Rotorua mum Paula Gold was 36 when she had her first child, John, 14 weeks ago.
With housing and cost of living pressures, Ms Gold and her partner, Roger Stoddart, decided working full-time and chipping away at the mortgage before having a baby was sensible.
"It was easier to start a little later and get ahead a bit, and be more financially stable," she said.
While some studies claim the biologically best time to have a child is the mid to late-20s, modern pressures and opportunities mean the age has shifted dramatically in one generation.
Until the early 1980s, the 20-24 age group was by far the most common age group for first births in New Zealand. Now, the age bracket ranks fourth, with those 30-34 responsible for the most births.