Hire an arborists to assess the trees with whatever is remaining; street view images. Also an appraisal based on arborists opinion. Mature trees are very pricey in legal damages. as essentially irreplaceable.

I could never imagine this scenario. But I have a Tree Addendum I had drafted specifically because I don’t want my tenants to even lay a hand on the trees. I’m more worried by negligent tree trimming that kills a tree. But it sets value to each tree too. Something like “$1000 per inch diameter at 18” above ground.” Sorry about this situation you’re in.