How to find/estimate total housing units in my county

[Jack Medford]

Anyone know how to find year over year stats of how many total housing units are in a specific region? I'd like to get this info for my county or city, whichever is easier to obtain. I'd preferably like to split housing units into single family vs condo vs multi-family, but I'll take what I can get. 

I was able to find some of this via factfinder.census.gov, but it only goes back to 2009.