@Jason Munns, are you looking to buy investment properties in the U.S. or Canada?

Your ability to turn around a property with an 11% cap rate is a pretty strong selling point.

Does anyone have strategy recommendations for purchasing multi-family properties with zero-low downpayments?

I use a property manager there. 

If you want to stay in your house, then your only option would be to leverage equity which will probably be in the 8-10% interest rate range.Not knowing the entire situation, I think you could consider downsizing and then using the proceeds to buy a 2-4 unit property and start making $40-75K right away with still no debt. 

We don't have the option of going off the gold standard again. 

In your opinion what do you think is the best property to start with?

I’ve owned this property for four years, and this is the first complaint of this nature I’ve encountered, so I’m curious if, by leaving it as is, I could go extended periods without facing clog issues.Any advice is much appreciated!

Why not save more money and look at higher value properties?

Since you have more time than capital right now, consider side hustles like Airbnb co-hosting, property management for other investors, or even leveraging your nursing background to consult for mid-term rental owners.