Subchapter V-B. Other Housing Provider Actions During Tenancies. § 42–3505.51. Access by housing provider to dwelling unit. § 42–3505.52. Housing provider duty to mitigate damages after breach of the rental agreement by tenant. § 42–3505.53. Notice of tenant's intent to vacate upon the expiration of an initial lease term. § 42–3505.54. Notice of tenant's intent to vacate after the expiration of the signed lease term, renewal or extension term. § 42–3505.55. Housing provider's consent before subletting.