Hoping for something I can do once or twice a year, and easy enough a tenant can do it (think flush down toilet).1.

I would suggest that as an avenue you look into as the lawyer had us discuss items that we would not have otherwise surrounding entering and exiting the deal, first right of refusal and other items that a lawyer trained in such matters would know to flush out.

Also, most newer garage pours in my area leave a ~3cm drop just inside or outside the door threshold so the driveway isn't flush with the garage floor.

While working on the property I flushed an upstairs toilet and noticed the downstairs restroom drains gurgle.

A toilet getting fixed by a phone book plumber would be a BIG cost.Almost always the toilet over flooding is a tenant issue they tried to flush too much down or fill in the blank, I let them know what they did wrong.

📝 Below are specific systems & processes I have used for managing my long term rental portfolio in the Omaha, Nebraska market:Zillow & Apartments.com to list properties for rent & receive applicationsPre screening prospects with a few baseline questions before scheduling showings to weed out non qualified parties & tire kickersApartments.com (previously Cozy) for management platform, receiving rental payments, & accountingInputting expenses for each property each month Separate bank account for holding tenant depositsEscrowing insurance & property taxes in monthly paymentLockbox to allow contractors access during rehabHVAC maintenance contract for service twice a yearGutter cleaning company scheduled once a yearLeave on agreements with utility companies for all propertiesAutomatic late fees applied after rent due dateInforming tenants to email all non emergency repair requests & include images if possibleContacting contractor about a needed repair & having them get in touch with the tenant directly for schedulingPaying contractors promptly and thanking them for their good serviceMailing 2 tenant tip letters a year incorporating visuals for various items such as winter preventative maintenance, what not to flush down the toilet, reminder to clean lint trap from dryer, etc.

You might be flushing money at the duplex.

If you are absolutely flush with cash and want to chase the highest returns, you might be better off looking at a completely different asset class. 

I am planning on sending a HVAC person just to be sure and ask him to take the temp readings to validate functioning of the AC.The other laundry list items has been -A door that will not lock completely - changed the door.Toilet flush handle that was not working completely - got that fixed.3 squeaky closet doors - got them oiled.Window blinds that lets too much light in - told them to get their own blinds.This is all alone in last 30 days.l, before that there were no issues.

Most items said we would address the issue and were simple fixes (e.g. trim trees, fill in cracks, address door binding to close flush, etc.).