You have no way of knowing.Henry brings up an excellent point about going into a nursing home where she'll be paying some/all of those fees with Medicare. 

say you find a solid property in a low cost market for $200K and you buy it.between down payment, closing costs, rent ready / spruce up costs, and lease-up costs, you're probably going to need at least 50-65K in cash. 

Memphis is a market where BRRRR is possible, but with rates going up again, it's not a great idea.

Indianapolis for example has been a Hot market for the last 3-4 years since COVID blew up home prices back in 2019. 

Iowa you may not assign contracts for compensation attornies wont close those.. same in South Carolina..

Why sell for 90% of the value after closing costs, minus taxes.

I have yet to see an underwriting that holds up to my scrutiny that shows that adding a hands off single ADU in single family zoned area that projects a return that justifies the effort and risk.

Then your sale will be for $450K ish (you do subtract closing costs). 

Do you by chance have it written anywhere to close all doors and windows? 

Unfortunately I was not able to put much away for retirement most of my life so I was thinking about attempting to buy 4 rental units over the next 4 years with the hopes of building up something that could generate income in 5 to 7 years to supplement my retirement at 68.