Extension builders in Islington

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.5 (17 reviews)

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Some of our top rated extension builders in Islington

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Beacham Architects
No reviews yet
Extension Builder in Islington
We help home owners extend and improve their homes to suit their needs and dreams. We are design-led and specialise in extensions, loft conversions and basements all around London with budgets of £50k-£400k. Good design improves lives and adds value, just ask our clients. Our extended team includes expert ARB registered architects, interior designers, structural engineers and party wall surveyors. Contact Mike for a tailored and customisable service quotation, the first consultation is free!
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Ndoci construction ltd
No reviews yet
Extension Builder in Islington
We are a dedicated construction and renovation company delivering high-quality work across residential and commercial projects. From small repairs to full-scale builds, we handle every stage with precision, reliability, and attention to detail. Our goal is simple: to bring your vision to life on time, on budget, and to the highest standard.
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Appexconstruct
No reviews yet
Extension Builder in Islington
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.
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HM construction
No reviews yet
Extension Builder in Islington
H.Muzaci Contractor is a well-established building company with over 25 years of experience in the construction and renovation industry. We specialise in home renovations, extensions, refurbishments, and general building work, delivering high-quality results from start to finish. We pride ourselves on excellent workmanship, reliability, and attention to detail, no matter the size of the job. From initial planning through to completion, we work closely with our clients to ensure projects are delivered on time, within budget, and to a high standard. Customer satisfaction is at the heart of everything we do. We are tidy, respectful, and committed to clear communication throughout the project. Much of our work comes from repeat customers and recommendations, which reflects the quality and trust we’ve built over the years. Clients from all over City of London with references (Mayfair, Chelsea, Portsman Square). If you’re looking for an experienced, honest, and professional builder, H&M Construction would be happy to help.
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Step-Up Contractors
Rating: 5 out of 5
Extension Builder in Islington
Step Up Contractors Ltd with over 20 years of construction experience. We are a family owned business and have been responsible for successfully completing a variety of construction projects covering a wide spectrum of expertee uses. Completed on time, to satisfaction, on budget. We take care of all your construction needs, from design, to handing over keys to your new home. No job too small, from a leaking tap, bathroom install to a double story extension. Free no obligation quotes!
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Latest review:
Bathroom Fitting- 14 Aug 2021
I would definitely recommend Step-Up Contractors - they have done a really fantastic and great quality job of refurbishing our bathroom and ensuite shower room. They were very professional, friendly and communicated really well with us throughout the whole process. They tidied up every evening before they left and were very considerate. They did such a good job that we have asked them to come back soon to complete kitchen flooring work for us!
Bricklayer
Rating: 5 out of 5
Extension Builder in Islington
Small bricklayers gang ready for work : Face brickwork,Block work,Garden wall's any design you like. Pointing weather struck,flash. Old stock brickwork,New build brick work, Extensions.
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Latest review:
Extensions- 1 May 2024
Vaidas and team were great. Got here early and worked solid until late. Built a 5x4m extension and done a great job. Looks good and has been approved by building control. Highly recommend.
Deal Installations and Maintenance Ltd
Rating: 4.9 out of 5
Extension Builder in Islington
We might deliver building services but we are actually into people business. Our company mission is to provide top quality building services to satisfy our customers needs. We are making ourselves available so everyone can take advantage of our top rated skills and customer satisfaction . You deserve the best and we are here to help. Safety first, then customer first. Experience will take care of the rest.
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Latest review:
Restoration & Refurbishment- 14 Jun 2020
Vasile Pavel and his team were brilliant so helpful efficient with great advice of what would look good for a best price. He did a house clearance for me a new bathroom and new kitchen as well S decorating and some electrical work. I highly recommend him.
Castle view construction Surrey Ltd
No reviews yet
Extension Builder in Islington
Castle view construction Surrey Ltd is a building and refurbishment company delivering high quality construction services across residential and commercial projects. We specialise in full property renovations extensions structural works fit outs and maintenance
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Ml contractors
Rating: 1 out of 5
Extension Builder in Islington
Im builder at over 30years I bathrum kithen plumbing electrical extension carpentry hityng brick work flooring decoration
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Latest review:
