Q.How close to corner of house can the Oak Leaf red Holly be safely planted?
Have a block wall build which will swing out about 10 ft. From corner of house. Will this pocket be adequate for planting the above mentioned tree.? Will roots likely damage house or wall? Thank you,
Marty

Not sure I understand completely, best I can determine, you want to plant in a 10 foot square with a garden wall on one side and a house wall/foundation on one other side, and open on the other?
Oak leaf holly is not a huge tree so if you plant it 5 feet away from the structures it should be okay and not damage wall or foundation. But give it as much space as you can.
Average Landscape Size:
Fast growing; reaches 14 ft. tall, 8 ft. wide.
https://www.gardeningknowhow.com/ornamental/shrubs/holly/oak-leaf-holly-information.htm