Lease Enforcement

Can landlords prohibit unauthorized occupants?

New Hampshire rental guidance and tenant-landlord operational information.
Published February 12, 2026 State-specific rental guidance Update This Question
Reviewed by Tenants & Landlords Editorial Team

This rental guidance was reviewed by the Tenants & Landlords Intelligence Team, specializing in lease agreements, notices, rent disputes, deposits, evictions, and tenant-landlord operational procedures.

Asked 111 days ago · New Hampshire

Can Landlords Prohibit Unauthorized Occupants in New Hampshire?

In New Hampshire, landlords have the right to control who resides in their rental properties. Unauthorized occupants—individuals living in the rental unit without the landlord’s permission—can create legal and practical challenges for landlords. Understanding how New Hampshire law approaches lease enforcement and occupant restrictions is essential for landlords seeking to maintain control over their properties while complying with state regulations.

Lease Agreements and Occupant Restrictions

The primary tool landlords use to manage occupants is the lease agreement. In New Hampshire, a well-drafted lease typically includes provisions that:

  • Specify who may reside in the rental unit.
  • Require tenants to obtain landlord approval before allowing additional occupants.
  • Define unauthorized occupants as a breach of the lease terms.

What to include in the lease regarding occupants:

  • Occupancy limits: Clearly state the maximum number of occupants allowed per unit, based on size and health and safety standards (such as those recommended by HUD or local code).
  • Authorized occupants: List the tenant(s) who are authorized to live in the unit.
  • Guest policy: Define how long guests may stay before requiring landlord approval.
  • Unauthorized occupant consequences: Outline the repercussions for violation, which might include notices to cure, fines, or eviction proceedings.
By specifying occupant rules in the lease, landlords lay a clear foundation for enforcement actions if unauthorized residents are discovered.

Legal Grounds for Prohibiting Unauthorized Occupants

New Hampshire landlords may prohibit unauthorized occupants based on the lease terms and under the landlord-tenant laws codified in RSA Chapter 540-A (the Revised Landlord and Tenant Act).

Key points regarding unauthorized occupants in New Hampshire:

  • Lease violation: Any occupant not authorized in the lease agreement constitutes a violation of the lease terms. Landlords can treat this violation as grounds for lease enforcement actions.
  • Health and safety concerns: Overcrowding or unauthorized occupants may raise health and safety issues that impact habitability, further justifying landlord action.
  • Tenant responsibility: New Hampshire law holds tenants responsible for the conduct of their guests and occupants, reinforcing landlords’ ability to enforce rules about who may reside in the rental unit.

Enforcing Occupant Restrictions: Practical Steps for Landlords

When a landlord suspects or discovers an unauthorized occupant, several steps can be taken to enforce lease provisions:

1. Confirm the Occupant’s Status

  • Conduct a lease compliance inspection or communicate with the tenant to verify who is residing on the premises.
  • Document any unauthorized individual(s) living onsite, including dates and details.

2. Issue a Written Notice

Under New Hampshire law, landlords generally should provide tenants with written notice of the lease violation. This notice typically:

  • Identifies the lease clause violated (unauthorized occupants).
  • States the required corrective action (remove the unauthorized occupant).
  • Provides a reasonable time period to cure the violation—often 7 to 14 days.
  • Informs the tenant of possible consequences (including lease termination) if the violation is not remedied.

3. Follow Up Consistently

  • If the unauthorized occupant remains after the notice period, the landlord may issue a second notice or proceed with eviction.
  • Maintain detailed records of communications and tenant responses.

4. Initiate Eviction Proceedings if Necessary

If the tenant fails to cure the violation, the landlord can file an eviction case (summary possession action) in New Hampshire’s district court.

  • The landlord must prove the lease violation and that the tenant was given an opportunity to remedy.
  • Courts in New Hampshire recognize unauthorized occupants as a legitimate ground for eviction when properly documented.

Additional Considerations

Occupancy Limits and Local Codes

Landlords should ensure that occupancy limits comply with health and safety codes, fire regulations, and any local ordinances that might affect the number of residents permitted per unit.

Reasonable Accommodation Requests

Under federal and state fair housing laws, tenants with disabilities may request reasonable accommodations that involve additional occupants, such as live-in aides. Landlords must evaluate such requests carefully and not refuse them arbitrarily.

Avoiding Harassment or Unlawful Retaliation

Landlords must exercise caution to avoid actions that could be viewed as harassment or retaliation. Any enforcement steps taken over unauthorized occupants should align strictly with lease terms and legal procedures.

Summary

In New Hampshire, landlords have the right to prohibit unauthorized occupants through clear lease provisions and enforce these rules under state landlord-tenant law. Effective enforcement involves:

  • Including explicit occupant restrictions in the lease agreement.
  • Providing written notice of violations and opportunities to cure.
  • Pursuing eviction if necessary, consistent with RSA Chapter 540-A.
  • Following health, safety, and fair housing requirements.
By adhering to these guidelines, landlords in New Hampshire can maintain control over occupancy in their rental properties while protecting their legal rights.

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