In Portland, we must give 90 days notice to change rent/terms or renew lease.

You (the owner) must reside in the house for 2 out of the 5 years prior to sale to get the sale tax free.Unfortunately you're also on the bubble for a 1031 without some clarification of intent. 

You must live in one of the units.

To protect yourself - have strong qualifications renters must meet.

You will run into the "I mailed it the post office must have lost it"Ultimately you want their rent payment in your bank account.

That must have been for the whole county or something!

It must be the entity that does the 1031 exchange. 

My plan was to sell within 3 to 5 months after the rehab was done, but the house draws no interest, at least that is what I can read.Most of the people that visit the house say they love the rehab, but they buy elsewhere; others say that the master suit is too small, but none, not one offer has come through.I appreciate your suggestion on the price. 

The rebate must be listed on the CD by the buyers agent.Rebates are legal in most, but not all states:  https://www.justice.gov/atr/rebates

All the money you spend before the property is rent-ready adds to the basis for the property and must be depreciated.