction industry. Known for our loyalty, reliability, and attention to detail, we take pride in delivering high-quality workmanship on every project
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Latest review:
Tiling- 24 Sep 2025
I hired seasouth builds because not only did he give a really reasonable quote, but he also had knowledge of tiling over retrofit underfloor heating - which other tilers seemed to be really hesitant to work with. The job was done to an excellent standard - he’s a real perfectionist. It did take a bit longer than expected, due to some floor level issues which he didn’t account for when he quoted. I was really worried about the price increasing out of my budget when we started running over time, but I was so grateful to find that he was a really honest guy who stuck to the agreed quote and didn’t try to make it my problem one little bit. He was polite and friendly throughout the whole job, turned up whenever he said he would, and kept in constant contact. Really honest (I happily left him unattended in my property). Customer service was excellent, nothing was too much trouble. 10/10 would recommend.
Poynts Works Ltd
Rating: 5 out of 5
Extension Builder in West Ham
I'm an ARB Registered Architect with 18 years' experience designing residential extensions, renovations and conversions across London. I work directly with homeowners from the earliest ideas through planning permission, Building Regulations and, where required, construction on site. Every project begins by understanding how you want to live. Using sketches, 3D models and visualisations, we can explore different options together before you commit to building work, giving you confidence that the design is right for your home and your budget. Once the design is agreed, I prepare the detailed technical information needed for construction and remain closely involved throughout the build, helping resolve questions on site and ensuring the original design intent is delivered. If you're considering extending or renovating your home, I'd be happy to arrange a free initial conversation to discuss your ideas, the likely planning implications and the next steps.
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Latest review:
Architecture- 28 Aug 2018
Stephanie is very professional and her knowledge is exceptional. As her advise was good and timely, i was able to move on with my project. Hard to find an honest person like her and I highly recommend her.
Csj building construction ltd
Rating: 5 out of 5
Extension Builder in West Ham
Hi everyone, my name is Festim and I’m happy to help you with my many years of experience in different jobs which house needs. I work for 15 years in Italy and I have been working since 2015 in London. I can do to many different jobs ,brick work, tiles,bathrooms,kitchen,mosaics, Carpenter first and second fixed,doors, skirting, wood flooring. Joinery, wardrobes, bookshelves, kitchen fittings, and more. Free estimates.Thanks
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Latest review:
Tiling- 10 Sep 2025
Excellent craftsmanship and nice guy, jack of all trades. He did all my plumbing tiling and kitchen fitting.. he renovate my kitchen including cabinets, worktop sink tiles and also replace my bath vanity sink, toilet and install new floor and wall tiles. New cupboards, shower screen and many more for very good price.
Jagdeep Singh
Rating: 5 out of 5
Extension Builder in West Ham
Hi,contact us for any type of building work
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Latest review:
Extensions- 8 Dec 2023
I recently had the pleasure of accepting Jagdeep on a substantial renovation project. Initially, I was a bit apprehensive as there were no existing reviews to gauge his work. However, after seeing some of his previous projects, I decided to take a leap of faith - and it turned out to be the best decision I've ever made. Jagdeep's approach to our project, which started merely as a rear extension and shower room, was nothing short of exceptional. His remarkable craftsmanship and attention to detail soon convinced me and my wife to extend the scope to a full renovation. Throughout the process, Jagdeep and his team displayed an extraordinary level of skill, professionalism, hard work as well as trust (very rare these days). No task was too challenging, and his willingness to prioritise our needs and provide thoughtful advice was truly comforting. It's rare to find a builder with such dedication and expertise. Jagdeep is undoubtedly one of the best builders I have encountered. My heartfelt thanks to Jagdeep and his team for their outstanding work. Rest assured, for any future projects, he will be the first person I call. Thank you, Jagdeep, for turning our vision into reality, which more than exceeded our expectations!
UR BUILDERS
Rating: 4.9 out of 5
Extension Builder in West Ham
Hi ,we are doing every type of construction and building work including electric and plumbing. We undertake all kinds of refurbishments and new extensions ,you can see our finished and running jobs anytime. We have alot references .Our aim is customer satisfaction as we always trying to provide a good service in unbeatable price.
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Latest review:
