So your personal home has little to no ROE.  

RoE is about 75% for 5 years.   

If you home is appreciating roughly 5% per year, that is actually another 10% ROE, given your current debt to value ratio.  

ROE - return on equity may be a better measure for you.  

Your lender is going to tell you what your payments will look like if you accessed your equity (selling, HELOC, refinance, etc.) so you can calculate your ROI, ROE, CoC, etc.

I deducted for (this is copied directly from the security deposit return): $18.75 45 minutes of yard waste clean up, including excessive dog waste, overturned plants, piles of dirt from tenants plants $150 Six (6) hours of clean up within the unit for excessive filth and grime, excessive holes in walls requiring patching and painting$400 Eight (8) bags of trash left on the premises, this does not include the excessive trash picked up during and created in the cleaning process$89.07 Electric utilities from Sept. 11, 2018, through Oct. 31, 2018   5. $23.82 Gas utilities from Sept. 20, 2018 through Oct. 31, 2018This left $118.36 left in the security deposit, to return to Tenant 1.

Housing regulations fall under the Fair Housing Act which is federal law, it can not be over turned by a state.Service dogs and emotional support dogs are two different animals. :) A service dog must be trained to do just one thing to improve the quality of life there are no registries and they do not have to wear vests.  

For short projects the time between contract date and funding could be around 25% of the project's duration...so the ROE calculation is heavily influenced by what dates you assume.Taxes shields are arguably something you can model, but the gov-mint can change them and their effect is influenced by future purchases.

If you can get a higher ROE somewhere else and you want the cash flow now then it could be a good strategy.

Mine are right at 6% when I sell and 6-6.5% when I buy.My older sellers tend to compare with savings rates and their ROE vs current mortgage rates so 6ish% is still attractive to them.