1. U.S. Green Building Council. (2021). LEED v4.1 Building Design and Construction Reference Guide. Washington, DC: U.S. Green Building Council. See section "LT Credit: Surrounding Density and Diverse Uses," which details the requirements for Option 2: Diverse Uses, and lists categories of qualifying uses, including "Food Retail" and "Services."
2. U.S. Green Building Council. (2014). LEED v4 for Homes Design and Construction Reference Guide. Washington, DC: U.S. Green Building Council. See "LT Credit 2: Surrounding Density and Diverse Uses," which specifies that a project can earn points by being located within a 1/2-mile walking distance of qualifying diverse uses. An on-site retail establishment would qualify as one of these uses.
3. Krygiel, E., & Nies, B. (2016). Green Building: Principles and Practices in Residential Construction. Cengage Learning. Chapter 3, "The Site and the Building," discusses LEED site-related credits, explaining that integrating uses like retail into a residential project is a key strategy for achieving points for proximity to community resources.