Turnkey Property Tax Question

[Keith Stempel]

I am evaluating different turnkey providers and running my own pro-forma numbers. What I'm trying to get a handle on is what market value the property tax is based off - the pre-rehab value the provider paid or the post-rehab value the investor would pay. 

One thing that seems consistent across several I've looked at is it seems to me the property tax assumptions most of them are using seem too low, which makes me think they are basing it off prior tax years (when the property was not rehabbed). So if I buy it and the property value is much higher, I need to bake into my assumptions a higher tax. 

If so, this seems misleading on the providers estimated numbers.