Key Takeaways
- An apartment building appraisal for a property with five or more units is treated as a commercial valuation, where the income the building produces drives value.
- Appraisers rely heavily on the income approach, built from the rent roll, vacancy, operating expenses and net operating income (NOI).
- CMHC-insured financing, including MLI Select, calls for a well-supported valuation of the building’s income, rents, expenses and condition.
- Unit mix, deferred maintenance and rents that sit above or below market can move value more than many investors expect.
- Having your rent roll, leases, utility bills and tax bill ready before the inspection keeps the appraisal moving.
Why a 5+ Unit Building Is Valued as a Commercial Asset
A residential income property with five or more units is commonly treated as a commercial multifamily asset rather than a standard home. Buyers and lenders are paying for an income stream as much as a physical building, so an apartment building appraisal looks at rent, expenses and risk alongside condition and nearby sales.
Smaller two-, three- or four-unit properties may need a different report type, depending on the lender, the property use and the purpose of the assignment. For anything with five or more rental units, our AACI-designated team provides multifamily appraisal services for 5+ units across Ottawa, Toronto, Kingston, Sudbury and other Ontario markets. We prepare reports for lenders, mortgage brokers, owners, investors, accountants and lawyers who need a reliable opinion of market value.

How the Income Approach Works in an Apartment Building Appraisal
The income approach estimates value by converting the income a building can produce into a price. For 5+ unit properties it is often the central method, because investors are buying the income stream.
- The appraiser reviews actual rental income and the rents the market would support.
- Vacancy and collection loss are deducted.
- Operating expenses such as utilities, insurance, repairs, management, property taxes and maintenance are subtracted, with replacement reserves included where applicable.
- The result is a stabilized net operating income (NOI).
- That NOI is evaluated using market-supported capitalization rates or other income-based methods.
A building with strong rents, controlled expenses and stable occupancy will generally look more attractive to investors than a similar building with weaker performance. The sales comparison approach then confirms how buyers are pricing similar apartment buildings, with adjustments for location, size, unit mix, condition, parking and amenities. The cost approach may support newer or unusual buildings. If you want a deeper look at how these methods fit together across property types, our commercial real estate appraisal services cover the wider picture.
What Appraisers Review in Your Rent Roll and Expenses
Appraisers test whether the numbers in your rent roll are accurate, sustainable and in line with the market. They compare contract rents with market rents to see whether there is upside or risk, and they check that expenses are reasonable for a building of that size and age.
The documents below give the appraiser the evidence needed for each part of that analysis.
| Document | What it helps confirm |
|---|---|
| Current rent roll | Operating performance and stabilized NOI |
| Lease agreements | Rental terms, inclusions, renewals and responsibilities |
| Property tax bill | Assessment and annual tax expense |
| Utility bills and operating costs | Heat, hydro, water, insurance, repair and maintenance expenses |
| Capital improvement records | Renovations, energy upgrades and building system work |
| Zoning or legal use documentation | Permitted uses and the legal unit count |
Not every document will be available on day one. If something is missing, the appraiser can still discuss the scope of work and identify what is needed.
CMHC and MLI Select Financing Considerations
CMHC-related multifamily files need a valuation that clearly explains the building’s income, expenses, rent roll, market rents, physical condition and long-term income stability. National Appraisals completes appraisals for standard CMHC multifamily files and for MLI Select files.
According to CMHC, the MLI Select program is a multi-unit mortgage loan insurance product that applies to projects with at least five units and awards points for affordability, energy efficiency and accessibility. Depending on the file, an appraisal may look at the following:
- Existing rents, market rents and unit mix where affordability is part of the financing context.
- Building condition, capital improvements and utility expense patterns where energy performance is relevant.
- Building features, unit layouts and common areas where accessibility improvements are part of the file.
Program eligibility, lending terms and insurance approval remain subject to CMHC and lender requirements, so confirm the file type with your lender or broker before ordering.
How Unit Mix Affects Value
Unit mix affects value because different unit types attract different tenant groups and support different rent levels. Bachelor, one-bedroom, two-bedroom and larger units each carry their own demand and rent profile, so a building with a balanced, well-laid-out mix can look different to an appraiser than one concentrated in a single unit type.
Location works alongside unit mix. Proximity to transit, employment, schools, shopping and services all influence tenant demand and rents. For mixed-use buildings with five or more residential units, the appraiser analyzes the commercial and residential income streams separately, including lease structures, zoning and tenant risk.
Common Valuation Pitfalls Investors Overlook
Most valuation surprises come from assumptions made before the appraiser ever sees the file. These are the ones we see most often:
- Underestimating operating expenses. Utilities, insurance, repairs, management and property taxes all reduce NOI.
- Ignoring deferred maintenance. Roofs, windows, HVAC, plumbing and electrical systems can affect marketability and capital requirements.
- Overlooking legal use. The legal unit count and zoning permissions shape both value and highest and best use.
- Assuming one report fits every lender. Share the lender or CMHC instructions at the start so the intended use, intended users and valuation date are clear.
If your portfolio also includes smaller rental holdings, an investment property appraisal can show how rental income and market conditions affect their value too.
Prepare Your Next Multifamily Appraisal
Strong preparation shortens the process. Gather the documents above, confirm the intended use and valuation date, and tell the appraiser about any recent capital work. Our process runs from consultation and scope, through information collection and inspection, to market and income analysis, report review and delivery.
If you are weighing a purchase, refinance or CMHC file, call us on +1 888 887 4926 or order an appraisal online and we will confirm the scope with you.
Frequently Asked Questions
What is a 5+ unit multifamily appraisal?
A 5+ unit multifamily appraisal is a professional valuation of an apartment building or multi-unit residential income property with five or more rental units. It considers physical characteristics, market position, rental income, operating expenses and comparable sales to reach an opinion of market value for lenders, buyers and owners.
What documents do I need for an apartment building appraisal?
Helpful documents include the current rent roll, lease agreements, property tax bill, utility bills and operating costs, capital improvement records, floor plans or site plans, and zoning or legal use documentation. Lender or CMHC instructions also help confirm the intended use, users and valuation date before the appraisal begins.
Can National Appraisals complete CMHC and MLI Select appraisals?
Yes, for properties with five or more units. We complete standard CMHC multifamily files and MLI Select files involving affordability, energy efficiency or accessibility. Program eligibility, lending terms and insurance approval remain subject to CMHC and lender requirements, so confirm your file type with your lender or broker.


