Extension Builders in Upper Walthamstow

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (20 reviews)

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Some of our top rated extension builders in Upper Walthamstow

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Kaseno Group LTD
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
Our company is based in London. We do all aspects of the construction. Our main target is to achieve the finest quality of our services and to satisfy any of the clients' requirements deliver the project on time and achieve a reasonable price.
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Latest review:
Kitchen Fitting- 19 Jan 2019
Very good, professional ,trustworthy team.I can recommend them to anybody. Their communication was excellent. The work they have done is of high stardard and was done on time.
Construction
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
Carpenter Joiner:level 2 Diploma (blue CSCS) 10 years experience in UK 10 years experience back home (Romania) Level 2 Diploma in Electrical &Electronic Engineering Technology (QCF) CERTIFICATE of Attendance Waterproofing in Buildings (Delta Membrane Systems) Certificate of Attendance GRP Roofing (fibreglass flat roof installation) Construction Industry Scheme (sole trader registered)
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Latest review:
Carpentry- 17 Sep 2021
Viorel quoted promptly, arrived on time and did a a great job of the required carpentry jobs at my house - a cat flap and alterations to cupboards. I'm already talking with him about doing other jobs in the future so would definitely recommend Viorel!
Genesis London
Rating: 4.8 out of 5
Extension Builder in Upper Walthamstow
At Genesis London, we are more than a building company — we are the artisans of space transformation. Our passion for construction and design is reflected in our specialisation in exquisite kitchen and bathroom installations, comprehensive full-scale refurbishments, and bespoke extensions that enhance your living space. Our expertise extends to loft conversions, where we create functional and stylish additional areas within your home. We take pride in our property development projects, expertly converting buildings into modern, segmented flats, each with its own unique character. Understanding the essence of personalised touch, we create bespoke built-in wardrobes and shelving units that blend seamlessly with your interiors. Our custom glazing solutions promise not only utility but elegance that complements the aesthetic of your space. Sustainability and innovation are at the heart of what we do. We are innovators in designing and creating reclaimed wood furniture, bringing together environmental consciousness and contemporary design. Our wall-mounted beds are a testament to our commitment to space-saving solutions without compromising on style or comfort. Choose Genesis London for a partnership where your vision is our blueprint. From inception to execution, we ensure a service that is as reliable and steadfast as the structures we create.
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Latest review:
Restoration & Refurbishment- 9 Apr 2024
Hector, Elvis and Fabian did a fantastic job renovating our flat. They laid new tiles in our entryway, solved a number of issues with our flooring, removed an old gas pipe and repainted the walls and woodwork in our hallway. We were really impressed with their professionalism and not only did they do a fantastic job but they were a pleasure to have in our home. Very respectful, friendly and knowledgable. They even finished ahead of schedule. We would highly recommend them and would definitely have them back the next time we do a home renovation project.
E&E construction
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
With over 18 years of industry experience, our construction company specializes in high-quality house extensions and loft conversions across London and Essex. We are committed to transforming homes with expert craftsmanship, tailored design solutions, and reliable project management from start to finish. Whether you're looking to expand your living space, increase property value, or bring new life to your home, we deliver outstanding results that reflect your vision and meet the highest standards of construction excellence.
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Latest review:
Fencing- 9 Sep 2023
Ervin was polite, communicated well and worked hard to get the job done. Would hire again.
A2Z build and fix
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
All electrics qualified to latest 18th edition AM2 NICEIC registered installer Out buildings Brickwork extensions garden walls and pointing chimney stacks city and guilds level 3. Fault finding Full house/flat rewires & part rewires Lighting circuit rewires Smoke alarms , heat detectors Fuseboard/Consumer Unit replacement Upgrading of electrical system Ring circuits Light replacements Security lighting Garage Ring pro doorbell fitter Official Triton shower installer
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Latest review:
Extensions- 7 Jul 2021
Andy and his team did a first rate job with the extension from start to finish. The work was done to an exceptionally high standard to our precise requirements, with all elements completed on time and budget with no problems or fuss. We are completely delighted with the new extension and would have no hesitation in recommending this company to others.
Rise Up Building
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
We are loft conversion, extension, roofing and refurbishment experts - transforming spaces, exceeding expectations. At Rise Up Building LTD, we manage projects of all sizes, ensuring a smooth and stress-free experience. We serve all of London. With over a decade of industry experience. We pride ourselves on being fast, precise and personable, leaving you with your beautiful new space. Our commitment to delivering personalised service ensures maximum satisfaction every time. Contact us for inquiries.
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Latest review:
