How close is 600 feet?

       p. 16, Sec. 3.1. Approvals, Permits, and other items. (b). …“In no event shall any Project structure be located closer than 600 feet from the nearest residence…(excluding…(iii) any residence owned or otherwise controlled by Developer…” What does “otherwise controlled” mean?
      Same section….”…acknowledging the complexities of determining specific measuring points, Developer may deviate from such 600 feet by no more than 3%.” from “nearest residence”. So 600 feet could be 582 feet. If Developer controls ‘x’ number of nearest residences, how close can structures move towards property line from current locations?