The reason is they are trying to promote homeownership through sales of their properties and well, to be frank, prevent exactly what you are trying to do.  

The one lease at a time rule is explicitly designed to prevent you from renting by the room.

US District Judge John Barker, who was appointed by then-President Donald Trump to the court in the Eastern District of Texas, stopped short of issuing a preliminary injunction, but said he expected the US Centers for Disease Control and Prevention to respect his ruling and withdraw the moratorium.https://www.cnn.com/2021/02/25...Wonder how this will play out...

I really do want to retain you as a tenant (I think you are a great person), but I need to enforce the rules on the lease that we signed to ensure protection of my property and prevent any issues with neighbors.Trash and recycling disposalThere was trash and recycling (including a mattress) around the garage in the alleyway.

Also prevents the other property using it as a dog run, kid play area, trampoline, etc.  

Is my boyfriend and my "cut" preventing her reaping more cash flow?

Immediately clean up any sign of mold or mildew growth to prevent damage to the building.

Most condos have rules that prevent you from renting out your unit as an airbnb. 

What astounds me is that breaking the chain of infection  is a time proven way to prevent its spread and one of the bedrocks of medicine.  

Pound for pound slightly more expensive material because it is a "modified polymer" for the reason of preventing shrinkage.