The plant in the images you have provided is not a crapemyrtle, but what I believe is a mulberry. If there was a crapemyrtle there at one time it has been completely taken over by the mulberry. If it is truly a mulberry I would recommend having it removed. It can grow very fast, become quite large, be messy, and potentially cause problems to the house. I would not worry about the leaf spot that is showing up on the leaves, that is a minor issue that won't affect the plant health much.

For additional assistance you can also contact the Tulsa County OSU Extension Office.

I didn’t mean Crepe Myrtle,  I meant to say Rose of Sharon!  Are you sure it’s a Mulberry?  It has never produced berries.  It has gotten very large. 

Definitely not a Rose-of-Sharon either. I can't be 100% sure what it is from the pictures, but still leaning toward mulberry. Mulberries are male and female so only the female will produce fruit; this may be a male if it is a mulberry. One characteristic of white mulberry, which is common around the state, is it should have a milky white sap if you cut into the branches. For a positive ID I would suggest taking some samples into your county extension office. Take several cuttings from various branches that are at least 6 to 10 inches long with the leaves attached. If possible, take the cuttings just prior to taking them to the extension office and keep the cut ends in water or wet paper towels so they are fresh.