In 1984 the club opted to switch to Saturday football and joined the West Midlands (Regional) League, initially in Division Two, and won the league championship at the first attempt. In the 1985–86 season, the Harriers gained a second consecutive championship, winning the Division One title to gain a place in the Premier Division. The club spent eight seasons in the Premier Division, with a best finish of third place in the 1988–89 season, the same year in which the Harriers achieved their best ever run in the FA Vase, reaching the third round. In 1994 the club was selected to be one of the founder members of the Midland Football Alliance. The last ever Halesowen Harriers match being a home game with Causeway United on 28 April 2003.
The Harriers' first home ground was a park pitch in Bartley Green, followed by a similar pitch in Kingstanding. In 1969 the club began a ground share arrangement at the home of Halesowen Town. Coinciding with the switch from Sunday to Saturday play in 1984, the club opened a new ground at Park Road in Halesowen, which had a capacity of 4,000, with 350 seats. The highest attendance registered at the ground was 672 for a friendly against Wolverhampton Wanderers in 1988.
Powerleague took over the ground in 2003 and transformed it into a 5 a side complex, this was subsequently taken over by Soccer Ltd in 2019 and has undergone total renovation. Into the Soccer Zone complex that can be seen today.