In the United States, "Wines with “estate bottled” designations must: a) also designate an appellation of origin or an AVA, and both the vineyards and the winery must be located there; b) the grapes must come from vineyards owned or controlled by the winery; and c) the wine must have been produced, from crush to bottle, in a continuous process without leaving the winery’s premises."
-
WINE LABEL FAQS: A QUICK SUMMARY OF LABEL DESIGNATION RULES" by David E. Stoll