"Rodger Whitlock" replied:

What I wonder about is why your friend moved into a place with a
no-fence rule, presumably well aware of it, and then immediately
sets to work to circumvent it? It's like someone buying property
next to a farm for the amenity value (oooh, see the cowsies!) and
then whining about the smell of manure.
---
As all the neighbouring houses have an assortment of bushes and trees
in their front gardens, my friend was not aware and indeed not told of the
no-fence rule prior to moving in. Quite a few also have white painted,
low ranch style fencing.
Instead of sending a 'smart Alec' reply to my posting, you could have had
the courtesy to suggest alternative plants.

Bella