San Diego-based H.G. Fenton Co. has acquired four National City industrial and office developments totaling 610,000 square feet for an undisclosed price. The seller was locally based Collins Development Corp.

According to H.G. Fenton, the acquisition included Southland Industrial Park on West 35th Street, with a total 218,733 square feet; Southport Industrial Park at Mile of Cars Way, with 12 buildings totaling 297,533 square feet; Southport Commercial Park, with seven buildings totaling 59,995 square feet; and Southport Office Park, with eight buildings totaling 33,984 square feet at Hoover Avenue and Mile of Cars Way.

All of the properties were built in the early to mid-1970s, although several of the buildings have been renovated in recent years. A company statement said this is H.G. Fenton’s third large acquisition in the past 12 months, following its purchase of Metroplex Business Center in Miramar and Sabre Springs Business Center in Carmel Mountain Ranch.

H.G. Fenton owns and manages a portfolio that includes more than 4 million square feet of office and industrial properties, with 13 apartment communities totaling more than 3,100 units.