Extensions- 15 Oct 2026
Sal and his team were incredible. Very professional and we had two or three guys working everyday for our first building project. They came early in the morning and very attentive to any asks.Sal himself made himself available for any questions and the work was done at a very high standard. In addition after each day the team always cleaned and tidied the area.
A J Keating
Rating: 5 out of 5
Extension Builder in West Ham
Hello we are a family firm based in north London. With more than15 years experience doing mostly exterior work. We enjoy difficult jobs and like a problem to be solved. Retaining walls, drainage, foundations are our bread an butter.We pride ourselves on a great job at a fair price.
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Latest review:
Groundwork & Foundations- 30 Aug 2022
Axel & his team have done a huge amount of work for us through 2022. They started by building the foundations, and then also built the block walls and the structure for the roof. They also constructed an entire extra timber framed shed. After more than four months of working for me constantly I can say that I'm very happy with the quality and speed of Axel's work. He has worked through all the work we have given him, and all the extra issues that came up, with a pragmatic and competent approach. The site today is unrecognisable from when he arrived (he also removed several tonnes of soil for us etc), and I would hire him again without reservation.
Affordable Building Company
Rating: 5 out of 5
Extension Builder in West Ham
We specialise in both internal and external building works within the domsestic market and offer a compete build sevise from project design all the way to project completion. We have specialist crews for all projects, lofts, extensions and coservatories.
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Latest review:
Extensions- 26 Sep 2012
Andy and his team did a fantastic job. Our neighbours were very uncooperative and restricted noisy working hours quite severely but Andy was very accomodating. He is very easy to talk to and happy to discuss ideas you may have concerning the build. I would definately reccommend him. We are delighted by the extension and will definately use Andy again in the future. Thanks!
FM Building
Rating: 4.8 out of 5
Extension Builder in West Ham
Honest and friendly company, we here at FM Building focus on complete customer satisfaction and make a promise to our clients to offer best quality services at competitive rates. All projects considered and dealt with in a professional manner regardless of the size or duration.
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Latest review:
Handyman- 12 Oct 2018
The flat was left in a very bad state after the tenants left. Marius was able to undertake all the jobs, from changing carpets, redecorate, repairs and clean up. Also gave good advice as I was not able to attend the site in person so Marius kept me updated with photos. The price was also good. Thank you. Will use these guys again.
Mayfair Construction
Rating: 5 out of 5
Extension Builder in West Ham
Hello, We Are Mayfair Construction London, a team which are skilled professionally with a passion for Construction. With over many year of experience combined. Our journey in this field has been driven by a commitment to excellence and a desire to make a meaningful impact through our work. We thrive in dynamic environments where creativity, innovation, and collaboration intersect, and I'm always eager to take on new challenges and opportunities for growth. Whether it's house refurbishment or anything to do with Construction, we bring a blend of expertise, dedication, and enthusiasm to every endeavor. We look forward to connecting and contributing to our shared goals.
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Latest review:
Kitchen Fitting- 18 Jun 2024
They were quite helpful and replied the message immediately. Job done well. Will use them again.
Swift Building Masters
Rating: 4.9 out of 5
Extension Builder in West Ham
General Builder of over 40 years Experience. Carpentry & Joinery Background. I have worked on large and small Projects, Repair, Refurbishment, Extensions, Loft conversions and New-builds. Recently become a member of Federation of Master Builders. ALL WORK QUALITY ASSURED
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Latest review:
Extensions- 5 Nov 2016
Leslie carried out the following works: chemical damp injection to walls on rear extension, reroute down-pipe, repair fracture on rear wall, install gutter hedgehog. Hopefully, this will resolve some of the issues we had with damp, a blocked down-pipe and an overflowing gutter. Leslie arrived on time on the first day but was delayed a few hours the next day. However, the work still was done within two days as expected. Thank you!
FERARU GROUP BUILDERS LTD
Rating: 4.7 out of 5
Extension Builder in West Ham
I've worked in the UK for 8years now and I do my job to a high standard.
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Latest review:
Extensions- 15 Jun 2024
