Finding good tenants is very simple and in your situation you can allow him as much time as necessary for you to find a replacement tenant without having any vacancy.That approach could result in a lawsuit, or at least a complaint filed with the Department of Housing and Urban Development (HUD), Department of Justice (DOJ), or the Office for Civil Rights (OCR).

Remember a service animal falls under the ADA with the Dept of Justice. 

You are right , so it is better to purchase one 6 unit building  but looking at the cash flow  for 6 units  at Burbank, ROI of $345 per month from 6 apt it is not much  , very little  cash flow. on the other hand   6 flat in Justice  cash flow is  -$352 so I think the price is too  high, am I  correct?

They will never get "justice" in this situation.  

If you're investing in real estate, unless it is value add forced appreciation, invest for cash flow, and any appreciation beyond the rate of inflation is just icing on the cake.

@Sherry Justice These are all great questions and depends on the market.

“Our legislation would not only strengthen disclosure requirements and protections for homebuyers, but also help expose bad actors and facilitate their prosecution.”John Henneberger, co-director of the Texas Low Income Housing Information Service said: “These bills will help consumers be more informed about risky wrap-around mortgages and better protected from unscrupulous lenders.”Trish McAllister, executive director of the Texas Access to Justice Commission, added that the legislation will help families stay in their homes.

Its hard to believe this type of thing can't be tracked and the crooks wouldn't be brought to justice. 

Tax savings is just icing.

To the extent that you wish to trust the demographic data entered by the loan originator, Home Mortgage Disclosure Act data is publicly available so social justice groups can sue lenders for unlawful discrimination if the data indicates that is warranted (Wells Fargo etc).CFPB has an interactive website that lets you play with the data.If there is something unique about properties in the area you want to buy in that you want to get in front of, nothing will beat picking up the phone and calling agents in the area.