SFR marketed as a Duplex

[Jay Helms]

Hello BP'ers! I'm interested in a property that is being marketed on the MLS as a duplex, but doing my own research, the county records have it labeled as a SFR.

Questions:

• If I purchase the property, what's involved in getting it legally qualified as a MF?
• With tenants already in place (and will be there through the purchase), what problems does this pose in getting the property qualified as a MF?
• Has anyone ran across this situation and made the process of making the property MF a part of the sellers responsibility as part of the negations (good / bad)?

If it varies by city / county, this is in Pensacola, FL and any local knowledge/experience is certainly appreciated.