A tree has fallen on a house, who should I call? 'Chelle Sonder December 05, 2017 20:02 Updated The Forestry Department can help you with fallen trees. You can call them at (530) 587-9432 or email firstname.lastname@example.org. Be sure to provide your name, address and phone number in your email. Related articles How do I get a guest card? How do I register a complaint about a neighbor? I have questions about tree removal and chipping. Comments 0 comments Please sign in to leave a comment.