Why would two buildings on the same street, one with four units and one with six, need completely different loans? An investor buying your first multi-family property often learns this the hard way while comparing a fourplex listing with a six-unit building. She has saved a down payment, but the six-unit building falls under commercial lending rules, while the fourplex is treated like a home.

That split surprises many first-time investors. The price on the listing gets the attention, but the loan often decides which building is realistic. Two buildings with similar prices can need very different amounts of cash and income to get approved.

The pages below show how CMHC multi-unit insurance, MLI Select, premiums, down payments and deal analysis fit together for a Canadian real estate investment. Each piece affects the financing, and each one changes how much cash investors need to bring. For most first-time investors, the right loan structure matters as much as the building itself.

Key Takeaways

• Buildings with two to four units use residential loans, and five or more units use commercial loans.
• A CMHC commercial mortgage is approved mainly on the building’s income, not the investor’s salary.
• The building’s net income must cover its mortgage payments at least 1.10 times.
• CMHC premiums on a purchase run from 2.60% to 6.15% of the loan.
• MLI Select gives better terms in return for affordability, energy or accessibility promises.
• Always use actual income and expense statements, not a seller’s sales sheet.

What Is a Multi-Family Home in Canada?

A multi-family home is one building with two or more self-contained units that each have their own kitchen, bathroom and entrance. In real estate, that is the plain answer to what a multi-family home is. The number of units then decides how a lender treats it.

The line falls at five units. Properties with two to four units are treated as residential for lending, while five or more units count as commercial. A fourplex and a six-unit building can look alike from the street, yet they go through different approval systems.

Common types range from small to large. A duplex has two units, a triplex has three and a fourplex has four. Above that come small apartment buildings and larger apartment complexes with dozens of units.

Each type of multifamily property can also count as a home for some government programs. A qualifying home under the Home Buyers’ Plan can include an apartment in a duplex, triplex, fourplex or apartment building. That matters for owners who plan to live in one of the units.

Some homes share walls but are not multi-family. Buying one half of a semi-detached house or one townhouse is a home purchase. The buyer owns one unit, not a building full of rental units.

Count only legal, self-contained units when classifying a building. A lender will not recognize an unpermitted basement suite.

This affects value as well as the loan type. A “triplex” with one illegal suite may be financed and appraised as a duplex. The asking price should reflect the legal unit count, not the number of doors.

Why a Multi-Family Investment Property Appeals to New Investors

When one unit of a fourplex is empty, three rents still arrive that month. That is the core appeal of a multi-family investment property for new investors. A single-family rental with no tenant goes 100% vacant, and the owner pays the whole mortgage alone.

A multi-family investment property is built to produce cash, not comfort for its owner. The value of five-plus unit buildings follows rents, so raising below-market rents raises the building’s value. That link gives investors a way to grow wealth that a house does not offer.

Multifamily properties offer four clear advantages over one house:

• Steadier income, because several rents arrive each month instead of one.
• Partial vacancy, since one empty unit leaves the others still paying.
• Faster portfolio growth, as a ten-unit building adds ten doors in one deal instead of ten purchases.
• Lower repair cost per unit, since new flooring in two units in one building costs less per unit than one separate house.

Each benefit supports a long-term investment strategy built on rental income. Still, every gain has a matching risk. More units also mean more tenants who share walls, driveways and hallways.

Those shared spaces lead to conflict. Noise at night, fights over parking and shift workers sleeping during the day all land on the owner. A single-family rental rarely creates these problems between tenants.

More units do not guarantee cash flow, so judge every building on its own expenses rather than its door count. A ten-unit building with an old boiler and high taxes can earn less than a well-run fourplex.

Single-Family or Multifamily First?

For most beginners, a duplex or triplex is the safer first step, and a small five-to-eight unit building comes next. Multi-family real estate investing for beginners works best when it starts small, not with a 30-unit complex. The size of the first deal should match the investor’s cash and experience.

A single-family home still has a strong case. Buyers of multi-unit buildings are mainly other investors, so the resale pool is smaller. A house can be sold to families, investors and first-time buyers, which makes the exit simpler in a slow market.

