What are the valid ways to serve an N4 in Ontario?

The LTB's rules allow an N4 to be served by handing it to the tenant, handing it to an apparently adult person in the rental unit, placing it in the tenant's mailbox or where mail is ordinarily delivered at the unit, sliding it under the door of the unit (or through a mail slot), sending it by regular mail or Xpresspost, or sending it by courier. Fax is valid only if the tenant has given a fax number for service, and email is valid only with the tenant's prior written consent.

Can I serve an N4 by email or text message?

Text message, no — it is not a valid service method and an N4 served only by text will be ruled invalid. Email is valid only if the tenant has consented in writing to receive notices by email at a specific address. Without that consent, an emailed N4 is at best a courtesy copy; serve by one of the accepted methods as well.

When is a mailed N4 deemed served?

A notice sent by mail — including Xpresspost — is deemed served on the fifth day after mailing, so the termination date must allow for those 5 extra days. A courier adds 1 day. Hand delivery, an adult in the unit, the mailbox, and under the door add no extra days.

Do I need a process server to serve an N4?

No. Unlike some court documents, an N4 has no personal-service requirement — mail is a valid method under the RTA, deemed served five days after mailing whether or not the tenant accepts the envelope. A process server ($100–$250 per attempt in Ontario) is an option, not a requirement. What the LTB does expect is proof: a completed Certificate of Service, ideally backed by independent evidence such as a tracking number.

What proof of service do I need for the LTB?

The person who served the N4 completes a Certificate of Service recording who was served, the method, and the date. When you file the L1 application the certificate is part of the package, and if the tenant disputes service, independent evidence — an Xpresspost tracking record, a courier receipt, a mailing receipt — is what turns your word into documentation.

What happens if the N4 is served incorrectly?

Invalid service voids the notice. If the method wasn't one the rules allow, the termination date didn't account for the deemed-service days, or the notice was served before rent was actually overdue, the LTB will dismiss the L1 application built on it — and you start over with a fresh N4 and a new notice period.

How to Serve an N4 in Ontario: Every Valid Method, Compared

A perfectly filled-out N4 still fails if it's served the wrong way. Ontario's Residential Tenancies Act recognizes a specific list of service methods, each with its own deemed-service timing — and using any other method, or getting the date math wrong, voids the notice. This guide covers every valid way to serve an N4, the days each method adds to your termination date, the proof the LTB expects, and the service mistakes that get L1 applications dismissed.

Serving starts with a valid notice.

EasyServe generates the N4 with the service-method date math already applied — plus the Certificate of Service, free.

Generate N4 + Certificate

The Valid Ways to Serve an N4

Under the LTB's rules, a landlord may serve an N4 by any of the following methods. Each is grouped by how many days it adds to the earliest valid termination date:

Hand it to the tenant

Direct personal delivery. Effective immediately — +0 days. Instant, but there's no third-party record it happened.

Hand it to an adult in the unit

An apparently adult person in the rental unit. +0 days.

Mailbox at the unit / under the door

Placed in the tenant's mailbox (or where mail is ordinarily delivered), slid under the door, or through a mail slot. +0 days. Contested more often than tracked methods.

Commercial courier

Deemed served the day after the courier delivers. +1 day added to the termination date, with a delivery record.

Regular mail or Xpresspost

Deemed served on the 5th day after mailing — +5 days. Xpresspost adds a tracking number and delivery scan: independent proof the tribunal can verify.

Fax or email — conditions apply

Fax only if the tenant provided a fax number for service. Email only with the tenant's prior written consent to that address.

Any other method invalidates the notice

Texting a photo of the N4, posting it on social media, taping it somewhere other than the unit, or emailing without written consent are not valid service. The tenant doesn't have to object at the time — the problem surfaces months later, at the L1 hearing, when the application is dismissed.

Deemed Service and Your Termination Date

The service method is part of the date math. An N4 for a monthly or yearly tenancy served on or after September 21, 2026 carries a 7-day notice period under Bill 60 (14 days if served before that date; weekly and daily tenancies are always 7). The deemed-service days stack on top: a monthly N4 mailed under the 7-day rule needs a termination date at least 7 + 5 = 12 days after mailing, while a couriered one needs 7 + 1 = 8. Get the stack wrong by one day and the notice is void. Check your exact date with the free N4 termination date calculator or see the 7-day N4 rules in detail.

Proving Service: the Certificate of Service

Serving the notice is step one; proving it is what wins at the Board. The person who served the N4 completes a Certificate of Service — who was served, by what method, on what date — and files it with the L1 application. Tenants routinely dispute service, and that's where the method you chose matters: hand delivery is your word; a mailed N4 with an Xpresspost tracking record is a documented fact the tribunal can verify independently. Complete the certificate at the time you serve, not weeks later from memory.

Do You Need a Process Server?

No — this is the most common misconception about serving an N4. There is no personal-service requirement: mail is a fully valid method under the RTA, deemed served five days after mailing whether or not the tenant accepts or signs for the envelope. A process server in Ontario typically charges $100–$250 per attempt and is the right tool for documents that genuinely require personal delivery — but for an N4, tracked mail achieves documented service at a fraction of the cost. If your situation is contested or complex, a licensed paralegal (typically $700–$2,000 for N4/L1 work) can advise and represent you — something no mailing or serving service can do.

The Service Mistakes That Sink L1 Applications

Serving too early. Rent must actually be overdue — serve the day after it was due, not the day it's due.
Ignoring the deemed-service days. A mailed N4 whose termination date only allows for hand delivery is void.
An invalid method. Text, untracked email without consent, or leaving it with a neighbour doesn't count.
No Certificate of Service. Without it, the L1 package is incomplete — a top reason applications are delayed or dismissed.
No independent proof for mail. If you mail it yourself with no receipt or tracking, a service dispute becomes your word against the tenant's.

Serving an N4 — FAQs

Related Guides

Disclaimer: This guide is a document-preparation aid, not legal advice. Service rules are governed by the Residential Tenancies Act, 2006 and the LTB's Rules of Procedure; confirm current requirements with the Landlord and Tenant Board or consult a licensed paralegal or lawyer for advice on your situation.