The Lake Worth Beach and Municipal Casino is slated for demolition early next year. City officials called the casino building unsafe and plan to demolish it next spring. The building’s tenants have been told to leave by March 31, which will eliminate a swathe of local lore and longtime businesses. The current plan to revitalize the 19-acre beach parcel would have developer Greater Bay Group replace the casino building with a two-story, 49,000-square-foot commercial center containing 7,200 square feet of retail space, a ballroom or conference area and restaurants. Peter Willard, a partner in the Greater Bay Group, says that although a lawsuit has stalled the project, estimated to cost between $12 million and $15 million, his company continues to work toward the redevelopment.