Single-family tenants also tend to stay longer. Fewer move-outs mean fewer empty months and less cleaning between tenants. The trade-off is that one empty house means zero rent.

A duplex is often the most balanced first step. It brings two incomes but keeps the work manageable. A triplex adds one more rent without much more complexity.

For a first commercial purchase, small buildings of five, six or eight units suit better than large ones. The risk is spread across several units, but the problems stay at a size one owner can learn from. Larger properties bring staff, contracts and bigger repair bills.

Some investors should skip multifamily at first. If there is no reserve to carry an empty unit, a single vacancy can strain the budget. An investor who cannot cover two months of the full mortgage without rent should start smaller.

How a CMHC Commercial Mortgage Works

An investor buying an eight-unit building borrows from a bank, and CMHC insures that loan so the bank lends more on better terms. The investor does not borrow from CMHC. CMHC protects the lender if the loan goes bad.

Three parties play a role. The investor borrows from a bank or credit union, CMHC insures the lender, and the investor pays the insurance premium. Because the lender’s risk of loss is lower, an insured loan can come with a lower interest rate.

CMHC’s multi-unit mortgage loan insurance supports the construction, purchase and refinancing of multi-unit rental properties. A first-time investor will most often use it to buy. Later, the same insurance can help refinance once rents rise.

Qualifying for this financing works differently from a home loan. A commercial mortgage is judged mainly on the building’s profitability. The lender also looks at the investor’s experience, the location, the building’s condition and its occupancy.

The investor’s personal finances still matter. Lenders review credit history, net worth and the cash left over after closing, called remaining liquidity. A strong building will not save an application from a borrower with no savings left.

In real estate lending, these loans are a specialty. Ask the lender early whether it offers CMHC-insured multi-unit loans, since not every branch handles them.

Who Qualifies for CMHC Multi-Unit Insurance

A building needs at least five rental units and enough net income to cover its mortgage at least 1.10 times. Both tests apply together, so a large building with weak rents can still fail. The rules also limit how much of a property can be used for shops or offices.

The debt coverage ratio (DCR) is the building’s net operating income divided by its annual mortgage payments, showing how many times the rent covers the debt. The minimum DCR is 1.10 for standard rental housing. Lenders treat it as the main test of whether the loan is safe.

Minimum Unit Counts

MLI Select is available for eligible new and existing rental projects with at least 5 units. That matches the line where a building becomes a commercial multi-unit property. A fourplex cannot use this program.

Retirement homes face a higher bar. They require at least 50 units or beds to qualify. Most first-time investors will not meet that threshold.

Debt Coverage Ratio Requirements

The DCR math is simple division. A building with NOI of $110,000 that covers $100,000 of annual mortgage payments has a DCR of 1.10. That property meets the standard rental minimum exactly.

Other uses need more cushion. The minimum DCR is 1.20 for other shelter models and 1.4 for non-residential space. A lower DCR usually means the investor must borrow less or put more money down.

Limits on Commercial Space

Many older buildings have a store or café on the ground floor. Non-residential space must not exceed 30% of gross floor area or 30% of total lending value. Either measure can push a property out of the program.

A common mistake is buying a mixed-use building whose shops take up more than 30% of the floor area. The investor then needs a regular commercial loan with stricter terms. Measure the commercial floor area before making an offer on a mixed-use building, since 31% disqualifies it.

MLI Select Points for Affordability, Energy and Accessibility

MLI Select rewards investors with better financing terms for committing to affordability, energy efficiency or accessibility. Each promise earns points, and more points unlock better terms. These rewards help investors buy housing they could not finance as easily otherwise.

The three commitment categories work in different ways. Affordability limits the rent on some units, energy efficiency means cutting the building’s energy use, and accessibility means making units easier to use for people with disabilities. Investors buying an existing building most often earn points through affordability.

Affordability Commitments

Affordability commitments must last at least 10 years. A 20-year commitment earns an additional 30 points. Those extra points can move a building into a better financing tier.

