Where you file a complaint against a landlord depends on what the landlord did. Habitability and building-code problems go to your city or county code enforcement office or health department. Discrimination complaints go to the U.S. Department of Housing and Urban Development. Money disputes, including unreturned security deposits, go to small claims or housing court. Patterns of misconduct across multiple tenants go to your state attorney general. Almost every one of these paths expects you to have given the landlord written notice first.
Start With Written Notice to the Landlord
Before an agency or a court will take your complaint seriously, you generally need to show that you told the landlord about the problem and gave a reasonable chance to fix it. Skipping this step can get your complaint dismissed or weaken a later court case.
Put the specifics on paper: what is wrong, when you first reported it, and a clear deadline for the repair. Seven days is a common window for serious habitability issues, but what counts as reasonable tracks the severity. A complete loss of heat in winter demands faster action than a cracked entryway tile. Send the notice by certified mail with return receipt requested. If you hand-deliver it, bring a witness or have the landlord sign a copy acknowledging receipt.
If the deadline passes with no fix, that notice becomes the foundation of everything you file afterward. Agencies want proof the landlord had a fair chance to act. Courts treat the notice as evidence that the landlord knew about the problem and chose to ignore it.
Code Enforcement and Health Departments for Physical Conditions
If the problem is the condition of the unit, your city or county code enforcement office is the first place to go. These agencies handle structural issues like faulty wiring, broken plumbing, missing smoke detectors, and fire-code violations. Health departments handle environmental hazards: mold, pest infestations, lead paint, sewage problems. Some cities combine the two into a single building inspection department; others split them.
The process is simple. You contact the office, describe the violation, and an inspector visits the property. If the inspector confirms a violation, the landlord gets a notice requiring corrective action within a set timeframe. Landlords who ignore the order face escalating fines and, in persistent cases, condemnation of the unit. Most landlords respond quickly once a government inspector shows up.
You can usually file online, by phone, or in person. Many cities route housing complaints through a 311 hotline or a municipal portal. Keep a copy of your complaint confirmation.
HUD for Fair Housing Discrimination
When the issue is discriminatory treatment rather than a broken pipe, the complaint goes to HUD’s Office of Fair Housing and Equal Opportunity. HUD investigates allegations that a landlord refused to rent to you, imposed different terms, or harassed you because of race, color, national origin, religion, sex, disability, or familial status. Those are the seven protected classes under the Fair Housing Act. Common examples include a landlord refusing a service animal, steering families with children away from certain units, or charging higher deposits to tenants of a particular national origin.
You can file through HUD’s online portal, by mail, or by calling its toll-free number. The deadline is one year from the date of the last discriminatory act. After you file, HUD must notify the landlord within ten days and attempt conciliation. If that fails, HUD investigates and aims to complete its review within 100 days, though complex cases take longer. If HUD finds reasonable cause, the case moves to an administrative hearing or federal court.
Penalties are substantial. A first-time violator faces an administrative penalty of up to $26,262 per discriminatory act. A landlord with one prior violation within the past five years faces up to $65,653, and a landlord with two or more prior violations within seven years faces up to $131,308. In cases where the Department of Justice files a civil action, penalties can reach $100,000 or more for repeat offenders. Courts can also order policy changes, fair-housing training, and payment of your actual damages.
Small Claims and Housing Courts for Money and Repairs
When you need money back or a court order forcing repairs, the court system is the right venue. Small claims court handles disputes over unreturned security deposits, out-of-pocket repair costs, and other monetary losses. Dollar limits vary widely by state, from around $2,500 at the low end to $25,000 at the high end. Filing fees generally run $15 to $100 for smaller disputes, with larger claims costing more. You typically do not need a lawyer, which keeps costs down.
Housing courts, which exist in many larger cities, specialize in landlord-tenant disputes and handle a broader range of issues. They oversee rent escrow cases, where you pay rent to the court clerk instead of the landlord until habitability problems are resolved. If the court finds the landlord failed to maintain the property, it can order repairs, reduce your rent, or release escrowed funds for self-repair. Housing court judges move through these disputes faster than general civil courts.
A court judgment carries enforcement tools agency complaints lack. If the landlord owes you money and refuses to pay, you can pursue wage garnishment or a bank levy. Some states also let prevailing tenants recover attorney’s fees and court costs.
State Attorney General for Patterns of Misconduct
Your state attorney general’s office handles patterns of landlord misconduct rather than individual repair disputes. If a property management company is systematically withholding security deposits, running rental scams, or engaging in deceptive practices across multiple tenants, the AG’s consumer protection division may investigate. These offices generally will not represent you personally or resolve a single disagreement, but your complaint adds to a file that can trigger a broader enforcement action.
Filing with the AG is worth doing alongside other channels because it creates a record. When several tenants file similar complaints about the same landlord, the AG is more likely to act. Most state AG websites have an online complaint form, and it takes only a few minutes.
Security Deposit Disputes
Unreturned security deposits are one of the most common tenant complaints, and the venue depends on the amount and the nature of the dispute. If the landlord simply kept the money without explanation, small claims court is the fastest path. If the landlord made improper deductions for normal wear and tear, you may also have a statutory damages claim.
Every state sets a deadline for landlords to return the deposit after move-out. These range from as few as five days when no deductions are claimed to sixty days in others. Thirty days is the most common. Missing the deadline often triggers automatic penalties: forfeiting the right to withhold any portion of the deposit, liability for double the amount wrongfully withheld, or payment of your attorney’s fees. Those provisions are what give deposit claims real teeth.
To win, you need move-in and move-out inspection records, photographs of the unit’s condition at both points, and any written communication about deductions. Landlords who cannot produce an itemized list of deductions within the statutory deadline often lose by default.
Know the Retaliation Rules Before You File
Filing a complaint against your landlord is a protected activity in nearly every state. The landlord cannot raise your rent, reduce services, refuse to renew your lease, or start eviction proceedings as punishment for exercising your legal rights.
Most anti-retaliation statutes create a rebuttable presumption: if the landlord takes an adverse action within a set window after your complaint, the law presumes retaliation. Six months is the most common window. The landlord can rebut the presumption only by showing a legitimate, independent reason that would have produced the same action regardless of your complaint.
If the landlord retaliates anyway, you may be entitled to actual damages, civil penalties, and attorney’s fees. Remedies vary by state, but the protection itself is close to universal. Document everything. An eviction notice that lands two weeks after you called the health department is your strongest evidence.
Build the File Before You File
The strength of your complaint, in any venue, depends on your documentation. Start with the lease, which establishes what the landlord promised. Build a timeline of every relevant interaction: when you first reported the problem, how you reported it, and what the landlord said or did.
Photographs are the most persuasive evidence in habitability cases. Take dated photos of every defect, ideally with a visible timestamp. If the problem worsens, take new photos periodically to show progression. Video works even better for active leaks, pest activity, or non-functioning systems. Keep receipts for any repairs you paid out of pocket, hotel stays made necessary by an uninhabitable unit, or medical bills tied to conditions like mold exposure.
When you do file, keep a copy of every submission and note your case number. Follow up if you have not heard back within a few weeks. Agencies handle large volumes of complaints, and a polite follow-up call can keep yours from sitting at the bottom of the pile.