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Buying a Multiplex in Canada: Duplexes, Triplexes, and Fourplexes as Investments (2026)

Updated

Small multiplexes — duplexes, triplexes, and fourplexes — are the most powerful wealth-building tool available to Canadian real estate investors. When you live in one unit (house hacking), you get owner-occupied financing with as little as 5% down, your tenants cover most or all of your mortgage, and you start building a rental portfolio from day one. This guide covers everything: financing rules, cash flow analysis, and how to evaluate a multiplex deal.

Multiplex Overview: 2–4 Units

Property Type Units Owner-Occupied Down Payment Investment Down Payment CMHC Insurable?
Duplex 2 5% (up to $500K) / 10% ($500K–$1.5M) 20% Yes (owner-occupied)
Triplex 3 5% (up to $500K) / 10% ($500K–$1.5M) 20–25% Yes (owner-occupied)
Fourplex 4 5% (up to $500K) / 10% ($500K–$1.5M) 25% Yes (owner-occupied)
5+ units 5+ N/A — classified as commercial 25–35% No — commercial mortgage required

Key rule: Properties with 1–4 units are classified as residential. Five or more units enter commercial mortgage territory with different rules, rates, and qualification criteria.

Why Owner-Occupied Multiplexes Are the Best Beginner Strategy

Advantage Details
Lowest down payment 5% (vs 20% for investment property) — saves $60,000–$150,000 in upfront capital
Best mortgage rates Owner-occupied rates are 0.25–0.5% lower than investment rates
Rental income helps qualify Lenders add 50–100% of other-unit rental income to your qualifying income
Built-in cash flow 1–3 rental units generating income from day one
First-time buyer programs apply FHSA, HBP, first-time buyer tax credits all work on owner-occupied multiplexes
On-site management Live next to your tenants — easier to manage, no travel costs
Learn before scaling Low-risk introduction to property management
Builds equity faster Multiple rental incomes accelerate mortgage paydown

Down Payment Examples

Owner-Occupied (You Live in One Unit)

Purchase Price Down Payment (5% up to $500K, 10% on $500K–$1.5M) CMHC Premium (~4%) Total Mortgage
$400,000 $20,000 (5%) $15,200 $395,200
$600,000 $35,000 $22,600 $587,600
$800,000 $55,000 $29,800 $774,800
$1,000,000 $75,000 $37,000 $962,000
$1,200,000 $95,000 $44,200 $1,149,200

Non-Owner-Occupied Investment

Purchase Price Down Payment (20%) CMHC Premium Total Mortgage
$400,000 $80,000 None $320,000
$600,000 $120,000 None $480,000
$800,000 $160,000 None $640,000

The capital difference is massive — $20,000 vs $80,000 for the same $400,000 duplex.

Cash Flow Analysis: Owner-Occupied Duplex

Property Details

Item Value
Purchase price $500,000
Down payment (5%) $25,000
CMHC premium (4%) $19,000
Total mortgage $494,000
Mortgage rate 4.5%, 25-year amortization
Location Calgary, AB

Income and Expenses

Item Monthly
Rental income (Unit 2) $1,800
Vacancy reserve (5%) –$90
Effective rental income $1,710
Expense Monthly
Mortgage payment $2,726
Property tax $350
Insurance $200
Maintenance reserve (5% of total rent) $90
Capex reserve (5% of total rent) $90
Total expenses $3,456
Result Monthly
Total expenses $3,456
Rental income (effective) –$1,710
Your net housing cost $1,746
Comparable rent for the same unit ~$1,800
Monthly savings vs renting $54 + equity building

You live for less than a comparable rental, build equity through mortgage paydown (~$600/month in year 1), and benefit from any property appreciation — all with just $25,000 down.

Cash Flow Analysis: Owner-Occupied Triplex

Property Details

Item Value
Purchase price $700,000
Down payment (5% on $500K + 10% on $200K) $45,000
CMHC premium $26,200
Total mortgage $681,200
Rate 4.5%, 25-year

Income and Expenses

Item Monthly
Rent — Unit 2 $1,600
Rent — Unit 3 $1,500
Total gross rent $3,100
Vacancy (5%) –$155
Effective rental income $2,945
Expense Monthly
Mortgage payment $3,758
Property tax $500
Insurance $280
Maintenance (5%) $155
Capex (5%) $155
Total expenses $4,848
Result Monthly
Total expenses $4,848
Rental income –$2,945
Your net housing cost $1,903
Mortgage principal paydown (your benefit) +$830/month

Two tenants cover 61% of all expenses. Your effective housing cost is $1,903/month for a unit in a triplex — while building $830/month in equity.

