DALLAS — Billingsley Co. has refinanced 9111 Cypress Waters Boulevard, a newly built, 223,319-square-foot office building that Billingsley developed in Dallas. Trey Morsbach and Jim Curtin of HFF placed the 15-year loan through Lincoln Financial Group on behalf of the borrower, Billingsley. The building is located within the 1,000-acre Cypress Waters development, which upon completion will feature 8 million square feet of office space, 45,000 square feet of retail space and up to 10,000 multifamily units. 9111 Cypress Waters, which houses 7-Eleven’s North American headquarters, was 94 percent leased at the time of the placement of the loan. Proceeds were used to take out a construction loan.