so my understanding is that home prices go up because homes are investments that can earn money, and one reason homes are investments is that you can rent them out. how much does landlording contribute to rising home costs, and how much of that contribution is from smaller landlords as opposed to banks and wall street? is "small landlords drive up home costs" a defensible argument i can make?
I'll keep looking for more data, but here's a study on how an increase in AirBnB listings leads to a rise in rent and home prices. https://papers.ssrn.com/sol3/papers.cfm?abstract_id=3006832