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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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  • 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...

    70 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...

    199 reviews / 4.97 out of 5

    The Linx team's new construction and refurbishment initiatives have made my family and I very happy. Every aspect of the job was finished to a...

    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 all surrounding areas

    Art & Build Ltd is a Croydon-based construction company specialising equally in three core areas: loft conversions, house extensions and full...

    7 reviews / 5.0 out of 5

    Project was expertly managed from start to finish. Delighted with the results and had lots of constructive input from Art & Build along the way

    London
    W12 7BQ
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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 2504 reviews

  • Arch Mark Construction Ltd, Upminster

    5 out of 5.0

    "Arch Mark construction built an extension for us at the end of 2024/early 2025. The whole experience from start to..."

    Matthew Gordon on 6th November 2026

  • Arch Mark Construction Ltd, Upminster

    5 out of 5.0

    "We are delighted with the work mark and his team did for us. Started and completed on time, any changes or additions were..."

    Martin Greenfield on 5th November 2026

  • Westbury Builders, Gravesend

    5 out of 5.0

    "Brilliant from start to finish. The team turned up on time every day. Kept us informed at every stage. Work completed to..."

    Gary Lyel on 4th November 2026

  • Arch Mark Construction Ltd, Upminster

    5 out of 5.0

    "I’ve used the services of Mark and his team on many occasions from building a wall to building an out building of 100sqm...."

    Jeff Collyer on 3rd November 2026

  • LINX Design And Build, London

    5 out of 5.0

    "The Linx team's new construction and refurbishment initiatives have made my family and I very happy. Every aspect of the..."

    Andrew Murphy on 2nd November 2026

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