Teslag said:
The percentage of rental units/homes owned is irrelevant to this discussion, one being about 1st time buyers needing to be able to buy a home, not rent one. If institutional investors owned 1% of single family homes, and those accounted for 100% of the single family rentals it wouldn't affect a 1st time buyer at all.
It absolutely applies here. Nationally, 1-3% of SFH's are owned by Institutional investors. However, locally, that number can climb in metro areas where the institutional investors are buying up homes to rent and that increase will have local effects on first time home buyers. Both as first time home buyers that are currently paying the profit margin for the institution they are renting from, and then again when they are trying to purchase a house against a corporation with cheaper capital.
Even if you believe there are better or more effective ways to help first time home buyers, I think not allowing corporations to own single family housing will be nothing but a benefit overtime. If institutions want to buy multi-family and rent, then have at it. But single family housing is meant for single families.
Finally, if your entire argument has been "Institutions don't own enough of this market for it to influence house prices" then one could reason that barring them from ownership wouldn't have any influence on house prices either.