BURLINGTON, MASS. — Spear Street Capital has purchased The Center at Corporate Drive, a four-building office campus located at 10, 25, 30 and 35 Corporate Drive in Burlington. The Davis Companies, in a joint venture with Principal Real Estate Investors, sold the 487,000-square-foot campus for an undisclosed price. At the time of sale, the property was 94 percent leased. The sellers originally purchased the property in September and implemented a $8 million capital improvement plan at the property. Along with architectural firm CBT, the joint venture renovated the park into a Class A office campus featuring a state-of-the-arts amenities hub and extensive outdoor green space and patio area. On-site amenities include a 7,850-square-foot cafeteria with flexible conference space; a 2,100-square-foot fitness center with yoga room, new showers and locker facilities; and a 4,500-square-foot outdoor patio with green space and numerous collaboration areas with Wi-Fi connectivity.