Extension Builders in Harringay

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (17 reviews)

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Some of our top rated extension builders in Harringay

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Memaar Construction
Rating: 5 out of 5
Extension Builder in Harringay
Our Expertise MEMAAR Construction is a business specializing in refurbishment, renovation, extension, painting, flooring, decoration, tiling, and demolition services. With a commitment to quality craftsmanship and a customer-centric approach, MEMAAR emphasises personalised service and priorities client needs. The business is supported by an expert team in the construction industry and aims to use sustainable practices while offering affordable pricing without compromising quality. Refurbishment is about improving or refreshing existing structures without making major changes to the layout. It often involves repairs, repainting, replacing fixtures, or upgrading finishes to bring a building back to a good condition. For example: updating office interiors, repairing walls, replacing windows, or modernizing outdated spaces.
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Latest review:
Hard Flooring- 1 Jul 2026
I recently had my wood flooring installed by this company, and I couldn’t be happier with the results. The team was professional, friendly, and incredibly helpful throughout the whole process. Their workmanship was of a very high standard, and they took great care to ensure everything was completed beautifully. They were always approachable and happy to answer any questions, making the experience smooth and stress-free. I would definitely recommend them to anyone looking for quality flooring and excellent service. Thank you for a fantastic job!
House2Home
Rating: 5 out of 5
Extension Builder in Harringay
House to Home Atelier is a local building company based in Abbey Wood, South East London. We specialise in end-to-end home renovations and construction, from initial design and planning to final finishes. Our team delivers loft conversions, house extensions, full refurbishments, bathrooms, kitchens, and bespoke interior solutions, always with a focus on quality, efficiency, and maximising space. We combine traditional craftsmanship with modern solutions, ensuring every project is completed on time, on budget, and to the highest standards. With our experience and carefully selected team of skilled tradespeople, we take care of everything from structural work and plumbing to carpentry, plastering, and finishing touches. We are local, accountable, and hands-on, so you always know who is managing your project. Your home is your investment, and we treat it as our own. Whether it’s a small repair or a full-scale renovation, we deliver solutions that maximise space, enhance character, and provide lasting quality.
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Latest review:
Works consisted of hip to gable loft conversion under permitted development and a refurbishment of the first floor of a semi-detached house into a four bedroom/bathroom layout, including new windows, balconies, wiring and plumbing as well as sound proofing the walls. With 100m2 of works this was my first introduction to a major building project and I was worried by the horror stories I have heard about builders. From the outset Monika set my mind at rest, listening to what I wanted, making helpful suggestions, offering tips for instance on how to save on the scaffolding and always asking me when choices needed to be made. She took the trouble to ensure that I knew what was happening, with daily photos of progress without the need for me to climb scaffolding. I was working to a tight timescale and budget, which Monika understood, and even having accommodated a number of changes including some additions, the project came in on time and on budget. All of the workers on the site were very professional and the quality of the work and the attention to detail was exceptional. I have no hesitation in recommending Monika and her team - I went into this project apprehensive and not sure what to expect; thanks to Monika, I came out the other side delighted by and looking forward to working with her and her team again to renovate my ground floor.
MCT Developments Ltd
No reviews yet
Extension Builder in Harringay
We pride ourselves in providing a full range of services, executed to the highest standards, from meticulous restoration of listed buildings to the creation of contemporary spaces. Over the years we’ve had the privilege of adding some of the London’s most iconic buildings from Hampton Court Palace to The Savoy Hotel, from Fortnum & Mason to The Connaught Hotel and the Royal Suite at The Mandarin Oriental Hotel to our portfolio. We are able to deliver on all aspects of work from extensions and loft conversions to full refurbishments. When delivering projects with specifications from the more modest to high end and complex, we work with our clients to ensure the highest level of quality and satisfaction. Driven by our core values of excellence, safety, integrity and innovation we continue to deliver an outstanding service for our clients, often exceeding expectations and always within budget. Whether it’s a new construction project, renovation, or sustainable building endeavour, we bring expertise, innovation, and dedication to every phase of the construction process.
