[sokoloff]

When that property is sold, from whom will the displaced tenant now rent? Market rents are set by supply and demand, just like most goods.

More supply of rental property? Rents go down so that landlords aren't stuck with vacancies. More demand for rental property? Rents go up so landlords can maximize their profits.

[user5994461]

From the new landlord who bought the place, supposing they didn't buy to occupy it themselves.

FYI: Selling a property doesn't take it off the market. It's just owned by a new owner, who's gonna either live in or rent it just like before.