This collection of caches has nothing to do with the Church Micro series in the UK. Given that the Australian 2021 census indicates that No Religion and Jedi Knight are still the fastest increasing classifications of the optional religion question "What is the person's religion?" it is not surprising that there is surfeit of empty churches that have been repurposed.

Owen Church of Christ
1906, former Church of Christ, Owen, Wakefield District, South Australia. This was the first church building erected in the town of Owen. The first meeting of that congregation was held in a private house in 1881. The present building was opened in 1906 within the township itself. A porch was added in 1920. Closed the building is now a private residence.
Look at the window above the porch. Based on the shape of the window select the final locaiton of the nearby cache.
Round - S34° 16.226 E138° 32.807
Diamond - S34° 16.807 E138° 32.226