Extension Builders in Blackheath

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.7 (19 reviews)

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Some of our top rated extension builders in Blackheath

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SW Heating & Refurbishments Ltd
Rating: 5 out of 5
Extension Builder in Blackheath
SW Heating & Refurbishments is a local refurbishment company specialising in complete property refurbishments, extensions and loft conversions, new heating systems and boilers. We take pride in all of our work and our aim is to provide you with a quality finish, tailored to your budget. With over 19 years experience, we have built up an extensive team of tradesmen allowing us to provide an outstanding service. We are fully insured and all our work is gas safe and NICEIC certified.
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Latest review:
Conversions - General- 20 Mar 2024
Charlie & Richard did a great job. They visited my property to get an accurate quote. They let me visit another property they are developing which gave me confidence that they were more than capable of my job. They carried out the work quickly and to a high professional standard. Wouldn't hesitate to use them again.
TerraMax Ground Work
Rating: 5 out of 5
Extension Builder in Blackheath
TerraMax it’s specialised in all sorts of ground works and we have our own machinery mini digger, dumper and piling machine etc . - standard foundations - piled foundations - block and beam foundations - drainage installation - driveways - patios - landscape
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Latest review:
I was recommended George via a family member that had there drive built. I was very impressed by the work that was done and had made up my mind there and then that George would build My drive. It was built exactly the way I wanted it without any hassle and stress. The work George does is amazing and with great care and very important a clean job. If your looking for great results without any stress then George and his team are for you.
ARL
No reviews yet
Extension Builder in Blackheath
painting, ceramics, plumbing. I like to be responsible, good quality in my work, guaranteed
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Builders in Sutton
Rating: 5 out of 5
Extension Builder in Blackheath
About company We understand that remodelling any environment can be a stressful and complex undertaking but by working closely with you throughout the project we can identify your needs and minimise the stress wherever possible. We have hand-picked our suppliers, using only quality products and recognised brands. This ensures a consistent, high standard of refurbishment works all of our products .
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Latest review:
Kitchen Fitting- 9 Aug 2026
Andy was brilliant from start to finish. Friendly, professional, very knowledgeable and willing to offer advice (but also happy to do it the customers way!). We had a large kitchen fitted with appliances and there were the usual “adjustments” off plan required -Andy did them without making a fuss. I would happily recommend Andy to a friend for kitchen fitting.
AK Electrical Services
Rating: 5 out of 5
Extension Builder in Blackheath
AK Electrical services is part of Crest Construction & Interiors Ltd. We carry out full building works from foundation to the roof. We are specialised in basement and underpinning works. Our trade people are fully qualified and we work to the highest standard. We have many years experience in domestic electrical and commercial installation. We provide electrical services for all domestic/ commercial projects. We are registered in ELECSA PART P SCHEME, 17th edition. All works are guaranteed.
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Latest review:
Fully electrify a new rear, 2 storey side, porch extension and shed. Arek was always the first one on site, worked very professionally, interacted well with the other builders and was happy to accommodate minor changes to the project. He suggested improvements to the the lighting layout and configuration were taken aboard. I highly recommend him and I'll also be using him to change my house consumer unit in the coming weeks.
5 Star Renovations
Rating: 5 out of 5
Extension Builder in Blackheath
Hello, We are a home renovation company specialising in Kitchens, Bathrooms and all other internal works. High quality work whilst working at a good pace to ensure completion. We look forward to working with you.
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Latest review:
Plastering- 25 Jul 2024
Lewis and his team were very professional. They treated my house with respect. They delivered the job on time and to an excellent standard. Competitive price and very efficient service, will definitely use him again.
paul king
Rating: 5 out of 5
Extension Builder in Blackheath
With 20 years experience of quality through excellence has established our company as one of the leading providers of building services in the London area We specialise in home extensions, damp proofing , interior and exterior refurbishment for the modern and traditional home. we know our client focused culture, our commitment to quality services and our passionate approach to execution of works is a proven formula which gets the best results.
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Latest review:
My partner and I are so pleased with the extension work which Paul & team carried out, not just what was done but also the way it was done. All of the team were great - they turned up when they said they would, and simply got on with their work, They were all polite, friendly, helpful, conscientious, and made several suggestions to improve the finished work. They frequently checked on details with us as the work progressed to ensure that we was satisfied and our needs were met, we was extremely impressed with how they understood & handled our neighbours, will definitely use again in future projects!
ARRA BRICKWORK
Rating: 5 out of 5
Extension Builder in Blackheath
ArrA Brickwork Team is a small run family business. Covering London, Essex, Middlesex, Kent, Surrey areas. We are offering high quality bricklaying and building services at affordable prices, carried out with 18 years of experience in the construction industry. Our team seriously and punctually to work. We offer all kind of building from small garden walls to the housing and commercial projects.
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Latest review:
Extensions- 23 Feb 2020
We hired Arra brickwork to complete what looked like a straight forward side extension, this soon became very complex due to the angle of the build and the roofing. Whilst we had our own expectations, Aushra was very helpful in presenting more ideas and suggestions in line with what we wanted. She even went as far as building sample model to show us what the build would look like. We found Arra brickwork - Aushra and Authur to be genuinely nice people, they are very polite and very tidy workers and put in so much effort to complete the build, even when we didnt expect them they were there working hard. We had full visibility of spend as Aushra was prompt at letting us know how much materials would cost including the initial quote for the build which was reasonably compared to what we had previously been quoted. We could not ask for a more trustworthy team of builders who cares about what they do and I will not hesitate to hire Arra Brickwork again for any more projects.
Making Rooms Ltd
Rating: 5 out of 5
Extension Builder in Blackheath
We are a south London-based building firm that specialises in breathing new life into homes. We work closely with our clients,alongside visionary architects, engineers and designers to unleash potential in their house and realise new and improved spaces. Whether your house requires expansion,our team of specialists work tirelessly to deliver the perfect home for you. Making Rooms are a group of passionate and multitalented individuals whose soul mission is to make your living spaces better.
