House Party was just a name they used for an event they held in January. Much in the same vein the WWE uses names like WrestleMania, No Way Out, etc. It's obviously called "House Party" because it was always held in the ECW Arena.
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November 16, 1996--
November to Remember: The Gangstas (New Jack & Mustafa Saed) b The Eliminators (John Kronus & Perry Saturn) and Sabu & Rob Van Dam in a 3-WAY
January 31, 1998--
Hostile City Showdown: Rob Van Dam & Sabu b The Dudley Boyz (Buh Buh & DVon) and The Gangstinators (John Kronus & New Jack) and Sandman & Tommy Dreamer in a 4-WAY
July 10, 1998--ECW: Tommy Dreamer & Sandman & Spike Dudley & New Jack b Jack Victory & The Dudley Boys (Bubba Ray & D-Von & Big Dick Dudley)
April 16, 2000--Wrestlepalooza: Tommy Dreamer & Sandman & New Jack b Steve Corino & Jack Victory & Yoshihiro Tajiri in a NO HOLDS BARRED STREET FIGHT
--Results from
www.obsessedwithwrestling.com