2.

Services which are an extension of services already started, as referred to in point (c) of paragraph 1, are as follows: additional services not covered by the principal contract but which, as a result of unforeseen circumstances, have become necessary for the performance of the contract, provided that the additional service cannot be technically and economically separated from the principal contract without serious inconvenience for the contracting authority and the aggregate amount of additional services does not exceed 50 % of the value of the principal contract; additional services consisting in the repetition of similar services entrusted to the contractor providing services under a first contract, provided that: a contract notice was published for the first service and the possibility of using the negotiated procedure for new services for the project and the estimated cost were clearly indicated in the contract notice published for the first service; the extension of the contract is for a value and duration not exceeding the value and the duration of the initial contract.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.