Owning a rental property in Ontario can be a genuinely rewarding investment — but the gap between a profitable landlord and a stressed-out one often comes down to a handful of avoidable mistakes. The Residential Tenancies Act (RTA, 2006) is one of the most tenant-protective pieces of legislation in North America, and the Landlord and Tenant Board (LTB) process can be slow and costly when things go wrong. In our experience managing rentals across Belleville, Trenton, Cobourg, Oshawa, Picton, and Quinte West, we see the same errors come up again and again — from first-time landlords and seasoned investors alike.
This article is not meant to scare you away from the rental market. It is meant to give you a clear-eyed view of where landlords lose money, time, and sleep — and what you can do differently. Whether you self-manage or are considering working with a professional property manager, understanding these pitfalls will make you a sharper, more protected property owner.
At Blue Anchor, we have built our entire operation around preventing these exact mistakes on behalf of our clients. What follows is a frank breakdown of the most common errors we encounter, with practical guidance on how to avoid each one.
Mistake #1: Skipping Proper Tenant Screening
This is the single most consequential mistake a landlord can make. A bad tenant placement does not just mean a difficult few months — under Ontario's RTA, removing a non-paying or problem tenant can take six months to a year or longer, even with recent improvements brought in by Bill 60 (Fighting Delays, Building Faster Act, 2025). The cost of a single bad tenancy — lost rent, legal fees, property damage, and LTB filing costs — can easily exceed $15,000 to $25,000.
Common screening mistakes include:
- Accepting verbal income confirmation without documentation
- Skipping credit checks entirely or misreading credit reports
- Failing to contact previous landlords (not just the current one)
- Rushing to fill a vacancy and overlooking red flags
- Asking illegal questions that violate the Ontario Human Rights Code
At Blue Anchor, we run a structured, multi-step screening process for every applicant across all of our managed properties — from our Belleville portfolio to our Oshawa properties. We verify employment income, pull full credit reports, contact prior landlords, and cross-reference references before any offer is made. You can read exactly how we do it in our detailed breakdown of how Blue Anchor screens tenants. Thorough screening is not optional — it is the foundation of a profitable rental.
Mistake #2: Using an Incomplete or Non-Compliant Lease
Ontario requires landlords to use the standard lease agreement prescribed under the RTA for most residential tenancies. Failing to use this form — or adding illegal clauses — can create serious problems. Tenants who are not provided with the standard lease within 21 days of requesting it have the right to withhold one month's rent. Clauses that contradict the RTA (such as prohibiting guests, waiving the tenant's right to maintenance, or charging fees not permitted by law) are unenforceable and can expose you to LTB complaints.
We regularly see landlords in Quinte West and Trenton using old lease templates downloaded years ago that no longer reflect current law. Others add pet damage clauses that go beyond what the RTA permits, or try to include provisions around rent increases that are not compliant with the 2026 rent increase guideline of 2.1%. Any increase above this guideline requires an Above Guideline Increase (AGI) application to the LTB — it cannot simply be written into a lease.
Always use the current Ontario Standard Lease, available at Ontario.ca. Have a licensed paralegal or property manager review any additional clauses before signing.
Mistake #3: Mishandling Rent Arrears and LTB Forms
When a tenant stops paying rent, many landlords freeze — unsure of what to do or worried about making the situation worse. The clock matters enormously here. Every day of delay is money out of your pocket, and procedural errors can reset the entire process.
The correct process for non-payment of rent in Ontario is:
- Serve the tenant with an N4 Notice to End Tenancy for Non-Payment of Rent as soon as rent is 14 days late (for monthly tenancies)
- Wait the required voiding period (14 days for most tenancies)
- If the tenant does not pay or vacate, file an L1 Application to Evict a Tenant for Non-Payment of Rent with the LTB
- Attend the LTB hearing and present your documentation
Common errors include: serving the N4 with an incorrect amount owing (which voids the notice), missing deadlines, or filing the wrong form entirely. Bill 60, which came into force in 2025, introduced some procedural changes at the LTB aimed at reducing hearing backlogs — but the process still requires precision. At Blue Anchor, we handle all LTB documentation and filings for our managed properties, ensuring that notices are served correctly and on time. We have seen landlords lose months of progress because of a single arithmetic error on an N4.
Mistake #4: Neglecting Property Maintenance — and Documentation
Ontario landlords have a legal obligation under Section 20 of the RTA to maintain their rental properties in a good state of repair and comply with health, safety, and maintenance standards. Failing to do so does not just risk LTB complaints — it can result in rent abatements, fines, and significant damage to your property's long-term value.
But there is a second, equally important side to this: documentation. Landlords who respond to maintenance requests promptly but fail to keep records are vulnerable when tenants file T6 (Tenant Application About Maintenance) applications claiming neglect. Without written records, photos, and contractor invoices, it becomes your word against theirs at the LTB.
