“They found that banning investors from buying and converting housing to rentals worked in one sense: The share of investor-owned rental properties in affected neighborhoods fell, and the number of properties bought by first-time homebuyers increased.
On the other hand, however, these new homeowners tended to be richer than the renters they were replacing, and the costs of rental housing increased overall.
“The ban has successfully increased middle-income households’ access to homeownership, at the expense of buy-to-let investors. However, the policy also drove up rents in affected neighborhoods, thereby damaging housing affordability for individuals reliant on private rental housing, undermining some of the intentions of the law,” write researchers in the study published on SSRN.”