(b) Where there are no applicable building, housing, or health codes, maintain the roofs, windows, doors, floors, steps, porches, exterior walls, foundations, and all other structural components in good repair and capable of resisting normal forces and loads and the plumbing in reasonable working condition. The landlord, at commencement of the tenancy, must ensure that screens are installed in a reasonable condition. Thereafter, the landlord must repair damage to screens once annually, when necessary, until termination of the rental agreement.
The landlord is not required to maintain a mobile home or other structure owned by the tenant. The landlord's obligations under this subsection may be altered or modified in writing with respect to a single-family home or duplex.