This collection of caches has nothing to do with the Church Micro series in the UK. Given that the Australian 2016 census indicates that No Religion and Jedi Knight are 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.
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This beautiful stone building was once the Coromandel Valley Methodist Church built in 1859.
To find the cache calculate the following:
X is the number of horizontal slots in the rectangular dark vent high in the wall above the lower entrance roof. This can be seen from the footpath either side of the building (but not standing directly in front)
Y is the number on the letterbox.
A = X + Y + 3
B = Y + 1
C = Y
D = X + Y
E = A
F = X + 1
Cache is located at s35 01.ABC e138 37.DEF
Checksum: A + B + C + D + E + F = 36
The final location is a nice short walk in Frank Smith park, just down the road.