Neighborly thought, but ... Bees are wild creatures, and are not concerned by human political or private boundaries. Other than that, if the location is public property, you can't place your hives there. If the location belongs to someone else, pay them, take them a bottle of wine, give them a pie, or a jar of your honey. Whatever, they see as fair! If you're lucky, and it's your property, sit down and enjoy watching the bees fly off to the lavender while you enjoy that fat pocketbook, glass of wine, and piece of pie.
On the other hand, if lavender honey tastes anything like those sachet packets my mother used to put in her dainties drawer ... I think I'll stick with clover or buckwheat.