Application of section

This section shall only apply to a principal residence purchased by the taxpayer on or after April 9, 2008 , and before May 1, 2010 .

In the case of any taxpayer who enters into a written binding contract before May 1, 2010 , to close on the purchase of a principal residence before July 1, 2010 , and who purchases such residence before October 1, 2010 , paragraph (1) shall be applied by substituting “ October 1, 2010 ” for “ May 1, 2010 ”.

In the case of any individual who serves on qualified official extended duty service (as defined in section 121(d)(9)(C)(i)) outside the United States for at least 90 days during the period beginning after December 31, 2008 , and ending before May 1, 2010 , and, if married, such individual’s spouse—

(A) paragraphs (1) and (2) shall each be applied by substituting “ May 1, 2011 ” for “ May 1, 2010 ”, and

(B) paragraph (2) shall be applied by substituting “ July 1, 2011 ” for “ July 1, 2010 ”, and for “ October 1, 2010 ”.