CHAS is established as the market leader for health and safety pre-qualification in the UK. It is a non-commercial scheme available to suppliers and to organisations looking for suitably competent suppliers.


A national online database, the UK's largest register for pre-qualified contractors and consultants. In terms of efficiency, time and cost saving, and best practice, Constructionline is proven to deliver for public and private sector organisations. Recommended by the OGC Common Minimum Standards and The Local Government Task Force.   


ISO (International Organization for Standardization) is the world's largest developer and publisher of International Standards. ISO is a network of the national standards institutes of 162 countries, one member per country, with a Central Secretariat in Geneva, Switzerland, which coordinates the system. You can view our certificate here.


NHBC Warranty

10 year warranty cover provided on newly constructed homes and conversions, which protects the home-owner from costs of repairing certain elements of a new home which have suffered damage arising from a failure to build in accordance with our technical requirements at the time of construction or conversion.