Primary residence exemption on two properties

[Thomas Hart]

So the situation is my wife and I both owned houses before we got married and I believe we both would meet for two out of the last five year resident test. Can we both use 250 K exemption on our individual properties that we are now selling? If we file married but filing separately? Is there anyway anyone else knows to use 500,000 exemption on two properties? I have consulted professional tax advice and I believe I am being given incorrect information