I’ve run across this before in Juno Beach as well as Singer Island and Jupiter Island. Palm Beach County has an oridinance on the books which has been endorsed by the municipalities which states among many other items:
E. Use of Window Treatments
To prevent interior lights from illuminating the beach, window treatment shall be required on all windows visible from the beach within jurisdictional boundaries. Blackout draperies or shadescreens are preferred. Alternatively or additionally, window tint may be applied to beachfront windows. The turning out of all unnecessary interior lights during the nesting season is strongly encouraged.
Thus, if you can see the beach, then the sea turtles can see your lights on and the county requires you to have window tinting, drapes or blinds and to use them.
New construction within 300′ of the shoreline is required to have tinting on the windows.
