Current
Core Supplement
JCT Design and Build Contract (DB)
Agreement for use with the Design and Build contract, for sub-contract works whether or not they include design by the sub-contractor. Can be used where the sub-contract works and/or main contract works are to be carried out in sections, and for sub-contract works that are to be carried out on the basis of an adjusted sub-contract sum (adjustment for variations etc.) or by complete re-measurement of the sub-contract works.
Current edition: DBSub/A 2024. Previous editions: DBSub/A 2016, DBSub/A 2011, DBSub/A 2005 (Revision 2 2009).
Sweet and Maxwell are a large commercial Publisher for the legal and regulatory markets. In May 2005 they took over the publishing of the JCT contracts.
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.