I don't think this rate of anomalies is unusually high, but I thought you should know the potential.

The land was bought by a trust where I am the beneficiary, spoke to the relevant officials and they agree with the anomaly however they have not done anything about it.

Sub-zero temperatures are almost anomalies now.

That may be an anomaly.

In my market, San Francisco, rents are very high (I average $3500/unit) and having a vacancy is an anomaly.

However, it's the first increase in foreclosures after 36 consecutive months of year-over-year decreases.According to ATTOM's report, four Florida cities have seen a notable change in foreclosure starts over the past three months, including: MiamiMay: 4 percent increaseJune: 35 percent increaseJuly: 29 percent increaseJacksonvilleMay: 22 percent increaseJune: 22 percent increaseJuly: 81 percent increaseOrlandoMay: 12 percent increaseJune: 22 percent increaseJuly: 41 percent increaseCape Coral-Fort MyersMay: 11 percent increaseJune: 64 percent increaseJuly: 59 percent increase"The increase in foreclosure starts is not just a one-month anomaly in many local markets given that July represented the third consecutive month with a year-over-year increase in 33 metro areas, including Los Angeles, Miami, Houston, Detroit, San Diego and Austin," says Daren Blomquist, senior vice president with ATTOM Data Solutions."

Either way, it's not an anomaly. 

Your concern about buying a property at much lower than the surrounding comps is a baseless fear.When doing a desk appraisal (or any appraisal really) or any type of market valuation, the professionals throw out price anomalies as something to be disregarded.  

The Bay Area is a bit of an anomaly at this point, so be sure to run the numbers based on your own risk tolerance and your own ability to take a hit based on a speculative play.

my experience with with pools is:if this basically lower end properties were their are few pools  B/C the cost to build one today would be half the price of the home it almost had negative value Not sure what an appraiser would do in those instances since it would be an anomaly basically..