Leave the owners alone, when and if they are ready to sell, they will, and there will be plenty of lots to choose from on the MLS.I have no statistics to back this up, but in my casual observation after our fire is about 1/3 of the owners rebuilt their homes (some built similar, some duplicated exactly--big mistake, and some built better/nicer/larger homes). 

Of course, there's no perfect right or wrong answer, it will be different for all but make sure you do what is comfortable for you and what fits your goals. 

My ultimate goal is to acquire enough real estate to achieve financial freedom, allowing me to travel, provide a comfortable life for my family, and teach my children about discipline, financial literacy, and the wealth-building potential of real estate.I’m here to learn, share, and connect with others who share this passion.

We choose not to. 

I have owned so many properties in NY that were long-term rentals and it is renter-friendly, but if you choose correctly, you won't really ever care.Meetups are a great way to add to podcasts and books.

Get out of your comfort zone.

Whether you choose to run screening before you show the unit to them is a personal choice. 

When most US investors are faced with the prospect of converting (lots of) USD to JPY, to buy properties in cash, that in depreciate in value (when contemplating resale) and face decreasing rents over time... you need something else to justify choosing Japan over the US.

Get out of your comfort zone.

Question: why would one choose to build an ADU when existing structures sell for less than the cost of development?