Extension Builders in Pentonville

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (18 reviews)

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Some of our top rated extension builders in Pentonville

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Stanrock Building Services
No reviews yet
Extension Builder in Pentonville
Stanrock Building Services is a general building contractor that specialises in residential refurbishment and extension works and commercial fit outs. We can also assist with your design and interiors requirements along with planning applications.
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Elite Contracting Group LTD
No reviews yet
Extension Builder in Pentonville
Transforming Spaces with Exceptional Decoration Works. With over 35 years of experience, Elite Contracting Group ensures the delivery of premium-quality finishes, with relentless attention to detail and reliable adherence to timelines. From designing possibilities to building realities, we work towards elevating interiors and exteriors and transforming your project into an exceptional work of art. Ultimately, we are devoted to the realization of your vision, as our mission is your satisfaction.
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swift conversions ltd
Rating: 5 out of 5
Extension Builder in Pentonville
In Swift Conversions we have a mission, which is to provide the residents of Greater London with no hassle building services where all work exceeds expectations, meets deadlines and offers excellent value for money and we work very closely with our client to ensure complete customer satisfaction. We have many satisfied and returning customers because we provide the best and most comprehensive building services in and around Greater London. We pride ourselves on offering turn key projects including all permissions, certificates, planning, structure drawings and calculations. If you are looking for experienced and friendly building company you can trust then look no further than SWIFT CONVERSIONS. Whether its a query or a quote, shortlist us here and we will be in touch very shortly as soon as we have your contact details.
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Latest review:
We have worked with Alex and his team at Swift Conversions Ltd twice now—first for a house extension and then for a loft conversion and general refurbishment —and we wouldn’t hesitate to choose them again for our next project. From the moment we received the quote to the final completion, Alex was incredibly communicative, reliable, and always had a can-do attitude. Despite the challenges of fluctuating prices in the market, he delivered the project within budget and stayed true to his word. His professionalism and trustworthiness are second to none. If you’re looking for a builder you can rely on 100%, Alex is the one to go to. Highly recommended!
Plumb4All
Rating: 5 out of 5
Extension Builder in Pentonville
With over 20 years’ experience in the plumbing and building industry, this has enabled our team at **Plumb4All** to become a well-known and trusted company. We offer a 24/7 call out service and long term support for existing clients as a single point of contact for any future queries and issues. Our many happy and repeat customers find us through word of mouth and being fully qualified gives you the peace of mind that quality of service and very high standards are at the core of our values.
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Latest review:
Bathroom Fitting- 7 Mar 2021
Very professional and very thorough Solved the problem efficiently Would definitely recommend.
Omniscient Construction Ltd
Rating: 5 out of 5
Extension Builder in Pentonville
We have 20 years experience in construction,from extensions,loft conversions,property maintenance,kitchens,bathrooms,basement conversions,through to new builds. We work closely with our clients to achieve their goals. We have a trusted workforce.
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Latest review:
Extensions- 6 Apr 2018
Excellent in all departments
One Take Solutions Ltd
Rating: 5 out of 5
Extension Builder in Pentonville
Experienced plumber and handyman. Happy to provide fixed price, guaranteed work for tenants and homeowners alike.
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Latest review:
Plumbing- 4 Aug 2018
Able to fit an outside tap for us quickly and finished to a high standard. Very professional and passionate about the job. Also took a look at another plumbing issue we had and gave us an honest reply on what our best options were.
London Premium Builders
Rating: 4.3 out of 5
Extension Builder in Pentonville
London Premium Builders Ltd Covering London & Essex With 15+ years of experience, our expert team delivers top-quality work across all types of building and renovation projects. ✨ Our Services Include: Kitchens • Bathrooms • Roofing • Flooring • Painting • Extensions • Loft Conversions • Brickwork • Fencing • Driveways • Damp Proofing • Plastering • Tiling • And More! ✅ Free Estimates ✅ All Our Work Is Guaranteed 📍 Based in London & Essex 📞 Contact us today for your free quote!
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Latest review:
Restoration & Refurbishment- 5 Jun 2026
This builder is not honest; he didn't do the work to live up to his verbal commitment to quality. He refused to include the electrical work he had done on the invoice because he did not want to issue an electrical safety certificate. He is not a professional, and we argued 2-3 times about not doing the quality work and left work, giving unethical reasons. His work laying garden slabs was of poor quality; the slabs were moving when walked on. I asked him to do it again, which he said he did, but still he left the slabs moving while walking. I am thinking of legal action against him. I will not recommend him to anyone. PLEASE AVOID HIM GIVING ANY JOB IN YOUR BEST INTEREST.
Zeenish construction limited
Rating: 5 out of 5
Extension Builder in Pentonville
Welcome to Zeenish Construction Limited , With over 30 years experience in the construction industry. No job too small electric plumbing and general building works undertaken and specialise in handyman services
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Latest review:
Plumbing- 17 Aug 2013
Excellent job, very good value for money and very quick and efficient fitter. I am very pleased with the work and highly recommend this tradesman.
ABG Builders Ltd
No reviews yet
Extension Builder in Pentonville
ABG Builders we do all sorts of building projects and have been running since 2006 we specialize in extensions from foundation to finish we make sure our costumer achieves their dream home. Free quotations
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Designs and Developments
Rating: 5 out of 5
Extension Builder in Pentonville
At Designs and Developments we have a wide variety of services ranging from bathrooms, kitchens, flooring, decorating loft conversions and extensions.
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Latest review:
Kitchen Fitting- 31 Jul 2019
