Developer Already Lied To Our Faces

I posted this in r/treelaw first....

There was a row of six very mature Douglas firs along our property line that we have in common with a property a developer is leveling.
Four of the trees are on our property, some by less than a foot. Two of the trees were on that property by also just a foot or so.

A member of my household spoke with the property developer 3 days ago. At that time the property developer assured us that they had no plans to cut the two trees down for at least a year, and that those trees probably were not within the building area. Now, Monday they've been cut down. I'm pretty sure that they did it in an unsafe way too even though the trees were extremely close to the house on this property.

They also have ripped a bush out of our side of the line, but I have no way to prove this since they ripped the entire root system out and it was growing on rocks. Pretty sure it was 90 % on our side. It was at least 6 feet across flowering quince.

Now I'm concerned that they are going to dig out and damage the roots of the trees that are still standing on our property. Possibly to try to kill them. And I'm concerned that they will trim off all of the branches on their side of the line, which means trimming like half of the tree off because the branches are pretty much all overhanging their property. The trunk is so close to the property line they would be taking the entire branches of half the tree.

Is there any protection for this?