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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.
The current version of this document is Design and Build Sub-Contract agreement 2024. Previous editions: DBSub/A 2005 (Revision 2 2009). JCT 2011 Contracts should not be used for construction contracts entered into after 1 October 2016. See also: Amendment 1 issued March 2015 (effective from 6 April 2015): JCT design and build sub-contract 2011 (DBSub/A and DBSub/C) (SMA, 2015), which has been included as a separate document. DBSub/A 2011. JCT 2011 has now been withdrawn following the successful release of the JCT 2016 edition of contracts, 10 May 2018.
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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.
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