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Latest review:
Extensions- 25 Jul 2024
Garden Room done to ridiculous standard. See pics. 5 star work from the lads.
ADJ Builders Limited
Rating: 5 out of 5
Extension Builder in Blackheath
Hello ..my name is Alfred. I, have over 12 years of experience in building site. Perfectionist in my work and ability to guarantee customer satisfaction. Hard working and ensures all deadlines and targets are met. A good eye for detail, precise and accurate at all times and will complete all work to the highest standards.My experience shows in the finish, with no visible streaks. Polite friendly and helpful.
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Latest review:
Painting & Decorating- 6 Oct 2022
Very pleased with our choice. We initially got four quotes from different builders, most of them were terrible at communicating apart from Alfred. He was very easy to work with, responsive and very careful with our brand new house. His team was hard working, tidy and fast. They completely renovated our garden from removal of old decking and gravel to setting up new fences, levelling and turfing the ground. They also removed our old kitchen, partition wall and carpet, as well as did jobs like plastering, building a wall and set up lights and shelves. We’ll surely have him back soon to work on other jobs.
Vadym Kutsak
Rating: 4 out of 5
Extension Builder in Blackheath
I have 7 years in basement, underpinning, extension. Was working at company "Hughes design&build" Have good knowledge in job
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Latest review:
Groundwork & Foundations- 5 Aug 2026
Vadym was very careful and considerate to drive the digger through a very narrow gap with no margin for error. He did an excellent job to dig out the section and tidy away the mess. I would recommend and hire again
MM
Rating: 5 out of 5
Extension Builder in Blackheath
We are a highly experienced kitchen and bathroom design and installation company with over 20 years of proven expertise in delivering exceptional results. We provide a comprehensive, end-to-end service—from detailed consultation and bespoke design through to precise, high-quality installation—or a dedicated installation service tailored to your specific needs. Our work is defined by technical accuracy, refined craftsmanship, and a deep understanding of both aesthetics and functionality. We deliver bespoke kitchen and bathroom solutions across a full spectrum, from well-specified standard projects to luxury, high-end installations, all executed with exacting standards and attention to detail. Operating throughout London and the surrounding areas, we are committed to delivering a consistently high level of service, underpinned by expert guidance and industry knowledge. Every project is approached with a structured, client-focused process, ensuring clear communication, efficient delivery, and outstanding results. Regardless of the size or complexity of the project, we work in close partnership with our clients to accurately interpret their vision and requirements—translating them into expertly crafted spaces that meet the highest professional standards.
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Latest review:
Kitchen Fitting- 7 Sep 2026
Michael our kitchen fitter was amazing and went beyond the call of duty, especially as he took over an old kitchen with old pipes. So he had to re adjust everything and take serious measures to make sure that there were no leaks even though it was quite an old system and he adjusted cabinets to bypass the protrusions. He’s very nice and honest and good to work with so you can be sure you’re in good hands with him.
Jai construction Ltd
Rating: 5 out of 5
Extension Builder in Blackheath
We are the experienced any kind of building work from the long time.
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Latest review:
Excellent work, honest, reliable, friendly and very professional. I would definitely recommend. Already planning to use them and have recommended to my friends group as well.
Gursevaksingh
Rating: 5 out of 5
Extension Builder in Blackheath
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
Crimson Design & Build Ltd
Rating: 5 out of 5
Extension Builder in Blackheath
As a contractor I've been in the building business for five years now and my reputation is growing from strength to strength. So far all my jobs have been referrals from previous customers. I've expanded my team and they all know meeting customers's expectations is number 1 priority.
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Latest review:
Firoj and his team renovated a bathroom for me in March 2015. He gave me a fixed cost for his labour and what turned out to be a very accurate estimated cost for all the parts/materials at the outset. He also gave me a completion time of 9 days with 1 extra day for 'spillovers' and 'unforseen delays'. He finished the job at exactly 9 days and still came around on the 10th day to see how everything was working. The quality of his work was excellent, to say the least. He attention to detail was admirable, as was his commitment to delivering a finished product that would last several years. This focus on detail and longevity is something that really sets Firoj apart from other builders, who often see such jobs as just another task to be completed before moving onto the next job. I have no hesitation in recommending him. Several months later my bathroom still looks great and everything works.
Nicely Done Always
Rating: 5 out of 5
Extension Builder in Blackheath
Our success is a your happiness. We strive on achieving high standard finishing to achieve high level of customer satisfaction. With us you can’t go wrong. From kitchen and bathroom renovation, to landscaping and gardening work we do it all. So lets get in on and make it happen.
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Latest review:
The guys from NDA have really have executed the works i wanted carried out on another level. The tiling in the bathroom is just lovely. The whole bathroom feels so different i still cannot believe it. Well above my expectations if im honest. Thanks guys. i will definitely be in touch on my next project.

3.7

Top rated Extension Builders

Our Extension Builders in Blackheath, are rated 3.7 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 Blackheath?

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

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

What are the hourly rates of extension builders in Blackheath?

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

Find extension builders in Blackheath with MyBuilder

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

Step 2: Compare different extension builders in Blackheath

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

Step 3: Hire Blackheath extension builders with confidence

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

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

What to ask a Blackheath extension builder before hiring?

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

An extension builder in Blackheath 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 Blackheath 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 Blackheath?

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 Blackheath 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 Blackheath 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 Blackheath

Can an extension builder in Blackheath help with planning permission?

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

Many Blackheath 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 Blackheath help with materials and finishes?

Yes, most extension builders in Blackheath 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.