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  4. Extension Builders in Welwyn Garden City

Extension Builders in Welwyn Garden City

Browse trusted local Extension Builders in Welwyn Garden City 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.

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    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 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 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...

    115 reviews / 4.92 out of 5

    A truly exceptional job yet again by Beswick Builders. Great communication, always providing updates on budget, timing and the plan for the...

    St Albans
    Hertfordshire
    AL1 1SF

  • 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 Waltham Cross. Covering Herts, Essex and North London.

    GP Property Services has over 25 years experience in offering a wide range of building services from extensions, renovations and loft conversions...

    30 reviews / 4.99 out of 5

    I don’t have a bad word to say about Gary and Paul. They completed exemplary work on our loft extension at a very reasonable price. From start to...

    Waltham Cross
    Herts
    EN7 6DR

  • 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

  • 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 Borehamwood. Covering postcode WD6 incorporating a 15-mile radius of North 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...

    5 reviews / 4.83 out of 5

    I was genuinely amazed at how smoothly AEA handled everything. Their constant updates and progress reports were excellent, and the team worked...

    Borehamwood
    England
    WD6 5DR

  • Extension Specialists in Ware. Covering Herts . London . Essex . Cambs . Beds .

    Reid James is a family run Building and Construction company based in Ware, Hertfordshire who cover all areas in London, Essex, Cambridge, and...

    107 reviews / 4.82 out of 5

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

    Ware
    Herts
    SG11 1BQ

  • 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

  • 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 all surrounding areas within a twenty mile radius

    Welcome to Prime UK Contractors LtdWe are a builders and extension specialists based in London that have been successfully completing work in the...

    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 UK contractors...

    London
    N12 9LY
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Other services relating to Extension Builders in Welwyn Garden City

Our average rating for Extension Builders

4.89 - 4.89 out of 5 from 2408 reviews

  • East Land & Construction Ltd, London

    5 out of 5.0

    "We recently had a kitchen extension completed and I honestly cannot recommend East Land & Construction enough. With two..."

    Shannan Conway on 20th January 2026

  • Powerpillar Ltd, London

    2 out of 5.0

    "We got in contact with Powerpillar in December 2024 about renovating our Victorian home including repointing brickwork,..."

    Efe C on 14th January 2026

  • Linx Construction Group Limited, London

    5 out of 5.0

    "Our ground floor bathroom and kitchen were renovated. We also had the floor levelled and a wall taken down. Our builder..."

    Cole Willisons on 13th January 2026

  • Westbury Builders, Gravesend

    5 out of 5.0

    "The company fixed problems to my property left by other builders. They have been amazing and invloved me in every step on..."

    Mrs C Mapungwanna on 13th January 2026

  • JLS Building Services Ltd, Southend On Sea

    5 out of 5.0

    "Very happy with end result. Consulted throughout project and end result was as agreed. No extra costs to original quote..."

    Julie Wright on 12th January 2026

Other locations for trusted Extension Builders

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