As posted on another thread with the same question:
There is no site where you can get a LIVE stream. There are many sites that show streams from TV shows. Most of them only come online a few hours after the show has been aired on TV. My advice would be to sign up for their RSS feed so that you can be notified when a new episode is online.
A House specific one, that I like is http://houseepisodefull.com
The latest episode is always on the top and there are multiple mirrors.