Rio Casa, located along Hougang Avenue 7, comprises seven blocks of 286 apartment and maisonette units. It has a site area of 396,234 sq ft (36,811.1 sqm). Under the Master Plan 2014, the site is zoned for residential use with a gross plot ratio of 2.8. This works out to a maximum permissible gross floor area of about 1.1 million square feet.