The Hamilton Co. said Thursday it is buying 134-unit apartment complex in Boston’s South End.

The company will purchase the property for $52 million from Boston Land Development. Hamilton Co., owned by Harold Brown, has been on a buying spree of late, snapping up $300 million in properties over the last three years.

The South End apartment building is located within the Northeastern University campus at 650 Columbus Ave., near the South End’s border with Roxbury. The parcel also includes 33 condominiums and a 141-car parking garage.

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“These well-developed, managed and maintained buildings will continue to meet the moderate priced housing needs of the South End residents and Northeastern University’s student population,” said Carl A. Valeri, president of Hamilton Co. “We will be providing the same high standard of care to which our residents are familiar.”

The Hamilton Co., based in Allston, owns and operates more than 5,000 apartments and 3 million square feet of commercial property across eastern Massachusetts.