GRANDVILLE — A 20-year-old mall in southwestern Kent County could potentially turn into a mixed-use “mini-city,” or be repositioned for a sale.

The uncertain future of Rivertown Crossings Mall in Grandville has cast a pall over West Michigan’s retail real estate market, where demand from new entrants is strong but places to put them remain in short supply.

With the retail sector undergoing seismic shifts to its traditional bricks-and-mortar business model, large malls and shopping centers continue to seek out new ways to remain relevant in the future.