The U.S. Department of Energys (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Building Technologies Office (BTO) is issuing this Funding Opportunity Announcement (FOA) titled Bipartisan Infrastructure Law (BIL): Resilient and Efficient Codes Implementation (RECI). The current FOA represents the second installment in the RECI initiative, which maintains the same broad format, flexibility, and crosscutting areas of interest, while emphasizing and prioritizing specific gaps, needs, and opportunities to support building energy codes identified as focal points through the first RECI FOA and continued stakeholder engagement. The activities to be funded under the FOA support the BIL, as well as a broader government-wide approach to advance building codes and support their successful implementation. The primary focus centers around updating to more efficient building energy codes that save money for American homes and businesses, reduce greenhouse gas (GHG) emissions, and encourage more resilient buildings. This FOA includes one topic area broadly focused on the cost-effective implementation of updated energy codes.