The Letterbox cache is NOT at the above coordinates, even tho there is an Attribute for "In Front Yard (with Permission)" listed, I repeat, it is NOT at the house on the corner of Pacific Highway and Locketts Crossing Road.
Not much has changed in the area in the intervening years, but the 'establishment' that you will be looking for has changed tho. 
The Letterbox Hybrid can be found at: S32º 1x.xxx' E152º 1y.yyy'
Where x= [Hallidays Point].[Failford][Wahroonga][Forster]
And y= [Adamstown].[Buladelah][Nabiac][Jesmond]
As with all Letterbox Hybrids there is a specific stamp (self-inking, no ink pad in the cache) that is to remain in the cache. You may use this stamp to mark your own Letterboxing Logbook, and of course use your own unique stamp in the cache log book. This is not compulsory.
This cache has 'the establishments' specific blessing, so PLEASE don't abuse their hospitality - DON'T park in their driveway.
CONGRATULATIONS to TeamSenz for their FTF
EDIT at 2025. If you view my current Profile Page, you should pick up on a 'not-so-subtle hint', which if you think about it, would nudge you to use a specific link below the Hint, which will give you the first hand knowledge of where the Letterbox is hiding!! Cheers