To say Nick is just a kitchen fitter isn’t doing his work justice, he’s a fantastic project manager and craftsmen as well. When we first met Nick he took 2 hours of his time running through all the options which was when we realised we were actually quite clueless! Although we hadn’t hired him at this point his advice was invaluable. We assumed this would mean Nick’s professionalism would mean he would be very expensive, this was not the case and he was actually a little cheaper than the other parties who quoted. Once Nick started it became apparent that he and his assistant Chow to great pride in their work and worked hard to get the job finished as quickly as possible to the highest standard. They left the site spotless at the end of each day. The result is a fantastic kitchen and flooring which we are extremely happy with. We are already thinking about the next renovation piece in our home and would love to use Nick again. Thanks Nick! Niall & Hannah
Rayway limited
Rating: 5 out of 5
Extension Builder in Pentonville
Over 15 years of experience in building and construction industry
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Latest review:
Restoration & Refurbishment- 18 Feb 2021
Ray was an absolute professional. He fitted a new downstairs toilet which required a new soil pipe and associated groundwork as well as new stud walling to partition the space. He did most of the work himself, but brought in others for the pieces where he wanted an expert. He was flexible to small changes and was happy to take on additional work when unforeseen issues were discovered. The areas he had worked in were quickly cleaned before he left each day. Overall the work was completed to a good quality and at a reasonable price.
Alex Pana
Rating: 5 out of 5
Extension Builder in Pentonville
My name is Alex, I work in construction field for more then 13 years. My experience start with my first job, I have experience from big construction sites, indoors jobs, building houses, small jobs as painting, plastering, changind windows etc. I take on lots of different type's of job. Bricklaying, paving, garden jobs, rendering, decking, concrete slabs, plastering, plasterboard, painting decorating, tiles, floors, hang/ fix doors, wallpaper, etc. It varies from small to big jobs.
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Latest review:
Handyman- 24 Jan 2019
Alex did a brilliant job at a very good price. Nice, friendly guy who knows his stuff, I can definitely recommend him.
Alfa style LTD
Rating: 5 out of 5
Extension Builder in Pentonville
Specialists In Loft Construction,house extension and renovation . We can convert your loft to maximise your living space,by converting it to create a new bedroom,bathroom,office or playroom. Alfa style ltd the primier home conversions company you can trust for reliable,honest and quality workmanship. Here at Alfa style ltd we offer high quality loft conversion in South West London and surrounding areas.
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Latest review:
We had the pleasure of working with Alfa Style Limited on our loft conversion and we can recommend them highly and without reservation. Their work is incredible, attention to detail outstanding – our build was done with care and precision. They turned up on time every day, worked incredibly hard and quickly. In addition, they were extremely clean and tidy in the workplace – they never left the worksite in disarray. This is the first time we have done such a big project – Ruslan, Slava and their team were amazing. They were brilliant at explaining what was going to happen, day by day, week by week and translated the more technical information! No question or query was too much. The service after the build had finished has also been great, calls to check everything is OK and any queries we have, they are only a phone call away. We have had so many compliments from family and friends who have seen the finished build … it has made a huge difference to our house, we could not be happier.
Mehmetali
Rating: 4 out of 5
Extension Builder in Pentonville
Hello all, I am Mehmet. I am 30 years old and living in Southgate. I have a car and I can travel anywhere to service. I am a reliable handy person to all your home maintenance needs. I offer services at affordable prices. Please don’t hesitate to contact me. Thank you for your support.
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Latest review:
Handyman- 28 Apr 2024
I am happy with job.
Fire Safety Works Limited
Rating: 5 out of 5
Extension Builder in Pentonville
Lofts ,extension, Full refurbishment plastering Painting and decorating wallpaper and much more on commercial and domestic properties 12 years of experience
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Latest review:
Painting & Decorating- 4 Jul 2017
Andi and his team did a fantastic job including removal of wallpapers, skimming and repainting walls and ceilings in no time.... the team worked wonders day and night handing back the property ahead of our move in day!! Andi is easy to talk to, extremely hardworking, keeps his promise and does it all with a smile! I wish I was like that at work when my boss gives me job :) Very pleased we hired Andi
Peter renovation
Rating: 3.7 out of 5
Extension Builder in Pentonville
When you need a reliable builder for refurbish or extend your property our skilled team of experienced craftsmanship are ready to help you. We can provide a tailor-made service to suit your budget and requirements!
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Latest review:
Conversions - General- 6 Oct 2025
Peter and Dan did an excellent job from start to finish. They were professional, reliable, and easy to work with. The quality of their workmanship is top-notch, and they finished everything on time and to a high standard. I’m really pleased with the results and would highly recommend them.

4.1

Top rated Extension Builders

Our Extension Builders in Pentonville, are rated 4.1 out of 5 based on 18 reviews from customers like you.

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

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

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

What are the hourly rates of extension builders in Pentonville?

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

Find extension builders in Pentonville with MyBuilder

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

Step 2: Compare different extension builders in Pentonville

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

Step 3: Hire Pentonville extension builders with confidence

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

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

What to ask a Pentonville extension builder before hiring?

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

An extension builder in Pentonville 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 Pentonville 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 Pentonville?

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 Pentonville 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 Pentonville 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 Pentonville

Can an extension builder in Pentonville help with planning permission?

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

Many Pentonville 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 Pentonville help with materials and finishes?

Yes, most extension builders in Pentonville 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.