My advice is avoid. Poor communication Poor workmanship Poor quality finish Create 'issues' during build to make you pay more than quoted Left project incomplete We pursued through the Court and won the case, but of course he is unable to pay, so we are pursing further through the Court. He will respond to the review with some excuse, but there is absoultley no excuse for poor workmanship and quality. Happy to share pictures and videos on request.
Onyx Construct Limited
Rating: 5 out of 5
Extension Builder in West Ham
We are a multi-trade construction company operated in domestic sector and we are able to full-fill any building requirement. The scope of projects we have delivered in the past spans from smallest jobs like kitchen or bathroom fitting to extensions, house refurbishments or loft conversions.The majority of our previous clients were extremely satisfied with high standard and quality of work. If you are looking for professionals builders with reasonable prices - you are on the right profile !
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Latest review:
Extensions- 29 Nov 2023
We had the most fantastic experience with Sarunas. He was highly professional from start to finish and completed the work to the highest standard. We extended our project significantly once we realised how excellent he was and he has now renovated our whole home over an 18 month period. He was able to guide us through the process and help us make key decisions which made the experience smooth and efficient. He is extremely skilled in all aspects of building, has high attention to detail and is a pleasure to have in your home! I couldn't recommend him higher and look forward to having him back in future to convert our loft!
SDS CARPENTRY & BUILDING SERVICES LTD
Rating: 5 out of 5
Extension Builder in West Ham
SDS CARPENTRY & BUILDING SERVICES LTD is a team of qualified builders with over 15 years of experience and have all the skills necessary to take on board any building project at an extremely high standard. Yes, we’ll add real value, save you time and effort, keep disruption to a minimum and manage the project from design to final-fit. Our clients choose us because we have exceptional customer service and can deliver projects on time and within budget.
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Latest review:
Carpentry- 9 May 2020
I had a parquet floor laid and was very pleased with the result and attention to detail. Sergiu worked very hard and was a pleasure to deal with.
U.K.R
Rating: 5 out of 5
Extension Builder in West Ham
We are new to mybuilder but have been in the building Trade for 30 years as a Bricklayer, working for myself for the past 20 years Mainly dealing in Extensions and Brickwork. I have a team of tradesmen - a Carpenter Plumber, 2 good Labourers / ground workers.
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Latest review:
Can't speak highly enough of this company.work was not only complete on time but was finished to a high quality. Very polite and helpfull workers.hopeing to get this company back summer 2018 to do our rear extension. Great choice of builders from this site. Thanks my builder .
ShapeUp Constructions LTD
Rating: 5 out of 5
Extension Builder in West Ham
ShapeUp Started in 2015 as a result of two partners` ambitions of creating a construction company that delivers high quality workmanship with a friendly approach towards clients.
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Latest review:
Kitchen Fitting- 11 Apr 2019
ShapeUp did a great job with my kitchen and the tiling. I am very pleased with this. They covered my wooden floors to protect them from damage. They also tidied up after the work. I will definitely be using them again in the future.

4.2

Top rated Extension Builders

Our Extension Builders in West Ham, are rated 4.2 out of 5 based on 21 reviews from customers like you.

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

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 West Ham 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 West Ham who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in West Ham?

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

Find extension builders in West Ham with MyBuilder

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

Step 2: Compare different extension builders in West Ham

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

Step 3: Hire West Ham extension builders with confidence

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

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

What to ask a West Ham extension builder before hiring?

Before hiring an extension builder in West Ham or extension building company in West Ham, 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 West Ham?

An extension builder in West Ham 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 West Ham 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 West Ham?

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 West Ham 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 West Ham 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 West Ham

Can an extension builder in West Ham help with planning permission?

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

Many West Ham 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 West Ham help with materials and finishes?

Yes, most extension builders in West Ham 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.