RFPs permitting alternate proposals must require the base proposal to include all features considered essential to a sound and adequate building design. Any alternates to be included in the specifications should represent significant amounts of work in relation to the base proposal, and they should generally be structured as “add” or “deduct” alternates. When accurate cost estimates are not available, a base proposal may be required for the minimum acceptable project, with “add” alternates for desired materials or equipment. When budget constraints exist, a base proposal may be required for the plans and specifications as stated, with “deduct” alternates for desired materials or equipment to be used to bring proposals back within budget. RFP documents calling for alternates must clearly state that the Postal Service reserves the right to accept or reject any and all alternate prices, as may be determined by the contracting officer to be in the Postal Service’s interests.