Cash Flow Analysis: Non-Owner-Occupied Fourplex

Property Details

Item Value
Purchase price $900,000
Down payment (25%) $225,000
Mortgage $675,000 at 4.75%, 25-year

Income

Unit Monthly Rent
Unit 1 (2BR) $1,500
Unit 2 (2BR) $1,500
Unit 3 (1BR) $1,200
Unit 4 (1BR) $1,200
Gross monthly rent $5,400
Vacancy (5%) –$270
Effective gross income $5,130

Expenses

Expense Monthly
Mortgage payment $3,856
Property tax $650
Insurance $350
Maintenance (5%) $270
Capex (5%) $270
Property management (8%) $432
Miscellaneous $50
Total expenses $5,878
Result Monthly Annual
Net cash flow –$748 –$8,976
Mortgage paydown +$1,000 +$12,000
Appreciation (3%) +$2,250 +$27,000
Tax savings +$400 +$4,800
Total return — $34,824 on $225,000 = 15.5%

What to Look For in a Multiplex

Factor What to Check
Legal status Are all units legally registered? Check with the municipality. Illegal suites can be shut down
Separate utilities Individually metered units let you pass utility costs to tenants — major cash flow impact
Separate entrances Tenants strongly prefer their own entrance; easier to manage; required in many bylaws
Parking At least one spot per unit in most markets; street parking only reduces tenant quality
Unit condition Each unit should be rentable without major renovation (for your first deal)
Current rents vs market If current rents are below market, there’s upside when tenants turn over
Zoning Verify the property is zoned for the number of units (R-2 for duplex, R-3 for triplex, etc.)
Roof, furnace, hot water, electrical Big-ticket items — inspect thoroughly. One roof + one furnace for 4 units is cheaper than separate systems
Lot size and configuration Is there room for a laneway suite or garden suite addition in the future?
Neighbourhood trajectory Employment, transit, infrastructure investment, population trends

Insurance for Multiplexes

Coverage Details
Owner-occupied duplex Standard homeowner policy with landlord endorsement for rented unit(s)
Non-owner-occupied multiplex Landlord / rental property policy (different from homeowner)
Tenant insurance Require all tenants to carry tenant insurance (protects their belongings and adds liability coverage)
Liability limits $2M minimum recommended for rental properties
Sewer backup, flood, earthquake Add riders as needed for your area
Loss of rental income Covers lost rent if a unit becomes uninhabitable due to covered damage

Tax Treatment of Owner-Occupied Multiplex

Tax Aspect Treatment
Rental income Taxable at your marginal rate
Expense deduction Proportionate share (based on rental square footage ÷ total square footage)
Example: you live in 1 of 3 units (equal size) 66.7% of expenses deductible against rental income
Deductible expenses Mortgage interest, property tax, insurance, maintenance, utilities (if landlord pays), advertising, management fees
CCA (depreciation) Available on the rental portion but triggers recapture on sale — most accountants advise against
Principal residence exemption Applies to your unit only; capital gains tax applies to the rental portion when you sell
Capital gains on sale Rental portion is subject to capital gains (50% inclusion rate; 66.7% on gains over $250K/year)

Tax Example: Owner-Occupied Triplex (You Live in Unit 1)

Expense Annual Total Rental Portion (66.7%) Deductible
Mortgage interest $28,000 $18,676 $18,676
Property tax $6,000 $4,002 $4,002
Insurance $3,360 $2,241 $2,241
Maintenance $3,000 $2,001 $2,001
Total deductible — — $26,920
Rental income — $37,200 —
Net rental income — — $10,280
Tax owed (at 30%) — — $3,084

Without the deductions, you’d pay tax on $37,200 in rental income ($11,160 at 30%). The deductions save $8,076 per year.

Multiplex Financing Tips

Tip Details
Use a mortgage broker Broker access to multiple lenders = better rate and more flexible rental income calculation
Get an appraisal that reflects income Income approach may yield higher appraised value for multiplexes
Keep clean records Lenders want to see existing lease agreements, rental history, and expense records (especially for resale multiplexes)
Be prepared for longer approval Multiplex mortgages require more documentation than single-family
Consider CMHC MLI Select For larger multiplexes (5+ units), CMHC MLI Select offers premium reductions for energy-efficient and affordable housing
Plan your exit Know whether you’ll continue house hacking, move out and convert to full rental, or sell — each has different tax and financing implications

Where to Find Multiplexes

Source Details
Realtor.ca Filter by “Multi-family” or “Duplex/Triplex”
MLS through your agent Access to multiplexes before they hit public portals
For Sale By Owner (FSBO) sites Kijiji, Facebook Marketplace, DuProprio (Quebec)
Driving for dollars Many multiplexes sell off-market; look for tired properties in good locations
Wholesalers Off-market deals at discounted prices (verify numbers independently)
Estate sales Often priced to sell quickly
Word of mouth Tell everyone you know you’re looking — many multiplex owners are aging and ready to sell
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