It is possible for a husband and wife to have separate residences. Do you have documentation showing the condo as your residence for the two years?
Where does your driver's license show you live? Is the car registration and insurance showing the condo address? Where are you registered to vote? What is your mailing address on most mail? Where are your personal bills sent? Are your doctors, accountants, attorneys, dentists and other professionals local to the condo? You must make sure you have an air tight proof of residency.
If you can provide the residency then you will be able to exclude $250,000 of gain (not $500, 000 since it is not the primary residence of the wife). You do not have to do a MFS return to get this benefit.
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