I'm trying to think what I would do next time with these slim margins. 

the cause of the issue needs to be addressed as well as a complete repair of the results of the leak. if it has been 3 weeks, mold most likely is not going to be an issue. most black mold will start to grow within 48 hours and certainly by 3 weeks would be very evident. there are 18 different species of black mold and only 2 of them are toxic. the chances of getting the toxic kind are slim, yes, but still possible. a reputable company such as servepro  certainly could leave you with no worries in the end

One slight hiccup, and that slim profit is wiped out, leading into NEGATIVE equity!

Pickings are slim around here...Does anyone have any recent success stories out of the Bay Area?  

The chances of ever using them is actually very slim.

By the time you take out expenses and such it is pretty slim margins.  

The chance of an agent closing a short sale is slim and this fee gives some compensation for that.

The likelihood that the listing agent has the particular buyer under contract for representation on the property you just listed is slim.

The numbers are pretty slim.

Needless to say, that a deal that looks fine at 10% EV, looks very slim at 15% EV and barely breaks even if expenses or exit cap rate is increased.The last 3 years were within 10% threshold though and that trend may continue.Hence my question: is 10% a "new norm" or should I throw it out and use at least 13% in my underwriting?