Subtitle 4Nonconforming Structures § 18-401. Application of subtitle. § 18-402. Continuation. § 18-403. Expansion of structure. § 18-404. Repairs and alterations. § 18-405. Restoration of damaged structures. § 18-406. Relocation. 18-407 to 18-410. {Reserved} § 18-411. Exceptions – Administrative bulk adjustments. § 18-412. Exceptions – Multi-family structures. § 18-413. Structures in Hospital Campus District.