Question juridique clé
Whether gains from later sales of co-ownership shares constituted taxable income from professional real estate trading under direct federal tax law.
Solution extraite
The later sales were part of private asset management, not professional real estate trading.
Motifs extraits
The taxpayer mainly concluded one long-term purchase-option agreement and granted necessary rights; she did not actively participate in development, planning, or construction, bore no financing risk, and the later sales were merely staged execution of that agreement.