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Ontario residential tenancy

Ontario Form N5: Interference, Damage or Overcrowding

The official Ontario LTB notice, explained in everyday language: what it is for, how to fill it in, deadlines, service and next steps.

Use N5 for substantial interference, wilful or negligent damage, or overcrowding contrary to safety or property standards. A first N5 generally gives 7 days to correct the problem; a qualifying second N5 within 6 months works differently.

First notice20-day termination date
Correct the issue7 days on first N5
Qualifying second14-day termination date

Choose N5 for the correct reason

Complete the form — what each part needs

  1. Identify everyone: list named tenants and landlords plus the exact rental-unit address.
  2. First or second N5: choose whether this is the first N5 in the previous six months or a qualifying second N5 following a first with a seven-day correction period.
  3. Choose each relevant reason: describe events with dates, times, people involved and effects. Avoid vague wording such as “tenant is disruptive.” Attach an extra detail page if necessary.
  4. For a first N5: explicitly tell the tenant how to fix the problem within 7 days. For damage, specify repair, replacement or estimated cost. For overcrowding, identify the relevant occupancy standard and number.
  5. Termination date: first N5 at least 20 days after service; qualifying second N5 at least 14 days. Exclude the service day, and add mail/courier delivery time where relevant. Sign and date.
Worked notice example

A first N5 is handed to the tenant on November 1. The earliest termination date is November 21. The tenant has until the end of November 8 (seven days after service) to correct the specified issue and void that first notice. The landlord can seek an L2 from day 8 if it remains uncorrected.

Serve it — and what happens afterward

Give the notice in person to the tenant/adult in the unit, leave it in the mailbox or under the unit door, or serve by an approved mail/courier/fax method. Do not post it on the unit door. Keep a copy and a service record.

N7 is a different notice for certain serious allegations. Not every complaint or unproven damage claim qualifies for the stricter N7 route.

Common mistake to avoid

A first N5 needs a clear description of how to cure the issue. A notice with generic accusations is vulnerable to challenge.

Related Ontario tools

Official sources

Official sources

  1. Tribunals Ontario — N5 instructions (LTB's linked source)
  2. Tribunals Ontario — official N5 form PDF
  3. Tribunals Ontario — current official forms and filing information
  4. Residential Tenancies Act, 2006
  5. LTB — September 21, 2026 rules update