Big red building just before Kaukapakapa - what is it?

[Toaster]

Aye? How is this "just before" cowcop? The sculptures in the Plant Centre at the lookout are closer than Gibbs's sculptures.
We've gone from outside Kaukapakapa to just South of West Coast Rd/Woodcocks

Exactly right. Gibbs place is much further north of Kaukapakapa than the OP seems to suggest. The sculpture gardens have had a recent revamp so may have somthing like that there just South of the lookout. Haven't been North in ages... will have to go for a ride and have a look.

[Berries]

Its the huge storage facility where all the broken and returned stuff from The Warehouse goes to be repackaged and sold at the Two Dollar Shops

i think you have that the wrong way round.