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Property-type guide

10–30 Unit Multifamily: Navigating the Financing Gap Between DSCR and CMBS

Financing 10–30 unit apartment buildings: too large for residential DSCR, too small for CMBS. What products fill the gap, lender landscape, and how underwriting shifts at 10+ units.

Updated 15 min read

The 10–30 unit multifamily building sits in one of the most financing-challenged segments of real estate investment. Too large for residential DSCR loans, too small for the institutional CMBS conduit market, and often too transitional or complex for traditional bank portfolio lending, these buildings require investors to navigate a fragmented landscape of commercial lenders, agency programs, and debt funds. Understanding the landscape clearly is more valuable than any single lender recommendation.

This guide covers the financing universe for 10–30 unit buildings: how the underwriting differs from residential DSCR, the specific products available, their trade-offs, and what investors need to prepare for a commercial multifamily loan application.

Why 10–30 Units Falls in a Gap

Below agency minimums: Fannie Mae Delegated Underwriting and Servicing (DUS) multifamily programs generally start at $3M+ loans and 50+ units for efficient processing. Below that threshold, agency multifamily execution is available but operationally complex.

Freddie Mac SBL is the exception: The Freddie Mac Small Balance Loan program specifically addresses the 5–50 unit, $750K–$7.5M gap with competitive rates and non-recourse structure. It is the best institutional option for stabilized properties in this size range.

Too small for CMBS conduit: CMBS (Commercial Mortgage-Backed Securities) execution requires minimum loan sizes of $2M–$5M and typically prefers 30+ unit stabilized properties with institutional-grade management. A 12-unit building with a local property manager and variable occupancy is not a CMBS execution candidate.

Bank portfolio is relationship-dependent: Local and regional banks will portfolio 10–30 unit loans, but terms are typically 5–7 year balloon (not 30-year fixed), recourse, and pricing varies widely based on the bank’s appetite for multifamily risk in a given market.

Non-QM commercial bridge/DSCR fills the gap: For transitional, value-add, or non-agency-eligible properties, commercial bridge lenders and small-balance non-QM commercial lenders fill the permanent and transitional financing need. These products are more expensive than agency financing but more flexible.

The DSCR Calculation Difference

This is the most critical conceptual difference between residential and commercial DSCR underwriting.

Residential DSCR: Gross Monthly Rent ÷ PITIA (no expense deduction)

Commercial DSCR (Net Operating Income basis): NOI ÷ Annual Debt Service

Where:

  • NOI = Gross Potential Rent × (1 − vacancy rate) − operating expenses
  • Operating expenses typically include: property management (8%–10% of EGI), maintenance and repairs (5%–8%), utilities (if owner-paid), insurance, property taxes, reserves for replacement (typically $200–$400/unit/year)

Practical example: 12-unit apartment building

  • Gross potential rent: $18,000/month = $216,000/year
  • Vacancy at 5%: -$10,800
  • Effective Gross Income (EGI): $205,200
  • Operating expenses: management $16,416 + maintenance $15,000 + utilities $0 (tenant-paid) + insurance $9,600 + reserves $3,600 = $44,616
  • NOI: $205,200 − $44,616 = $160,584
  • Annual debt service on $1.2M at 7.25% (30yr): $98,250
  • Commercial DSCR: $160,584 / $98,250 = 1.635

This is healthy. Many 10–30 unit buildings in strong rental markets clear 1.20+ commercial DSCR easily at 70%–75% LTV. The challenge is usually documentation and appraisal, not income coverage.

Common mistake: Using residential DSCR calculation (gross rent ÷ PITIA) on a commercial property gives an inflated ratio because it ignores operating expenses. Always use NOI-based commercial DSCR when analyzing 5+ unit properties.

Product Overview: What Is Available

Freddie Mac Small Balance Loan (Best for Stabilized)

Best for: Stabilized (90%+ occupied for 90+ days), 5–50 unit properties, $750K–$7.5M loan range.

Terms: 5/1, 7/1, 10/1 ARM or 30-year fixed (through originating lenders); 5–30 year terms; 30-year amortization. Non-recourse (carve-outs for fraud/bad acts).

Rate: Competitive — typically priced at a spread over Freddie’s market yield curve; often 20–50 bps below bank portfolio rates for equivalent quality.

DSCR requirement: 1.25 minimum.

LTV: Up to 80% (standard), 75% on most deals in practice.

Process: Originated through approved Freddie Mac optigo lenders (Walker & Dunlop, CBRE, Greystone, Arbor, etc.). Underwriting time 30–60 days. More documentation-intensive than residential DSCR.

Best path: If your building is stabilized and in a market Freddie serves, pursue SBL before any other option. The combination of non-recourse, competitive rate, and agency credit support makes it the gold standard for permanent financing in this size range.

Bank Portfolio Loans

Best for: Properties in markets where the bank has strong local knowledge; borrowers with existing banking relationships; transitional properties that need more flexible underwriting than Freddie.

Terms: Typically 5–7 year term with 20–25 year amortization (balloon payment); some banks offer 10-year term. Full recourse.

