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Design and Build Contract (DB)

The JCT Design and Build Contract is designed for construction projects where the contractor carries out both the design and the construction work.

The Design and Build Contracts are:
JCT Design and Build Contract
JCT Design and Build Sub-Contract Agreement
JCT Design and Build Sub-Contract Conditions
JCT Design and Build Conntract Guide
JCT Design and Build Sub-Contract Guide


Design and build is a generic term describing a procurement route in which the main contractor is appointed to design and construct the works.

The appeal to clients is it gives a single point of responsibility for delivering the entire project. Some clients however consider it is only appropriate for simple projects, where design quality is not the main consideration.

A contractor can either be appointed to carry out all of the design work, or if the client wishes to have greater influence over the design, a concept design and outline (or performance) specification can be prepared by a consultants employed by the client, and then the contractor is appointed to complete the design and carry out the construction.

If the contractor is appointed at the start of a project (so that they can contribute to the development of the design from the beginning), they work with a design team (who may be employed either by the contractor or by the client at this stage) to develop the design, on the basis of which a fixed price is then negotiated.

Design and build contracts can be awarded on a fixed-price, lump-sum basis, but price certainty is then dependent on not making any subsequent changes as these could prove to be expensive (as prices charged by the contractor for those changes will not be subject to competition).

Features of projects using the Design and Build Contract:

  • The scale of design work need to be carried out by the contractor can vary greatly on design and build projects. Sometimes the contractor will complete a design based on a concept provided through the employer’s advisers. Other instances may call for the contractor to be responsible for producing and completing the design right from the outset, either through their in house team or employing their own specialist designers.
  • The design requirements and responsibility of the contractor in design and build projects go beyond that covered in a traditional contract with a contractor’s designed portion. Adequate time and care needs to go in to detailing the employer’s requirements so that the obligations of the contractor with regard to design is clear.
  • The employer normally uses an agent (either external consultant or employee) to administer the contract.
  • Works can be carried out in sections.
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  • Design and Build Contract

    JCT Contracts

    JCT Design and Build Contract 2016

    Publisher: Sweet & Maxwell Date Published: Sep 2016 ISBN: 9780414054646 Binding: Paperback JCT Design and Build Contract 2016 (DB) Current edition: DB 2016 Previous editions: DB 2011, DB 2005 (Revision 2 2009), WCD 1998 The JCT Design and Build...

    MRP: £86.40
    £81.60
  • Design and Build Guide

    JCT Contracts

    JCT Design and Build Contract Guide (DB/G)

    Publisher: Sweet & Maxwell Date Published: Sep 2016 ISBN: 9780414054622 Binding: Paperback JCT Design and Build Contract Guide 2016 (DB/G) A comprehensive guide to accompany the Design and Build Contract (DB), featuring an explanation of the...

    MRP: £44.00
    £41.50
  • Design Build Sub-Contract Conditions  DBSub/C

    JCT Contracts

    JCT Design and Build Sub-Contract Conditions (DBSub/C)

    Publisher: Sweet & Maxwell Date Published: Sep 2016 ISBN: 9780414054639 Binding: Paperback Current edition: DBSub/C 2016 Previous editions: DBSub/C 2011, DBSub/C 2005 (Revision 2 2009) JCT Design and Build Sub-Contract Agreement 2016 (DBSub/C) The...

    MRP: £80.40
    £76.20
  • Design Build Subcontract Guide  DBSub/G

    JCT Contracts

    JCT Design and Build Sub-Contract Guide (DBSub/G)

    Publisher: Sweet & Maxwell Date Published: Sep 2016 ISBN: 9780414054653 Binding: Paperback JCT Design and Build Subcontract Guide 2016 (DBSub/G) A comprehensive guide to accompany the Design and Build Sub-Contract (DBSub), featuring an explanation of...