The promise stays with the property for its full term. An investor who sells early passes the commitment to the buyer. That can narrow the pool of buyers willing to take on the building.

Rent Increase Limits on Affordable Units

Rents on designated affordable units cannot rise more than provincial or territorial rules allow during the commitment. Where no such rules apply, increases are limited to the applicable consumer price index. This keeps the rent on those units close to inflation.

The trade-off shows up in income over time. Capped rents reduce future NOI growth, since those units cannot catch up to market rents. Lower NOI growth also slows how fast the building’s value rises.

That cost has to be weighed against the better loan terms. Lower financing costs today can outweigh smaller rent gains, but not always. Model the capped rents for the full commitment term before signing, since a 20-year promise outlasts most first loans.

How Much CMHC Premiums Cost

For buying an existing rental building, the base premium runs from 2.60% to 6.15% of the loan depending on LTV. LTV, or loan-to-value ratio, is the loan divided by the building’s value. The higher the LTV, the more the insurance costs.

CMHC uses a standardized premium grid for applications on or after July 14, 2025. Rates vary by LTV, loan purpose and building type. A $1,000,000 purchase loan at 80% LTV carries a 4.35% premium, about $43,500.

Base Premiums by Loan-to-Value

For standard rental buildings, purchase loans at 65% LTV or less carry a 2.60% premium. The rate rises to 2.85% at 70% or less, 3.35% at 75% or less and 4.35% at 80% or less. At 85% or less, it reaches 5.35%.

MLI Select allows higher borrowing at higher cost. Purchase loans at 90% or less carry 5.90%, and loans above 90% carry 6.15%. Construction loans cost more at each level, from 3.25% up to 7.00%.

The premium is usually added to the loan rather than paid in cash. In the $43,500 example, the investor finances it along with the purchase. That raises each monthly payment slightly over the life of the loan.

Surcharges That Raise the Premium

Some features of a loan add to the base rate. Four surcharges can apply:

• 0.25% for every 5 years of amortization beyond 25 years.
• 1.00% on the portion of the loan tied to non-residential space.
• 0.50% for a second mortgage, charged on the first mortgage’s balance.
• 0.25% on term loans when effective gross income targets are not met at first advance, not applied to construction loans.

Price the premium at two LTV levels, since dropping from 85% to 80% cuts the purchase rate by a full percentage point.

Down Payment for a Duplex, Triplex or Larger Building

The same triplex can require 10% down if the buyer lives in it and 20% or more if he rents all three units. Whether the owner lives there changes the rules more than the price does. Lenders see an owner on site as lower credit risk.

Smaller owner-occupied homes need the least cash. An owner-occupied duplex can need as little as 5% down. Buying a 3-family house to live in usually needs 10% down, and the same applies to a fourplex.

Personal-use property has its own rules again. A cottage falls under vacation home mortgages, which work differently from rental buildings. Those loans should not be confused with financing for investment properties.

Rental-only buildings need more. A non-occupied triplex rental typically needs 20% or more of the purchase price. The lender counts only the rent, not the owner’s housing need.

Five-plus unit buildings follow commercial rules. A conventional commercial loan usually needs 25% of the purchase price, while CMHC insurance often brings that to about 15%. MLI Select premiums apply up to and above 90% LTV for investors who earn enough points.

Location also matters. Lenders may ask for more down in small towns that depend on one employer, since a plant closing can empty a whole apartment building. Add closing costs and the CMHC premium to the down payment figure, since lenders check the full cash requirement.

The Stress Test and Uninsured Mortgages

A buyer offered 4.5% must qualify as if paying 6.5%. This rule applies to uninsured mortgages, where the buyer puts down enough to skip insurance. It checks whether the borrower could handle a higher rate later.

OSFI, the federal banking regulator, sets the rule. The minimum qualifying rate is the greater of the contract rate plus 2% or 5.25%. At 4.5%, adding 2% gives 6.5%, which is higher than 5.25%, so 6.5% applies.