Rate: Generally 0.25%–0.75% above Freddie SBL equivalent for similar quality; more for transitional assets.

DSCR requirement: Typically 1.20–1.25 minimum; some banks 1.15 for strong borrowers.

LTV: 70%–75% typical; some lenders to 80% for strong borrowers with significant bank deposit relationships.

Documentation: 2-year tax returns on the entity and individual guarantors, personal financial statement, rent roll, operating statements, and usually a personal guarantee from all major owners.

Advantage: More flexible on property condition, transitional status, and borrower complexity than Freddie. Relationship-building with a local bank that covers your target market is a high-value activity for multifamily investors.

Commercial Bridge / Transitional Loans

Best for: Value-add acquisitions, below-occupancy buildings (under 85%), recent renovations, repositioning from underperforming to stabilized.

Terms: 12–36 months, interest-only, full recourse typically. Bridge-to-permanent exit planned at stabilization.

Rate: 9%–12% typical in 2026 for commercial bridge.

LTV: 65%–75% of as-is value; 70%–80% of stabilized value for renovation-funded draws.

DSCR requirement: Often not required for bridge — asset-value-based underwriting on transitional properties.

Exit: At stabilization, the permanent takeout is Freddie SBL or bank portfolio at commercial DSCR-based underwriting.

Non-QM Commercial Small Balance

Several non-QM commercial lenders offer permanent commercial DSCR loans in the $500K–$5M range without Freddie or conventional bank underwriting requirements. These are analogous to the residential non-QM DSCR market, applied to commercial multifamily:

Lenders active in this space: Lima One Capital (commercial program), RCN Capital (commercial bridge and term), EasyStreet Capital (some commercial programs), and several portfolio lenders.

Trade-offs vs. Freddie SBL: Higher rate (typically +0.75%–1.25%), recourse, shorter terms (5–10 year balloon). But faster and more flexible than agency execution.

Underwriting: What Lenders Examine in Detail

Commercial multifamily underwriting for 10–30 units is meaningfully more intensive than residential DSCR:

Rent roll: A current rent roll listing all units, occupancy status, monthly rent, lease expiration dates, and any concessions (free rent, below-market leases). Lenders review for near-term lease rollover risk (large percentage of leases expiring within 12 months) and below-market rents that may not be renewable at market.

Operating history (T-12 or T-24): 12 or 24 months of property operating statements. Lenders want to see stable or improving NOI, not a one-month snapshot at maximum occupancy. Seasonality, turnover costs, and capital expenditure history are reviewed.

Market vacancy: The subject’s vacancy is compared to the local market vacancy rate. If subject vacancy is 15% in a market with 5% average vacancy, the underwriter will ask why and may use a higher vacancy assumption.

Capital improvements: What has been spent on the building in the past 2–3 years (new roof, HVAC, plumbing, windows)? What deferred capital needs exist? The property condition assessment (PCA) quantifies remaining useful life of major building systems.

Tenant quality: Lease terms, security deposits held, any units with collection issues or delinquencies.

Local market analysis: The commercial appraisal includes an income approach to valuation using market-level comparable rents and cap rates — more complex than the residential 1007 approach.

Borrower Requirements for Commercial Multifamily

Commercial multifamily lenders have more demanding borrower requirements than residential DSCR:

Multifamily management experience: Most lenders want to see relevant experience — either the borrower has managed/owned similar properties or has a professional property management company engaged. First-time multifamily buyers face more scrutiny.

Net worth and liquidity: Lenders typically want borrower net worth equal to or greater than the loan amount, and liquidity (post-closing) of 10%–15% of the loan amount.

Entity structure: Limited partnerships, LLCs, or corporations all acceptable. Personal guarantees from all members owning 20%+ are standard for recourse loans; Freddie SBL allows non-recourse with limited carve-outs.

Credit: Commercial multifamily underwriting uses personal credit (typically 680–700 minimum), but also examines the business/entity financial profile. No equivalent to residential DSCR’s credit-only approach.

Rate and Fee Expectations

Q2 2026 estimates for a 12-unit stabilized building at 70% LTV, 1.25 DSCR, 720+ borrower FICO:

ProductRateTermRecourseOrigination
Freddie SBL (7/1 ARM)6.50%–7.00%7yr fixed/30yr amNon-recourse1.0–1.5 pts
Freddie SBL (10yr fixed)6.75%–7.25%10yr fixed/30yr amNon-recourse1.0–1.5 pts
Bank portfolio (7-yr balloon)7.00%–7.75%7yr/25yr amRecourse0.5–1.0 pt
Non-QM commercial7.50%–8.50%5–10yr/25–30yr amRecourse1.5–2.5 pts
Commercial bridge10.0%–12.0%12–24 months IORecourse2.0–4.0 pts

Third-party costs (commercial appraisal, environmental, legal): $8,000–$18,000 depending on complexity.

Strategic Recommendations for 10–30 Unit Investors

For stabilized buildings: Pursue Freddie Mac SBL first through an approved optigo lender. Non-recourse, competitive rate, and 30-year amortization make it the superior product for hold-oriented investors. The documentation requirement is real but manageable.

