Princeton Riverside Real Estate Summary December January 3, 2018 by limey admin December 2017: 4 homes sold in Riverside last month. The average days on market was 11. The average sold price for a home in the Riverside section of Princeton was $769,000. 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.