Extension builders in Walthamstow

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.4 (18 reviews)

Easily find verified Walthamstow Extension Builders. Just post your job to get quotes from MyBuilder's Extension Builders in Walthamstow.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated extension builders in Walthamstow

3374 Results

Sort by:

Home Renovations Ltd
Rating: 5 out of 5
Extension Builder in Walthamstow
We're a building company specializing in house extensions, loft conversions and refurbishments. Our clients come from New Malden, where we're based, but also surrounding areas. The vast industry experience enables us to provide valuable advice, professional services and individual approach, benefiting our customers. As we understand trust and credibility are crucial when undertaking such projects, we arrange viewings and provide customers with references and photos of our most recent projects.
Get in touch
Latest review:
Extensions- 24 Jun 2017
We had a large piece of work done by Johan and his team. It was a 4m single storey rear extension with new kitchen installation, converting the old kitchen into a downstairs bathroom and utility room, plus other bits and bobs like new boiler, rear patio. We got quotes from a few builders, Home Renovations weren't the cheapest, they were actually towards the higher end. But we went and saw their previous work and spoke to some of their other clients. The work was done to a high quality and the clients seemed to be happy so we decided to go with them. Johan's team are very hard working, professional and polite. Pawel and his team of builders, bricklayers, plumbers, electricians, etc. would turn up before 8am and finish at 6pm working solidly throughout the day. There is Magda as the project manager who keeps you in the loop, and answers any of your questions (which we had many). There is Michaela on the finance side who keeps you up to date with the budget. Our budget went over by 5% with "variations" (extra work or materials) but it was always communicated why and the work wasn't done without our approval. Pawel would give his recommendations but the final word would always be ours. But these things can add up. Overall we were very happy with the build, it was done to a very high standard. They also finished it before time. They said it would take 12 weeks in fact they finished it in 10 weeks which was amazing as you would normally expect these things to go over.
Seraj
No reviews yet
Extension Builder in Walthamstow
Reliable and experienced contractor offering high-quality tiling, painting, plastering, and interior decoration services. I specialise in indoor and outdoor tiling, including garden paving, full bathroom renovations, and kitchen splashbacks. We also provide professional wall partitioning, plastering, and custom decorative finishes. Dedicated to precision, clean workmanship, and timely completion. Contact us for a reliable, professional, and friendly service
Get in touch
Okto building limited
No reviews yet
Extension Builder in Walthamstow
Hello, we are a company based in work with wood, plumbing, electricity and roof tile( standard UK or tile slate), we can give you the best possible quote and the best work quality, keep yourself safe and feel the warmth of renovated houses
Get in touch
Urban Viking Construction Ltd
No reviews yet
Extension Builder in Walthamstow
Hi, my name is Martin. I have more than 15 years of experience with kitchen fitting, carpentry and joinery also owning a construction company for 9 years specialised in Loft Conversions and Extensions. Would be pleasure to complete your project to the highest standards.
Get in touch
Friesian Group Ltd
No reviews yet
Extension Builder in Walthamstow
We are a reliable construction and refurbishment company specialising in bathroom and washroom renovations, as well as all types of home repairs and refurbishment work. Our team delivers high-quality workmanship, attention to detail, and a professional service from start to finish. Whether you need a full washroom makeover or small repairs around your home, we are here to provide fast, trustworthy, and affordable solutions.
Get in touch
Blueprint Developments Limited
Rating: 4.2 out of 5
Extension Builder in Walthamstow
Welcome to Blueprint Builders, where your dream space becomes a reality. Nestled in the heart of London, our team is at the forefront of design and construction innovation. We specialize in transforming spaces into luxurious living experiences, with services that include: - Elegant House Extensions - Meticulous Loft Conversions - Comprehensive Renovations - Bespoke New Builds And a wide spectrum of commercial and domestic building projects designed with your luxury and comfort in mind. At Blueprint Builders, your satisfaction is not just a goal—it's our promise. We're dedicated to bringing smiles to our clients faces through meticulous attention to detail, unparalleled craftsmanship, and a seamless client experience from start to finish. Stay connected with our journey of transformation on Instagram @blueprintbuilder. Follow us for a regular dose of inspiration through updated photos of our latest projects. Dreaming of a space makeover? Don't wait any longer. Contact us today for a complimentary site visit and a personalized quote. Let's make your vision a living, breathing reality.
Get in touch
Latest review:
Extensions- 19 Aug 2026
We paid for the build finished in Sept. 2025. Our concern is the foundations. The drawings specified about 1.8m depth and anti-heave boards due to clay and trees. The builder had not properly checked the drawings, then charged substantial extra for the depth. We paid, but the boards were not installed, and our photos and videos appear to show much of the foundation at about 1m. A replacement Building Controller declined to proceed without evidence of the boards. The patio, including £1,700 extension, was laid without proper excavation or a mechanically compacted base. Some tiles are loose and render is failing. Other faults include uneven floors and walls, falling plaster, catching doors, cladding gaps, poor electrical fitting, missing vents, a possible leak and unfinished items. Attendance was intermittent—about three weeks over two months—and the work felt rushed around other jobs. Our neighbour witnessed two workers urinating behind the shed. We cannot recommend this company...
