I'm looking for a list of street trees that at full height are less than 25 feet tall (to avoid power lines) and that are not that wide.
(perhaps less than 12 feet wide, to avoid SEPTA right of way).
Answer
I am attaching a list of recommended street trees that the Philadelphia Parks Department puts out. There should be some trees on this list that meet your needs. Look especially at trees recommended for narrow streets.
Hope this helps.