The Henry Tang illegal basement controversy (Chinese: 唐英年大宅僭建風波) was an event that began on 13 February 2012 over the unapproved basement extensions of two adjoining residences in Kowloon Tong owned by Henry Tang, a 2012 Hong Kong Chief Executive election candidate. Despite the impact on Tang's credibility, the scandal did not prevent his nomination on 20 February that year.