I recently hire rise up building to do my loft conversion, everything was done fast with care and quality, i really enjoyed having this guys around. Love it how they explained every step and every detail about the work. If you looking for some honest and professional contact rise up building, highly recommend them.
Zenstruction
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
Established in 2005, we are a trusted building company with extensive experience in all aspects of construction, from new builds to fascia and gutter installations. Known for delivering high-quality projects on time and within budget, we maintain the highest standards of workmanship, safety, and reliability. Our expertise spans a wide range of services, ensuring that each project is completed to exceptional standards, meeting both client expectations and industry regulations.
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Latest review:
Extensions- 3 Sep 2018
Zen has helped transform our home, we’ve drawn a lot of confidence from his considered approach and thorough work ethic. He’s so far addressed the cause of cracks to exterior walls of our property and has provided lasting solutions. We also asked him to plaster our hallway and update the banisters for us, Zen has done a great job of reinforcing the strength of the original features whilst retaining the property’s character. Very good with pets too. Looking forward to the next project.
Omar Construction LTd
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
Omar Construction is a family-owned limited company situated in London that has been around for several years undertaking all kinds of construction work such as loft conversions, extensions & refurbishments. We have one simple policy; Make the Customer Happy. For several years we have managed to uphold this very simple policy. With over 21 years of industry experience and an elite team of reputable tradesmen, let us be your first choice, to make your dream project a reality.
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Latest review:
Extensions- 16 Oct 2022
Amazing people ,glad I went with them to do the extension ,they did a really wonderful job .Now we have a builder and a friend to rely on .Thank you very much Mustafa,Omar,Imran and Hamid ,you guys are awesome 👍
Carnot Construction Limited
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
Carnot Construction are committed to ensuring our clients are satisfied from beginning to end, we aim to take the stress out of building work and complete all projects as swiftly and cleanly as possible. We ensure our clients are in safe hands with strict contracts in place to protect both parties. We specialise in Extensions, New builds, Loft Conversions, General Conversions, Kitchen and bathroom renovation/fitting.
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Latest review:
Extensions- 15 Aug 2018
100% RECOMMENDED Michelle and her partner measured up and competitively quoted within a short space of time. She was then very patient and supportive when unforeseen planning issues popped up and set the start date back by quite some time. Once building started, all questions were promptly answered by either the site manager or Michelle, both being available at all times. I was away for the duration of most of the job and it was very reassuring to know that I was leaving it all in capable and honest hands. The workers were very proficient and tidied up after themselves at end of each day. They also put in some very long hours at times to hasten the work. I was also impressed by the handling of unexpected problems during the building (mainly invasive tree stumps!). I am absolutely thrilled with the end result. High quality workmanship and a beautiful building which I am sure will last many years. I would certainly recommend them without a doubt.
Mhilli Constructions LTD
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
At Mhilli Construction London LTD, we take great pride in our excellent workmanship, competitive fees, and the ability to deliver outstanding results. Since our founding, we’ve worked hard towards building and maintaining a stellar reputation as a leading Company. We provide clients with a wide range of services to cover all their needs. No matter what your project might be, our team of professionals is ready to bring your dreams to life.
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Latest review:
Extensions- 7 Mar 2026
Viktor is an excellent builder. He understands the needs of a complex job and mine was a huge renovation project. A side return and extension and full refurbishment of the house including the installation of 3 bathrooms, Kitchen, cupboards and much much more. It’s not quite finished yet but the house is transformed and the work was done incredibly fast, far faster than I had anticipated. I moved out for the duration but I was back in the house within 4 months. The language barrier made things a little harder than they might have been but we got by. If you have someone to project manage the job alongside Viktor I would suggest that but if you want someone who is really very good at his trade and runs a tight team I would recommend Mhilli Construction for your job.
Star Construction
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
STAR CONSTRUCTION is focused on providing high-quality service and customer satisfaction. We will do everything we can to meet your expectations. Our fully qualified builders not leave your entrance door before making sure that you are completely happy with the quality of the work.
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Latest review:
Extensions- 29 Apr 2018
We got side extension done to our house. Silviu and his team did fantastic work They are hard working with top class quality. Silviu estimated work to be completed in 6-7 weeks and they managed to complete work before 7th week irrespective of bad weather. Silviu had good project management skills, weather its making sure his team had all the material they need , organising building control visits, skips, advise on using materials etc He also had good contacts with building suppliers to get special materials I highly recommend star construction
Harpreet
Rating: 4.9 out of 5
Extension Builder in Upper Walthamstow
Singhs Construction : specialises in plumbing,central heating,electrical,carpentry,kitchen fittings,door fitting’s and new builds. Our teams make sure they work to the highest standards on all projects.
