If there are tax benefits, that certainly helps and can add to the wealth building by freeing up more cash for more income-producing stuff.My opinion, of course, but I try to encourage my investors to be wealth-forward rather than tax-forward.

You can get good numbers residentially.Feel free to let me know if you have any questions on a specific area or property. 

How much free cash do you want per year?

The numbers tend to work out more favorably there, which can simplify hitting your investment targets.On the other hand, if you're leaning more towards appreciation and forced equity, Portland could be beneficial, especially with strategies like house hacking.

Feel free to shoot me a DM! 

If you go the assistance route there will be more inspections to qualify and the tenants will need to honor the HAP contract - but there is almost always more hand-holding involved.

I specialize in this market so if you have any questions, always feel free to reach out. 

Feel free to reach out if you have questions!

The numerator is the actual money remaining on hand on an annual basis, and the denominator is the total amount at the time of purchase of the property.

Unfortunately I do not think there are any free resources.