Guardians of the Source (Gargoyles #1) - Tamsin Mori

A crumbling mansionA magical sourceA living gargoyleCallen’s Dad has always been secretive of his past but when the family have to move into his childhood home, the last thing Callen expects is a boarded-up mansion covered in gargoyles. It''s enormous, the doors are nailed shut, the gardens are overgrown... and long-forgotten magic is returning. When a disgruntled gargoyle wakes up in his presence, Callen must befriend Zariel and earn her trust before it’s too late. A dark threat is growing in the shadows and only a Gargoyle Guardian can stop it. "Magic is neither good, nor bad - it simply multiplies the dreams you feed it. Be careful what you wish for..."