Address history is the least discussed and most consequential part of a background check. It is what tells the provider which county courts to search, and a search of the wrong counties returns a clean result with complete confidence. Almost every genuinely missed record traces back to this step rather than to the quality of the searching that followed.
What the trace does
A Social Security number trace queries credit header and other data sources for names and addresses associated with the number. It returns the identity picture: names used, including former names, and a history of addresses with approximate date ranges. That output is the map: the provider searches the county courts covering those addresses over the lookback period you bought. It is not itself a criminal search and it returns nothing about convictions, which surprises employers who see it listed as a search on the report.
Why it is the weak point
The trace reflects places where the person generated a financial or public record footprint. Somebody who lived somewhere without a lease, a utility account or credit activity in their own name may not surface that address at all. A young applicant, somebody recently arrived, or somebody who lived with family can therefore have a genuine gap. If a county never appears in the trace and the applicant does not mention it, no search is run there and the report says nothing at all about a place that might hold a record.
Ask the applicant, and compare
The practical answer is to collect a self-reported address history on the application and compare it against the trace. Where the two disagree, the difference is the interesting part: an address the applicant declared that the trace missed is a county worth adding, and an address the trace found that the applicant did not declare is a question worth asking. Doing this costs nothing and closes the largest hole in most screening programmes.
How many years, and the cost consequence
Seven years is the common lookback because it aligns with the FCRA's reporting restrictions on most non-conviction items, though convictions themselves have no federal age limit. The scope you buy is a choice: a wider address history means more counties, and each county is a separate search with its own access fee, so this is where the bill grows. A candidate settled in one county for a decade sits near the advertised entry price; one who has moved across three states does not, and no provider's headline rate reflects that.
Questions people ask about background check address history
Why does a background check need my address history?
Because criminal records are held by the courts covering where you lived. The address history is what tells the provider which county courts to search, and a county that never appears is never searched.
Does a Social Security number search find criminal records?
No. The trace returns names and addresses associated with the number, which is the map for the searching that follows. It contains no conviction information itself.
Can the trace miss an address?
Yes. It reflects where a financial or public record footprint was created, so somebody who lived somewhere without a lease, utility account or credit activity in their own name may not surface that address.
How many years of address history are searched?
Seven is the common convention, matching the FCRA's reporting limits on most non-conviction items. It is a scope you buy, and each additional county is a separate search with its own fee.