Tiling- 15 May 2024
Hired this builder to complete my work and after confirming with him the date to meet to purchase materials for the w9rk he fell of the face of the earth. No communication to this day. Very unprofessional. Hire at your own risk
Ziaka Construction
No reviews yet
Extension Builder in Islington
With many happy and returning customers over the last 6 years, you can be sure of being well looked after. Our aim is to provide a stress free project, delivered in a manner that I am confident will exceed your expectations. I work with a team of trusted colleagues. Our customers are accustomed the outstanding quality of projects we complete, by sourcing quality materials with experienced installers we create truly bespoke masterpieces lasting our customers many years.
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Pavlito Construction Ltd
Rating: 5 out of 5
Extension Builder in Islington
Pavlito Construction Ltd is a family run business with over 15 years of international experience in construction and general building (Germany, Italy, Poland and UK). We have worked extremely hard in order to establish a well respected name and reputation.
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Latest review:
Restoration & Refurbishment- 15 Feb 2016
Pawel and his team modernised our two bedroom house from top to bottom. They installed central heating in every room, they removed our old warm air heating, made an open plan for the kitchen and living room area, installed new bathroom and kitchen units and did the tiling too, they updated our electrics and sockets and also plastered and painted the walls and fitted our wooden flooring for downstairs. The job was completed within 12 weeks. We were very happy with the modernisation, our home looks completely different and has a new modern fresh feel. We will definately be using Pawel and his team for future jobs. Thanks again Khalima
Codenra ltd
No reviews yet
Extension Builder in Islington
I carry out general building work such as loft conversion, home extenstion , partition , plastering , laminate and tail.
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Joshan builders ltd.
No reviews yet
Extension Builder in Islington
Hi, I’m jas from joshan builders. With over 15 years in the trade, I specialise in high-quality loft conversions / extensions/ new builds. I take pride in clear communication, reliable timelines, and attention to detail on every project. 📍 Where I work: tottenham, I cover surrounding areas up to 20 miles 🔧 Special skills: Structural work, bespoke carpentry, accurate quoting, and managing full renovations. ✅ Why hire me: I’m committed to getting the job done right — first time, on time. Let’s talk about your project — I’d love to help bring it to life!
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KNIGHTBRIDGE-ONE LTD
No reviews yet
Extension Builder in Islington
Our mission is clear – to transform spaces into timeless works of art that seamlessly blend form and function. KNIGHTBRIDGE-ONE is driven by a passion for creating environments that not only meet our clients’ aspirations, but exceed them. Our diverse portfolio spans from groundbreaking new build works to the meticulous integration of landscape architecture, ensuring each project is a testament to our unwavering pursuit of perfection. Making innovation and expertise in design and build for conversions, extension and alteration works.
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jc_electrical
Rating: 5 out of 5
Extension Builder in Islington
We are a construction company with years of experience in all aspects ranging from groundwork, carpentry, extensions and many more. We pride ourselves on delivering a high quality finish.
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Latest review:
Landscaping- 20 May 2026
Very pleased. Responsive and did a good job
AMB Construction Limited
No reviews yet
Extension Builder in Islington
AMB Construction is general building company specializing in interior and exterior refurbishment,new extension,loft conversion,renovation,kitchen and bathroom fitting,decorating etc
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4.5

Top rated Extension Builders

Our Extension Builders in Islington, are rated 4.5 out of 5 based on 17 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 Islington?

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

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

What are the hourly rates of extension builders in Islington?

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

Find extension builders in Islington with MyBuilder

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

Step 2: Compare different extension builders in Islington

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

Step 3: Hire Islington extension builders with confidence

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

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

What to ask a Islington extension builder before hiring?

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

An extension builder in Islington 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 Islington 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 Islington?

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 Islington 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 Islington 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 Islington

Can an extension builder in Islington help with planning permission?

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

Many Islington 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 Islington help with materials and finishes?

Yes, most extension builders in Islington 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.