The Quick Read: A lender sizes a mixed pool by running two tests on it: pooled rent against pooled debt service, and loan amount against appraised value, with the tighter result setting the loan. Duplexes through fourplexes can sit in the same pool as single-family houses. The one note ties them together.
- Under the portfolio structure, coverage is measured on the pool, so stronger properties can offset weaker ones.
- The 30-year portfolio program takes 2 to 20 properties under one note, with leverage up to 80% on a purchase or rate-and-term refinance.
- Cash-out never exceeds 75% of pooled value.
- Every property still needs a lease or appraiser-supported market rent.
- Clearing 1.00 on the pool is not the same as positive cash flow. Final terms depend on lender guidelines, property type, leverage, and the borrower’s complete credit picture.
What Counts as a Mixed Pool?
A mixed pool is a set of single-family houses, condos, townhomes and 2-4 unit buildings that a lender underwrites together. The brokerage sees this request often: an investor owns a few houses, adds a fourplex, and wants one loan instead of five.
The unit count matters. Properties of five or more units are generally classed as commercial, while one to four units are residential. That line changes the income math. Houses and 2-4 unit buildings in a pool usually use gross rent over the full housing payment. A 5+ unit building often uses net operating income, meaning rent less operating expenses, over debt service.
Check which method applies to each asset before blending anything. Mixing the two in one spreadsheet is a common way to overstate coverage.
For the full background on how these loans work, see the complete DSCR loans guide.
Key Terms Defined
PITIA: the full monthly housing obligation: principal, interest, taxes, insurance and any HOA dues.
Pooled DSCR: total rent used for lender review across the properties divided by total PITIA across the properties.
Cross-collateralization: one note secured by several properties, so each property backs the whole loan.
Release clause: loan language that lets one property leave the pool by sale or refinance, on the lender’s terms.
Rent schedule: the appraiser’s market rent estimate for a property.
Step 1: Test Each Property on Its Own
Underwriting starts at the door level. The lender wants a supported rent figure, a payment and a value for every property, even though the final test runs on the pool.
For rent, there are two kinds of evidence: an in-place lease or an appraiser’s market rent. Appraisers report market rent on a comparable rent schedule. For 2-4 units, the Fannie Mae forms list includes a small residential income property report, which carries unit-level rent. DSCR is not an agency product, but that report is a common industry vehicle for this kind of evidence.
A vacant or unleased unit falls back on market rent, not the owner’s number. The brokerage sees files stall when a fourplex has one dark unit and the rent roll shows a hopeful figure.
Step 2: Pool the Rents and the Payments
Pooling means adding up every property’s rent, adding up every property’s PITIA, and dividing. On the 30-year portfolio program, the floor is 1.00 measured on that pooled number, subject to lender guidelines.
The pool is payment-weighted. A large building with a big payment pulls the blend harder than a small house does. Picture an investor with four houses that each cover their payment at roughly 1.25x and one fourplex that sits near 0.95x. The fourplex carries the largest payment, so the pooled ratio lands well below the houses’ average. The investor sees “four strong doors” but the lender sees one heavy drag.
This is the real answer to whether strong properties can carry weak ones. They can, within limits. The weak asset’s payment size sets how much cushion the others must supply. When a property sits below 1.00 inside the pool, underwriting tests the pooled coverage, the leverage and the terms, subject to underwriting.
Step 3: Apply the Leverage Test
The second test is value. On a purchase or rate-and-term refinance, the 30-year portfolio program goes up to 80% of value, typically measured on aggregate appraised value. On a cash-out, the ceiling is 75% of pooled value, and never above the structure’s own ceiling.
The tighter test binds. If rents are strong but value is thin, leverage caps the loan. If value is generous but rents are light, coverage caps it. A larger down payment can lift coverage by shrinking the payment, but it does not erase credit floors, reserve rules or property eligibility. The strongest files clear both tests.
Recently bought properties add a wrinkle. Inside the first six months of ownership the loan is also capped at 90% of total cost (purchase price plus documented improvements), and at 100% of total cost from six to twelve months. The leverage ceiling still applies, so the loan is the lower of the two. After twelve months the appraised value alone is the basis. A rate-and-term refinance is not subject to the cost-basis cap.
Step 4: Credit, Reserves and Entity
Credit is a pool-level item. The portfolio program typically wants a score of at least 640, and some structures ask for 680 or 720. Reserves are commonly around six months of PITIA, stepping up to about nine months on larger balances. Reserves vary by lender, leverage and loan size.
Some structures require a special-purpose entity, typically an LLC, subject to program terms. Recourse loans carry a personal guarantee. Have the entity documents and a schedule of real estate ready before the file goes in.
Not every property qualifies. Owner-occupied homes, co-ops, mixed-use and commercial property are not eligible in the pool.
Manufactured and mobile homes, log homes and barndominiums are not reviewable through the network’s DSCR programs.