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Latest review:
Bathroom Fitting- 16 Jun 2024
Harpreet not only finished this job, being kind, helpful and professional, ended up renovating some of the house hold things like changing gas hob, firting tiles etc, which I was thinking of doing later in year. He completed all the work in the time frame and amount charged was reasonable. He did great job in renovating the bathroom. He went out of way to help install loft stair case. He was always available to answer any queries. Would recommend
Gursevaksingh
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
Gursevak projects limited For more information about our quality and work follow us on instagram and TikTok @gursevakprojectsltd. myself gursevak Singh. We have more than 5 year experience. We are specialist to providing any kind of house work like digging, foundation,loft conversion, house extensions, bathroom works,paint,tiling paving ,patio slabs etc near london. We are given one year guarantee and good quality of work with good price. thank u
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Latest review:
Plastering- 18 Feb 2025
Came to look at the job thoroughly and gave me options. I thought the quote was thoughtful. The guys that visited made me feel confident they knowledgeable and would get the job done as specified. Work completed to high standard, cleared up after themselves. Great job
Cole and Son decor ltd
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
I'm a very honest, reliable and hard working person. I always leave the job I started in very good condition and completed in the allocated time. I always provide the client with the best solutions for the job and keep my costs clear and fair.
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Latest review:
Victor (Vica) laid some engineered oak wood flooring for us in a house that we bought at the end of 2013. The house needed lots of work doing and the new flooring was just one of the many jobs undertaken by Victor and carried out to a very high standard for us. He always paid attention to detail, ensured that the flooring was level and that the new skirting board fitted flush to the floorboards. He was also always able to provide a solution to any problems encountered during the renovation works. I would have no hesitation in recommending Victor as he takes the same pride in his work for others as if he was carrying out work in his own home.
Omerta Builders Limited
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
We undertake many jobs and specialise in extensions, loft conversions, painting and decorating, bathrooms, kitchens, and plumbing and electrical works. We work all over London, and have even completed jobs outside of London too. We take pride in the quality work we deliver, and make sure customer satisfaction is at the forefront of what we do. Combined within the company we share 30 years of construction experience.
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Latest review:
Extensions- 11 Jun 2019
Very good builders. Came on time every day and finished work on time. Very reliable and trustworthy. We had quite a few hiccups along the way but they always managed to find a solution. Would definitely recommend them and use them again.
Sunshine design & build ltd
Rating: 5 out of 5
Extension Builder in Upper Walthamstow
Sunshine Design & Build Ltd “Turning your vision into reality” We are a London-based construction company specializing in: • Full home renovations • Bathroom installations and tiling • Extensions and structural work • Plumbing, kitchen,electrical, and roofing services
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Latest review:
Bathroom Fitting- 8 Jan 2026
We couldn’t be happier with the bathroom and toilet refurbishment carried out by Sahir. From start to finish, the workmanship was outstanding and the attention to detail really shows in the final result. The spaces have been completely transformed and finished to a very high standard. Sahir was professional, reliable, and respectful of our home throughout the project, always keeping the area clean and tidy. Communication was clear and honest, and everything was completed on time. We’re absolutely delighted with the results and would highly recommend them to anyone looking for high-quality refurbishment work. A truly excellent job!

4.2

Top rated Extension Builders

Our Extension Builders in Upper Walthamstow, are rated 4.2 out of 5 based on 20 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 Upper Walthamstow?

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 Upper Walthamstow 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 Upper Walthamstow who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Upper Walthamstow?

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

Find extension builders in Upper Walthamstow with MyBuilder

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

Step 2: Compare different extension builders in Upper Walthamstow

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

Step 3: Hire Upper Walthamstow extension builders with confidence

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

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

What to ask a Upper Walthamstow extension builder before hiring?

Before hiring an extension builder in Upper Walthamstow or extension building company in Upper Walthamstow, 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 Upper Walthamstow?

An extension builder in Upper Walthamstow 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 Upper Walthamstow 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 Upper Walthamstow?

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 Upper Walthamstow 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 Upper Walthamstow 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 Upper Walthamstow

Can an extension builder in Upper Walthamstow help with planning permission?

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

Many Upper Walthamstow 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 Upper Walthamstow help with materials and finishes?

Yes, most extension builders in Upper Walthamstow 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.