5+ unit residential — the workhorse asset class of commercial real estate.
Multifamily property in commercial real estate refers to residential buildings with 5 or more rental units. The 5-unit threshold is the legal and financial boundary — 1–4 units are classified as residential (qualified for conventional residential lending), while 5+ units fall under commercial real estate rules, financing programs, and underwriting standards.
Multifamily is the largest commercial real estate sector by transaction volume — typically 35–40% of annual US commercial real estate trades. It's the dominant asset class for institutional investors because it offers consistent demand (people always need housing), diversified tenant risk (no single tenant > 1–5% of income at most buildings), and the deepest financing market in CRE (agency lending is essentially exclusive to multifamily).
Multifamily is classified by quality (Class A/B/C) and size. Class A is newer construction, high-end finishes, top markets. Class B is 1980s–2000s vintage, mid-market workforce housing. Class C is older, less amenitized, often workforce or affordable. Small-balance multifamily typically means 5–50 units, mid-market 50–200, and large/institutional 200+.
Financing options on multifamily are deeper than any other CRE asset class. Agency loans (Fannie, Freddie, HUD) offer the cheapest perm debt in CRE. CMBS covers mid-to-large multifamily. Bridge debt from regional banks, debt funds, and private capital lenders (like Matrix) handles value-add and transitional deals. DSCR loans serve the small-balance end, particularly 5–10 unit properties.
Multifamily underwriting centers on stabilized NOI (driven by rent growth, expense management, and occupancy), cap rate (local market benchmark for valuation), and debt yield (lender protection). Value-add multifamily strategies focus on lifting NOI through unit renovations, common-area improvements, and operational efficiency — capturing the spread between in-place performance and stabilized potential as equity creation at exit.
| Property: 36-unit Class B apartment, Midwest | |
| Acquisition price | $4,200,000 |
| Gross rent | $540,000 |
| – Vacancy & credit loss (6%) | ($32,400) |
| Effective Gross Income | $507,600 |
| – Operating expenses (42% OER) | ($213,192) |
| Net Operating Income | $294,408 |
| Cap Rate = $294,408 ÷ $4,200,000 | 7.01% |
| Agency loan (75% LTV, 30-yr amort, 6.25%) | $3,150,000 @ $1,939/mo P&I |
Residential is 1–4 units (qualifies for conventional residential lending). Multifamily is 5+ units (falls under commercial real estate rules and financing programs). The 5-unit threshold is the legal and financial boundary.
Single-family and 1–4 unit rentals use DSCR or conventional residential loans. Multifamily (5+) uses agency multifamily, CMBS, life-company commercial, or bridge debt — all underwritten as commercial assets on property NOI.
Newer construction (typically post-2000), high-end finishes, top markets, full amenity package. Class A trades at the tightest cap rates because demand is strongest and capital costs are lowest.
Demand for housing is steady through cycles, tenant risk is highly diversified across many units, and the financing market (especially agency) is deep and reliable. Multifamily historically has the lowest delinquency rates in CRE.
Acquire a Class B/C property with below-market rents and operational inefficiencies. Invest in unit renovations, common area improvements, and operational fixes. Lift rents and NOI to market. Refinance into perm debt or sell at the new stabilized value.
Matrix funds bridge, value-add, and small-balance multifamily nationwide. Real underwriting, fast execution, takeout-aware structuring.
