Facilities Construction Energy Conservation Act - Declares it to be the policy of the United States to insure that energy conservation practices are employed in the design of new Federal and federally insured facilities. States that each department, agency, or instrumentality of the Federal Government having jurisdiction over any construction program shall require the preparation of a complete life-cycle cost analysis for all new facilities exceeding fifty thousand square feet of usable floor space.

Provides that such life-cycle cost analysis shall include specified elements, including: (1) the positioning of the facility on its physical site; (2) the amount and type of glass and insulation employed in the facility; (3) the variable occupancy and operating conditions of the facility; and (4) an energy consumption analysis of the facility's heating, ventilating, and air-conditioning system, lighting system, and all other energy consuming systems.