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  4. Extension Builders in Islington

Extension Builders in Islington

Browse trusted local Extension Builders in Islington on TrustATrader, all vetted, with photos of completed work, and reviews from previous customers.

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Local Extension Builders

We have found a selection of the best, most reliable Extension Builders in your area. You can click on a trader profile to find out more information, send email/SMS enquiry, or add them to your call back list.

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    TrustATrader Guarantee for extra peace of mind. TrustATrader Guarantee easily covers your next job via TrustATrader to provide extra peace of mind. Click this icon within the listing to register your TrustATrader Guarantee. Find out more

  • Extension Specialists in London. Covering London, North London, Hertfordshire

    In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the...

    9 reviews / 4.98 out of 5

    We recently used C Shambi Builders for a loft conversion and extension, having previously used them for other work, and once again we couldn’t be...

    London
    NW3 4DB

  • Extension Specialists in Highgate. Covering London and surrounding areas

    UCS offer a comprehensive range of services.Established since 1985, we will ensure all our work is carried out to the highest possible...

    166 reviews / 4.77 out of 5

    Richard came to view the proposed work, provided really useful advice that helped with my decision-making and made me confident in his experience...

    Highgate
    London
    N6 5HP

  • Extension Specialists in London. Covering Greater London

    In an unstable market house extensions are often the most viable option, helping you to get the most out of the space you have without the...

    69 reviews / 5.0 out of 5

    We've renovated before and know how difficult it can be to find reliable builders. Nova restored our faith. The team genuinely cared about doing...

    London
    EC2A 4NJ

  • Extension Specialists in Finchley. Covering London, Home Counties and all surrounding areas

    In an unstable market, house extensions are often the most viable option, allowing you to maximise the use of your existing space without...

    38 reviews / 4.91 out of 5

    Allan and his team are excellent. Very respectful, punctual and professional. Cannot be happier with the service they provided.

    Finchley
    London
    N3 2AG

  • Extension Specialists in London. Covering the whole of London and the surrounding areas

    Powerpillar Ltd is based in London and we have been providing high standard house and bungalow extensions for customers in London and the...

    91 reviews / 4.88 out of 5

    We are delighted with the office refurbishment completed by Powerpillar Ltd. Their team delivered a professional, high-quality service from start...

    London
    E10 7QP

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    TrustATrader Guarantee for extra peace of mind. TrustATrader Guarantee easily covers your next job via TrustATrader to provide extra peace of mind. Click this icon within the listing to register your TrustATrader Guarantee. Find out more

  • Extension Specialists in London. Covering SW1, SW6, SE13, SW19, KT1, TW1 and all surrounding areas

    AL-KO Construction Ltd is a London-based home extension specialist with more than 12 years' experience delivering high-quality house and bungalow...

    34 reviews / 4.98 out of 5

    Altin's plastering work is second to none! The walls are smooth and flawless, making the room look brand new. Their attention to detail and...

    London
    SE11 4AE

  • Extension Specialists in London. Covering North London, North West London and all surrounding areas.

    Chelebi Builders is a Build & Design construction company based in North London. Our expertise range from Loft Conversions, Extensions, House...

    31 reviews / 4.96 out of 5

    Chelebi carried out a side and rear extension on our Victorian semi detached. Cafer and his team pulled out all stops to ensure works were...

    London
    Greater London
    N12 0DR

  • Extension Specialists in London. Covering Chelsea, Kensington, Mayfair & Soho

    LINX Design And Build is a family-run business with intensive experience in the building and construction industry. We have been helping customers...

    197 reviews / 4.97 out of 5

    We’re extremely pleased with the garage conversion and the overall service from start to finish. The team was professional, reliable, and very...

    London
    SW3 5EX

  • Extension Specialists in London. Covering all surrounding areas within a twenty mile radius

    Welcome to Prime Construction Services LtdWe are builders based in London that have been successfully completing work in the area for many...

    17 reviews / 4.93 out of 5

    One of the few contractors out there who were honest, patient with our indecisiveness and flexible in their approach with us. Prime Construction...

    London
    N12 9LY

  • Extension Specialists in London. Covering London

    Bubble Level Ltd provides home extensions and extension planning for homeowners across London and the surrounding area. In an unstable market,...

    27 reviews / 4.96 out of 5

    Would recommend them and very customer service provided. Good quality workmanship and knowledgeable about the service they provide.

    London
    N18 1HP
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Other services relating to Extension Builders in Islington

Our average rating for Extension Builders

5.0 - 5.0 out of 5 from 2419 reviews

  • LINX Design And Build, London

    5 out of 5.0

    "We’re extremely pleased with the garage conversion and the overall service from start to finish. The team was..."

    Butler Porter on 12th September 2026

  • Nova Design & Build London Ltd, London

    5 out of 5.0

    "We've renovated before and know how difficult it can be to find reliable builders. Nova restored our faith. The team..."

    Laura Tol on 12th September 2026

  • Allround Building Services Limited, Slough

    5 out of 5.0

    "We did a conversion of our single garage into a utility space plus office space. The team were organised and..."

    Benita Ashby on 11th September 2026

  • C Shambi Builders Ltd, London

    5 out of 5.0

    "We recently used C Shambi Builders for a loft conversion and extension, having previously used them for other work, and..."

    Darren Furniss on 11th September 2026

  • Westbury Builders, Bexleyheath

    5 out of 5.0

    "For the past year, I have been dealing with a complex and long-running leak and water damage issue. After trying and..."

    Andrew Hercules on 10th September 2026

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