When a taxpayer dies, the tax basis of the property is the value of the property on the date of death. As such, if property is sold for this date-of-death value, there is no gain or loss.
Debt secured by a principal residence or second home to the extent of the excess of fair market value over acquisition debt. An interest deduction is generally allowed for home equity debt up to $100,000 ($50,000 if married filing separately).