When it comes to handling tenants who violate lease terms in New Hampshire, landlords must be well-informed about the state's landlord-tenant laws. If a tenant breaks the rules, such as not paying rent or damaging the property, the landlord can take necessary legal action only after giving a written notice within the specified time limit. If the issue remains unresolved, the landlord can file an eviction lawsuit in court. According to New Hampshire landlord-tenant law, landlords cannot just force tenants to move out without a court order.