Hi there, Did you ever come up with a solution for your trees? I would probably talk to a local arborist. They may be the best equipped to tell you what the trees can withstand and what would keep them healthy.

I agree that it would be worth talking with an arborist. You asked a similar question for the house we designed. Trees have a critical root zone which is as wide as the tree's canopy. 30' canopy - 30' critical root zone. For Austin, we cannot disturb the ground that is half the diameter of the critical root zone of each protected tree (per local code.) To protect the tree on our house we placed piers outside of the trees critical root zone and then spanned between the piers with beams. A good architect should be able to help you with this as well. We always design around trees. It makes for an interesting project! Good luck!

2 year old post