(1) APPLICATION OF SECTION. This section applies to any nonresidential tenancy if there is no contrary provision in writing signed by both parties and to all residential tenancies. An agreement to waive the requirements of this section in a residential tenancy, including an agreement in a rental agreement, is void. Nothing in this section is intended to affect rights and duties arising under other provisions of the statutes.(2) DUTY OF LANDLORD. (a) Except for repairs made necessary by the negligence of, or improper use of the premises by, the tenant, the landlord has a duty to do all of the following: 1. Keep in a reasonable state of repair portions of the premises over which the landlord maintains control.2. Keep in a reasonable state of repair all equipment under the landlord's control necessary to supply services that the landlord has expressly or impliedly agreed to furnish to the tenant, such as heat, water, elevator, or air conditioning.3. Make all necessary structural repairs.4. Except for residential premises subject to a local housing code, and except as provided in sub. (3) (b), repair or replace any plumbing, electrical wiring, machinery, or equipment furnished with the premises and no longer in reasonable working condition.5. For a residential tenancy, comply with any local housing code applicable to the premises.(b) If the premises are part of a building, other parts of which are occupied by one or more other tenants, negligence or improper use by one tenant does not relieve the landlord from the landlord's duty as to the other tenants to make repairs as provided in par. (a).(bm) A landlord shall disclose to a prospective tenant, before entering into a rental agreement with or accepting any earnest money or security deposit from the prospective tenant, any building code or housing code violation to which all of the following apply: 1. The landlord has actual knowledge of the violation.2. The violation affects the dwelling unit that is the subject of the prospective rental agreement or a common area of the premises.3. The violation presents a significant threat to the prospective tenant's health or safety.4. The violation has not been corrected.(c) If the premises are damaged by fire, water or other casualty, not the result of the negligence or intentional act of the landlord, this subsection is inapplicable and either sub. (3) or (4) governs.(3) DUTY OF TENANT. (a) If the premises are damaged, including by an infestation of insects or other pests, due to the acts or inaction of the tenant, the landlord may elect to allow the tenant to remediate or repair the damage and restore the appearance of the premises by redecorating. However, the landlord may elect to undertake the remediation, repair, or redecoration, and in such case the tenant must reimburse the landlord for the reasonable cost thereof; the cost to the landlord is presumed reasonable unless proved otherwise by the tenant. Reasonable costs include any of the following: 1. Materials provided or labor performed by the landlord.2. At a reasonable hourly rate, time the landlord spends doing any of the following: a. Purchasing or providing materials.b. Supervising an agent of the landlord.c. Hiring a 3rd-party contractor.(b) Except for residential premises subject to a local housing code, the tenant is also under a duty to keep plumbing, electrical wiring, machinery and equipment furnished with the premises in reasonable working order if repair can be made at cost which is minor in relation to the rent.(c) A tenant in a residential tenancy shall comply with a local housing code applicable to the premises.(4) UNTENANTABILITY. If the premises become untenantable because of damage by fire, water, or other casualty or because of any condition hazardous to health, or if there is a substantial violation of sub. (2) materially affecting the health or safety of the tenant, the tenant may remove from the premises unless the landlord proceeds promptly to repair or rebuild or eliminate the health hazard or the substantial violation of sub. (2) materially affecting the health or safety of the tenant; or the tenant may remove if the inconvenience to the tenant by reason of the nature and period of repair, rebuilding, or elimination would impose undue hardship on the tenant. If the tenant remains in possession and the condition materially affects the health or safety of the tenant or substantially affects the use and occupancy of the premises, rent abates to the extent the tenant is deprived of the full normal use of the premises. This section does not authorize rent to be withheld in full, if the tenant remains in possession. If the tenant justifiably moves out under this subsection, the tenant is not liable for rent after the premises become untenantable and the landlord must repay any rent paid in advance apportioned to the period after the premises become untenantable. This subsection is inapplicable if the damage or condition is caused by negligence or improper use by the tenant.