Extension Builders in Blackfriars

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 reviews)

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Some of our top rated extension builders in Blackfriars

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Apex Plan & Build LTD
Rating: 5 out of 5
Extension Builder in Blackfriars
Apex Plan & Build is your trusted partner in turning vision into reality. Specializing in both domestic and commercial construction, we are dedicated to transforming houses into dream homes and businesses into efficient, modern spaces. With over 30 years of collective industry experience, our team ensures every project is completed to the highest standard, offering expertise in M&E works, including air source heat pumps and MVHR ventilation systems. We also bring cutting-edge innovation to your space with smart home automation solutions like Loxone and Control4, creating environments that are not only beautiful but also intelligent and energy-efficient. Apex Plan & Build is where your dream project is our top priority.
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Latest review:
Very professional and organised. My rear extension renovation was impeccable, thorough knowledge of building regulations with a variety of services to choose from really put me at ease. The venetian plaster feature wall has become the centrepiece of our home.
HARMANRAJ CONSTRUCTION
Rating: 4.9 out of 5
Extension Builder in Blackfriars
Business Name: Harman Raj Constructions Ltd About Us: At Harman Raj Constructions Ltd, we bring 7 years of experience in roofing, building extensions, plastering, driveways, and fencing. We take pride in delivering high-quality craftsmanship for every project, whether big or small. Why Choose Us? • Expertise You Can Trust: Our 7 years in the construction industry mean we have the skills to handle a wide range of projects. • Customer-Focused: Your satisfaction drives everything we do. We work closely with you to ensure the final result matches your vision. • Specialized Skills: From roofing and extensions to plastering and fencing, our expertise ensures excellent results. • Quality & Reliability: We deliver on time, within budget, and without compromising on quality. Services We Offer: • Roofing installation, repairs, and maintenance • Building extensions and renovations • Expert plastering • Driveway construction • Fencing installation and repair Contact us today for a free quote and let us bring your construction ideas to life!
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Latest review:
Plastering- 11 Apr 2026
Absolutely thrilled with the work carried out by Harman. The skimming has been completed to an exceptionally high standard - the finish is incredibly smooth and completely seamless. Harman and his colleague were professional throughout: tidy, courteous, and very polite. They took great care to properly protect and cover the surrounding areas, leaving everything clean and intact once the job was done. What really stood out is their attention to detail and commitment to getting everything perfect - even offering to return for any final finishing touches if needed. I honestly couldn’t recommend them highly enough. Brilliant job from start to finish.
DDR Group Ltd
New on MyBuilder
Extension Builder in Blackfriars
DDR Group Ltd is a professional building and refurbishment company providing high quality construction services across London and Essex. We specialize in bathroom fitting, kitchen installations, full property refurbishments, extensions, loft conversions, roofing, decorating, carpentry, groundwork, drainage and general building works.
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JJPeachey Carpentry
No reviews yet
Extension Builder in Blackfriars
A qualified carpenter, competent in all aspects of carpentry. Site and residential work experienced. Happy to look at any types of work.
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ELDERMANOR LIMITED
Rating: 4.4 out of 5
Extension Builder in Blackfriars
I have a company of 10 people who experience .Our team including experienced builders,from 5 year to more than 25 years. Our rules are respect and professional that including quality in all our jobs even if is small or big one. we work with low prices.
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Latest review:
Tiling- 7 Jan 2015
Hired to tile a wall, came next day and did a good job. They cleaned up the area when the job was done.
RS Homes
Rating: 5 out of 5
Extension Builder in Blackfriars
We offer an affordable and competitive service locally for: Landscaping, Gardening & Garden Maintenance, Decking, Restoration & Refurbishment, Extensions, Conversions - General, Loft Conversions. With over 15 years experience in the construction and landscaping industry you can rely on us to provide a professional, punctual and trustworthy service. No obligation quotations provided upon request.
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Latest review:
Landscaping- 3 Jun 2021
On our first meeting I felt comfortable and was glad of input from Robin. Agreed to a plan and only had to wait a few weeks before work could start. All preparations made to protect my drive before skip arrived. All work carried out in a very professional manner and team were very polite and friendly. Even though weather was against ground works they provided shelter so work could continue. I’ve been very pleased with their approach and can’t fault the outcome. Although met with a couple of delays on garden furniture, (nothing to do with Robin and his team, circumstances outside control)all other aspects of this job have met with my approval. Was apprehensive of having people in but can honestly say there have not been any issues and when the skip was removed within an hour, Robin was back on site to clear and wash down the drive. So looking as good as new. It’s been a pleasure having them on my property and will look at using their services again in the future should the need arise. Nothing too much bother. So my thanks to them all.
AL Construction
No reviews yet
Extension Builder in Blackfriars
Hi, I’m Alex. I run a small team specialising in general construction and property refurbishments across South East London and beyond. No job is too big or too small — from repairs and renovations to complete refurbishing projects, we handle it all with attention to detail and reliability. If a project requires specialist skills, I work with a trusted network of subcontractors to make sure every part of the job is done to a high standard. I take pride in delivering quality work, on time, and keeping my customers happy.
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Redmark Contractors Limited
Rating: 5 out of 5
Extension Builder in Blackfriars
Redmark Contractors Limited have over 10 years experience, and with many years experience in the building trade. We are a professional team are reliable builders operating in London and the wider area. We take great pride in all work which we undertake, taking great care to make sure that our client’s needs are met in a meticulous and professional manner.
