New Jersey Landlord Maintenance and Repair Obligations

New Jersey landlords must keep a rental fit to live in for the whole tenancy. The rule comes from the state Supreme Court's decisions in Marini v. Ireland (1970) and Berzito v. Gambino (1973), which created the implied warranty of habitability and let tenants offset rent when vital facilities fail. Buildings with three or more units must also meet the state's multiple dwelling regulations, including heat of at least 68 degrees during the day from October 1 to May 15 and hot water of at least 120 degrees. Most rentals built before 1978 also need a lead-safe certificate.

What the warranty of habitability requires

The Department of Community Affairs (DCA) summarizes the rule this way: by offering a unit for rent, the landlord promises it is habitable and agrees to keep it that way. The duty centers on "vital facilities," the items that make a unit livable. DCA's examples are toilets, hot and cold water, heat, electricity, windows, and air conditioning that came with the tenancy.

Not every defect counts. DCA says a maintenance problem that does not threaten residents' safety or affect habitability does not justify withholding rent or repair and deduct, and each case is judged on its own facts. The tenant is also responsible for damage caused by malicious or abnormal use.

Which rulebook applies depends on building size:

For multiple dwellings, the regulations require you to keep the property in good repair, clean, and free of infestation and hazards, and to maintain heat, building security, smoke alarms, plumbing, and electrical systems. You must register the building with the Bureau of Housing Inspection, post the certificate of registration in a conspicuous place, and file it every year. Registration violations carry a $200 penalty per violation. The Bureau inspects every 7, 5, or 2 years depending on how quickly past violations were fixed. Non-owner-occupied 1- and 2-unit rentals register with the municipal clerk instead.

Heat, hot water, and pest control in multiple dwellings

The current regulation runs the heat season through May 15, later than the May 1 date some older guides give. You must supply the fuel and keep the heating system working even if the lease says otherwise. You may shift fuel or energy costs to a tenant who agrees in writing to pay for heat only if the unit has its own exclusive heating equipment and its fuel or energy use can be separately calculated and billed. You must still maintain the heating system. You are not responsible for temperature drops caused by a tenant leaving windows or doors open.

If heat fails and you do not act after notice, the tenant can call the local health officer, who can order the repairs needed to restore heat as your agent.

Pests. In a multiple dwelling, you must eradicate insects, rats, and other pests when an infestation is in two or more units or in common areas. You must also run prevention and treatment through a qualified person at least once a year, and more often when infestations recur.

Lead-safe certificates for pre-1978 rentals

Since July 22, 2022, New Jersey has required lead-based paint inspections of single-family, two-family, and multiple-unit rentals built before 1978. Under the 2024 amendment, the first inspection was due by July 22, 2025, or at the first tenant turnover, whichever came first. After that, inspections are due every three years or at tenant turnover, whichever is earlier.

• Who inspects: the municipality, or a certified lead evaluation contractor it hires. Towns must also let you hire a certified contractor yourself.
• Type of test: a visual inspection in most towns, or dust wipe sampling where at least 3 percent of tested children age 6 or under have elevated blood lead levels.
• Result: a passing unit gets a lead-safe certificate valid for three years. During those three years, a tenant turnover does not trigger a new inspection.
• If hazards are found: you must fix them through abatement (permanent removal) or interim controls (temporary hazard reduction). After interim controls, the municipal agency or lead evaluation contractor must reinspect using dust wipe sampling within 60 days of the initial inspection. It may issue a lead-safe certificate only if the inspection shows the hazard no longer exists.
• Exempt: units built in 1978 or later, units certified lead-free, single-family and two-family seasonal rentals of under six months a year whose tenants do not have consecutive lease renewals, and multiple dwellings registered with DCA for at least 10 years with no outstanding lead violations.
• Penalty: if you do not cure a violation within 30 days, up to $1,000 per week until the inspection is done or remediation starts.

For covered rentals, you must report every tenant turnover to the municipality, provide evidence of a valid lead-safe certificate to both the tenant and municipality at turnover, and attach a copy to the lease. These duties apply even when turnover does not require a new inspection. For federal disclosure rules and remediation options, see what to do if your rental has lead.

What tenants can do when you do not repair

Before a tenant uses any self-help remedy, DCA says three things must be true: the defect affects a vital facility, the tenant did not cause it, and the tenant gave you notice and a reasonable time to fix it. DCA recommends certified mail, return receipt requested, for that notice.

1. Repair and deduct. The tenant pays for the repair and subtracts the cost from future rent. If you sue for nonpayment, the tenant must prove the defect, the notice, and your failure to act.
2. Rent withholding. Under Marini, the tenant can withhold all or part of the rent and use your breach as a defense in a nonpayment eviction. DCA advises tenants to save the withheld money, because a tenant who goes to court will very likely have to deposit the full rent with the court.
3. Rent abatement. Under Berzito, a court can reduce the rent to the reasonable value of the unit in its defective condition, and the tenant can sue to recover rent already paid.
4. Rent receivership. Under N.J.S.A. 2A:42-85 through 2A:42-96, a tenant or the town's public officer can ask the court to order all tenants' rent paid to the court clerk and used to fix the conditions. Grounds include no heat, running water, light, electricity, or sewage service, or another substantial code violation. Any money left after the work goes back to you with an accounting. The law does not apply to owner-occupied buildings with two or fewer rental units.
5. Constructive eviction. If neglect makes the unit unfit, the tenant can move out and end the lease without owing the remaining rent.

Your defenses in a rent receivership case are listed in the statute: the condition did not exist or has been fixed, a petitioning tenant or family member caused it through malicious or abnormal use, or a tenant refused you entry to make the repair. That last defense is a reason to follow the New Jersey entry and access rules and keep written records of every access request. For how withholding claims play out in court, see the New Jersey eviction process for landlords.

Steps that keep you in compliance

1. Service the boiler or furnace in September, before the October 1 heat season starts.
2. Answer repair requests in writing and log the date reported, the date fixed, and the cost.
3. Calendar the lead-safe certificate expiration and schedule the next inspection before any tenant turnover that falls after it.
4. Renew your multiple dwelling registration every year and keep the certificate posted.
5. Book annual pest prevention for any building with three or more units.

For a maintenance schedule that works in any state, see how to maintain and repair your rental, and for the general legal baseline, see how much maintenance and repair is required by law.