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Sequence of works/sequencing meaning

What does Sequence of works/sequencing mean?
Sequencing (sequence of works) describes the planned order in which construction activities, trades and operations are carried out under a construction contract. It is typically recorded in the contractor’s programme and method statements, showing logic links, dependencies, access requirements and the critical path. The term is not defined by legislation; it is a descriptive expression used across England & Wales, Scotland, Northern Ireland and Ireland, and is referenced in standard forms (for example, JCT/SBCC, NEC, RIAI and the Irish Public Works Contracts). Usage is broadly consistent across these jurisdictions. Interference with the agreed or planned sequence—through variations, late or deficient design information, restricted access, utility delays or coordination with other contractors—can cause delay and disruption. This may entitle the contractor to an extension of time and, where permitted by the contract, loss and expense or compensation. Employer-imposed out-of-sequence working often increases cost. Conversely, resequencing for the contractor’s convenience or to recover its own delay is usually at the contractor’s risk and may not justify additional time or money. Sequencing issues are commonly evidenced by contemporaneous records, updated programmes and critical path analysis. Clear programming obligations, notice provisions and change control help allocate risk, manage float and avoid disputes over completion and delay damages.
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View the related News about Sequence of works/sequencing

NEWS
Weekly property disputes update: Supreme Court on URS v BDW and Etridge; LTA 1954 reform; service charges; rates mitigation; IA 1986 s 234/receivers; roof gardens; Scotland—5 June 2025

In this issue: Repairing obligations and dilapidations Business tenancies Service charges Contractual issues Enforcing security and property insolvency Disputes and remedies Rent and rates Property disputes in Scotland Additional Property Disputes updates LexTalk® Property Disputes: a Lexis®Nexis community Daily and weekly news alerts New and updated content Dates for your diary Repairing obligations and dilapidations Supreme Court confirms developer’s entitlement to pursue negligence, DPA 1972 and contribution claims for remedial costs against its structural engineer (URS v BDW). The case of URS Corporation Ltd v BDW Trading Ltd [2025] UKSC 21 is the latest instalment in a sequence of decisions arising from claims by a developer (BDW) against its structural engineer (URS) concerning structural defects in two residential developments, where the remedial works were undertaken after it no longer held any proprietary interest in the developments and before any third-party claims had been notified...

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NEWS
Construction law update: Supreme Court URS v BDW, DPA damages scope, Grenfell progress, roof gardens not storeys, and Welsh Procurement Act guidance—plus new resources, alerts and trackers

In this issue: Building safety Procurement in construction LexTalk®Construction: a Lexis®Nexis community Daily and weekly news alerts New and updated content Construction trackers Building safety Supreme Court confirms developer’s entitlement to pursue negligence, DPA 1972 and contribution claims for remediation costs against structural engineer (URS v BDW) The judgment in URS Corporation Ltd v BDW Trading Ltd [2025] UKSC 21 marks the latest instalment in a sequence of decisions stemming from proceedings by a developer (BDW) against its structural engineer (URS) over structural shortcomings in two residential developments. The remedial works were undertaken when BDW no longer retained any proprietary interest in those sites, and before any third-party claims had been intimated...

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NEWS
Ndole Assets v Designer M&E: claim form service by claims consultants, reserved legal activities, and risks of unregulated litigation conduct (England and Wales)

The pitfalls of reducing the protection of reserved legal activity (Ndole Assets Ltd v Designer M&E Services) Original news: Ndole Assets Ltd v Designer M&E Services UK Ltd [2017] EWHC 1148 (TCC) What was your role in the case and what were the key issues? Our construction team acted for Designer M&E Services UK Ltd, a specialist mechanical and electrical sub-contractor, as defendant and applicant for strike out. Designer undertook works on a Hackney development in 2010 for the main contractor, Sheldon Construction SRVC (London) Limited. Their contract was terminated in 2011, followed by multiple adjudications. Thereafter, Designer heard nothing for five years. During that interval, via a sequence of loan arrangements and assignments, a British Virgin Islands company, Ndole Assets Limited, came to assert the supposed cause of action against Designer. Ndole commenced proceedings in October 2016. An unregistered barrister, Alexander Dain, together with his claims consultancy, CSD Legal, handled virtually every step for Ndole—save for a single letter enclosing the claim form—including the service of...

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View the related Practice Notes about Sequence of works/sequencing

PRACTICE NOTES
Construction law and practice glossary—S: schedules, scope, set-off, step-in, section 106, Scheme for Construction Contracts, suspension

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Schedule of amendments A compiled list of changes to a standard form contract in which the parties record their agreed departures from the issued terms. Accordingly, it should be read alongside the underlying standard form. The parties should ensure any negotiated and agreed schedule of amendments is duly incorporated into the contract. Within NEC3/NEC4 suites, such alterations to the standard form are known as Z clauses. Refer to Practice Notes: Construction contract documents and Selection of standard form construction contracts, and to our relevant Precedent schedules under the Precedents tab in subtopics: JCT contracts 2024—overview, JCT contracts 2016, JCT contracts 2011, NEC contracts and Other standard form construction contracts. Schedule of rates/prices A schedule used in tendering when precise quantities are not established, or within a lump sum arrangement for pricing variations (often termed a Bill of Quantities). The tenderer...

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PRACTICE NOTES
Residential service charge consultation under s.20 LTA 1985: qualifying works, long-term agreements, procedures, dispensation and limits on recovery (England and Wales)

Overview of consultation process The flowchart below sets out a straightforward overview of the matters to weigh up when deciding whether consultation is required and, if so, the sequence of steps to follow. It is not a replacement for the fuller guidance that appears below, which should be consulted at every stage. When do the consultation requirements apply? The landlord must consult with tenants before any of the following occur: carrying out qualifying works that will mean the contribution of any tenant towards those works exceeds £250, or entering into a qualifying long-term agreement where the costs will result in the contribution of any tenant being more than £100 within any 12-month accounting period This process is often informally called 's 20 consultation', a shorthand derived from sections 20–20ZA of the Landlord and Tenant Act 1985 (LTA 1985). Its purpose is to ensure that, where a landlord plans to undertake either qualifying works or to enter into a qualifying...

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PRACTICE NOTES
Contractor's Programme: Contractual Status, Parties' Obligations, Standard Form Positions (JCT, NEC, FIDIC, MF/1) and SCL Protocol Guidance

This Practice Note considers the status of the programme in a construction contract, what difference it makes if the programme is a contract document and the approach of standard form contracts to the programme. The programme sits at the heart of every construction scheme. It enables the contractor to arrange the job and map out how the works will be executed. It likewise allows the employer and contract administrator to track progress, gauge the contractor’s output and evaluate delay. So, what duties do the parties have concerning the programme? Broadly, save where the construction contract provides to the contrary, the contractor may schedule the works and execute them in whatever sequence it considers appropriate, with the employer having limited sway over the order and tasks. In GLC v Cleveland Bridge and Engineering (1984) 34 BLR 50 (not available in LexisNexis®), the court observed that a contractor is generally entitled to 'plan and perform the work as he pleases, provided always that he finishes it by the time fixed in...

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