Project Cost Estimating Requirements - January 2007 (P-120)

The Project Estimating Requirements (P-120) is the supplement to the Facilities Standard (P-100). It is the cost-estimating and cost-management criteria document that supports building construction programs within the Public Buildings Service (PBS) of the U.S. General Services Administration (GSA). This document presents the technical and administrative requirements for routine cost estimating and cost-management tasks involved in a construction project’s planning and execution stages, and defines cost-estimating practices and standards for professional services. This document replaces the previously issued GSA Handbook P 3440.5 and all associated versions.

The instructions and criteria in this document are applicable to programming, design, construction management, and other professional-services contracts that involve cost-estimating and cost-management tasks. The criteria for practices and documentation requirements apply to all professional services activities, whether provided through contract or by in-house GSA/PBS staff.