House for sure... though it's more costly (electric, security, it goes on and on etc...), you don't have to worry about the rain or cold...and cancelling due to weather... and having patrons walkthrough a house amongst the actors instead of observing them from a wagon (though some places do a good haunt this way), has a more threatening factor for patrons. For most, having the security of the wagon does help the scare factor and can lead to "observation" unless the actors hop onto the wagon and are interactive.







