The Archbishop of Sydney, Reverend Dr Peter Jensen, will be among the guests who will celebrate the church's 25th anniversary this coming Sunday, September 21.

Dr Jensen will speak at both church services at 9.30am and 7pm.

The church's first minister, Reverend John Saddington, will travel from the state's north coast to attend the morning service.

The present minister, Reverend Gary Haddon, has been there for two years.

``I reckon 25 is a good fun number to celebrate,'' Mr Haddon said.

``I remember as a very average cricketer, if ever I reached 25 not out I would enjoy the moment like it was a Test century.''

St Marys Magdalene Anglican Church sold its assistant minister's house in St Marys and a block of land in Erskine Park in 1982 to buy six blocks of land on Coonawarra Drive, St Clair, to build a new church.

Members of the parish did much of the work involved in building on the site the minister's house, which was completed the following year to hold its first service.

``The suburbs of St Clair and Erskine Park were just kicking off at this time and they thought that the area needed the presence of a church,'' Mr Haddon said.

``Mr Saddington and his wife moved their furniture around so that they could hold the Sunday services in their lounge room.

``Sunday School took place in the kitchen.''

The weekly service grew to 36 members within the first six months.

The church building eventually opened on the site in late 1986.

In 1988, it separated from St Mary Magdalene to become its own parish.

About 80 churchgoers now worship at St Clair Anglican Church every Sunday.

``We have a real spread, from newborn babies to elderly couples,'' Mr Haddon said.

``It reflects the diverse community we live in.

``We're going through a renewed growth spurt. The church has has its ups and downs, just like any other.

``There's been a lot of hard work.

``We look forward to what God has in store for us in the next 25 years.''