Federally regulated lenders must apply this rate to most newly underwritten uninsured residential mortgages. That covers loans on homes and small residential multiplexes of two to four units. The borrower’s income must carry the payment at the higher rate.

Five-plus unit loans work differently. A CMHC commercial mortgage is judged on the building’s DCR, not this personal income test. That is one reason some investors with modest salaries move up to commercial buildings.

The stress test can limit how much a buyer of a fourplex can borrow. A higher qualifying rate means a smaller loan on the same income and credit. Rental income from the other units may count, but lenders often use only part of it.

The rule is not expected for an uninsured straight switch at renewal. At renewal, switching lenders without adding to the balance or the amortization avoids requalifying at the higher rate.

Steps to Buying Your First Multi-Family Property

The first step is setting firm criteria and confirming financing before viewing any building. How to buy a multi-unit property starts with a lender conversation, because five-plus approval depends on the building itself. A lender can say early which kinds of property it will finance.

Criteria keep the search focused. Define property type, location, condition, price range and target return before looking at listings. Without them, an investor can waste weeks on buildings that will never qualify.

Buying your first multi-family property follows a clear order:

1. Set criteria for type, area, condition, price and return.
2. Get pre-qualified with a lender experienced in CMHC multi-unit insurance.
3. Find listings through agents, brokers or off-market contacts.
4. Analyze the numbers for each building.
5. Make a conditional offer.
6. Complete due diligence and close.

Where listings appear depends on size. Multi-family homes for sale under five units usually show up on regular listing sites through real estate agents. Larger buildings are sold mainly through commercial brokers and commercial listing portals.

Some of the best deals never reach a listing. Off-market buildings come from direct mail, driving through neighbourhoods and networking with owners. An owner tired of managing tenants may sell before calling an agent.

Learning before buying helps at each step. Free mortgage webinars for investors cover financing new units and improving cash flow, with time for questions. Make every offer conditional on financing and inspection, since CMHC approval for a five-plus building can take weeks.

How to Analyze a Deal: NOI, Cap Rate and Cash Flow

For five-plus unit buildings, lenders and appraisers value the building on its income, not on comparable sales. A house is priced by what nearby houses sold for. An apartment building is priced by what its rents produce.

Three numbers do most of the work: NOI, cap rate and cash flow. Value equals NOI divided by the cap rate. If the income data is wrong, every other number is wrong too.

Net Operating Income and Cap Rate

Net operating income is yearly rent and other income minus operating costs. It leaves out mortgage payments and capital expenditures such as a new roof. Taxes, insurance, utilities and repairs all come out first.

The cap rate turns that income into a value. A building with $500,000 NOI at a 5% cap rate implies a value of $10,000,000. A lower cap rate in a strong market means a higher price for the same income.

Cash Flow and Cash-on-Cash Return

Cash flow is what remains after the mortgage is paid. A common rule of thumb targets about $100 of cash flow per unit per month. A five-unit building should leave about $500 a month after all costs.

Cash-on-cash return compares yearly cash flow to the cash invested. Many investors aim for 8-12%. Budget 5-10% of rent for repairs and set aside about 1% of value yearly for maintenance.

A Worked Example for a Five-Unit Building

Take a five-unit building bought for $1.4 million with $90,000 of net annual income. Dividing the price by the income gives a net income multiplier of about 15. A range of 10-16 is a common target, so this number passes.

A common mistake is trusting seller or broker expense estimates. Those figures often leave out vacancy, repairs or management. Ask for two to three years of actual income and expense statements, since a sales sheet is written to sell.

What to Check Before Making an Offer

An investor who skips the city records check can inherit the previous owner’s unpaid fines. Problems with a property often hide in paperwork, not just walls. A few checks before the offer prevent costly surprises.

Location matters more than the listing price. The best area to buy has rental demand, transit and job growth, not the cheapest listing. A cheap building in a weak market can sit half empty for years.

Five checks belong on every list:

• Building condition, including windows, insulation, wiring and plumbing.
• Sales history, since a property that changed hands every two to three years is a red flag.
• Location, including transit, jobs, schools and local vacancy data.
• Municipal records at the city and rental board for unpaid taxes, fines or violation notices.
• Tenant conversations about water damage, mould and neighbours.

