Monster House is an inventive film with stunning visuals and an a-OK plot, mixed with witty dialogue and effective jumpscares that would totally piss the pants of anyone pre-puberty. What I love most from this well-paced film is just how perfect the voice actors are in synced with their characters. Also deserving of praise is the effective storytelling of mature themes (grief, loss, death, maturity) in a way children can understand while still having fun.
However, the storytelling lacks that wow factor which would've easily made Monster House distinguishable and memorable (in comparison to animation classics).