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Sergio
Rating: 5 out of 5
Extension Builder in Harringay
Hi there !We are an experienced and reliable multi trader team covering the following aspects:glazing,SFS & extensions,flat roofs,any type of cladding,carpentry-all aspects, drylining,exterior /interior insulation installation & rendering,drainage systems & gutters ,plumbing & electrician ( registered and insure -domestic and industrial )and and general DIY jobs. We can help also with interior design and bespoke furniture fabrication of any type (domestic,commercial,offices,interlocking
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Latest review:
Insulation- 14 Feb 2023
I placed an add in mybuilder.com to have my house fully insulated and received many replies including one from Sergiu. After meeting him I felt he was the best placed person to carry out the work as he was the most knowledgeable and seemed to know all about the various types of insulation and which one I needed for my home. He fully explained the procedure from start to finish was always on time and tidied up at the end of each day.His work is second to none and the price was very very competitive in fact much less then the big companies were asking.I am extremely happy with the job and the standard of finish. Sergiu is very police professional and trustworthy and I would have no hesitation in recommending him to anyone on here to carry out work in your home.
glenward builders ltd
No reviews yet
Extension Builder in Harringay
Glenward Builders started out has a single trader 1985 - and Up graded to a limited company in 1998. Where we were main contractors for local Authorities on their approved list of contractors, carrying out major maintenance works for Schools,public buildings and parks. We are a very bespoke family business with a very experienced team.Since 2006 we have been predominantly carrying out residential projects from minor refurbishment - extension - Loft conversion through to full New builds. •
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General Building Services
Rating: 5 out of 5
Extension Builder in Harringay
We are a team of professional tradesmen who provide quality refurbishment services in London .With over 28 years experience in our industry,we provide a comprehensive services. Your project is in safe hands. I am one of the owners of the factory kitchen furniture. Do you want to have a beautiful and very firmly floors, driveways, parking lots, terraces, balconies and other places -to bell.Performs industrial and decorative flooring company Bautech.
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Latest review:
Damp Proofing- 14 Apr 2018
Had several quotes and different opinions on how to treat my issue. Ted was by far the most knowledgeable and gave proper advice. The job was completed properly. Timekeeping and cleanliness brilliant. I have already hired him for future work and recommended to another member of my family. Very reasonable cost wise.
fairway develoments uk ltd
No reviews yet
Extension Builder in Harringay
i have been trading for over 40 years, we are a family run business we specialise in refurbishments ,bathrooms, kitchens, extensions and loft conversions
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Iron Handyman
No reviews yet
Extension Builder in Harringay
33 years of experience, before this experience, I both worked and studied in all construction works (water, electricity, tile, gas, paint, etc.). I have been skillfully doing carpentry, which is a father's profession, from childhood until this time. The works I will do will be the best proof.
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KA Contractors Ltd
No reviews yet
Extension Builder in Harringay
*Kacontractorsltd: Excellence in Building and Renovation Services* *Qualified Electricians, Gas Engineers and plumbers. **Professional Builders and Renovators:** We have established ourselves as leaders in the building and renovation sector. Our expertise encompasses a wide range of services, including high-quality renovations, bespoke bathroom and kitchen installations, sophisticated extensions, loft conversions, and robust roofing solutions.
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Lacon projects limited
No reviews yet
Extension Builder in Harringay
As Principle Contractors we take pride in ensuring that our projects are key to tailor your details and design when in planning stages. Our staff members produce consistent results at the end of each project that is completed by us. At Lacon Design & Build we operate on 80% repeat business specifically for loft conversions, extensions and cladding as our team specialises in providing these services
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A.I.M Property Improvements Ltd
Rating: 4.9 out of 5
Extension Builder in Harringay
We are a family ran building company with many years experience combined. Our team are professional and hard working, we aim to provide the best service at competitive rates to all our customers whether the job is big or small. FREE QUOTES with no obligation! What we do: • Kitchen fitting • Bathroom fitting • Refurbishments • Extensions • Loft conversions • Carpentry • Plumbing • Electrics • Painting & decorating • Plastering & rendering
