Extension Builders in Pentonville

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.1 (19 reviews)

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Some of our top rated extension builders in Pentonville

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Kegel LTD
Rating: 5 out of 5
Extension Builder in Pentonville
Hello 🧸we are the Kegel team of 4+ guys easy going and like what we are doing - Block , brick work , foundations , drain works , roofing . New house , extensions , garden walls, restorations old houses , re pointing , GRC clading , GRC bands , stone works , re pointing More them 15 years on large constructions. We working quick , without complain but if need to do a push We can get more lads as much as need it to finish on time. We got Electrican , Plumbers , carpentry available as well.
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Latest review:
Bricklaying- 19 Nov 2019
Alex is a polite professional who knows his job. He did a good job for me. I can recommend him.
Electroplumech MEP Services Ltd
Rating: 5 out of 5
Extension Builder in Pentonville
Service, repair and installation: Mechanical Electrical Plumbing HVAC (Heating, Ventilation and Air conditioning) Pumps
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Latest review:
Plumbing- 22 Dec 2025
Very good Came on time, very nice and polite, did the job (only time will tell if it is fixed unfortunately), hassle free service
BDS TM Limited
Rating: 5 out of 5
Extension Builder in Pentonville
FULL REFURBISHMENT ,HOUSE EXTENSION AND LOFT CONVERSION SPECIALIST,PAINTING, ELECTRICAL&PLUMBING
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Latest review:
Electrical- 18 Apr 2020
Ben fixed my lights and electrics in garden. He took his time and was punctual. Hes very helpful and resonable. i was very happy with his work, i would recomend him to anyone what a nice man.
Dariusz Zaczkowski
No reviews yet
Extension Builder in Pentonville
Extension Loft conversion Bricklaying Roofing Demolition Porches and Conservatories Kitchen fittings BENCHMARX, HOWDENS and much more Floors, doors, windows, wardrobes, partition walls, shelving, fittings Decking Any aspects of plumbing Bathroom refurbishment Any aspect of electrical work Also interior and exterior decorating, plastering, painting All our work is insured For free estimates
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My Bespoke Bathroom Ltd
No reviews yet
Extension Builder in Pentonville
Ludvik Krnc mastered his skills as a tiler and marble fitter in the South of France, while he honed his expertise in mosaic in Ravenna, Italy. Ludvik has been specialising in the design and creation of superior bespoke bathrooms for over 20 years, his work taking him to Africa, St Tropez, Monte Carlo and all over Europe. The Company employs professional and specialised trades in order to create superior bespoke bathrooms for its clients.
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House Renovation Services London LTD
No reviews yet
Extension Builder in Pentonville
I am a London based cont actor with over 10 years experience in property renovation and construction. I specialise in delivering high quality building work, from full refurbishments to extensions and new builds. I pride myself on reliable service, clear communication, and excellent workmanship.
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Km Building Specialists Ltd
Rating: 3 out of 5
Extension Builder in Pentonville
KM Building Specialists is dynamically developing company created by people with passion. Our mission is professional advice, meeting expectations and, as a result, obtaining satisfaction of all our clients. We work closely with various construction specialists (electricians, gas-safety experts, architects, garden designers) to enable us to deliver the top class service and to ensure that the safety building regulations and codes of practice are followed.
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Latest review:
A single storey extension. Bedroom chimney place knocked down. Patio to the rear. Marek was very hardworking, professional and tidy. He was at my home every day and alway very early and always worked until late to get the job done
Wayne
No reviews yet
Extension Builder in Pentonville
I have been a bricklayer for 10years. I can do Extensions, pointing and more
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Kasa
Rating: 5 out of 5
Extension Builder in Pentonville
Kasa Building services , it’s proud to offer a wide range of services from new build to loft&extensions , refurbishments , plumbing and electric,carpentry and loads more … With as quality matters
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Latest review:
Plumbing- 3 Apr 2023
Kasa was absolutely fantastic, nothing was too much hassle as we had to make changes during the job. We have now found a plumber, we can use on all future projects. Big thank you Kasa from myself and Aiste.
FSB Company (UK) LTD
Rating: 5 out of 5
Extension Builder in Pentonville
