We have a charging system for people who properly request, but if they just stay we really do not know until cleaners arrive (usually 30-60 mins post check out). 

If you proceed with the project, you should go through the proper permitting process.

To choose the best rental strategy, research local regulations, lifestyle preferences, market demand, and property features.

I have already seen the new forms/addendums that will be used here in Arizona, the common one for this will be the Seller Compensation Addendum.The one thing that might happen in your discount buyer agent scenario is you might get a buyers agent who agrees to a lower commission and then the listing agent is offering a co-broke that is higher than he agreed to, well now that buyers agent will only be able to get paid the lower amount he agreed to and the listing agent will keep the remainder, so listing agents could end up getting paid more.As far as your question on what to pay an agent, I view it similarly to hiring an attorney, there are discount attorney's and they might be okay for some people in some circumstances, or if you know the proper procedures and deadlines then maybe you do it on your own without an attorney.

:Class A Properties:Cashflow vs Appreciation: Typically, 3-5 years for positive cashflow, but you get highest relative rent & value appreciation.Vacancy Est: Historically 10%, 5% the more recent norm.Tenant Pool: Majority will have FICO scores of 680+, zero evictions in last 7 years.Class B Properties:Cashflow vs Appreciation: Typically, decent amount of relative rent & value appreciation.Vacancy Est: Historically 10%, 5% should be applied only if proper research done to support.Tenant Pool: Majority will have FICO scores of 620-680, some blemishes, but should have no evictions in last 5 yearsClass C Properties:Cashflow vs Appreciation: Typically, high cashflow and at the lower end of relative rent & value appreciation.

Emphasize that if they are experiencing illness, its your priority to make sure their health is not affected and the only way you can do that is if they vacate the unit so you can properly and thoroughly mitigate the issueThis is  shakedown.....Damage to their shoes etc.... that's what renters insurance is for... not your problem.Mold remediation....90% of that stuff is a frickin scam.

can you house hack, or does your lifestyle / family situation not permit it? 

Maybe you can calculate proper lawn watering costs and give the tenant that amount as an allowance.

Also come up with exit contingencies, if you have a balloon due IN X years and for some reason you can't pay the balloon off at the proper time.

Does the garage have proper firewall protection and heat alarms for whoever is sleeping there?