TTD Headquarters

[Elanz]

Hey!
I have been googli'n around A LOT now, but i cant seem to find my answer, or the things im looking for.
just recently picked up ttd again, after having forgotten all about it since my childhood

now for my request and question:
How many stages of the headquarter upgrades are there?
and does anyone have pictures of all the stages?

[Chrill]

There are 5 stages:

Cottage
Cottage with fences
Small Concrete Building
Small office complex
Large office complex

No pictures, sorry

[Elanz]

aw, was hoping for more than 5 stages :/
then i dont really need pictures, because ive reached 'em all. thank you so much!