Princeton Riverside Real Estate Summary July 2018 August 2, 2018 by limey admin July 2018: 1 home sold in Riverside last month. The average days on market was 7. The average sold price for a home in the Riverside section of Princeton was $1,015,000. 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.