A building inspection covers the structure, and an environmental assessment covers the land. Old fuel tanks or past industrial use can create cleanup costs. Lenders may require the assessment before approving a commercial loan.

The type of units affects how often tenants leave. Units with at least three rooms tend to have lower turnover. Rooming houses and short-term rentals carry higher turnover and more work in this market.

Talk to at least two current tenants, since they reveal leaks and conflicts no report shows.

Rent Rules by Province That Shape Your Income

In Alberta and British Columbia, rent can go up only once every 12 months. Rent increase rules vary by province and territory, so the same building earns differently in each place. These rules decide how fast income can grow each year.

Alberta requires 12 months after move-in before an increase, then 12 months between increases. British Columbia follows the same 12-month rules. A new owner cannot raise rents right after buying just because he wants to.

Other provinces set different limits. Manitoba requires at least 3 months’ written notice before an increase. New Brunswick allows one increase every 12 months unless the landlord and tenant agree otherwise in writing.

These timelines matter for real estate math. An increase in a deal model that cannot happen for a year leaves a gap between projected and actual income. Lenders also tend to use current rents, not hoped-for ones.

A common mistake is budgeting renovations on below-market rents that cannot be raised soon. An investor may spend $20,000 on a unit whose tenant stays at the old rent. The upgrade pays off only when the unit turns over or a legal increase applies.

Read the provincial residential tenancy act before projecting any rent increase into the numbers.

Managing Tenants After the Purchase

A noise complaint at 11 p.m. lands on the owner unless a manager handles it. Managing multifamily properties is a daily job, not a monthly one. Every owner must decide whether to do it alone or pay someone.

Property managers screen tenants for income, credit and references. One non-paying tenant who damages a unit can cost more than a year of management fees. Good screening is often worth the fee alone.

Tenant mix also matters in buildings with several units. Noise, parking and different work schedules create conflict between neighbours. A manager learns to place tenants who fit the building.

First-time investors often benefit from a manager, even if cash flow narrows. The fee buys experience with leases, notices and repairs. It also reduces costs from mistakes that new owners make.

Self-managing works best in some cases. An owner living on site in a small multiplex can handle issues quickly and cheaply. Investors who live far away usually struggle to manage on their own.

Get quotes from at least three property managers before closing, since fees differ by area.

How to Buy a Multifamily Property With Little Money Down

A triplex with a $1,500 monthly mortgage and two units rented at $650 each leaves the owner paying just $200. This is called house hacking, and it is the most realistic low-cash path. The owner lives in one unit while the others pay most of the loan.

Buying a multifamily property with no money of one’s own is rare. Lenders still require cash for closing costs and reserves. The aim is to lower the cash needed, not to bring nothing.

Several options can help an investor buy multifamily property with less cash:

• House hacking, where rents from other units cover most of the mortgage.
• Refinancing equity from another property to fund the down payment.
• Partnering with a family member or private investor who brings cash.
• Using MLI Select for high LTV loans on five-plus unit buildings.

Each investment strategy has costs. A refinance adds debt to another property in the portfolio. A partner shares profits and decisions, so the agreement should be in writing.

Owners should keep about 10% of the building’s value available for surprises, separate from the down payment.

High LTV loans make that cushion more important. A larger loan means higher payments and less room for error. One major repair, such as a roof or boiler, can wipe out a thin cash cushion fast.

Conclusion

A first multi-unit purchase succeeds when the building’s income, not hope, supports the loan. Unit count decides the loan type. Two to four units means a residential mortgage, while five or more means a CMHC commercial mortgage judged on the building.

For commercial multifamily properties, income must clear the DCR. If the NOI cannot cover the payments at least 1.10 times, the deal needs more cash, a lower price or a different building. The numbers decide, not the listing photos.

The next step is practical. Gather a target building’s actual income statements and book a meeting with a lender experienced in CMHC multi-unit insurance.