Two Structures for a Larger Portfolio
The 30-year program fits a small-to-mid pool. A second structure, a rental portfolio term loan, fits five or more rental properties or units under one loan, with balances of $500,000 and up and leverage up to 75%. Terms run 3, 5, 7 or 10 years with a balloon at maturity. Prepayment is yield maintenance. Non-recourse versions exist, with recourse limited to carve-outs such as fraud and bankruptcy. Properties in several markets can sit under one loan. Small multifamily of five or more units is eligible only inside this term loan. These specifics are subject to lender guidelines and a full review of property, leverage, and credit.
| Factor | 30-year portfolio DSCR | Rental portfolio term loan |
|---|---|---|
| Properties | 2 to 20 | 5+ properties or units |
| Loan size | $300,000 to $5,000,000 | $500,000 and up |
| Max leverage | Up to 80% | Up to 75% |
| Term | 30-year | 3, 5, 7, 10-year, balloon |
| Recourse | Personal guarantee on recourse | Recourse or non-recourse |
Figures are program ceilings and floors, not quotes, and sit subject to lender guidelines.
Blanket or Separate Loans?
The choice comes down to hold horizon and weak assets. With separate loans, each property sits on its own lien. You can sell or refinance any one, and a default stays isolated. With one blanket, you get a single closing and strong rents can carry a weak door. The cost is cross-default exposure and release negotiation.
A bank’s “portfolio loan” is a different sense of the word: the bank keeps the paper on its books. Here, portfolio DSCR loan, blanket loan and cross-collateralized loan all name one note secured by several rentals.
Anyone planning to sell inside the hold period should read the release language before choosing one note. Lendmire’s piece How a Small-Balance DSCR Lender Sizes a Multifamily Loan covers the single-building side of the same math.
Where the Rule Breaks
Release price. A release is negotiated language, not a legal right. The release price runs above the property’s allocated balance, and the remaining pool has to keep covering its debt service afterward. Selling your best performer can leave the pool thinner than it was.
Weak-asset drag. A property can be too heavy for the pool to absorb. The fix is usually to carve it out into a separate loan or cure the rent, not to hope the blend absorbs it.
Mixed income methods. If a 5+ unit building enters with net income and houses enter with gross rent, the blend is not apples to apples.
Short-term rentals. Different evidence applies, and STR collateral runs lower leverage than standard rentals: a purchase tops out at 75% and cash-out at 70%. Short-term rental rules can vary by city, county, HOA and property type, so investors should confirm local rules before relying on projected rental income. Terms depend on the lender’s guidelines, the property type, the leverage, and a full review of the credit profile.
Cash flow. DSCR compares rent to PITIA only. Repairs, vacancy, management, utilities and capex sit outside it.
Borrower Prep Checklist
1. Rent roll and leases for every unit.
2. Schedule of real estate with value and debt on each property.
3. Entity documents, where the structure calls for an LLC.
4. Insurance quotes per property.
5. Reserves documentation at the pool level.
Tax treatment varies; consult a qualified professional.
Frequently Asked Questions
Can houses and a fourplex sit in the same DSCR loan?
Yes. The 30-year portfolio program accepts single-family, 2-4 unit, condo and townhome properties under one note, with 2 to 20 properties. Five-plus unit buildings fall under the term-loan structure instead.
Does one weak property sink the whole pool?
Not automatically. Coverage is tested on the pool, so stronger properties can offset a weaker one. The weak property’s payment size sets how much cushion is needed, and leverage and credit are still tested.
Is a blanket loan always better than separate loans?
No. A blanket gives one closing and pooled coverage, but adds cross-default exposure and release negotiation. Separate loans isolate risk and keep each property free to sell.
What credit score does a portfolio loan need?
Typically at least 640, with some structures asking 680 or 720. Reserves commonly run around six months, subject to lender guidelines.
Does clearing 1.00 mean the portfolio cash flows?
No. The ratio counts rent against PITIA only. Vacancy, repairs, management and capex are outside it.
If you are buying or refinancing rental properties and want to see how the numbers work, Lendmire can help you compare DSCR loan options based on property income, credit profile, leverage and investor goals.
About Lendmire
A DSCR-focused mortgage broker, Lendmire (NMLS# 2371349) places investor financing across 41 markets — 40 states plus Washington, D.C. — with DSCR eligibility generally reviewed by the lender on property cash flow instead of traditional personal-income documentation, subject to lender guidelines. Scotsman Guide named Lendmire a Top Mortgage Workplace in 2025 and 2026.
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References
1. Fannie Mae: Selling Servicing Guide Forms
This article is part of Lendmire’s DSCR loan program — full qualification details, guidelines, and scenarios live on the program page.
Related reading: How a Portfolio DSCR Lender Reads a Blanket Bridge Loan · How a DSCR Lender Sizes a Blanket Loan Across LLC-Held Doors · Can a Rental Portfolio in One Small Market Get a DSCR Portfolio Loan?
Brandon Miller
Founder & CEO, Mortgage Loan Originator, Lendmire LLC
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Important disclosures. Lendmire (NMLS# 2371349) is a licensed mortgage brokerage. Lendmire is not a direct lender, depository institution, or financial advisor. All loan inquiries are subject to lender underwriting; this article does not constitute a commitment to lend. Rates, terms, and program guidelines are subject to change without notice and vary by borrower profile, property type, and state. Information in this article is general in nature and is not financial, legal, or tax advice. Equal Housing Opportunity. NMLS Consumer Access: nmlsconsumeraccess.org.