The fastest time to build a three-level house of cards is 11.37 seconds, achieved by Binita Agrawal (Nepal), in Birgunj, Parsa, Nepal, on 23 September 2011.

This record was broken on the Guinness World Record Challengers site (Challengers’ tag: agrawalbinita ): http://challengers.guinnessworldrecords.com/challenges/6-fastest-time-to-build-a-three-level-house-of-cards