The post office maintains a database of mailing addresses of properties that are vacant.  This is that way it should work, in a perfect world…

– While working their route, the letter carrier (being very familiar with the addresses on their route) notices that a property is vacant after x number of days.

– Having noticed the vacant property, the mail carrier completes a form that indicates that for the address (that they’ve entered on the form), they’ve concluded… the property has vacant for x number of days. The mail carrier submits that form to their local post office.

– The local Post Office acts on the form by sending it to whatever department within the post office that manages the master vacant addresses database.   It is the responsibility of that department to enter the vacant address into their master vacant addresses database, to flag the address as being vacant (as well as remove addresses from database). When this department flags the address as vacant, this gives an official notification to whomever may have interest; that sending mail to the addresses in this database is useless.  The mail carrier has identified that this address is vacant, so there is no need to mail to the address.  This is the entire function and reason for this post office’s master vacant addresses database.  There is no need mail to this address, since the address has been flagged as vacant by the local mail carrier.

– This master vacant addresses database, is only released by the post office once every 60 days.  This data is not available to the general public. We acquire the data through proprietary and perfect legal methods. 

– When the mail carrier notices that the property is now occupied…. in a perfect world, the mail carrier would again, send a communication (perhaps another form) to their local post office.  At this point the local post office, should be channeling that notification to whatever department within the post office managing this master vacant addresses database. It is the sole responsibility that department, to now remove the vacancy flag for that address, since it’s been indicated that the property is no longer vacant.

– If research leads to a property that is occupied, for whatever period of time, the reason for that lies entirely within the system that the post office has engaged; of effectively communicating the vacancy status from the mail carriers, and ultimately updating that status in the master vacant addresses database.

– Our objective in publishing our Post Office Vacant Addresses list, is to accurately provide the Vacant Addresses to customers within 10 days of the 60 day refresh of the entire master vacant addresses database.  Despite that it could appear that we are not updating our data properly… it’s far from that.  We are conveying 100%, of what’s in the master vacant addresses database, at the time we receive that periodic refresh.  If a property is occupied, even though it’s on our list… it is on our list, BECAUSE IT IS STILL FLAGGED AS VACANT BY THE POST OFFICE.

– In a perfect world, communication from the channels of mail carriers to whatever department within the post office managing the master vacant addresses database, would have accurately updated (added or removed) an address in the database.  We obviously have no control in the communication of these update processes at the post office.

– We too, are wholesalers, and when we encounter a property that’s vacant, we are in complete understanding that this will happen.  It should not be the majority, but this can occur.  We believe that the advantages of being privy to properties that are indeed vacant on a massive scale, as with this data, far outweigh the disadvantages of encountering an occupied property, when it’s flagged as vacant.  This is just our personal opinion.