I've stayed on the sidelines with this debate so far but can't help myself here.
You wouldn't save 400K because you would own an asset that after 25 years would be worth more than the 450K you paid for it. By renting, you would have nothing to show for your 320K after 25 years.
In fact, your house would only need to increase in value by ~100K in those 25 years to break even with your renting example once you factor in the value of the asset. As house prices generally follow CPI over the long term (money loses value over time thanks to inflation), this is likely to occur.
And that's not even getting into paying off your mortgage quicker to lower the interest paid or dealing with landlords and inspections every 3 months.
I would have 400k in an account to show for it that didn't go into paying just the repayments.... where as you would have to sell your asset because its in bricks and morter... dont forget, owning a home has a lot more overheads than renting over that 25years and your at the mercy of the banks to increase your interest rate by a couple of percent or even go back to the interest rate of the 80's of 14-18%.





