SIERRA VISTA — Residents of recreational vehicles who have been ordered to remove their homes from their properties because they’re in violation of their neighborhood’s zoning filed a lawsuit against the city on Tuesday in Cochise County Superior Court.

The 30-page complaint, filed by the Institute For Justice, a non-profit organization that represents homeowners and small business owners, was promised in July after their clients, Amanda Root and Grandy and Georgia Montgomery, received a letter from the city’s code enforcement division that their RVs were in violation of zoning ordinances.