The easiest place to plant a street tree is into an existing empty tree pit or a grass verge. If there is a hard surface where you’d like to have a tree planted, your council MAY be willing to plant here. Some councils will create a new tree pit, but they may ask you for a contribution.
Some locations may be unsuitable for a tree. This may be as a result of the proximity of underground services (cables/pipes), a nearby lamp-post or telephone pole, telecoms boxes, drop kerbs, pedestrian crossings, or pavements that are simply too narrow to fit a tree.