At Blue Anchor, we maintain a documented maintenance log for every property we manage. Every request is logged, every repair is tracked, and every contractor visit is recorded. This protects our landlord clients from bad-faith complaints and ensures the property stays in top condition — which directly supports tenant retention and long-term rental value. We also require tenants in our program to carry renters insurance, which you can learn more about in our post on why we built our own renters insurance program.
Mistake #5: Getting Rent Increases Wrong
Ontario's rent increase rules are among the most misunderstood aspects of being a landlord in this province. For 2026, the rent increase guideline is 2.1%. This applies to most residential units first occupied before November 15, 2018. Units first occupied after that date are exempt from rent increase guidelines — but landlords often do not know which category their property falls into.
Common mistakes include:
- Raising rent without serving a proper N1 Notice of Rent Increase at least 90 days before the increase takes effect
- Applying a rent increase more than once in a 12-month period
- Assuming a new tenancy resets rent control (it does not, for pre-November 2018 units)
- Attempting to raise rent above the guideline without filing an AGI application
For a full breakdown of what landlords need to know this year, see our May 2026 rental market report for Ontario landlords.
Mistake #6: Conducting Showings Without a System
Vacant units cost money every single day. But rushing showings — or conducting them without any vetting process — creates its own set of problems. Landlords who show units to anyone who calls often waste hours on unqualified prospects, expose their property to security risks, and fail to create the kind of first impression that attracts quality tenants.
When we screen tenants for our Trenton and Cobourg properties, we use a pre-qualification step before any showing is booked. This filters out applicants who clearly do not meet basic income or rental history requirements, saving everyone time. We also use a self-showing system for many of our properties — a model that has proven both safer and more efficient than traditional accompanied showings. If you are curious about how this works, we have written about why self-showings are safer in detail.
Mistake #7: Not Understanding What You Are Owed — and When
Many landlords who self-manage have no clear system for tracking rent collection, owner distributions, or financial reporting. This leads to confusion about cash flow, missed tax deductions, and disputes with tenants over payment history. Even landlords who work with property managers sometimes do not fully understand when and how they receive their funds.
At Blue Anchor, we operate on a transparent owner draw schedule so our clients always know exactly when to expect their rental income. If you are evaluating property management options, understanding the payment structure is critical — you can read about when property owners get paid and what to expect from a well-run management company.
Frequently Asked Questions
What happens if I serve an N4 with the wrong amount?
An N4 with an incorrect rent amount owing is legally defective and can be challenged at the LTB. The notice may be dismissed entirely, forcing you to start the process over. Always double-check the amount owing, the date rent was due, and the tenant's full legal name before serving any LTB notice.
Can I charge a tenant for damage beyond normal wear and tear?
Yes, but you cannot deduct from a last month's rent deposit (which is the only deposit permitted under the RTA — Ontario does not allow security deposits). You would need to pursue the tenant through the LTB using an L2 application or Small Claims Court for damage claims after the tenancy ends. Thorough move-in and move-out documentation is essential to support any claim.
Is my unit exempt from rent increase guidelines?
If your unit was first occupied for residential purposes after November 15, 2018, it is exempt from the annual rent increase guideline under the RTA. However, you must still serve proper notice (N1) and cannot increase rent more than once every 12 months. If you are unsure about your unit's status, check with a licensed paralegal or consult Tribunals Ontario at tribunalsontario.ca.
What is the 2026 rent increase guideline in Ontario?
The Ontario rent increase guideline for 2026 is 2.1%. This is the maximum a landlord can increase rent for an eligible unit without filing an Above Guideline Increase (AGI) application with the LTB. AGI applications require documented evidence of extraordinary cost increases such as major capital expenditures or significant utility cost increases.
Do I need a property manager, or can I handle this myself?
Many landlords successfully self-manage — especially with one or two units in a familiar area. But the complexity increases significantly with multiple properties, out-of-province ownership, or challenging tenancy situations. A professional property manager handles tenant screening, maintenance coordination, LTB compliance, and financial reporting, which frees you to focus on growing your portfolio rather than managing day-to-day issues. Our post on what 500 landlords really think about property managers offers some honest perspective on this decision.
The Bottom Line
The mistakes covered in this article are not rare edge cases — they are the everyday reality for landlords who are navigating Ontario's complex rental landscape without the right systems in place. The good news is that every single one of them is preventable. With the right screening process, compliant documentation, a clear understanding of LTB procedures, and a disciplined approach to maintenance and finances, you can protect your investment and build a rental business that actually works.
At Blue Anchor, we manage properties across Belleville, Trenton, Cobourg, Oshawa, and Picton — and we have seen firsthand what separates landlords who thrive from those who burn out. If you are ready to stop making costly mistakes and start running your rental like a business, we would be glad to talk. Reach out to our team at blueanchorpm.rent to learn how we can help.
This article provides general information about Ontario landlord obligations and common property management mistakes. It is not legal or financial advice. For guidance specific to your situation, consult a licensed paralegal, lawyer, or qualified property management professional. Ontario rental law references are based on the Residential Tenancies Act, 2006, and regulations current as of 2026.
