Top 10 Mistakes GTA Landlords Make in Ontario
Aug 10th, 2026
Introduction
Owning rental property in the Greater Toronto Area can be an excellent way to build long-term wealth. But being a successful landlord involves much more than finding a tenant and collecting rent.
After years of working with rental properties and landlords across the GTA, we've found that many expensive problems start with relatively small decisions.
The good news? Most are preventable.
Here are 10 of the most common mistakes we see GTA landlords make—and what to do instead.
1. Choosing a Tenant Too Quickly
A vacant property costs money, so there's an understandable temptation to approve a tenant quickly.
But vacancy is a short-term expense. A poor tenant can become a long-term one.
Proper tenant screening should include more than looking at a credit score. Depending on the circumstances, it can involve:
- Credit history
- Income and employment verification
- Rental history
- References
- Identity and document verification
- Consistent qualification criteria
The objective isn't to find a "perfect" tenant. It's to make a well-informed, legally compliant decision based on reliable information.
The better approach: Never allow the pressure of an empty property to compromise your screening standards.
2. Pricing the Property Based on What You Want
Your mortgage payment doesn't determine what your property is worth on the rental market.
Neither does what your neighbour says their property rented for last year.
The market determines the rent.
One of the biggest mistakes landlords make is listing above market value and deciding they'll "see what happens."
Suppose the realistic market rent is $3,000 per month, but you hold out for $3,200. Losing just one month of rent while waiting costs $3,000.
Even if you eventually achieve the extra $200, it would take 15 months just to recover that one month of vacancy.
The better approach: Price against current competition and recent comparable leases, and consider total annual rental income rather than obsessing over the highest possible monthly rent.
3. Treating the Rental Like a Hobby Instead of a Business
This is particularly common among accidental landlords.
They may have moved into another home, inherited a property or decided to keep their previous residence as an investment.
Suddenly, they're running a small rental business without necessarily thinking of themselves as business owners.
That can lead to informal arrangements, inconsistent documentation and decisions based on emotion.
The better approach: Establish systems for rent collection, maintenance, record keeping, tenant communication and regulatory compliance from day one.
4. Waiting Too Long When Rent Isn't Paid
A good landlord can be compassionate without being passive.
When rent is late, some landlords wait days or weeks because the tenant promises payment is coming.
Unfortunately, if the situation deteriorates, that lost time can become extremely expensive.
The better approach: Communicate immediately, document what is happening and understand when the formal Ontario non-payment process should begin.
Starting the appropriate process doesn't prevent you from working constructively with your tenant. It protects your options if the problem isn't resolved.
5. Not Understanding Ontario's Residential Tenancies Act
Ontario has a highly regulated residential rental environment.
Landlords need to understand rules involving areas such as:
- Rent increases
- Entry into rental units
- Maintenance obligations
- Deposits
- Notices
- Evictions
- Tenant privacy
- Rent control
One incorrect assumption can create an expensive problem.
And relying on advice from Facebook groups, friends or other landlords isn't a substitute for checking the actual rules.
The better approach: When a significant decision involves the Residential Tenancies Act or Landlord and Tenant Board process, verify the current requirements before acting.
6. Using the Wrong Notice — or Using the Right Notice Incorrectly
Ontario landlord forms aren't interchangeable.
An N4, N5, N8 and N12, for example, deal with very different circumstances.
Even when you've selected the correct form, seemingly small mistakes involving dates, amounts, service or termination requirements can potentially derail the process.
The better approach: Don't treat an LTB notice as an informal warning letter. It's a legal document. Make sure the circumstances justify it and that it is completed and served correctly.
7. Neglecting Preventive Maintenance
Some landlords view maintenance as something that happens when something breaks.
That's usually the expensive way to manage property.
Small plumbing leaks, aging caulking, HVAC problems and exterior drainage issues can become much larger repairs when ignored.
Preventive maintenance also affects tenant satisfaction. Good tenants are more likely to remain in properties that are well maintained.
The better approach: Think of maintenance as protecting an asset rather than simply paying an expense.
8. Failing to Document Important Interactions
If a disagreement reaches the Landlord and Tenant Board months later, your memory of what happened isn't particularly strong evidence.
You want records.
That can include:
- Lease documents
- Rent ledgers
- Emails and written communication
- Maintenance records
- Inspection documentation
- Photographs
- Copies of notices and evidence of service
The better approach: Operate as though you may eventually need to reconstruct the history of the tenancy for someone who knows absolutely nothing about it.
9. Automatically Chasing the Maximum Rent Increase
Maximizing rent and maximizing investment returns aren't always the same thing.
Consider a great tenant who pays on time, takes care of the property and rarely creates problems.
If aggressively increasing rent contributes to that tenant leaving, the landlord may incur:
- Vacancy
- Cleaning
- Repairs
- Marketing costs
- Leasing expenses
- Time spent screening applicants
- The uncertainty of a new tenant
Sometimes increasing rent to the maximum permitted amount makes perfect sense.
Sometimes keeping an exceptional tenant does.
The better approach: Evaluate rent increases as an investment decision, not an automatic annual exercise.
10. Underestimating the Value of Their Own Time
This is the mistake many landlords never calculate.
Self-management appears free because there isn't a monthly management invoice.
But your time has value.
Consider the hours spent:
- Answering tenant messages
- Coordinating contractors
- Handling emergencies
- Tracking rent
- Conducting inspections
- Keeping up with Ontario regulations
- Preparing notices
- Marketing vacancies
- Showing properties
- Screening applicants
For an investor with several GTA properties—or an owner living outside Canada—the workload can become significant.
The right question isn't simply:
"How much does property management cost?"
It's:
"What is my time worth, what risks am I carrying, and where is my time best spent?"
For some landlords, self-management remains the right answer.
For others, professional management allows them to stop managing individual problems and start managing their overall investment portfolio.
The Common Thread: Most Landlord Problems Are Easasier to Prevent Than Fix
Look back through these 10 mistakes and you'll notice something.
Most serious landlord problems don't begin with an eviction notice or an LTB hearing.
They begin much earlier:
A tenant wasn't screened properly.
The property was overpriced.
A maintenance issue wasn't addressed.
A late payment wasn't dealt with.
Something important wasn't documented.
That's why good property management is fundamentally about risk management.
Final Thoughts
Successful GTA landlords don't eliminate every problem. That's impossible.
They build systems that make problems less likely and respond quickly when something does go wrong.
Whether you own one rental property or ten, approaching your portfolio like a business can make the difference between an investment that builds wealth and one that constantly demands your attention.
Own Rental Property in the GTA?
Owl's Nest Property Management specializes in helping small and independent landlords throughout the Greater Toronto Area.
Our focus is intentionally local. We understand the GTA rental market and Ontario's regulatory environment, and we help landlords manage the entire rental lifecycle—from leasing and tenant screening through rent collection, maintenance and ongoing management.
If you're wondering whether your current approach could be improved, we'd be happy to have a conversation.
Owl's Nest Property Management
Better Tenants. Less Stress. Higher Returns.
