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  4. Extension Builders in Watford

Extension Builders in Watford

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

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.

  • Don't forget! Please mention TrustATrader when you contact any of our trusted traders.

    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 St. Albans. Covering Herts, Beds & Bucks

    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...

    7 reviews / 4.98 out of 5

    They did an amazing job managing our kitchen renovation. He kept us updated daily and resolved small issues quickly without a fuss. The final...

    St. Albans
    Hertfordshire
    AL1 2QF

  • Extension Specialists in Harrow. Covering Harrow and incorporating a 15 mile radius

    NO MARKETING CALLS AND NO TIME WASTERS PLEASE.BLS Builders, is a family-run business for over 25 years, and we are based in Harrow area.We offer...

    11 reviews / 5.0 out of 5

    We were really pleased with Edmund and his team’s work on our bathroom. He was friendly and professional. One thing that stood out was his...

    Harrow
    HA5 1EU

  • Extension Specialists in Radlett. Covering all areas of Herts and London.

    ADS Contracts is a well established, trustworthy, reliable and professional company with over 30 year's experience. Based in Radlett, (Herts), we...

    30 reviews / 4.54 out of 5

    Very experienced team of professionals. Dave and his team have done various jobs for me over the last few years and they have all been completed...

    Radlett
    WD7 9FH

  • Extension Specialists in St Albans. Covering 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...

    114 reviews / 4.92 out of 5

    We had a cramped, dark kitchen which we had talked about extending for several years. Matt came round and discussed what could be done and made...

    St Albans
    Hertfordshire
    AL1 1SF

  • 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...

    72 reviews / 4.85 out of 5

    Lukasz and his team member worked very well. Concreting an extended area to my shed Base and reset some loose paving steps. Work completed the...

    Borehamwood
    Herts
    WD6 2JD

  • Don't forget! Please mention TrustATrader when you contact any of our trusted traders.

    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 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,...

    37 reviews / 4.95 out of 5

    Sorin and his team recently completed our ground floor renovation and we are very pleased with all aspects of the job. Sorin provided us with a...

    London
    Hertfordshire
    NW7 0AN

  • Extension Specialists in St. Albans. Covering Hertfordshire, Bedfordshire, Greater London, 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...

    20 reviews / 4.83 out of 5

    Vito and Dan did a great job on our garage conversion (along with all sub-contractors). We are very happy with the final result. Competitive...

    St. Albans
    Hertfordshire
    AL3 6HR

  • Extension Specialists in London. Covering Finchley 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...

    16 reviews / 4.99 out of 5

    Sebastian and Piotr did an amazing job on our bathroom. It was a dreadful, poorly designed mess with terrible plumbing and they did a very...

    London
    N3 1JG

  • 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 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
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Other services relating to Extension Builders in Watford

Our average rating for Extension Builders

5.0 - 5.0 out of 5 from 2406 reviews

  • Reid James Ltd, Ware

    5 out of 5.0

    "A lovely job carried out by Stuart and his team. Complete refurbishment of our shower room/cloakroom. Work completed to a..."

    Tony and Linda Burgess on 20th October 2025

  • JDR Building Services, Hornchurch

    5 out of 5.0

    "Very pleased with the overall finish, competitive pricing, easy to work with to discuss the job and upcoming decisions..."

    James Ward on 19th October 2025

  • Nova Design & Build London Ltd, London

    5 out of 5.0

    "Adam and his team have been great partners to conduct works at our flat. Adam has always been very communicative and..."

    Giovanni V on 19th October 2025

  • UCS Construction, Highgate

    5 out of 5.0

    "Richard sourced and fitted a beautiful new external oak door which suited my home. He ensured the new locks fitted..."

    Angie Killeen on 18th October 2025

  • General Builders, Ashford

    5 out of 5.0

    "Dennis and Jack have been excellent all round. They’re honest, straightforward and found the most efficient way to get..."

    Rupert Hall on 17th October 2025

Other locations for trusted Extension Builders

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