On a more common event list, would be hail, flooding and wind damage (trees esp.). 

Not sure how common or widespread that is, but it has happened.   

Quote from @Nathan Gesner: Unkempt lawns, trashy or broken down vehicles, mattresses and trash on empty lots, boarded up houses, bars on windows, dealers and hookers on the corners, the lack of stores or gas stations, occupied properties are dilapidated, etc.Or when Google maps shows stuff like this: If those are drug zombies, as they appear to be, that's an "F" class neighborhood where nobody pays rent and structure burnouts are common.

You're facing a common investor challenge: learning from experience (and sometimes mistakes).

Three, the tenants will be easier to manage because there won’t be any bickering or disputes between them and other tenants in the building which is common with multifamily properties. 

There was something in it for both of us.You have to find some sort of common ground or gain a lot of trust to show how serious you are about this.

If they are on the deed, the property is owned as 'tenants in common'.Is there a tenants in common agreement?

What is more common is someone saying they have everything, calling it "easy" and it's all just BS sales pitch.

If there are clear signs of negligence (kid throws down, paper towels, food, fats) then you can get the invoice from the plumber with the notes and present it to them. 

While more development did happen over the last few years from development projects started in 2021 and 2022 when rates were lower and developers could outlast supply chain issues, the upcoming supply is expected to drop again, as we will discuss later on, with the relatively sharp rise in interest rates that has dried up investment capital due to the fear in the market, sellers opting to hold out on their land and or properties until cap rates and interest rates subside again as is expected in the coming years, as well as banks being cautious to lend on real estate due to this sharp rise putting many projects that were started in 2021 suffer greatly from a 7x increase in rates over the following 40 months that had adjustable rates or 5-year terms which is very common in larger multifamily investing.