Princeton Riverside Real Estate Summary June 2018 July 6, 2018 by limey admin June 2018: 4 home sold in Riverside last month. The average days on market was 31. The average sold price for a home in the Riverside section of Princeton was $1,089,750. Click to see which homes sold in Princeton’s Riverside section or click to see Princeton Riverside homes for sale. *Source: TREND, information deemed reliable but not guaranteed.