Fence Blew Down between two houses, two different property mgmt

[Cali Skier]

Hi easy question, may not be an easy answer.  I am still new at this, I own house A and am renting it out, another property mgmt company runs house B.  The fence between blew over, posts are on my side (I get the ugly side), but I assume we both split the cost.  My tenants want it fixed fast.  I believe I found the PMC for the other property.  How does this transaction work?