The Robertson Opus: Unity Street, D9/Singapore River, Apartment, Riverside Property Pte Ltd, 999 yrs from 01/07/1841, Uncompleted, 348 units, 1BR-4BR, Buyer Profile: Singaporean 83.2%, PR 13.3%, Foreigner 3.5%, Company 0.0%, Avg sale price: $3,359 psf.