mudguard:
I'm sure my father quoted something like buying a house around 1980 for $70k earning $7k as a teacher. But that salary sounds very low.
Maybe he was a primary school teacher. They now earn the same as secondary teachers but that has only been in the last two decades. Before that they earned only about 60% of a secondary teacher's salary.
P.S. The average wage in 1979 was ~$8,200 so $7,000 sounds low.
For comparison, my parent's house in Lower Hutt
1962 ~5,000 pounds = $10,000
1982 $45,000 sale an increase of 7.8% p.a.
2018 $455,000 capital value for rating a further increase of 6.6% p.a.
Overall house price increase 7.1% p.a.
Whereas the average wage increased 1.8% p.a. during the same period from about $1,600 to $64,000.