To date, I believe, around 100 homesites have been taken which leaves around 250 more up for the taking.
“La Estancia de Cafayate includes approximately 1500 Acres of land with spectacular mountain views. The land brings together a balance between architecture, recreation and agriculture with magnificent beauty.
Architect Jack Zehren has carefully woven the homesites of La Estancia into the existing landforms, creating a community that is integrally linked to its place. Each of the 350 homesites will border open space, whether vineyard, golf course, field, or woodland.”
http://www.laestanciadecafayate.com/english.php