Martin Executive Building - 1155 West Chestnut St. Owner operated. Deal directly with landlord and avoid management companies! Proudly serving Union clients for over 50 years! Brokers welcome! 2 Story Office Building. Ideal for small business... Located across from Union Main Post Office; 350 yards from Route 22 (Costco shopping center plaza); 1 mile from GSP; 5.3 miles from Union County Courthouse