I think that you are asking for a clear cut comp of a certain area, and that is almost impossible in this market.
And you cannot depend on any web-ste such as Trulia or Zillow which are not propietary websites, to do this.
You have to put in data specific to the property and area to get the most accurate comp, not just Biscayne Point. And there are short sales, bank owned properties ad reular sales to account for . The age of the closed sales is the most important for an appraisal and financing, as they take into account declining values.
As a realtor (or an appraiser which I am not!) we can use our system to get an accurate snapshot of a comp, at least those that were sold via the multiple listing service. Most of the bank owned and short sales are sold this way. We cannot include public aution for example, but that is a small percentage of the closed sales.
I hope this answers your question, and let me know if you need further assistance.
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