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Latest review:
Restoration & Refurbishment- 25 Sep 2025
We were over the moon with our kitchen once Zihni and his team had finished. We had never used this firm before but we will definitely be using them again for future projects. Zihni is calm, knowledgeable, and went over and beyond in helping us not just complete our kitchen project, but in helping us move into a new home smoothly. We are also really appreciative of the rest of his team, as they were all so serious, professional and perfectionists. Zihni's communication was probably the single reason why the completion of our kitchen was such a success.
Building Services
No reviews yet
Extension Builder in Harringay
15 years expirience.Worked always carried out to a high standard with fiendly services
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Toni
No reviews yet
Extension Builder in Harringay
We are a London-based construction company delivering high-quality building solutions across the capital and beyond. Specialising in residential and commercial projects, we provide reliable, end-to-end services—from planning and groundwork to final completion. Our focus is simple: quality workmanship, clear communication, and projects delivered on time and within budget. While we are proudly based in London, we also undertake projects across the UK, bringing the same level of professionalism and attention to detail wherever we work. Whether you’re planning a new build, renovation, or extension, we work closely with you to turn your vision into reality.
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Open4way Ltd
No reviews yet
Extension Builder in Harringay
Open4way Ltd experienced in general construction,painting,decorating,gardening,block paving,slabs,fencing,cleaning paving with high water pressure,guttering.We have the ability to complete any job,large or small to a very high standard. We are happy to give you a free quote.
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Amazing constructions limited
Rating: 5 out of 5
Extension Builder in Harringay
we are specialised-Loft conversion, Extension, Brick work, Plumbing, Electric, Roofing, Bathroom, Tiling, kitchen, Flooring, Paint, and have experience of 15 years.
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Latest review:
Extensions- 10 May 2021
Very Professional and diligent service, even though was hard to get materials because the job was done at the peak of the pandemic, still they managed to sort things out. The job was so nicely done that all the tenant who viewed the house wanted to rent it. I have even given them another job would certainly recommend.
LSQ Construction Ltd
Rating: 5 out of 5
Extension Builder in Harringay
We have over a decade of experience in the construction industry. We specialize in full house refurbishments including Extensions, loft conversations and new built. We have carried out project all over London specifically in east London and Essex. At LSQ, we pride ourselves on being a trusted company in the construction industry, delivering exceptional craftsmanship and solutions tailored to meet the unique needs of our clients. With years of experience in construction industry, we are committed to turning visions into reality through meticulous planning, quality materials, and skilled execution. Our team of dedicated professionals works closely with clients to ensure every project is completed on time, within budget, and to the highest standards. When it comes to building dream homes, we approach every project with integrity, precision, and a passion for excellence. Rest assured we are the builders where quality matters. Let us help you bring your construction goals to life. At LSQ, your vision is our mission.
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Latest review:
Absolutely fantastic. Syed and his team was always on time. Very reliable and extremely helpful. Syed always took the time to recommend me the best.

Top rated Extension Builders

Our Extension Builders in Harringay, are rated 4 out of 5 based on 17 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Harringay?

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

Find extension builders in Harringay with MyBuilder

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

Step 2: Compare different extension builders in Harringay

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

Step 3: Hire Harringay extension builders with confidence

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

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

What to ask a Harringay extension builder before hiring?

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

An extension builder in Harringay 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 Harringay 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 Harringay?

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 Harringay 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 Harringay 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 Harringay

Can an extension builder in Harringay help with planning permission?

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

Many Harringay 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 Harringay help with materials and finishes?

Yes, most extension builders in Harringay 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.