The area now known as Placitas was originally the site of several Indian pueblos located near water sources at the north end of the Sandia Mountains. Spanish settlers moved to the Placitas area from what is known today as Algodones, Bernalillo and San Felipe. They were agrarian people of Spanish and Native American heritage. The Spanish authorities, as a precondition for a land grant, were required to farm and raise livestock. There were sources of water locally available, but it was necessary to construct an irrigation system to get the water to the areas to be cultivated. The grant of land which was provided to and claimed by the original 21 families is now known as the San Antonio de las Huertas Grant, an extensive area stretching from the "Las Placitas" historic marker on NM Highway 165, to a high point on the Sandia Mountains, to a place east of what is known today as The Diamond Tail Ranch, to the boundaries of San Felipe and Santa Ana Indian lands.