Extension Builders in Hornsey

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

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

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 Hornsey

3470 Results

Sort by:

B COTA CONSTRUCTIONS
No reviews yet
Extension Builder in Hornsey
My name is Tim, I have worked as Carpenter for the last 25 years all across London. My specialty is carpentry and anything woodwork related. For example, loft conversions, floor fittings, kitchen fittings, door and window fitting, skylight fitting, stud work, designing, etc. I have worked on big and small projects over the years and willing to travel all across london. I have all tools and a van required for my work.
Get in touch
Asrn construction ltd
No reviews yet
Extension Builder in Hornsey
I have been working in the construction more then 10 years ,I can work anywhere in the uk.
Get in touch
Uzi Construction Ltd
No reviews yet
Extension Builder in Hornsey
We are a team of reliable, friendly and committed builders. We aim to complete our projects on time and precisely. Our priority is customer satisfaction.
Get in touch
raza construction & development limited
No reviews yet
Extension Builder in Hornsey
I am a Civil Engineer who has Studied MSc in Civil Engineering at UCL I have work experience in the Construction Industry as a Civil Engineer/Site Manager I have experience in all building work from planning and design to managing the whole project including New Development, loft conversion, and rear and side extension, Painting and decorating. all works will be done according to UK building control regulations.
Get in touch
shalom property development ltd
Rating: 5 out of 5
Extension Builder in Hornsey
Shalom Property Development ltd is a small construction company based in the Croydon area. We specialize in property refurbishment, house extensions, loft conversions, garage conversions, etc. We also undertake projects like plastering, painting/decorating, electricity, plumbing, tiling, flooring(laminate, wood, bamboo), bricklaying.
Get in touch
Latest review:
Plastering- 6 May 2025
Amazing guys. Hardworking, tidy, professional. They worked in our house for 3 months and we were super happy with the work and everything. We invited them to do more work later on. 100% probably the most sincere and trustworthy builders we met. Only them. No one else from now on.
Appexconstruct
No reviews yet
Extension Builder in Hornsey
We deliver quality construction with precision, safety, and reliability. We create residential, commercial, and industrial projects that stand the test of time. In our team we value innovation, sustainability, and client satisfaction—building not just structures, but lasting partnerships.
Get in touch
Efficient construct ltd
No reviews yet
Extension Builder in Hornsey
Efficient Construct prides itself on their extensive experience in construction management, with over 15 years of successfully completing various projects. Our team of professionals are dedicated to delivering high-quality results, ensuring that every project is completed with precision and attention to detail. We specialize in managing all aspects of the construction process, from design and planning to project completion.
Get in touch
Rares Cristian Lupu
Rating: 5 out of 5
Extension Builder in Hornsey
I am a sole trader working for myself for more than 10 years. Family experience over 35 years. I deliver all services from painting, dexorating, bathrooms, kitchens, full house builds, loft conversions, rear / side extensions, landscaping, plastering and plumbing/electric. Reliable and respectful to all my clients!
Get in touch
Latest review:
had an excellent experience working with Cristian on my bathroom project. From start to finish, his work exceeded all expectations. Cristian was professional, attentive to my needs, and incredibly detail-oriented. His craftsmanship and commitment to quality were evident in every aspect of the project, and he transformed the space beautifully. He kept communication clear and made sure everything was completed on time and according to my vision. I am thrilled with the results and highly recommend his services.
Novus Construction Limited
No reviews yet
Extension Builder in Hornsey
Novus Construction Limited is a trusted building contractor dedicated to delivering exceptional service, high-quality workmanship, and reliable project management. We take pride in completing projects on time, within budget, and with clear, consistent communication throughout the process. To ensure your complete satisfaction and seamless communication, we assign a dedicated project manager to oversee every aspect of your project from start to completion. We specialise in a wide range of services, including but not limited to: • New Builds • Extensions • Loft Conversions • Refurbishments • Bathroom & Kitchen Fitouts • Carpentry & Joinery • Tiling If you’re ready to discuss your project or need expert advice, don’t hesitate to reach out. We’d be happy to offer a free, no-obligation quote and help bring your vision to life.
