Marc Realty Capital has just made its third offer to buy the 448-unit River City condo building located on the Chicago River’s South Branch in the South Loop, according to Crain’s. The developer has tried to buy the distinctive Bertrand Goldberg-designed condo complex twice within the past year without luck.

The current $100 million offer is 22 percent more than its first buyout attempt of $81.47 million and approximately 10 percent higher than its second attempt of $92.2 million, according to the report.

More than half of the building occupants agreed to sell after each of those offers — 62 percent after the first offer and about 65 percent after the second offer. The developer will need 75 percent of building’s condo owners to agree to sell in order to buy the entire building, according to the report.

Many of the condo owners are investors, as opposed to people who actually live in the building. Investors seem more interested in selling than non-investor owners, according to the Crain’s report.

If Marc Realty Capital is successful in buying the River City building, the condos will likely be converted to apartments.