Fortune International Group and Château Group have signed a utility agreement allowing construction to proceed on the St. Regis Residences, a two-towered residential development planned at 18801 Collins Avenue in Sunny Isles Beach. According to county records, the utility agreement, signed on March 15, includes details of the utilities provided to the development, which will feature 336 residential units, a 6,226-square-foot full-service restaurant, and 3,970 square feet of office space. Arquitectonica is the architect alongside São Paulo-based designer Patricia Anastassiadis for interiors, and EDSA is the landscape architect.