ADAMAC PLASTERING LTD
Rating: 5 out of 5
Extension Builder in Walthamstow
With over 10 years of experience in the construction industry , I am a dedicated skilled plasterer / multi- tradesman committed to delivering high-quality work on every project. I pride myself on providing reliable, professional, and cost-effective solutions to meet my clients’ needs. Whether you’re looking for specific plastering services , home renovations, kitchen refurbishments, plumbing repairs, or any other type of building work, I offer an attentive, friendly service from start to finish. My goal is to ensure that each job is completed to the highest standard, on time, and within budget. I take great care in my work and always prioritize customer satisfaction. My clients can trust me to listen to their needs, offer expert advice, and deliver exceptional results. Fully insured and accredited CHAS and construction line with a proven track record of successful projects, I am always happy to provide references and showcase my previous work. Get in touch for a free, no-obligation quote!
Get in touch
Latest review:
Plastering- 16 Sep 2024
Adam and his assistant have done a fantastic job. Prompt response and quote. Arrived on time and were friendly and respectful. Got the job done and offered to come back if needed. 100% recommend.
CPR (Complete Property Renovations)
No reviews yet
Extension Builder in Walthamstow
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.
Get in touch
progressivedesign
No reviews yet
Extension Builder in Walthamstow
Progressive Design is a full-service home repair and improvement company.Our team of staff have the expertise necessary to respond to any concern you may have about your home.
Get in touch
London Brickwork and Paving Ltd
No reviews yet
Extension Builder in Walthamstow
We are a London based construction company with over 16 years experience in the industry that specialise in all aspects of Brickwork and Paving, carrying out work on both domestic and commercial properties. Our objective is to help turn your visions into reality
Get in touch
Multiskills
No reviews yet
Extension Builder in Walthamstow
Bathroom ,Garage Conversions, House Extensions Kitchen fitters, Loft conversions, Refurbishments, Refurbishments, Roofing , plumbing ,
Get in touch
4 brothers brickwork
No reviews yet
Extension Builder in Walthamstow
We are a professional bricklaying company determined to offering our clients the utmost quality at competitive rates. Our projects include both new construction and repairs/restorations. From a wall to a new build project. No job is too small.
Get in touch
Buildswell ltd
Rating: 5 out of 5
Extension Builder in Walthamstow
my name is sehaj the main contractor of buildswell ltd.We are a full facilities management and installation company,If you are thinking of renovating your home,building an extension, or changing your roof. Sehaj from buildswell has a local and trusted construction business to provide maintenance and building services of the highest standard at competitive prices. Very friendly and professional
Get in touch
Latest review:
Extensions- 20 Jan 2021
Trusted person good quality extension with no delays
Care and Bussiness ltd
No reviews yet
Extension Builder in Walthamstow
We specialise in managing residential renovation and conversion projects from start to finish. We work with a trusted network of qualified trades and ensure projects are delivered on time, on budget and in line with building regulations. We focus on communication, quality control and smooth coordination between client and trades.
Get in touch
Polytech building services
No reviews yet
Extension Builder in Walthamstow
20 years of trade experience delivering top-tier building work across all major disciplines. Multi-skilled expertise spanning electrical systems, plumbing, roofing, custom carpentry, and decorating. One trusted, reliable professional to handle your entire job efficiently and to the highest standard.
Get in touch
D&N CONSTRUCT LIMITED
No reviews yet
Extension Builder in Walthamstow
responsabil person flexible and happy
Get in touch

4.4

Top rated Extension Builders

Our Extension Builders in Walthamstow, are rated 4.4 out of 5 based on 18 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 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 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 Walthamstow who are available and interested can respond to your post.

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

What are the hourly rates of extension builders in Walthamstow?

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

Find extension builders in Walthamstow with MyBuilder

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

Step 2: Compare different extension builders in Walthamstow

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

Step 3: Hire Walthamstow extension builders with confidence

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

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

What to ask a Walthamstow extension builder before hiring?

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

An extension builder in 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 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 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 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 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 Walthamstow

Can an extension builder in Walthamstow help with planning permission?

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

Many 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 Walthamstow help with materials and finishes?

Yes, most extension builders in 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.