As the Sydney University club could not field an under 19 team, Baulkham Hills played in their stead. The team had a successful season, eventually finishing in fourth place after losing the first semi-final to Pennant Hills.
As this team was an amalgamation of players from the Hawks and the Kookabuuras, a new emblem – the Falcons – was born. The team played in a maroon jersey with gold stripes, similar to the jersey of the Subiaco club playing in the WAFL. In the early 80’s Baulkham Hills played in the SDSFA at their home ground at the Kellyville Postal Institute Club, then later moved to Charles McLaughlin Reserve.
This period of the club was not a successful one and both the First and Reserve Grade teams went long periods without wins. In 1989, the club fielded a senior team competing in the Sydney Football Association (Division 2) competition. The team met with moderate success in their first year, finishing fourth in a seven team competition, being knocked out of the finals race in the first semi-final.
In 1990 the club had gathered enough support from ex-junior players and disenchanted players from other clubs to field teams in the Sydney Football Association (SFA) Division 1 competition in the first grade, reserve grade and under 20 competitions. 1990 was a successful season, with the first grade team eventually losing the Grand Final to Balmain at Erskineville Oval and Doug Scholz winning the Snow Medal for the best and fairest player in the competition. In the following year the Falcons turned the tables on Balmain and won their first senior premiership in a keenly fought match at Roger Sheeran Oval. By 1993 the club had outgrown the SFA and was promoted to the Sydney Football League.
The Falcons endured a tough couple of years in 1993 and 1994 before making the preliminary final in 1995. It was in 1995 that the club produced its first Phelan Medallist in ruckman Graham Jones. Between 1996 and 1999 the club struggled, never finishing higher than fifth on the ladder. One high point for the club during these lean years was Jarrod Crosby winning the club’s second Phelan Medal in 1998. Before the 2000 season began, the club struck up a partnership with the West Coast Eagles and was renamed the East Coast Eagles.