Small Multifamily Inventory Numbers

[Cole Britting]

Is there any database or resource that shows the inventory numbers for small multifamily in an area? I'm trying to narrow down potential places to house hack, and although I could go SFR and rent by the room, I'd much rather go to a market with a good amount of small multifamily.

If there isn't a good database for this, any tips for researching specific areas?

Thanks!