Vail Resorts continues to grow its empire with the announcement today that the Constellation Residences at Northstar in Lake Tahoe has joined the RockResorts family. The Constellation Residences are a ski-in/ski-out property that will now be adding 50 additional residences and new amenities thanks to the influx of Vail investments. Construction is slated to begin in spring 2014 and should take about three years. [Curbed Ski]