    MRP: £41.00
    £38.75
  • Design Build Sub-contractor Agreement  DBSub/A

    JCT Contracts

    JCT Design and Build Sub-Contract Agreement (DBSub/A)

    Publisher: Sweet & Maxwell Date Published: Sep 2016 ISBN: 9780414054660 Binding: Paperback Current edition: DBSub/A 2016 Previous editions: DBSub/A 2011, DBSub/A 2005 (Revision 2 2009) JCT Design and Build Sub-Contract Agreement 2016 (DBSub/A) The...

    MRP: £68.40
    £64.80
  • Guide to JCT Design and Building Contract 2016

    RIBA Publishing

    Guide to JCT Design and Building Contract 2016

    Author: Sarah Lupton Publisher: RIBA Publishing Date Published: May 2017 Stock Code: 74351 Pages: 176 ISBN: 9781859463918 Binding: Paperback Guide to JCT Design and Building Contract 2016 Guide to JCT Design and Build Contract 2016 is a practical guide...

    MRP: £47.50
    £44.00
  • DOM/2 Sub-Contract Articles of Agreement

    CIP

    DOM/2 Sub-Contract Articles of Agreement

    Date Published: December 2017 Format: Paperback Author: Contractors Legal Group Product Code: DOM2A-2018 ISBN: 9781852631505 Publisher: Construction Industry Publications Ltd. 2018 DOM2A Domestic Subcontract - Articles of Agreement Standard Form of...

    MRP: £63.00
    £59.70
  • 2018 DOM/2 Domestic Subcontract Conditions

    CIP

    2018 DOM/2 Domestic Subcontract Conditions

    Date Published: December 2017 Author: Contractors Legal Group Format: Paperback ISBN: ISBN: 9781852631512 Publisher: Construction Industry Publications Ltd. The contract is appropriate for use with the JCT Design and Build Contract 2016 Edition and...

    MRP: £69.30
    £64.80
  • Short Form of  Sub-Contract  ShortSub

    JCT Contracts

    JCT Short Form of Subcontract (ShortSub)

    Publisher: Sweet & Maxwell Date Published: July 2016 ISBN: 9780414054608 Binding: Paperback JCT Short Form of Subcontract (ShortSub) 2016 Current edition: ShortSub 2016 Previous editions: ShortSub 2011, ShortSub 2005 (Revision 2 2009), Short/DSC 2003...

    MRP: £30.00
    £28.50
  • Sub-Subcontract

    JCT Contracts

    JCT Sub-subcontract 2016

    Publisher: Sweet & Maxwell Date Published: July 2016 ISBN: 9780414054615 Binding: Paperback JCT Sub-subcontract (SubSub) 2016 The JCT Sub-subcontract is a simple, straightforward form of contract. It is suitable for a sub-subcontract where the main...

    MRP: £30.00
    £28.50
  • Design and Build Contract Tracked Changes between 2011 and 2016 editions

    JCT Contracts

    Design and Build Contract (DB) Tracked Change Document

    Publisher: Sweet & Maxwell Date Published: Jun 2016 ISBN: 9780414057944 Binding: Paperback Design and Build Contract 2016 Tracked Change Document Tracked Change Documents The JCT Design and Build Contract (DB) Tracked change Document highlights the...

    MRP: £110.00
    £104.50
  • JCT DB16 Project Pack for the Employer/Employer's Agent

    JCT, RIBA

    JCT DB16 Project Pack for the Employer/Employer's Agent

    Author: David Chappell/JCT Format: Paperback ISBN: 9781859468333 Publisher: RIBA Date Published: Aug 2017 Stock Code: 90834 Design JCT DB16 Project Pack for the Employer/Employer's Agent The DB16 Project Pack for the Employer/Employer's Agent is a...

    MRP: £60.00
    £54.00
  • BIM and JCT Contracts

    JCT Contracts

    BIM and JCT Contracts 2019

    Publisher: Sweet & Maxwell Date Published: Sep 2017 ISBN: 9780414071889 Binding: Paperback BIM and JCT Contracts is a new practice note which provides guidance on using JCT contracts on projects where BIM is to be used. The aim of BIM and JCT...

    £25.00
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