Extension builders in Islington

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.5 (16 reviews)

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

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 Islington

3707 Results

Sort by:

Blueprint Builder UK
Rating: 4.4 out of 5
Extension Builder in Islington
I’m a local builder with over 25 years of experience, specialising in high-quality brickwork and home extensions. From start to finish, I take pride in delivering reliable, professional service and strong attention to detail. Whether it’s a full extension, garden wall, or any kind of brickwork, every project is completed to the highest standard. Customer satisfaction and honest workmanship are at the heart of what I do.
Get in touch
Latest review:
Conversions - General- 3 Apr 2026
I originally left Stuart a five star review because the workmanship and communication were excellent, and I booked him to return to complete the internal works on our extension. After paying a deposit, the work was due to start on 27 June, but Stuart never turned up and stopped communicating. His partner later asked if I could delay the work for a few months because he couldn't contact me. When I explained I couldn't wait and politely requested my deposit back, I was blocked. I have now been left with no option but to take him to the Small Claims Court to recover my money. It's a real shame because the original work was of a high standard, but I cannot recommend someone who takes a deposit, fails to return, and then ignores all communication.
G Iancu Construction
Rating: 5 out of 5
Extension Builder in Islington
At G Iancu Construction Ltd there is no work to small or to big, we pride ourselves in helping and meeting our customers requests with always best results .
Get in touch
Latest review:
Kitchen Fitting- 4 Feb 2025
Thank you for doing a fantastic job fitting our new kitchen. Georgian worked quickly and efficiently and gave great recommendations on how to stay within our budget. Thanks again for a great job!
CIRCLELETTINGs london limited
No reviews yet
Extension Builder in Islington
an experienced builder with good knowledge of building, plastering, tiling job
Get in touch
Griffithstown Group
No reviews yet
Extension Builder in Islington
Time served builder who takes on general building works
Get in touch
Benjis Brickwork
No reviews yet
Extension Builder in Islington
ASLLAN Brickwork About Me ASLLAN Brickwork is a self-employed bricklayer providing reliable and professional brickwork and blockwork services for residential and commercial projects. I take pride in delivering clean, accurate, and long-lasting work while maintaining good communication and professionalism from start to finish. With experience in new builds, extensions, garden walls, structural brickwork, and repairs, I focus on completing every project to a high standard. Whether it’s a small domestic job or larger construction work, customer satisfaction and attention to detail are always my priority. Our Services Brickwork Blockwork New Builds House Extensions Garden Walls Repointing Structural Openings Footings & Foundations Repairs & Restoration Retaining Walls Decorative Brickwork Commercial & Residential Projects Why Choose Me? High-quality workmanship Reliable and punctual service Competitive pricing Clean and tidy work ethic Honest communication Professional and hardworking approach Attention to detail on every project My Approach I understand that every project is important, and I work closely with customers to make sure the job is completed exactly as expected
Get in touch
H&M Construction
Rating: 5 out of 5
Extension Builder in Islington
We do carpentry and roofing works. We present our work professionally. We strive to please the customer. We have experience over the years. Our prices compete with everyone. Our headquarters is in London
Get in touch
Latest review:
Carpentry- 27 Mar 2022
We were very happy with Hesham’s work on a tricky job mending our Victorian window shutters.
A&B London Construction Services LTD
Rating: 5 out of 5
Extension Builder in Islington
With experience and knowledge of the industry of more than 10 years duration, we have developed a reputation for providing both a high quality and friendly service. When you need help with any type of building work, Domestic or Commercial, please contact us anytime we will be happy to help.
Get in touch
Latest review:
Restoration & Refurbishment- 29 Mar 2018
A pleasure to deal with . Agim and his team worked hard to a very good standard.They often worked later than i would expect so that they were ready to move onto the next stage of the job the following day. Agim was very knowledgeable of all building regulations and was ready to offer me solutions when they were needed. All his team were courteous , polite and also knowledgeable. This was the first time I have used A&B but I would have no hesitation of using them again and recommending them to others.
B.CANI Limited
Rating: 5 out of 5
Extension Builder in Islington
Reliable, fully insured construction company delivering high-quality workmanship across residential and commercial projects. We cover all aspects of construction including extensions, renovations, loft conversions, kitchens, bathrooms, roofing, landscaping and full refurbishments. From design to completion, we manage every stage with clear communication, fair pricing and attention to detail. Customer satisfaction, safety and deadlines are our priority.
Get in touch
Latest review:
Extensions- 11 Jan 2018
This was our first project, and we were exceptionally fortunate to find Bujar. We're actually getting tired of hearing our family and friends tell us how lucky we are and how amazing he sounds. One of the most honest, trustworthy, and genuine people I've ever met. If I had a problem, he'd be one of the first people I'd call! In fact I did last week and he came to the rescue :) His team were all friendly, polite, conscientious and very tidy. They worked around us as much as they could, always making sure we had access to what we needed which sometimes meant it took them longer to work. Bujar is a perfectionist and is so proud of what he does, he made sure everything was done to a high standard - the estate agent who came round after we were done was impressed! His prices are very fair (better value than other quotes we got and much less time). We couldn't believe it was done in the 3 months he said it would take, and we managed to fit in a few extra bits and pieces after that. He was so helpful throughout, took all project management on and didn't bother us unless an important decision needed to be made. He drove us around all over the place to sort kitchens, bathrooms, etc. and gave us really helpful advice throughout the process. Highly recommend him and his team. I can't imagine ever wanting to look for another builder unless I had to - something that is quite common amongst Bujar's clients. We are extremely pleased with everything about our new house.