FSB is a well-organized contracting company with a team experienced in large-scale development projects with leading UK construction companies. Based primarily in London, we offer a variety of self delivered services, including complete extensions, and conversions, small works, structural alterations, steel work installations, ground work (foundations, drainage, concrete sub and superstructures), hard landscaping and paving and soft landscaping. We manage our sites carefully and have a digital site management tool kit. Our fully managed service connects skilled tradespeople with experienced construction management directly ensuring attention to detail that begins with our Contractors Proposals and continues through to practical completion and aftercare.
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Latest review:
Extensions- 17 Nov 2025
Freddie, Kaz and Dan are a great team. I felt they were friendly and professional throughout. Any slight niggles were discussed and solutions found, quickly and professionally. They were respectful and went out of their way to get on with all the neighbours. Over all I would say they are a team of very nice people, who care about what they do and take pride in achieving the result their clients are after.
LBS Property Maintenance Ltd
Rating: 5 out of 5
Extension Builder in Pentonville
When it comes to fulfilling a full-range of home-renovation needs, we are the team-of-choice for central and southeast London property-owners. Entrusting your building-needs to us means your work is done now, done right, and done at an affordable cost. Guaranteed.
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Latest review:
Extensions- 7 Jan 2019
I would definitely recommend LBS Property Services and would definitely use them again. LBS have a highly professional team and are very well organised and managed on site. Raymond has a very collaborative, proactive and honest approach with excellent communication skills and was a pleasure to work with throughout all stages of the project. All works were completed to high standard within the agreed construction programme.
MN CONTRACTORS LTD
No reviews yet
Extension Builder in Pentonville
At MN Contractors, we provide expert building and home improvement services throughout Kensington and Chelsea and within a 10 miles radius. Our skilled team handles all aspects of property work, including extensions, loft conversions, carpentry, plasterboard and skimming, painting and decorating,wall paper removing and installation,bathroom fitting, plumbing, underfloor heating, tiling, electrical work and garden brickwork and fencing. We take pride in delivering high-quality workmanship, whether it’s a small repair, a full renovation, or a complete house extension. With a focus on reliability, clear communication, and fair pricing, we aim to make every project hassle-free for our customers. No job is too big or too small – we work on both domestic and commercial properties. We also offer free estimates and are fully insured, giving you complete peace of mind.
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Bendev Construction 2018 Ltd
No reviews yet
Extension Builder in Pentonville
Family business with experience in new builds, extensions and refurbishments
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Construction Worx Ltd
Rating: 5 out of 5
Extension Builder in Pentonville
We come with many years experience and are highly recommended for loft conversions and extensions. Viewings on previous works can be arranged. We look forward to speaking to you and creating your dream home.
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Latest review:
Tom fit a new bathroom for us. He was very professional and did a great job. Very polite and clean builder (didn’t leave any mess!)
A lama construction ltd
Rating: 5 out of 5
Extension Builder in Pentonville
Drylining and plastering , making good , building wall , mf ceiling , plasterboards , rendering, painting.
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Latest review:
Carpentry- 9 Oct 2022
Excellent work; came exactly on time and went above and beyond. Job a little more involved than I’d realised but no complaints from Alfred he purely got on with the task at hand and I was incredibly happy with the work and would highly recommend.
Spoonerbrothers London
Rating: 5 out of 5
Extension Builder in Pentonville
Spooner Brothers London has 20 years of building experience We have a good reputation for customer service, many of our leads are recommendation, with competitive prices & a high standard of workmanship. We specialise in orangeries, conservatories, porches, Skypods, windows, doors & bi-folds ! We are Certass fenestration registered, so all work comes with a building compliant certificate and an insurance backed guarantee See our brochures on the Spooner brothers london website
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Latest review:
Windows & Doors (uPVC & Metal)- 29 Jan 2024
John did a fantastic job of replacing a large sash window in our kitchen. He was easy to work with, and was very clean and tidy with the job. On top of that the price was very fair, particularly for the calibre of work completed. Would recommend!!

4.1

Top rated Extension Builders

Our Extension Builders in Pentonville, are rated 4.1 out of 5 based on 19 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.