Q: I live in a neighborhood where the front lawns are required to be Bermuda grass.

A: Zoysia is marginally more aggressive than bermuda.

For example, twenty years ago my neighbor had table-top sized patch of zoysia in his bermuda lawn. Now it is 15 ft in diameter. An expansion rate of less than a foot per year is not much to worry about when the two grasses meet at a property line. They could easily be kept apart with a narrow brick or pine-straw strip between lawns.