If you want to grow your own significant property portfolio, you need to own properties that provide wealth-producing rates of returns.
This means using one or all of the ways listed below:
1)buying a property below its intrinsic value, in an area that outperforms the average over the long term
2) one to which you can add value so you can create some capital growth. This could be through renovations, refurbishment or redevelopment.
This will bring long term sustainable growth