Capital Gains Tax on Inherited Real Estate

Inheriting real estate in the Aspen area often comes with a piece of good news buried in the paperwork: the stepped-up basis rule. Heirs frequently assume they are inheriting the same tax exposure the original owner carried, decades of appreciation on a property bought for a fraction of its current value, when in fact the tax basis usually resets to the property's value at the date of death. That reset changes the entire calculation for what happens if the heir later sells.

When real estate passes through inheritance, its basis is generally adjusted to fair market value as of the date of death, rather than carrying forward the decedent's original purchase price. For a property that has appreciated substantially over a long holding period, common for Aspen real estate bought decades ago, this step-up can erase most or all of the capital gain the original owner would have faced, effectively resetting the tax clock for the heir.

An heir who sells shortly after inheriting typically faces little or no capital gains tax, since the sale price is close to the stepped-up basis. An heir who holds the property for years before selling faces tax only on the appreciation that occurred after the date of death, calculated against the stepped-up basis rather than against what the original owner paid. This is a meaningfully smaller gain in most cases than the built-in appreciation that existed before inheritance.

Getting the date-of-death value documented properly, through a qualified appraisal or a comparable market analysis prepared close to that date, matters more than it might seem, since a poorly supported valuation can be challenged later and a weak record makes it harder to substantiate the stepped-up basis if the return is ever reviewed.

Property owned jointly between spouses, versus property held as separate or community property, can receive different treatment on the step-up, with community property states in some cases stepping up the full value on the first spouse's death rather than only half. This distinction matters most for out-of-state heirs of Colorado property or Colorado heirs of property held elsewhere, and it is worth confirming with an estate or tax advisor rather than assuming a single rule applies universally.

An Aspen property inherited by several siblings or family members as tenants in common often needs to be sold simply because the co-owners have different plans for the asset, different financial needs, or disagree about ongoing maintenance and carrying costs. Each heir's share of the stepped-up basis and any post-inheritance appreciation is generally calculated proportionally, and a sale that involves a 1031 exchange for co-owners who want to continue investing, alongside a straight cash-out for others, requires structuring the transaction correctly from the outset.

An heir who decides to hold the inherited property as a rental or investment, rather than selling immediately, can use a 1031 exchange on any post-inheritance appreciation the same as any other investment property owner, deferring that gain by rolling proceeds into a qualifying replacement property. This is most relevant for an heir who does not want to keep the specific inherited asset, a condo-hotel unit requiring active management, for instance, but wants to preserve the investment position and deferred tax status by exchanging into something else.

An heir who inherited alongside siblings and wants to exchange into a passive DST placement rather than actively managing a replacement property has that option as well, provided the exchanged share reflects only their own portion of the inherited asset and the transaction is structured accordingly from the start.