For value-add acquisitions: Use commercial bridge financing during the renovation/lease-up period, with a planned Freddie SBL or bank portfolio exit at stabilization. Model the bridge carry cost (10%–12% for 12–24 months) explicitly in your acquisition underwriting.

For transitional or below-occupancy buildings: Non-QM commercial lenders and local banks are more flexible on stabilization requirements. The rate premium is real — 1%–2% above Freddie — but access to capital is the priority.

For first-time commercial buyers: Partner with an experienced multifamily broker and a commercial mortgage broker who knows the small-balance market. Lender navigation is qualitatively different from the residential DSCR market. Relationships and execution track record matter more.

Use the DSCR calculator with the NOI-based commercial DSCR approach to model 10+ unit deals. For lender matching on commercial multifamily, get matched to confirm which of our lender network covers commercial multifamily in your target market.

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Frequently asked questions

Does a 10-unit multifamily qualify for a residential DSCR loan?

No. Residential DSCR loans — the products covered throughout most of this site — are designed for 1–4 unit residential properties. At 5 units and above, properties are classified as commercial real estate. A 10–30 unit building requires a commercial loan product: either a small-balance commercial DSCR, a portfolio multifamily loan from a bank or credit union, a Freddie Mac Small Balance Loan program (for 5–50 units), or a small CMBS conduit loan for larger stabilized buildings.

What products fill the 10–30 unit financing gap?

Four primary options: (1) Small-balance commercial DSCR loans from non-QM/bridge lenders (commercial bridge with DSCR exit, or permanent commercial loans with DSCR-style underwriting); (2) Portfolio loans from local banks and credit unions (relationship-based, typically 3–7 year terms with balloon); (3) Freddie Mac Small Balance Loan (SBL) for stabilized properties 5–50 units at better rate than bank portfolio; (4) Debt funds for transitional or value-add assets. Each has distinct pricing, structure, and qualification requirements.

What DSCR does a 10–30 unit building need to qualify?

Commercial multifamily lenders typically require 1.20–1.30 DSCR as a baseline — higher than the 1.0 minimum common in residential DSCR. The DSCR calculation uses Net Operating Income (NOI = gross rents minus vacancy allowance and operating expenses) divided by annual debt service. Unlike residential DSCR, commercial DSCR deducts operating expenses from income — the denominator is annual P&I, and the numerator is NOI, not gross rent.

How is the DSCR calculation different for 10+ unit commercial properties?

Residential DSCR uses Gross Rent ÷ PITIA (no expense deduction). Commercial DSCR uses Net Operating Income ÷ Annual Debt Service. NOI = Gross Rents × (1 − vacancy rate) − operating expenses (management, maintenance, utilities, insurance, taxes). A 10-unit building grossing $120,000/year in rent with a 7% vacancy and $35,000 in operating expenses has NOI of approximately $76,600. If annual debt service is $62,000, commercial DSCR = $76,600 / $62,000 = 1.235.

What is a Freddie Mac Small Balance Loan and does it apply here?

Freddie Mac's Small Balance Loan (SBL) program finances stabilized multifamily properties with 5–50 units in most markets. Rates are typically competitive with or below bank portfolio rates. Requirements include: stabilized occupancy (90%+ for 90 days), no significant deferred maintenance, minimum loan amount of $750,000 in most markets, 5–30 year terms with fixed-rate and ARM options, and non-recourse (unusual for this loan size). For clean, stabilized 10–30 unit buildings, Freddie SBL is often the best permanent financing available.

What is the role of occupancy in qualifying a 10–30 unit building for commercial DSCR?

Stabilized occupancy is critical. Most commercial DSCR lenders require 90%+ physical occupancy for 90 days or more before qualifying the building for permanent financing. Transitional properties (below 85% occupancy, recent acquisition, or mid-renovation) qualify for commercial bridge loans with a DSCR-qualified exit — similar in concept to the residential bridge-to-DSCR workflow. The 'DSCR' product in the commercial sense is the permanent takeout after stabilization.

Can I use a blanket residential DSCR loan to cover 10 individual single-family rentals instead of one building?

Yes — blanket or portfolio DSCR loans covering multiple individual residential properties (1–4 unit each) are a separate product category from commercial multifamily loans. A portfolio of 10 SFRs can be financed with a residential blanket DSCR from lenders like CoreVest or Visio. This is fundamentally different from financing a single 10-unit apartment building. The blanket residential product has different pricing, LTV, and underwriting than commercial multifamily.

What documentation is required for a 10–30 unit commercial DSCR loan?

Significantly more than residential: 24 months of rent rolls, 24 months of operating statements (or T-12/T-24 profit and loss), complete rent schedule with lease expirations, unit mix summary, property management agreement, recent appraisal (MAI-certified commercial appraisal with income approach), property condition assessment or Phase I environmental report, title commitment, insurance binders, and entity documentation. First-time commercial borrowers should expect 45–90 day closing timelines.

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