Princeton Riverside Real Estate Summary July 2019 August 7, 2019 by limey admin July 2019: 3 homes sold in Riverside last month. The average days on market was 126. The average sold price for a home in the Riverside section of Princeton was 1,175,000. 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.