while you may have lived in both every day, the IRS says only one can be primary. they make the rules and interpreting them incorrectly is costly.
what address did you use to register to vote? what address in on your driver's license? what address is on your tax return. While you may state you used both homes, the facts and circumstances on these documents are not unique ---- only once address or the other can be on those documents.
Really suggest seeing a tax accountant and would be worth the few dollars it'll cost to do this correctly.
clearly one of the homes gets the exclusion.
