It appears that the underused housing tax (UHT) might apply to residential property owned by
- a partnership one of the partners of which is another partnership
- a trust where one or more of the beneficiaries of the trust is another trust or a partnership
- a corporation that is wholly-owned by a trustee who is neither a citizen nor permanent resident of Canada even if all of the beneficiaries of the trust are citizens or permanent residents
Alex Kerslake “Traps in the Underused Housing Tax: Tiered Ownership Structures” 12:4 Canadian Tax Focus (November 2022)