(4)

for works contracts and service contracts: for additional works or services not included in the project initially considered or in the original contract but which have, through unforeseen circumstances, become necessary for the performance of the works or services described therein, on condition that the award is made to the economic operator performing such works or services: when such additional works or services cannot be technically or economically separated from the original contract without major inconvenience to the contracting authorities/entities, or when such works or services, although separable from the performance of the original contract, are strictly necessary for its completion. However, the aggregate value of contracts awarded for additional works or services may not exceed 50 % of the amount of the original contract; for new works or services consisting in the repetition of similar works or services entrusted to the economic operator to which the same contracting authorities/entities awarded an original contract, provided that such works or services are in conformity with a basic project for which the original contract was awarded according to the restricted procedure, the negotiated procedure with publication of a contract notice or a competitive dialogue. As soon as the first project is put up for tender, the possible use of this procedure shall be disclosed, and the total estimated cost of subsequent works or services shall be taken into consideration by the contracting authorities/entities when they apply Article 8. This procedure may be used only during the five years following the conclusion of the original contract, except in exceptional circumstances determined by taking into account the expected service life of any delivered items, installations or systems, and the technical difficulties which a change of supplier may cause;

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Source: EUR-Lex (Cellar) · retrieved 2026-10-11 · Text as adopted (Official Journal); later amendments are not incorporated in this text.