Contract modifications are of the following types:
(a) Bilateral. A bilateral modification (supplemental agreement) is a contract modification that is signed by the contractor and the contracting officer. Bilateral modifications are used to—
(1) Make negotiated equitable adjustments resulting from the issuance of a change order;
(2) Definitize letter contracts; and
(3) Reflect other agreements of the parties modifying the terms of contracts.
(b) Unilateral. A unilateral modification is a contract modification that is signed only by the contracting officer. Unilateral modifications are used, for example, to—
(1) Make administrative changes;
(2) Issue change orders;
(3) Make changes authorized by clauses other than a changes clause (e.g., Property clause, Options clause, or Suspension of Work clause); and
(4) Issue termination notices.
[48 FR 42386, Sept. 19, 1983, as amended at 66 FR 2133, Jan. 10, 2001]
Notes of Decisions
D & H Distrib. Co. v. United States, 102 F.3d 542 (Fed. Cir. 1997).
· cites it 2× “1 The contracting officer characterized the July 6, 1989, modification to the contract as an "administrative change," which is a unilateral change authorized under part 43 of the Federal Acquisition Regulation, see 48 C.F.R. § 43.103 (b)(1). Because the change was made pursuant…”
Solar Turbines, Inc. v. United States, 23 Cl. Ct. 142 (Ct. Cl. 1991).
“48 C.F.R. § 43.103 (1989) provides, in pertinent part: Contract modifications are of the following types: (a) Bilateral.”
The GEO Grp. Inc v. Inslee (W.D. Wash. 2024).
“at 12 (citing 48 C.F.R. § 43.103 ). GEO also contends that 6 “various routing or annual ‘modifications made to, or authorized by’ a contract may be 7 necessary to comply with applicable federal statutes and regulations.”
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