Park your vehicle a couple houses down and walk by the house a couple times and see what you notice.  

Turnkey investments to a foreign national who I'm assuming had no idea of the property or that location.

Is this a credit union, local bank, national bank?

National Association of Residential Property Managers

I've found cash flowing properties (but barely) in East LA  (Boyle Heights, city terrace and east LA)  - and more so in South LA - communities such as Vernon and Huntington Park.

Narpm.org  is the National Association of Residential Property Managers.  

The house is usually extremely dirty after one year - with the same air filter installed -(after I show them how to change it at the lease signing, and it is spelled out to change four times per year), weeds in the yard ( too hard to pull them out as they become big I assume), many times- cars parked half on the grass ( we always have two car driveways and garages - and it is spelled out in the lease not to do this), etc.

I currently own a rental property in Overland Park, Kansas.

what to do with it? have seen homes on similar size lots go for around 150k. the land is just sitting there for several years going on decades. the shrubs seem to be well on their way into growing into trees; is there...

I hear they've turned some of the old factories and warehouses into condos and offices and cleaned up the park along the canal.There use to be some rough spots (by the old silos) when I lived in MTL ... but that was a long time ago (before your time).