(5) RESTRICTION OF REGULATION OF ABATEMENT. An ordinance enacted by a city, town, village, or county regulating abatement of rent shall permit abatement only for conditions that materially affect the health or safety of the tenant or substantially affect the use and occupancy of the premises.Amended by Acts 2018 ch, 317,s 40, eff. 4/18/2018.Amended by Acts 2018 ch, 317,s 39, eff. 4/18/2018.Amended by Acts 2018 ch, 317,s 38, eff. 4/18/2018.Amended by Acts 2018 ch, 317,s 37, eff. 4/18/2018.Amended by Acts 2013SP1 ch, 76,s 12, eff. 3/1/2014.1981 c. 286; 1993 a. 213, 486, 491; 2001 a. 103; 2011 a. 143. The remedy provided to the lessor by sub. (3) does not exclude diminution of market value as an alternative method of computing damages, and although the former is to be preferred where the property is easily repairable and the latter where the injury does not destroy the property, evidence of each method may be introduced by either party with the lesser amount awardable as the proper measure of damages. Laska v. Steinpreis, 69 Wis. 2d 307, 231 N.W.2d 196 (1975). A landlord must exercise ordinary care toward tenants and others on leased premises with permission. Pagelsdorf v. Safeco Insurance Co. of America, 91 Wis. 2d 734, 284 N.W.2d 55 (1979). Sub. (3) (a) requires a tenant to pay for damage that the tenant negligently causes to a landlord's property regardless of whether the landlord or landlord's insurer initially pays for the damage. Bennett v. West Bend Mutual Insurance Co. 200 Wis. 2d 313, 546 N.W.2d 204 (Ct. App. 1996), 95-2673. If there is no written lease, section 704.07 applies to the obligation to make repairs. For there to be a remedy for a breach of a duty to repair other than that provided in s. 704.07, the obligation must be in a written lease signed by both parties. Halverson v. River Falls Youth Hockey Association, 226 Wis. 2d 105, 593 N.W.2d 895 (Ct. App. 1999), 98-2445. Sub. (2) does not authorize an independent cause of action for defective conditions that do not rise to the level of a health or safety hazard, but are nonetheless the result of the failure of a landlord to maintain equipment in a reasonable state of repair. Sub. (4) is the exclusive remedy for violations of sub. (2). Zehner v. Village of Marshall, 2006 WI App 6, 288 Wis. 2d 660, 709 N.W.2d 64, 04-2789. Sub. (2) (a) 3. does not require the landlord to make all structural repairs, only all necessary structural repairs, and implies that the landlord will have some notice of the defect, latent or obvious, so that he or she can evaluate whether a repair is, in fact, a necessary repair. Raymaker v. American Family Mutual Insurance Co. 2006 WI App 117, 293 Wis. 2d 392, 718 N.W.2d 154, 05-1557. Nothing in the history of the section suggests any intent by the legislature to impose negligence per se for a violation of this section. Rather, the legislature intended only to alter the common law rule to make the landlord and tenant more evenly share the duties of repair. Sub. (4) provides the tenant with the remedy of rent abatement if the landlord fails to fulfill his or her repair duties and to the extent the tenant is deprived of use of the premises, but this section does not provide a private cause of action. Raymaker v. American Family Mutual Insurance Co. 2006 WI App 117, 293 Wis. 2d 392, 718 N.W.2d 154, 05-1557. An appliance that cannot be used as intended without creating a risk of fire or electrocution is not in reasonable working condition and constitutes a substantial violation materially affecting the health or safety of the tenant under sub. (4), entitling the tenant to rent abatement. Boelter v. Tschantz, 2010 WI App 18, 323 Wis. 2d 208, 779 N.W.2d 467, 09-1011. Section 66.0104(2) (d) 1 a. preempted a provision in an ordinance requiring landlords to notify tenants of city inspections under the city's inspection and registration program; it does not stop local governments from implementing rental housing inspection and registration programs as part of a housing code, let alone preclude other substantive housing code regulations. Olson v. City of La Crosse, 2015 WI App 67, 364 Wis. 2d 615, 869 N.W.2d 537, 15-0127. The term "repair" does not extend to routine cleaning. Thus cleaning carpets at the end of a tenancy does not fall within the sphere of duties assigned to landlords under sub. (2). Because carpet cleaning is not a landlord's legally-prescribed duty, including a provision in a residential rental agreement requiring the tenant to have carpets professionally cleaned does not waive the landlord's legal obligation. This section is silent with regard to the imposition of cleaning responsibilities, as distinct from repairs, leaving the parties free to assign responsibilities through lease provisions. OAG 4-13. Landlord and tenant law the implied warranty of habitability in residential leases. 58 MLR 191. Landlord no longer immune from tort liability for failure to exercise reasonable care in maintaining premises. 64 MLR 563 (1981). Landlords' liability for defective premises: caveat lessee, negligence, or strict liability? Love, 1975 WLR 19.