AjA Building Services Logo - Builders Stevenage Hertfordshire, St Albans and Welwyn Garden City

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Helping make
your dream

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no obligation

Welcome to AjA Building Services
Professional builders in Stevenage, St Albans, Welwyn Garden City & Hertfordshire

AjA Building Services, we are a long established family run builders in Stevenage Hertfordshire with a focus on quality and customer care.

Our services include:

  • General Building
  • Extensions
  • Alterations
  • Loft Conversions
  • Roofing
  • Brickwork and Repointing Specialist
  • Chimneys repointed, repaired or rebuilt
  • Listed building maintenance & refurbishment

We provide our building services across all of Hertfordshire including St Albans, Harpenden, Sandridge, Wheathampsted, Welwyn Garden City, Stevenage and Letchworth. We also cover parts of Bedfordshire, Buckinghamshire, Middlesex, Essex and North London.

We pride ourselves on providing a personal service of high quality and complete reliability. We have experience of over 20 years and provide all aspects of building works, including specialist areas such as conservation work to listed buildings. Some of the projects we have been involved in working on include:

  • The Imperial College - London
  • Sopwell House Hotel - St Albans
  • Redcoats Farmhouse Hotel & Restaurant - Hitchin
  • Watergate Bay Hotel - Newquay

At AjA Building Services we work closely with our clients throughout their building projects from initial concept to completion and we manage all communications with local authority building planners and inspectors to ensure every detail is agreed and satisfactorily completed. Clients are kept informed and up to date throughout all works.

We are equally happy working on small jobs as well as undertaking large projects so whatever your building requirement we are able to help.

We will be pleased to quote for your building requirements whether it’s a home extension, loft conversion, roofing, alterations or a small repair. AjA Building Services advice and quotations are free.

Much of our clientele comes from word of mouth as satisfied customers recommend us and first time clients become repeat customers. We consider health and safety to be a very important issue so you can be sure that our workplace will always be kept safe, clean and tidy.

Should you require any more information or a free consultation then please do not hesitate to contact us:

Get a free quote


  • "I should like to thank you for a job efficiently and very well done. I have been very satisfied also with the building work you did for me last year."
    - Maryam Rodway - Welwyn
  • "Thank you for the work on the new gate and wall. I am very pleased with the end result - and what is more, my wife is very pleased as well (so that can't be bad!)"
    - Donald Ould - Welwyn Garden City
  • "Thank you so much for a lovely quick job. It was a pleasure to deal with you and I will recommend you to everyone."
    - M. Pamphilon - Harpenden
  • "May we take this opportunity of thanking you for the high standard of your workmanship."
    - D. Kent - London

Click here to read more testimonials.....