Freehold waterfront condominium cluster along Upper Serangoon/Estuary Crescent in District 26 around Sengkang and Punggol boundaries, generally cited at addresses along Estuary Walk and Estuary Crescent, adjacent to Serangoon Reservoir and Punggol Waterway with park connectors and reservoir sights; nearby retail and groceries include Compass One, Sengkang Riverside Park sellers, https://hectordtacd.bloggosite.com/44681399/estuary-condo-880-26