A person who wholesales without the relevant experience is endangering themselves, and all of the people they're trying to do business with--it's a recipe for disaster if you don't know what you're doing.I feel like I say this to new aspiring investors everyday: If you are a beginner, do not attempt to syndicate wholesale flip a 300 unit portfolio for your first deal.

If it were for something bigger like police presents /arrest/endangering the other tenants then yes I would and have evicted solely on that lease violation.

Here in Maine you can only give 7 day TOL if they're late, destroying the place, endangering, and you have to have witnesses the prove all but the late rent, so we usually give a 30 day "no reason" TOL if someone is not working out .... if they've paid last month's rent, we have to tack that extra period of time through which they're paid up to the 30 day notice.

for example we've had to do endangered species studies and archielogical studies in order to build.

For me, an emergency is defined as anything that will endanger the health or safety of others, or anything that will endanger the property if not dealt with immediately.

See how that endangers the tenant Buyer's agreement with you?

ESA or not, the animal can’t endanger or disturb others excessively.

It's technically legal in Washington State but most real estate agents won't provide dual agency for obvious liability reasons but I always ask when submitting an offer through the MLS, although I never want to endanger the agent or request favorability in any way. 

An endangered species..2.  

Substantial Violation is defined by CRS 13-40-107.5 (3), which basically says that if actions of the tenant endanger the property, other tenants, neighbors, is a drug related felony, or is an offense that would result in incarceration of 180 days or more, or is a public nuisance as declared by the health department and occurs near or on the property, or on the common/parking areas of the property.