S25-0081_sole-source-declaration.pdf

This document is a sole source declaration from the Fraunhofer Institute for Building Physics IBP to the U.S. Army Corps of Engineers. The letter certifies that Fraunhofer IBP and cleverbridge are the sole authorized providers of WUFI® software, which is a specialized tool for simulating moisture and heat behavior in building materials. The document is dated April 4, 2025, and is addressed to the Office of the CIO/G-6, supporting a special notice for a sole source procurement of software to support USACE building design and analysis activities across multiple districts.

The sole source justification emphasizes WUFI's unique capabilities as the leading software for hygrothermal simulations, essential for evaluating building envelope performance. The anticipated procurement is for a one-year base period, classified under NAICS code 513210 (Software Publishers), with Cleverbridge, Inc. as the intended vendor. The procurement will support the Resilient Building Policy implementation, with the government determining that only Cleverbridge can provide the required software access.