Bob is notified by the city public housing authority on May 3, 2023, that his apartment building is going to be condemned as part of a commercial development project. On June 1, 2023, Stella offers to buy the building from Bob. Bob sells the building to Stella on June 30, 2023. Condemnation occurs on September 1, 2023, and Stella receives the condemnation proceeds from the city. Both Bob and Stella are calendar year taxpayers.

a. What is the earliest date on which Bob can dispose of the building and qualify for involuntary conversion treatment?

b. Does the sale to Stella qualify as an involuntary conversion? Why or why not?

c. What is the latest date on which Stella can acquire qualifying replacement property and qualify for postponement of the realized gain?

d. What type of property will be qualifying replacement property?