Key legal question
Whether the gains from selling the condominium units were taxable as self-employed income or exempt private capital gains.
Extracted holding
The overall activity amounted to self-employed real estate trading, not mere private asset management; the gains were taxable.
Extracted reasoning
The court relied on the planned subdivision, real partition, construction, repeated sales, financing structure, professional background and the close link to the couple's construction business. The totality of circumstances showed an activity aimed at profit.