The sale of the 205-unit community is the largest real estate transaction to close in Rochester this year. : Timberland Partners has finalized the acquisition of Preserve on Maine, a 205-unit upscale community in Rochester, Minn. Harbor Bay Real Estate Advisors sold the property. The asset traded for $38.5 million, Olmstead County records show. The deal represents the largest real estate transaction in the city this year, according to Post Bulletin. Located on 4 acres at 4010 Maine Ave. SE., the community encompasses two three-story buildings completed in 2017.