8:30 – 10:00 a.m., the Community Housing and Improvement Program holds a seminar, “Challenging Your Building’s Tax Assessment," with property tax expert Paul Korngold to explain how assessments are determined and how to challenge an assessment at the Association of the Bar of the City of New York. Free for members and $50 for non-members. To register call 212-838-7442, e-mail RSVP@chipnyc.org, or click here.
1:00 p.m., the City Council’s Community Development committee, chaired by Albert Vann, holds a hearing on how foreclosures affect community development. At the Hearing Room, 250 Broadway, 14th floor.
9:00 a.m. – 8:00 p.m., the American Institute of Architects opens a new exhibit called “Make it Work: Engineering Possibilities,” with new projects by Arup, Foster + Partners, Zaha Hadid, Herzog & de Meuron and others, focusing on the engineers as much as the architects. Runs until April 25 at the Center for Architecture, 536 LaGuardia Place.