Jurisdiction(s):
United Kingdom

JCT Information Release Schedules: purpose, drafting and incorporation; programme interface, contractual status and SBC 2024 duties; managing EOT and loss and expense risks; practical guidance on contents, updates and disputes

Published by a LexisNexis Construction expert

Practice notes

This Practice Note outlines the nature and purpose of the Information Release Schedule (IRS), how it operates within JCT contracts, and key practical points to bear in mind when deploying the IRS and embedding it in a JCT agreement.

Information Release Schedule

Under JCT, the IRS—see, for instance, the fifth recital of the JCT Standard Building Contract Without Quantities—sets out which information the Architect or Contract Administrator will issue, together with the timing of that release. In effect, it functions as a programme governing the orderly flow and delivery of design information.

An IRS is required on a project where comprehensive design data is not available at the tender documentation stage, or will still be incomplete by the time the contract is executed. This arises most acutely on fast‑track schemes, where external drivers—typically determined by the project’s business case, for example a harvest deadline on a manufacturing scheme—fix the completion date, and design must proceed in tandem with early construction activities to achieve that date. Whilst commonplace on fast‑track work, the IRS is also encountered on many other projects...

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Rhiann Storey , BA BSc LLM FRICS FCIArb MAE

HKA

Rhiann Storey is a French-speaking chartered quantity surveyor with sixteen years’ experience across a variety of clients, markets and projects. Her dual qualifications give her a solid base from which to provide a range of services to clients, with a focus on dispute resolution services, for both live and completed projects.As a practising member of the Academy of Experts (TAE), she has been instructed as quantum expert on a number of occasions and provided quantum and entitlement assessments for claims and independent expert reports used in adjudication, mediation, arbitration and litigation proceedings. Rhiann has also had several adjudication decisions published.She has project experience both for contractors and clients spanning multiple sectors including healthcare, education, oil and gas, mining, power, industrial, defence, retail, residential, sports and recreation, entertainment, and heritage. ...

Web page updated on 21/05/2026

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