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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 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...

    31 reviews / 4.99 out of 5

    Gary and Paul have just completed a downstairs rear extension, side upstairs extension and full redecoration including new windows throughout on...

    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

  • 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

  • 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 Ware. Covering Herts . London . Essex . Cambs . Beds .

    About UsReid James is a family-run building and construction company based in Ware, Hertfordshire, serving 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

  • 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,...

    38 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
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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 2268 reviews

  • OEB Building Service Ltd, Wickford

    5 out of 5.0

    "I reached out to Richard to help install a new door and he came round very quickly to take a look. He explained..."

    Lucy Starke on 9th March 2026

  • OEB Building Service Ltd, Wickford

    5 out of 5.0

    "Richard was great to work with. Listened to our requirements and came up with a great plan and we are really happy with..."

    Jane Stonell-Bain on 8th March 2026

  • OEB Building Service Ltd, Wickford

    5 out of 5.0

    "Bath replaced with walk in shower. If you want a job done extremely well and quickly then call Richard. He turns up on..."

    Veronica King on 8th March 2026

  • OEB Building Service Ltd, Wickford

    5 out of 5.0

    "Richard has been excellent to work with, and is the only trader we have ever trusted with the keys to our home when we..."

    Paul Morgan on 7th March 2026

  • LINX Design And Build, London

    5 out of 5.0

    "Our new kitchen was expertly fitted by the Linx crew. The quality is superb, and each unit was put flawlessly. They made..."

    Steven Robert on 4th March 2026

Other locations for trusted Extension Builders

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