WHY ONTARIO REIs SHOULD BE TARGETING 5-UNIT BUILDINGS (NOT TRIPLEXES OR FOURPLEXES)
- Henry Matthew Silva Rojas
- Dec 15, 2025
- 2 min read
Most Ontario investors aim for duplexes, triplexes, or fourplexes.
But the biggest jump in long-term wealth and financing power comes when you cross into five units or more. This blog explains why 5-plex conversions make more financial sense — and why REIs should stop thinking of properties as “houses” and start thinking in square footage and income potential.

5+ Units Unlock Commercial Financing
Once your building hits five units, lenders treat it as a commercial income asset, not a residential one.
Benefits include:
DSCR-based approval
Better amortization options
Income-based lending decisions
Higher refinancing potential
Less reliance on personal income
This alone can change an investor’s entire growth trajectory.
Your Value Is Based on Income — Not Comps
Triplexes and fourplexes are capped by residential comparables.Your neighbour’s sale affects your value.
A 5-plex is valued using the income approach (NOI ÷ cap rate).
Meaning:
Operate better → value increases
Improve layouts → value increases
Raise rents → value increases
You control the appreciation.
You Often Only Need ~2,500 Sq. Ft. to Hit 5 Units
Most older Ontario buildings have:
Large basements
Attics with full head height
Oversized floorplates
Space for small rear additions
REIs underestimate how much density is already achievable — often without planning applications — if zoning already allows it as-of-right.
Parking Requirements Are No Longer a Barrier
Many municipalities have reduced or removed minimum parking requirements for new units.
This opens the door for 5-unit conversions even on smaller urban lots. More units = more resilience.
Vacancies impact revenue less
Repairs are absorbed more easily
Overall NOI increases
Investors gain long-term stability.
Your building functions like a true commercial asset. Cashflow Becomes More Stable More units = more resilience.
Vacancies impact revenue less
Repairs are absorbed more easily
Overall NOI increases
Investors gain long-term stability.
Your building functions like a true commercial asset. The ROI on Renovation Costs Is Dramatically Higher You’re already paying for:
Fire separations
Electrical upgrades
Mechanical improvements
New layouts
Permit drawings
The incremental cost of adding the 4th and 5th units is often small compared to the increased income and appraisal value. How Rojas Empire Helps Investors Execute 5-Unit Strategies We support investors by:
Assessing realistic density potential
Evaluating zoning & as-of-right permissions
Designing efficient, code-aligned unit layouts
Preparing permit-ready drawings
Leveraging 3D scans for accuracy
Coordinating with inspectors & engineers
Our goal is simple: Turn your building into a high-performing commercial income asset. Final Thoughts A triplex creates income. A 5-plex builds wealth.
If you’re considering a conversion, reach out — we’ll review your property and show you what’s possible.





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