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Glossary

Multi-family

Residential property with 2 or more separate living units.

Multi-family refers to residential properties with 2 or more separate living units — duplexes (2 units), triplexes (3 units), fourplexes (4 units), and apartment buildings (5+ units). Multi-family properties are a core asset class for real estate investors because they spread tenant risk across multiple units while concentrating management on one property.

The 1-4 unit category gets special attention from lenders: it's the ceiling on residential financing. 5+ unit properties cross into commercial loan territory with different qualification rules, terms, and rates.

The 1-4 vs. 5+ unit distinction

The 4-unit cap is the most consequential line in residential investing:

  • 1-4 units: Residential financing. Conventional, FHA, VA, and DSCR programs all available. 30-year fixed loans standard.
  • 5+ units: Commercial financing. Different lenders, different products, typically 5-10 year terms with balloon payments, 25-year amortization, more rigorous underwriting.

For investors, this means buying a fourplex looks dramatically different than buying a five-unit building, even though they're functionally similar.

Why multi-family appeals to investors

Risk diversification within one property. A duplex with one tenant out generates 50% rental income. A single-family with the same vacancy generates 0%.

Concentrated management. One roof, one foundation, one set of utilities (in some configurations), one location to visit. Easier than managing 4 single-families spread across a market.

House hacking opportunity. 2-4 unit properties qualify for owner-occupied financing if you live in one unit. This unlocks 3.5% FHA down payments on properties generating substantial rental income from day one.

Better cash flow per unit (often). Multi-family properties typically produce more rental income per dollar of purchase price than single-family in the same market.

Easier scaling. One acquisition decision controls 2-4 income streams.

Multi-family loan considerations

Underwriting changes meaningfully across the 1-4 unit range:

Single-family (1 unit): Standard underwriting. Most flexible programs.

Duplex (2 units): Standard underwriting. Conventional and DSCR available. House hacking common.

Triplex (3 units) and Fourplex (4 units): Slightly stricter underwriting. Some lenders charge LLPAs (Loan-Level Pricing Adjustments) on 3-4 unit purchases. Reserves requirements typically higher.

5+ units: Crosses into commercial. Different lenders, different process entirely.

House hacking with multi-family

The strongest investor strategy on multi-family properties is house hacking — buying a 2-4 unit property as owner-occupied, living in one unit, renting the others.

Mechanics:

  • Use FHA or VA financing for 3.5% / 0% down payments.
  • Live in one unit for 12+ months minimum.
  • Rental income from non-owner-occupied units helps you qualify (typically 75% of market rent counts).
  • After 12+ months, move out, refinance into investment property terms or convert in place.

Investors using this strategy effectively turn a primary residence purchase into a cash-flow-positive rental from day one.

Multi-family with DSCR

For pure investment 1-4 unit purchases (no owner-occupancy), DSCR loans are typically the best fit. Why:

  • Property income qualifies the loan. Total rent across all units (subject to DSCR calculation) determines loan eligibility.
  • LLC closing. Multi-family rentals are usually held in entities; DSCR loans close in LLC names.
  • No portfolio cap. Conventional caps at 10 financed properties. Multi-family DSCR has no cap.
  • Higher loan amounts available. DSCR programs scale into jumbo territory for high-value multi-family.

What lenders look at on multi-family DSCR

  • Total rental income: Sum of all unit rents. Vacancy assumption applied per unit.
  • Per-unit DSCR: Some programs calculate DSCR per unit; most use aggregate.
  • LTV tiers: Multi-family DSCR LTV may be slightly more conservative than single-family DSCR (75% vs 80% on some programs).
  • Property condition: Each unit needs to be habitable. Vacant units may face stricter underwriting.

Rate Hero's take

Multi-family is one of the strongest acquisition categories for serious investors. We finance 1-4 unit residential multi-family via DSCR with no portfolio cap — qualified investors hold 50+ units across multiple properties using our programs.

For house hackers, we structure FHA and VA owner-occupied multi-family acquisitions, then transition the financing to DSCR investment programs after the 12-month occupancy period. For pure-investment multi-family acquisitions, DSCR is typically the right tool — qualifies on total rent, closes in LLC names, no Fannie/Freddie caps.

Send us the property details (number of units, current rents, your reserves and credit profile). We'll show you the financing options and help you structure the deal — whether it's house-hack entry, pure investment acquisition, or refinance into long-term DSCR.

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