Weston Urban, the developer behind San Antonio's proposed $160 million minor-league ballpark, is looking to expand its downtown footprint again — this time by bidding on the low-income Robert E. Lee Apartments. In August, San Antonio-based Weston Urban offered $4.35 million to purchase the 72-unit complex, according to a letter the Texas Department of Housing and Community Affairs sent to Robert E. Lee residents. The bid is $2 million over the property's appraised value.