When a neighbor's noise, smoke, odors, light, water or trees become a legal wrong, how courts weigh the harm, and what remedies are available.
Looking for a lawyer rather than a definition? Skip to the state-by-state list of Neighbors law firms.
A private nuisance is a substantial and unreasonable interference with another person's use and enjoyment of their land. Typical examples are persistent loud noise, smoke, dust, odors, vibration, bright lights aimed at a house, and water diverted onto a neighbor's lot. It differs from trespass, which is a physical entry onto the land (a fence, a structure, a person); a nuisance usually involves no entry at all. Ordinary annoyances of living near other people are not a nuisance: the interference must be one that would substantially bother a person of normal sensitivity, not only someone unusually sensitive.
Whether an interference is unreasonable is a balancing question. Courts weigh the gravity of the harm (how severe, how long it lasts, the character of the neighborhood, and whether the harmed use was there first) against the utility of the conduct and whether the person causing it could avoid the harm at reasonable cost. Moving next to an existing activity, sometimes called "coming to the nuisance", weighs against the newcomer but does not always defeat the claim. Every state has a right-to-farm law that protects established agricultural operations from many nuisance suits, and some states have spite-fence statutes against fences or structures built only to annoy.
Trees are a frequent source of disputes. In most states a person may trim a neighbor's branches and roots back to the property line at their own expense, but may not enter the neighbor's land or kill the tree, and some states award multiplied damages for wrongfully cutting or injuring another's trees. Liability for a tree that falls usually depends on whether the owner knew or should have known it was dangerous. The remedies for a nuisance are damages and an injunction ordering the conduct to stop or change; courts sometimes award damages instead of an injunction when stopping the activity would cause disproportionate harm. Many disputes are better resolved through local noise and property ordinances, a homeowners association, or community mediation than through a lawsuit. See also boundary line disputes.
Most neighbor disputes start with a polite written request, a record of dates and times (photos, recordings, logs), and a check of local ordinances and any HOA rules. Talk to a real estate or civil litigation lawyer when the interference is ongoing and serious, when it is damaging your property or health, when a tree or water problem threatens a structure, or when a neighbor threatens to sue you; a lawyer can tell you whether your state treats the problem as nuisance, trespass or something else and what a court is likely to order.
Worried about the cost? A lawyer can be hired for one part of a case only (limited-scope representation), may be paid from what a claim recovers (contingency fee), or may be free through a pro bono program or legal aid; a court can also waive its own filing fees.
Choose your state to see Neighbors law firms in the city where we list the most; your city may be under “other cities”, A to Z.
Entries on the same subject:
Other entries in the same area of law, each written from the same primary sources.