Extension Builders in Hornsey

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 3.9 (16 reviews)

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Some of our top rated extension builders in Hornsey

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DC Brickwork
Rating: 5 out of 5
Extension Builder in Hornsey
Dear Customers I am honest trustworthy reliable and hardworking and I have over 25 years experience in the industry.
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Latest review:
Bricklaying- 29 Jun 2017
I would recommend Damian. Did a good job, good communication and was on site when he said he would be. Polite and friendly. I would be happy to use again.
Creative Constructions London Ltd
No reviews yet
Extension Builder in Hornsey
We are currently doing projects like extensions, loft conversions and refurbishments We have 20 years of working experience. We offer a multitude of services from the planning permission to the completion of the project.
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Team 1 Construction Ltd
No reviews yet
Extension Builder in Hornsey
Our Vision & Promise At Team 1 Construction Ltd we guarantee to deliver you a stress-free building process and a finished product that will be everything that you imagined — we stake our reputation on it. Everyone working for us is committed to superior project delivery – all the time, every time. We approach each day’s challenges with a “can do” attitude, always ready to deploy our talent for original thinking.
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VALDIS
No reviews yet
Extension Builder in Hornsey
Building,carpentery, furniture installation.loft conversion,extention
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TD Building
No reviews yet
Extension Builder in Hornsey
Fluent in Turkish. I have 45 years of experiencing construction that have worked in all areas including high-rise buildings and rough construction metal work measurements. I understand every part of the process and always deliver quality work. Written by the son of the builder.
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HEXAFORM CONSTRUCTION LIMITED
Rating: 5 out of 5
Extension Builder in Hornsey
HEXAFORM is a London based multi-disciplinary design and build company that has the experience, work ethic, communication tools, and systems in place needed to bring any scale project from a virtual blueprint to reality. Historically the architect-contractor relationship has been one of an ‘us versus them’ mentality. But we’re 'both'. Having a design team under the same roof as a construction company means that the eccentricities of each project are rendered opportunities, rather than obstacles.
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Latest review:
Architecture- 12 Jun 2023
Lots of ideas, step by step explained. Easy to work with. Highly recommend
Fk skyline LTD
No reviews yet
Extension Builder in Hornsey
FK Skyline is a London-based construction company specialising in loft conversions, extensions, and full property renovations. We deliver high-quality workmanship, reliable timelines, and clear communication from start to finish. Our team is experienced, professional, and committed to meeting clients’ expectations while maintaining excellent standards of safety and cleanliness. We take pride in providing honest pricing, attention to detail, and customer satisfaction on every project.
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NA Builders Ltd
No reviews yet
Extension Builder in Hornsey
NA Builders LTD is a reliable and professional building company providing high-quality construction and renovation services. We take pride in delivering excellent workmanship, clear communication, and projects completed on time and within budget. With strong experience in the building trade, we specialise in a wide range of services including extensions, renovations, structural work, brickwork, plastering, and general building projects. No job is too big or too small – we give every project the same level of care and attention to detail. Customer satisfaction is at the heart of what we do. We work closely with our clients to understand their needs, offer honest advice, and ensure the finished result meets their expectations. Our team is hardworking, respectful, and committed to keeping sites clean and safe at all times. If you are looking for a trustworthy builder who values quality, reliability, and professionalism, NA Builders LTD is here to help.
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Kevin Mateus
No reviews yet
Extension Builder in Hornsey
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Schwartzbuild Limited
Rating: 5 out of 5
Extension Builder in Hornsey
COVID SAFE (all materials for protection on work)WorkSafe!We are a Qualified Company , based on quality ,8-10workers fully qualified (gas safe, electric) with 10 years experience!Full Refurbishment ,Kitchen Refurbishment,Bathrooms installation,Painting & Decorating,Flooring,Plumbing,Tiling,Electrical work,Boiler installation, Gas certified,Double Glazing,Plastering,Extensions,Loft Conversion,New Built.We satisfied our costumers every time!Our reputation matters!Free Quotes!24/7for our Costumers!
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Latest review:
Bathroom Fitting- 31 Jul 2023
Good professional service
KEVIN CONSTRUCTION SOLUTIONS LIMITED
Rating: 5 out of 5
Extension Builder in Hornsey
Kevin Construction is a London-based, well-organised construction company specialising in large-scale developments alongside leading UK firms. We offer a full suite of services—from extensions and conversions to structural alterations and landscaping. With a dedicated team, digital management tools, and a focus on quality, we guide every project from planning to successful completion.
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Latest review:
