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Extension Specialists in Harrow

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

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Local Extension Specialists

We have found a selection of the best, most reliable Extension Specialists 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 Herts, Middx, and all areas of North and North West London.

    RAS Construction & Design Ltd is a well established company specialising in all aspects of extensions, loft conversions, general building,...

    39 reviews / 4.95 out of 5

    RAS did a superb job for us. They carried out an extensive top-to-bottom refurbishment of our double-fronted Edwardian house. This included an...

    London
    Hertfordshire
    NW7 0AN

  • Extension Specialists in Borehamwood. Covering London and Hertfordshire areas.

    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...

    76 reviews / 4.86 out of 5

    This is the third time I have used Lukpol Building Services and the work each time has been excellent. These works consisted of conversion of a...

    Borehamwood
    Herts
    WD6 2JD

  • Extension Specialists in Uxbridge. Covering Uxbridge, Ruislip, Ickenham, Rickmansworth, Denham, Hillingdon and Harefield

    Our building services company JPH Property Developments was established over 20 years ago, and I have 40 years experience in the building...

    12 reviews / 4.96 out of 5

    Jason was very polite and courteous. He listened to our needs and once we all agreed on the work he just cracked on with no fuss. He was...

    Uxbridge
    Buckinghamshire
    UB9 5DJ

  • 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

  • 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

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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 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 North London, North West London, Central London and all surrounding areas.

    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...

    60 reviews / 4.94 out of 5

    Bright Builders are an amazing team of friendly, responsible and professional builders. Ervin is a great person to work with; understanding,...

    London
    N20 0HD

  • 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 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 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
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Other services relating to Extension Specialists in Harrow

Our average rating for Extension Specialists

5.0 - 5.0 out of 5 from 2622 reviews

  • 21st Century Design & Build Ltd, London

    5 out of 5.0

    "I was very satisfied with the work carried out by Thomas and his team to recently install 3 windows in my property. The..."

    Howard Davis on 1st October 2026

  • R&J Building Services Shefford Limited, Henlow

    4 out of 5.0

    "Amazing service from start to finish for our garage conversion very happy with the finished job. Always on time and..."

    Daniel Robinson on 28th September 2026

  • LINX Design And Build, London

    5 out of 5.0

    "Happy my family with the work done on the roof, kitchen, bathroom and addition to our property. The group was amiable,..."

    Thomas Fraser on 23rd September 2026

  • 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

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