Chapter 8. Unsafe Structures. § 6–801. Unsafe structure or excavation – public safety. § 6–802. Unsafe structure or excavation — Survey of premises. [Repealed] § 6–803. Unsafe structure or excavation -- Failure of owner to make safe. § 6–804. Dangerous nuisances; notice to abate; failure to abate; life-or-health threatening condition on vacant lot. § 6–805. Cost of work performed by Mayor assessed against property; violation of §§ 6-801 to 6-803; costs of correcting life-or-health threatening condition. § 6–806. Payment of cost assessed against property; sale of property for nonpayment. § 6–807. Service of notice. § 6–808. Occupation of unsafe structure.