Within amounts appropriated for military construction and military family housing, the Secretary concerned may obtain architectural and engineering services and may carry out construction design in connection with military construction projects, family housing projects, and projects undertaken in connection with the authority provided under section 2854 of this title that are not otherwise authorized by law. Amounts available for such purposes may be used for construction management of projects that are funded by foreign governments directly or through international organizations and for which elements of the armed forces of the United States are the primary user.

In the case of architectural and engineering services and construction design to be undertaken under subsection (a) for which the estimated cost exceeds $5,000,000, the Secretary concerned shall notify the appropriate committees of Congress of the scope of the proposed project and the estimated cost of such services before the initial obligation of funds for such services. The Secretary may then obligate funds for such services only after the end of the 14-day period beginning on the date on which the notification is received by the committees in an electronic medium pursuant to section 480 of this title.

If the Secretary concerned determines that the amount authorized for activities under subsection (a) in any fiscal year must be increased the Secretary may proceed with activities at such higher level only after the end of the 14-day period beginning on the date on which the Secretary submits, in an electronic medium pursuant to section 480 of this title, to the appropriate committees of Congress notice of the need for the increase, including the source of funds to be used for the increase.

For architectural and engineering services and construction design related to military construction and family housing projects, the Secretaries of the military departments may incur obligations for contracts or portions of contracts using military construction and family housing appropriations from different fiscal years to the extent that those appropriations are available for obligation.