KentuckyOffice NAI Isaac helps call center operation find home in Lexington August 14, 2018 Share on Facebook Share on Twitter Share on LinkedIn Share via email Bruce Isaac, senior vice president with NAI Isaac, represented Valvoline in the closing of a 15,426-square-foot office lease at 120 Prosperous Place in Lexington, Kentucky. Valvoline will use the space for a call center. Matt Stone and Nathan Dilly with SVN Stone represented the landlord in this transaction.