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Latest review:
Extensions- 27 May 2025
They helped build me two houses and were always putting their best foot forwards. Bhupinder and his team are lovely, and are now like family to me. They have a bright future ahead for themselves and for the clients they look after.
All in one builders
Rating: 5 out of 5
Extension Builder in Blackfriars
At All In One Builders we take pride in being your trusted partner for all your construction needs. With a wealth of experience and a commitment to excellence, we specialise in a wide range of building services tailored to meet your unique requirements.
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Latest review:
Akash made sure the job was complete exactly how he said it would be, he provided reliability during the installation of our kitchen and answered all questions very professionally. The builders were well aware of the conversations my mother and I had with Akash and so put our mind at ease. The installation itself was very quick (the tear down was very much completed in a few hours) and installed over the weekend. They were very hygiene aware and set up a cover between the kitchen and the rest of our house and didn’t disrupt our home living. They cleaned up before they were gone to very high standards without us even asking them too, all I’m sure is due to Akash’s excellent organisation skills.
House Doctor Services
Rating: 5 out of 5
Extension Builder in Blackfriars
House Doctor services is a new business operating in London,Berkshire and Bedfordshire. We are a team of 3 people with 7 years experience in demolition, painting and decorating, tilling,kitchen fitting, flooring,gardening. We are growing each day, with new clients added each week. Our clients are our friends so we treat everyone like family. we are available 24/7, we offer free quotes on all the jobs. Give us a try today.
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Latest review:
Demolition- 3 Sep 2020
Happy to recommend - completed the job very quickly and cleared up tidily after themselves.
Nova Building LTD
Rating: 5 out of 5
Extension Builder in Blackfriars
I am an experienced general builder offering a wide range of construction and property improvement services. My work covers all aspects of building, from small repairs to full renovations, ensuring high-quality workmanship and attention to detail at every stage. Services include brickwork, plastering, carpentry, painting and decorating, tiling, flooring, and general maintenance. I take pride in delivering reliable, efficient, and cost-effective solutions tailored to each client’s needs. All work is carried out to a professional standard, with a strong focus on safety, cleanliness, and meeting agreed deadlines. Fully committed to customer satisfaction, I maintain clear communication throughout the project to ensure expectations are met and results are delivered to a high standard.
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Latest review:
Bricklaying- 6 Jul 2026
Andrei built me a front wall, brilliant job, will certainly use him again. Really nice guy as well. If you have any any sort of work to be carried then use this guy, best craftsman we have ever had, come and see his work.
Dominant construction ltd
No reviews yet
Extension Builder in Blackfriars
Dominant Construction is a customer centric integrated building company specialising in home renovations, loft and basement conversions, and kitchen extensions. With over a decade of experience, we have designed our processes to ensure that our clients projects run smoothly - always on-time and always on-budget. We keep clear lines of communication at all times to make sure projects are collaborative and executed with our client's needs at the forefront.
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Dominik Dudziak
No reviews yet
Extension Builder in Blackfriars
I am a skilled builder with many years of experience. If you are looking for someone to plaster your kitchen, bathroom, or other room, please do not hesitate to contact me. I am happy to help.
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ABS Development Group Ltd
No reviews yet
Extension Builder in Blackfriars
ABS Development is your expert in Refurbishments and Emergency repairs
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ARL
No reviews yet
Extension Builder in Blackfriars
painting, ceramics, plumbing. I like to be responsible, good quality in my work, guaranteed
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Mj constructions
Rating: 5 out of 5
Extension Builder in Blackfriars
Hi, I'm Abdul Majid, an experienced plastering, renovations, and construction expert with over 18 years of expertise. At Plaster House Ltd, we pride ourselves on exceeding client expectations through our commitment to delivering high-quality results and exceptional service. I offer free quotation with a visit. I provide written quotation with a break down of all the expenses so you know exactly what you are paying for. I look forward to providing my service to you.
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Latest review:
Plastering- 4 Feb 2019
MJ was great and has lots of experience. He got the job done in no time and was very clean and tidy whilst doing it. His prices were also fair compared to other quotes, and he knows what he is doing. We have more work to do, and will definitely call him back!

4.1

Top rated Extension Builders

Our Extension Builders in Blackfriars, are rated 4.1 out of 5 based on 18 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Blackfriars?

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

Find extension builders in Blackfriars with MyBuilder

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

Step 2: Compare different extension builders in Blackfriars

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

Step 3: Hire Blackfriars extension builders with confidence

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

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

What to ask a Blackfriars extension builder before hiring?

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

An extension builder in Blackfriars 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 Blackfriars 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 Blackfriars?

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 Blackfriars 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 Blackfriars 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 Blackfriars

Can an extension builder in Blackfriars help with planning permission?

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

Many Blackfriars 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 Blackfriars help with materials and finishes?

Yes, most extension builders in Blackfriars 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.