Get in touch
Peterbuild
No reviews yet
Extension Builder in Hornsey
I currently work for my self as a solo trader all my work are by recommendation but i will like to try something new. work i undertake are general building work for example, bathrooms refurbishment , kitchens ,plastering etc.
Get in touch
PRASH DEVELOPMENTS LIMITED
Rating: 5 out of 5
Extension Builder in Hornsey
PRASH DEVELOPMENTS LTD specialises in construction of Large Luxury New build Home, HMO & Flat developments, Extensions and Loft conversions We are team of skilled professional with 13 years of combined experiences. We pride ourselves in offering best quality hassle free service with effective pricing and timely delivery. Please feel free to contact us for any construction related information.
Get in touch
Latest review:
The builders were in time and a great job done in one day when others quoted for 3 days job — all done with great professionalism and satisfaction — will give them 10⭐️
Renovations.Tm
Rating: 5 out of 5
Extension Builder in Hornsey
We are an experienced and reliable company specializing mainly in extensions, basements, conversions, skylights. We can carry out renovations or building works to your dream home. As we say, Well Done Is Better Than Well Said, come and check us out now !!!
Get in touch
Latest review:
Tomasz and team did various jobs for me (wooden floor, skirting boards, acoustic wall and floor insulation, plastering, painting, electric work etc). Top finish and workmanship, extremely professional and reliable, friendly, helpful, considerate, punctual, honest, tidy worker.
ASECO Electrical Solutions
Rating: 5 out of 5
Extension Builder in Hornsey
I'm a qualified and self employed electrician with over 10 years experience in electrical industry. I specialise in all aspects of domestic and commercial installations. With me you will get high quality standard of work and reliable services at competitive price.
Get in touch
Latest review:
Electrical- 29 Apr 2022
Did really great work for a fair price. Will definitely use again. Very informative and he helped get plugs in the right place
Singh Delivers Ltd
Rating: 5 out of 5
Extension Builder in Hornsey
I love to install carpets. Carpet isn’t just a floor but a lifestyle. I specialise in carpet fitting and maintenance. I tend to provide quality work for clients through years of experience. Every job requires a coordination between client and company, and this is how I work by coordinating with client because end of the day client would be looking at work and shouldn’t have any second thoughts.
Get in touch
Latest review:
Carpets & Lino- 13 Sep 2026
Couldn’t recommend this guy enough! He was incredibly helpful, professional and went above and beyond to help us when we were in a bit of a difficult situation. He genuinely saved us from what could have been a massive issue and we’re so grateful for his help. Really friendly, knowledgeable and clearly takes pride in his work. It’s rare to come across someone who cares that much about helping their customers. Would 100% recommend and will definitely be using him again in the future. Thanks again!
Kovacibrothersltd
No reviews yet
Extension Builder in Hornsey
An established family run business We do our best to make the best out of the best We will get the job done We are happy only when the client is happy Try us you won’t be never disappointed Thank you very much Soon hopefully we will be in touch Kinde regards Kovacibrothersltd
Get in touch
Brits construction ltd
Rating: 5 out of 5
Extension Builder in Hornsey
Brits has vast knowledge & experience of residential projects and has built several Modern Loft conversions, Major Side & Rear Extensions and whole house Internal Refurbishments. We Offer; Project Management. Program of works. Regular Meetings with the client. Liaise with the local authorities. We execute Projects on time, within budget and with the highest quality. Best housekeeping and H&S Standards. Employees & Public Liability Insurances. Member of FMB, LABC, Trust Mark, NABC
Get in touch
Latest review:
Extensions- 21 Jul 2023
We had a loft conversion and a 9x3m rear extension constructed. We also had underfloor heating, flooring, a new staircase and air con installed. We are happy with the result and would recommend this company. They have also respected warranty and fixed issues that have come up after construction and decorating work completed.

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.

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 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.