Were you on the deed prior to his passing? If so, half the cost basis "steps up" to half the fair market value (FMV) on the date of death. If you live in a community property state (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington or Wisconsin), the whole cost basis steps on the DOD.
Alaska, Florida, Kentucky, South Dakota, and Tennessee, have passed elective Community
Property Laws.
Then, as others have said, you almost certainly qualify for the home sale exclusion.
