Most, if not all, sprays would be harmful in some way to some other plant or to the ground itself. Better not to risk it. If it is 'common ground' I would hesitate to spray anything unless and until each and every other person agrees.
May I ask why one cannot pull the weeds adjacent to their own property? It seems the safest thing to do. Is there someone or some agency that needs to grant approval?
I forgot to ask...
what city/state/country are you in?