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Construction & Works Procurement

Plain-language definitions of every Construction & Works Procurement term that shows up in government tender work.


Construction & Works ProcurementBOQ

Bill of Quantities (BOQ)

A bill of quantities is a structured pricing document prepared by a quantity surveyor that itemises all the materials, labour, and operations required to complete a construction project, enabling contractors to submit comparable tenders and providing a basis for valuing variations and interim payments during the works.

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Construction & Works ProcurementBIM

Building Information Modelling (BIM) in Procurement

Building Information Modelling in procurement refers to the use of shared digital representations of a built asset to improve collaboration, design quality, and cost certainty throughout the procurement and construction process, with the UK and several EU member states mandating minimum BIM standards for publicly procured works above defined thresholds.

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Construction & Works ProcurementCDM

Construction Design and Management (CDM) Regulations

The Construction Design and Management Regulations 2015 are UK health and safety regulations that allocate specific legal duties to clients, principal designers, principal contractors, designers, and contractors on construction projects, aiming to ensure that health and safety is managed throughout the design, procurement, and construction phases.

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Construction & Works Procurement

Construction Procurement (EU)

Construction procurement in the EU refers to the regulated process by which public authorities acquire building, civil engineering, and infrastructure works, governed primarily by Directive 2014/24/EU for standard works contracts and Directive 2014/23/EU for concessions, with mandatory advertising above defined financial thresholds.

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Construction & Works Procurement

Defects Liability Period

The defects liability period is the contractually defined period following practical completion during which the contractor remains obligated to return to site and remedy any defects in the works that become apparent, at the end of which the remaining retention is released and the contractor's performance obligations under the contract conclude.

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Construction & Works ProcurementFIDIC

FIDIC Contract

FIDIC contracts are a suite of internationally recognised standard conditions of contract for construction and engineering projects, published by the International Federation of Consulting Engineers, widely used for cross-border infrastructure projects in Europe and for works financed by multilateral development banks.

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Construction & Works ProcurementJCT

JCT Contract (Joint Contracts Tribunal)

JCT contracts are a suite of standard form construction contracts published by the Joint Contracts Tribunal, predominantly used in UK building procurement for commercial, residential, and public sector projects, offering a range of forms suited to different project types, procurement routes, and risk allocations.

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Construction & Works ProcurementNEC

NEC Contract (New Engineering Contract)

The NEC contract suite is a family of standard construction and engineering contracts published by the Institution of Civil Engineers, designed around collaborative management principles, early warning mechanisms, and clear risk allocation, widely used by UK public authorities and increasingly adopted across Europe for major infrastructure projects.

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Construction & Works Procurement

Practical Completion

Practical completion is the stage in a UK construction contract when the works are complete for all practical purposes, certified by the contract administrator or architect, marking the point at which possession of the site passes to the employer, half the retention is released, and the defects liability period begins.

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Construction & Works Procurement

Provisional Sums

Provisional sums are monetary allowances included in a construction contract's bill of quantities or pricing document to cover elements of work that cannot be fully designed or specified at tender stage, which are subsequently instructed, measured, and valued during the course of the works.

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Construction & Works Procurement

Public Works Concession

A public works concession is a contract under which a contracting authority grants the right to exploit a constructed work to an operator, with the key distinction that the operator assumes the operating risk, including demand and availability risk, rather than receiving direct payment for completed works.

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Construction & Works Procurement

Retention (Construction Contract)

Retention in a construction contract is a percentage of each interim payment withheld by the contracting authority as security against defective or incomplete work, released in two tranches: the first at practical completion and the second at the end of the defects liability period, once outstanding defects have been remedied.

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Construction & Works Procurement

Schedule of Rates

A schedule of rates is a priced list of unit rates for construction or maintenance activities, agreed at contract formation without fixed quantities, used to value work instructed under term maintenance contracts, indefinite quantity contracts, and framework agreements where the volume of work cannot be determined in advance.

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Construction & Works Procurement

Works Contract

A works contract is a public procurement agreement for the execution, or both the design and execution, of construction or civil engineering activities. It is one of the three main contract types under EU procurement law, alongside supply and services contracts.

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