The Department of Housing and Urban Development (HUD) is seeking a contractor to deliver a virtual, instructor-led training program on FHA Section 221(d)(4) multifamily underwriting and affordable housing finance, focusing on new construction and substantial rehabilitation. The training will cover complex financing structures, including Low-Income Housing Tax Credits and tax-exempt bonds, and must include practical exercises, case studies, and a final knowledge assessment. The program is expected to run approximately six to eight weeks, with two live virtual sessions per week, each lasting about two hours. This is a sources sought notice for market research purposes only, not a solicitation, and no budget amount is specified. The location for performance is virtual, as the training is delivered online to HUD participants.