Yeah, I lived in a double brick 2 storey terrace house in NSW, and it was difficult to control the temperature without spending a lot of money.

Well, as one of the end houses anyway. For the terrace houses sandwiched between the others, they have the benefit of having very little surface area exposed to the elements

I always assumed the verticality of terrace houses would allow for evaporative coolers to work, but I never did get a chance to try.