A couple on $50k pa each save $50k for a deposit on a $350k home and borrow $300k.
Between them pay $740 per week will pay off the loan completely in 10 years.
Of course it would be smarter to take out the loan for say 30 years, repayments would be $375 per week which is less than rent and then just pay as much into the mortgage as you can.
With a bit of discipline if it's achievable but hey once you get to 60% equity it's pretty cruisey from there