This subchapter applies to the underwriting, Market Analysis, appraisal, Environmental Site Assessment, Direct Loan, and Scope and Cost Review standards employed by the Department. This subchapter provides rules for the underwriting review of an affordable housing Development's financial feasibility and economic viability that ensures the most efficient allocation of resources while promoting and preserving the public interest in ensuring the long-term health of an awarded Application and the Department's portfolio. In addition, this subchapter guides staff in making recommendations to the Executive Director and the Board to help ensure procedural consistency in the determination of Development feasibility (Texas Government Code §§2306.081(c), 2306.185, and 2306.6710(d)). Due to the unique characteristics of each Development, the interpretation of the rules and guidelines described in this subchapter is subject to the discretion of the Department and final determination by the Board.