Fencing- 13 May 2026
Kevin turned up on time and did a solid job on my fence. Would use again
Fastway Constructions Limited
Rating: 5 out of 5
Extension Builder in Hornsey
At Fastway Constructions, we are dedicated to redefining the construction industry through sustainable practices and innovative solutions. Based in the United Kingdom, we pride ourselves on delivering exceptional quality and reliability across four key sectors: Residential Constructions, Commercial Constructions, Industrial Constructions, and Renovation & Remodelling Here at Fastway all of our employees are fully qualified, skilled and very experienced building contractors that have worked on hundreds of projects over the years resulting in 100% client satisfaction, full job completion on time, and always well within budget. All employees hold cscs cards for their relevant trades along with health and safety certificates and first aid for a competent safe worksite at all times. We are a building contractor with a professional approach to all our projects. We offer a seamless and multi-trade service, for all domestic projects from new builds, extensions, loft conversion, renovation to fully finished houses, all tailored to meet our clients’ specific requirements.
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Latest review:
Plumbing- 1 Aug 2025
Jitin did a good job in finding a solution to the leak in the washing machine drainage pipe. He used his experience in problem solving and fixed the issue. Thanks Jitin
National construction and maintenance ltd
No reviews yet
Extension Builder in Hornsey
National Construction and Maintenance Ltd is a trusted and experienced construction company with over 25 years of industry expertise delivering high-quality building, renovation, and maintenance services across residential and commercial projects. We pride ourselves on providing reliable workmanship, professional service, and attention to detail on every project we undertake. From extensions and refurbishments to general maintenance and complete property improvements, our skilled team is committed to delivering work to the highest standards, on time and within budget. At National Construction and Maintenance Ltd, customer satisfaction is at the heart of everything we do. Our reputation has been built on honesty, quality craftsmanship, and long-lasting relationships with our clients.
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JM Building Service
Rating: 4.7 out of 5
Extension Builder in Hornsey
Hi my name is Joe from JM Building Service and I would like the opportunity to come and have a look at any works you require my services for. I look forward to meeting you. Thank you.
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Latest review:
Bathroom Fitting- 14 Mar 2025
My previous bathroom fitters did a very bad job with the bathroom and cloakroom toilet and left it unfinished. I am so glad I went with JM Building service as Joe and Martin completely transformed both rooms. They rectified the previous fitters errors and completed the rooms. Joe didn’t just rush through the job to get it done quickly—he took his time, ensuring every detail was finished to a high standard. He worked meticulously, making adjustments until everything looked exactly as it should, rather than settling for ‘good enough.’ His dedication to quality and precision was evident throughout, and the end result speaks for itself. As well as being very good at what they do, they are friendly, reliable, trustworthy and hardworking. I have already booked them in for another job and requested a quote for another. I highly recommend JM Building services for their professionalism and craftsmanship.
GDR construction solution ltd
Rating: 5 out of 5
Extension Builder in Hornsey
GDR Construction Solution Ltd provides a wide range of construction, repair, and improvement services for residential customers. and there is no project too big or small for our team. We are dedicated to delivering superior results at affordable prices,
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Latest review:
He done loft conversion which he did a great job. Completed it in 6 months which in 2 months less agreement. He kept it well done tidy. He done what we had asked to do and completed on. He had a good customer service easy to contact and sort out any issue. I would recommend him to anyone for his work.
House Doctor Services
Rating: 5 out of 5
Extension Builder in Hornsey
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.

3.9

Top rated Extension Builders

Our Extension Builders in Hornsey, are rated 3.9 out of 5 based on 16 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Hornsey?

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

Find extension builders in Hornsey with MyBuilder

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

Step 2: Compare different extension builders in Hornsey

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

Step 3: Hire Hornsey extension builders with confidence

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

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

What to ask a Hornsey extension builder before hiring?

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

An extension builder in Hornsey 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 Hornsey 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 Hornsey?

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 Hornsey 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 Hornsey 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 Hornsey

Can an extension builder in Hornsey help with planning permission?

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

Many Hornsey 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 Hornsey help with materials and finishes?

Yes, most extension builders in Hornsey 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.