Payment due dates for construction contracts are addressed at FAR 32.904(d). The following procedures apply to construction and building service contracts:

(a) The amount of final payment must include, as appropriate, deductions to cover any of the following:

(1) Liquidated damages for late completion.

(2) Liquidated damages for labor violations.

(3) Amounts withheld for improper payment of labor wages.

(4) The amount of unilateral change orders covering defects and omissions.

(5) The agreed-upon dollar amount in a Deficiency Report, which is included in all applicable Operation and Maintenance (O&M) service contracts.

(b) An official one level above the contracting officer shall approve justifications exercising the authority prescribed by FAR 32.904(d)(1)(i)(B). The time needed should be determined on a case-by-case basis, but the specified constructive acceptance period shall not exceed 30 days.