Multifamily residential is the largest institutional commercial real estate asset class in North America by transaction volume, a position it has held through multiple market cycles. The structural demand case rests on three converging forces: demographic formation (millennials and Gen Z delaying homeownership longer than prior generations), supply constraints in the higher-density submarkets where rental demand concentrates, and the growing cost gap between renting and owning in most major metro areas.
Per NCREIF's Open-End Diversified Core Equity index, multifamily has delivered more consistent income returns than any other core asset class over rolling 10-year periods, making it the default allocation for institutional investors seeking stable cash flow.
Underwriting a multifamily acquisition begins with per-unit economics. Operators benchmark rent per unit per month and rent per square foot against the competitive set, track economic vacancy (collected rent versus potential rent, adjusted for concessions and non-payment) rather than physical vacancy, and target expense ratios (total operating expenses as a percentage of effective gross income) that vary by asset class: garden-style workforce housing typically runs 45-55%, mid-rise market-rate properties 40-50%, and high-rise luxury buildings 50-60% due to elevator, amenity, and staffing costs.
Cap rates at acquisition similarly vary by subtype: luxury urban high-rise has traded sub-4.5% in major Canadian and US markets through the 2020-2023 cycle; workforce and affordable product has traded 100-150 basis points wider due to regulatory and re-tenanting risk, per CBRE's North American Cap Rate Survey.
The financing stack for multifamily is the most institutionalized of any CRE asset class. In the United States, Fannie Mae and Freddie Mac Delegated Underwriting and Servicing (DUS) programs provide the dominant permanent debt source: agency loans carry fixed rates, 10-year terms, 30-year amortization, and maximum LTVs of 75-80% on stabilized assets, with pricing spread over the 10-year Treasury.
In Canada, CMHC's MLI Select program offers the most attractive terms for purpose-built rental: maximum LTV up to 95%, 50-year amortization on qualifying projects, and insured spreads materially tighter than conventional commercial mortgage rates. Value-add and construction-phase assets use bridge debt (typically 65-75% LTV, floating rate over SOFR or CORRA) or construction loans before transitioning to agency or conventional permanent financing at stabilization.
The valuation methodology for multifamily shifts depending on where rents sit relative to market. When in-place rents are at or near market, the income approach (direct capitalization of stabilized NOI) is the primary method, and the cap rate drives value.
When in-place rents are materially below market (a common condition in rent-controlled buildings or long-held family portfolios), buyers underwrite to value-per-door: the price per unit reflects the mark-to-market rent potential over time rather than current yield. This distinction matters in negotiation; a seller pricing on as-is cap rate and a buyer pricing on value-per-door are using entirely different frameworks, and the gap between them is the embedded mark-to-market opportunity the buyer is paying for but the seller is often reluctant to give away.