Fk skyline LTD
No reviews yet
Extension Builder in Islington
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.
Get in touch
EBV construction
Rating: 5 out of 5
Extension Builder in Islington
All building construction loft conversion Extension Refurbish Carpenter Plastering rendering Dry lining Garden walls
Get in touch
Latest review:
Plastering- 22 Jul 2023
Mr Meta and his skilled team completed the plastering job as promised with high standard,good, honest and profesional. Will be hireing on other jobs.Many thank👊👍
EHJ Developments LTD
Rating: 4.8 out of 5
Extension Builder in Islington
Our construction company offers comprehensive services encompassing plumbing, electrical work, carpentry, full house refurbishment, and loft and house extensions. With expertise in diverse trades, we deliver high-quality craftsmanship and personalized solutions to meet every client's needs. From minor repairs to large-scale renovations, we handle projects with precision and efficiency, ensuring superior results and client satisfaction. Our skilled team is dedicated to excellence, using innovative techniques and premium materials to achieve durable and aesthetically pleasing outcomes. Whether it's upgrading a kitchen, adding extra space with a loft extension, or revamping an entire property, we pride ourselves on delivering exceptional construction services that enhance the functionality and value of homes.
Get in touch
Latest review:
Carpentry- 15 Jul 2026
Happy to recommend EHJ Dev. Ltd. Ash did a nice job (carpentry) was prompt; good communications and we would definitely ask him again when the need arises.
Ridi Building Services
Rating: 5 out of 5
Extension Builder in Islington
Hi. My name is Ridvan and I have been working on construction industry for more than 16years. All these years I worked hard to get the experience how to start and finish the job in high standards. 7 years ago I started working for myself. I am expert on Loft Conversations, extension Restoration & Refurbishment, Pitching Roofing and Carpentry (cupboards, doors, wooden floor and all other things that are wood working). My motto in my work ethic is, treat others as you would like to be treated.
Get in touch
Latest review:
Carpentry- 18 Sep 2021
Out of two chosen workmen Ridvan was the one who followed up on our connection,then visited,we agreed price and start date. Turned up as agreed. His manner and work ethics are outstanding, going that extra time to finish the job to a high standard and fine detail. Could not wish for a better outcome, from an also pleasant man. Thank you Ridvan, will be using you again.
Artizan landscapers ltd
Rating: 4.9 out of 5
Extension Builder in Islington
I have been doing garderning for over 20 years i have 8 certificates in gardening i have done domestic gardens and comerecial gardens
Get in touch
Latest review:
Garden Maintenance- 2 May 2026
A++
D&B Tatar Limited
Rating: 4.9 out of 5
Extension Builder in Islington
I am a highly experienced and confident individual with many years of construction experience , I have started working in this career from being a groundworker to working private jobs I am open to any jobs , as I have covered and worked in many different sides of construction industry ‘D&B Tatar Limited ‘ We lay foundation structures that improve the aesthetic of a building by laying driveways, footpaths and kerbs Installation of drainage systems Artificial turf installation Garden decoration Carrying out de-vegetation Outdoor steps We carry everything by always paying attention to details , comprehensive planning and execution which leads to high quality finishes
Get in touch
Latest review:
Guttering- 19 Dec 2024
Great job fixing the downpipe.
Balham construction Ltd
Rating: 5 out of 5
Extension Builder in Islington
Balham construction are a London based refurbishment and construction company that offer a wide range of services from full Property refurbishment to extensions and loft conversions and everything in between
Get in touch
Latest review:
Tom and the team completed a full renovation of my flat. This included refurbishment of my kitchen, bathroom and general redecoration. The team were extremely hardworking and punctual and no job was too difficult for them. I would highly recommend their services.
Knidos Enterprises Limited
No reviews yet
Extension Builder in Islington
With over 25 years of experience in the construction and home renovation industry, we have successfully completed a wide range of projects, from full-scale home remodels to smaller custom renovations. Based in London, we serve clients locally and are also available to travel to within M25 and surrounding areas, ensuring our services are accessible to a broader community. Our expertise spans across skills such as carpentry, decorations and detailed interior design. We take pride in our commitment to quality craftsmanship, attention to detail, and excellent customer service, making sure every project is completed on time and within budget. When you hire us, you’re choosing a team that values integrity, hard work, and customer satisfaction above all, delivering results that enhance your living space and add lasting value to your home. We are more than happy to work with you and serve for your needs. Please do not hesitate to get in touch with us for any kind of questions and find out more about our +50 completed projects in London. Cheers!
Get in touch

4.5

Top rated Extension Builders

Our Extension Builders in Islington, are rated 4.5 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 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.