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House Extensions in St Albans, Stevenage and the Surrounding Areas

BDH Builders provides a start-to-finish service for house extensions in Hertfordshire and Bedfordshire. In our role as your chosen building contractors, we utilise the land surrounding your existing home in order to transform your lifestyle inside it. With one of our superior quality extensions in place, you can truly maximise the potential of your property. From a single-storey structure downstairs to a brand-new double-storey addition, house extensions not only create much-needed living space, they also increase the resale value of your home too. With over 10 years of specialist experience, BDH Builders has a proven track record for completing extension projects on time, within budget and to any specification.


Operating out of Stevenage, our building contractors cover locations throughout the surrounding region. We undertake a significant amount of extension work in our hometown as well as Harpenden, Hatfield, Hertford, St Albans, Watford and the neighbouring local villages. Our team has worked on extensions of every type and size, so we have the ability to turn any dream into a stunning reality.


To arrange an initial consultation with a member of our team in the comfort of your own home, please call us on 07875 699 820. We listen carefully to any concepts and visions for house extensions before offering our own advice and guidance. BDH Builders provides quotations free of charge and with no obligation.

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Complete Project Management


From the very first point of contact, BDH Builders provides end-to-end project management for our customers in Stevenage, St Albans and the surrounding areas. We work closely with you to gain a complete understanding of the goals and expectations you have for your new room or rooms. It remains essential for all parties involved to have a clearly defined vision for the work at hand as well as finalising the budget and timescale too. This creates a smooth path through each stage of the process, minimising the chances of disruption and any unexpected surprises.


By choosing building contractors who provide house extensions with full project management, homeowners drastically reduce the stress and concern usually associated with construction projects of this scale. With no worries about organising, scheduling and general legwork, you free up your own time to concentrate on daily life. What’s more, with BDH Builders in control of your project, you have one familiar point of contact for the duration of your project, making it easy and simple to discuss progress and general queries.

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Key elements of our project management service include:


  • Liaising with local authorities in Stevenage, St Albans and the neighbouring areas to secure planning approval if needed
  • Sourcing and arranging delivery of premium-grade building materials for a prompt start to your project
  • Arranging for the required building control inspections and sign-offs at various points of construction


Quite simply, when it comes to house extensions, we do it all. As vastly experienced building contractors, we deliver a reliable, swift service without any compromise in the quality of our own demanding standards. In addition, we appreciate our work takes place in and around your home. For the ultimate peace of mind, we treat every property with the care and respect we would expect in our own.


In addition to house extensions, we also provide a service for loft conversions.

To discuss options for house extensions in Stevenage, St Albans or the wider Hertfordshire and Bedfordshire region, call 07875 699 820.

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