This is a common and effective strategy for long-term, generational wealth building.

But for an LLC that is lending or investing in deeds, is this appropriate as a general LLC policy might protect against injury or property damage, company autos, etc. – none of which is applicable when the LLC strictly engages in paper transactions without employees and a physical office. 

Additionally it is unlikely to run long enough to really have an effect on the humidity.

It's been pretty effective for us when we've used it 

I found out it could be upwards of $4500 to clean depending on the extent of damage!

What is the most effective way to estimate rents for multifamily rentals?

I've never done bandit signs but I've heard they are effective.

Definitely better than the mind-numbing effect of other social media sites. 

Doing the title search beforehand would have at least given you a chance to either walk and not damage your reputation or get it figured out before bringing in the cash buyer.

However we  don't see pics of the kitchen or the extent of water damage.