Is a landlord liable when one tenant harasses another tenant?
Under HUD's fair housing rules, yes, it can be. An owner is directly liable for failing to take prompt action to end discriminatory harassment by a third party, such as another tenant, when the owner knew or should have known about it and had the power to correct it (24 CFR 100.7). The fix also has rules: the response may not penalize the person being harassed, so moving or evicting the victim does not count.
What counts as harassment under the Fair Housing Act
HUD's rule at 24 CFR 100.600 covers harassment because of race, color, religion, sex, familial status, national origin or disability. It names two kinds.
- Quid pro quo: an unwelcome request or demand made a condition of renting, of the lease terms, or of services. It can count even if the person goes along with it.
- Hostile environment: unwelcome conduct severe or pervasive enough to interfere with someone's use or enjoyment of their home or the building's services and facilities.
Whether conduct is a hostile environment depends on the whole picture: what happened, where, how often, how long, and who was involved, judged from the view of a reasonable person in the victim's position. Harassment can be written, spoken or other conduct, with no physical contact needed, and a single incident can be enough if it is severe. No psychological or physical harm has to be shown.
Ordinary neighbor friction, like noise or parking fights with no link to a protected trait, is not fair housing harassment. It may still break your lease rules, and you handle it as a lease matter.
When the owner becomes responsible
24 CFR 100.7 sets out three ways an owner is liable.
| Who did it | When the owner is liable | Section |
|---|---|---|
| The owner | Always, for the owner's own conduct | 100.7(a)(1)(i) |
| An employee or agent, such as a manager or maintenance worker | Directly, if the owner knew or should have known and did not act promptly; and vicariously, under agency law, whether or not the owner knew | 100.7(a)(1)(ii) and 100.7(b) |
| A third party, such as another tenant | If the owner knew or should have known, had the power to correct it, and did not take prompt action | 100.7(a)(1)(iii) |
The power to correct depends on how much control you have over the person. For a tenant, your lease is that control: rules on conduct, the right to send violation notices and, in the end, the right to end the tenancy under state law. That is why the rule reaches owners at all.
This is the rule as printed in the eCFR on October 30, 2026. Courts have not all applied third-party liability the same way, so ask a fair housing attorney in your state about a live complaint.
A decision guide when a complaint comes in
| If this happens | Do this |
|---|---|
| A tenant reports slurs, threats or notes aimed at their race, religion, national origin, disability, sex or children | Treat it as a fair housing complaint. Write it down the same day, with dates, words used and witnesses. Acknowledge it in writing. |
| You can confirm it (a note, a photo, a video, a second witness) | Send the harassing tenant a written lease violation notice naming the conduct and the rule it breaks. Use your state's notice form and timing. |
| It happens again after the notice | Move to the next step your state allows, such as a final notice or ending the tenancy, and talk to an attorney before you file. |
| The threat involves violence | Tell the tenant to call the police, and call them yourself if you witness it. Some states allow faster notices for this; Arizona, for example, allows immediate termination for threats or assault on the premises. |
| The harasser is your employee or contractor | Remove them from that tenant's unit and building now, then decide on discipline. You are liable for an agent's conduct even if you did not know. |
| The victim asks to move to another unit | You may offer it if they want it, but you may not make them move, raise their rent or end their lease as the fix. |
The last row matters most. 100.7(a)(2) says prompt action may not include anything that penalizes or harms the person harassed, such as evicting them. A "solution" that removes the victim instead of the harasser is the classic mistake.
A worked timeline
Example a made-up 40 unit building. On day 1, the tenant in 3C emails the owner photos of two notes taped to her door mocking her religion. On day 1 the owner replies in writing that the notes are against the building rules and that she is looking into it. On day 2 a neighbor confirms seeing the tenant in 3D tape one note. On day 3 the owner sends 3D a lease violation notice that quotes the conduct rule and warns that a repeat may end the tenancy. On day 19 a third note appears, and the camera in the hall shows 3D. On day 20 the owner sends the next notice her state allows and books a call with her attorney. Every step took one to two days, and none of them touched 3C's lease or rent.
The record is what protects you. A complaint, an answer, a notice and a follow-up, each dated and kept with the lease, show that you took prompt action.
How long a tenant has to bring a claim
Under the Fair Housing Act, a person may sue in federal or state court within two years after the discriminatory practice occurs or ends, and time spent in a HUD administrative case does not count against the two years (42 U.S.C. 3613). Keep complaint records for at least that long after the tenancy ends. Many states and cities have their own fair housing laws and agencies, sometimes with more protected groups, so check yours.
Keeping the record in DoorKeeping
DoorKeeping keeps each tenant's lease, documents and emails with the unit, so a complaint, your reply and every notice sit in one place with their dates. You can email tenants from DoorKeeping, and any legal step, such as a violation notice, waits for your one-tap approval. You can ask Claude or ChatGPT to pull every message about a unit when your attorney asks. DoorKeeping is $2 per unit per month, with $0 in other fees for owners and tenants, and it gives no legal advice.
Sources
- eCFR, 24 CFR 100.600, Quid pro quo and hostile environment harassment, read Oct 30, 2026
- eCFR, 24 CFR 100.7, Liability for discriminatory housing practices, read Oct 30, 2026
- eCFR, 24 CFR 100.65, Discrimination in terms, conditions and privileges, read Oct 30, 2026
- 42 U.S.C. 3613, Enforcement by private persons (Cornell LII), read Oct 30, 2026
- Arizona Revised Statutes 33-1368, read Oct 30, 2026
Questions
- Can a landlord be sued for what another tenant does?
- Under HUD's rule at 24 CFR 100.7, yes, when the harassment is because of a protected trait, the owner knew or should have known, had the power to correct it, and did not act promptly.
- Can I just move the tenant who is being harassed?
- Only if they ask for it. The rule says your response may not penalize or harm the person harassed, so forcing a move or ending their lease does not count as prompt action.
- Does one incident count as harassment?
- It can. 24 CFR 100.600 says a single incident may be enough when it is severe, such as a threat of violence tied to race or religion.