UNION CITY, CALIF. — Precision Manufacturing LLC has exercised its purchase option on a 52,881-square-foot industrial building in Union City. The company, which has occupied the building since 2003, acquired the property for $3.86 million or approximately $73 per square foot. Located at 33233 Central Ave., the property features 5,000 square feet of office space, sprinklers, a yard area, a rail spur and dock- and grade-level loading. The seller was Hass Brothers. Jay Hagglund and Paul Beckwith of NAI BT Commercial represented both parties in the transaction.