Four units and five units can look almost identical to an investor. Same neighborhood, similar rents, comparable purchase price. But they sit on opposite sides of one of the most important boundaries in investment property financing. Brokers who understand what changes at the fifth unit can help experienced 1–4-unit investors move into small multifamily without treating a 10-unit deal like an oversized fourplex.
At LendSure Mortgage Corp., our DSCR program supports 5–10-unit properties with no personal income documentation required. Submit your scenario and we’ll provide a pre-qualification within 24 hours.
The Fifth Unit Changes the Financing Conversation
HUD defines multifamily housing as dwellings containing more than four separate and complete living units. A fourplex sits inside the residential mortgage framework. A five-unit property does not. That single unit triggers a different property classification, and with it, a different set of financing considerations covering loan products, underwriting methodology, valuation, documentation, and reserve requirements.
The FHFA’s 2026 conforming loan limits illustrate this clearly. FHFA publishes limits for one, two, three, and four-unit properties. There is no five-unit conforming loan limit in the same framework. Brokers can use the FHFA conforming loan limit database to verify limits for 1–4-unit properties by county, then recognize that a 5–10-unit deal requires a different conversation entirely.
The Fourplex vs. 5–10-Unit Comparison
Before walking an investor through this transition, brokers should understand what actually shifts:
| Fourplex | 5–10 Unit Property | |
| Financing category | 1–4 unit residential | Multifamily |
| Conforming loan framework | Potentially applicable | Not the standard 1–4-unit framework |
| Underwriting focus | Borrower and property | Increasingly property and cash-flow focused |
| DSCR calculation | Product dependent | Common multifamily metric |
| Rent roll | May be relevant | Central to underwriting |
| Operating history | Depends on product | Commonly important |
| Occupancy and stabilization | Product dependent | Often significant |
| Valuation emphasis | Residential appraisal | Income-producing capacity |
| Borrowing entity | Product dependent | Entity structures common |
Fannie Mae’s small multifamily loan programs begin at five units and establish DSCR and occupancy benchmarks that reflect the multifamily framework. The point is not that every 5–10-unit lender follows Fannie Mae guidelines. It is that the five-unit threshold is an industry-recognized boundary, not an arbitrary line.
Why the Investor May Want to Make the Jump
The Door-Count Math
An investor comparing a fourplex to an eight-unit building is not comparing one deal to another. They are comparing two different business models. A fourplex with four units at $1,800 per month generates $7,200 in gross monthly rent. An eight-unit building at $1,500 per unit generates $12,000. The larger building does not automatically represent the better investment, but the income potential scales differently.
For a broker, this conversation starts with property economics, not door count. Help the investor evaluate purchase price, rent, vacancy, taxes, insurance, maintenance, management, utilities, reserves, and debt service across both scenarios. That is the same framework at any unit count. What changes at five units is how the lender evaluates it.
Vacancy Means Something Different
A fourplex with one vacancy is 75% occupied. A 10-unit building with one vacancy is 90% occupied. The same vacancy event carries a different percentage impact depending on the total unit count. That diversification is one reason experienced investors pursue larger properties. It is also why multifamily underwriting places meaningful emphasis on occupancy and stabilization, which Fannie Mae’s conventional multifamily guidance reflects in its program requirements.
Our webinar Everything You Need to Know About Funding 5–10 Unit Properties walks through this transition in detail.
How DSCR Works at the Property Level
NOI vs. Gross Rent
Brokers who primarily originate 1–4-unit DSCR loans may be accustomed to thinking in terms of monthly rent divided by PITIA. Small multifamily underwriting often puts greater emphasis on Net Operating Income, which accounts for vacancy and operating expenses before the debt service calculation:
- Gross Potential Rent
- Less: Vacancy and Credit Loss
- Plus: Other Income
- Less: Operating Expenses
- Equals: Net Operating Income (NOI)
NOI divided by annual debt service produces the DSCR. A property generating $100,000 in NOI against $80,000 in annual debt service produces a 1.25x DSCR. Our DSCR program for 5–10-unit properties accepts ratios as low as 1.1x, with no personal income documentation required.
The Rent Roll
For a 5–10-unit file, the rent roll is not supporting documentation. It is the foundation of the income analysis. A complete rent roll should show each unit, the current tenant, monthly rent, lease start and end dates, security deposit, and occupancy status. Brokers submitting a 5–10-unit scenario should have the rent roll in hand before reaching out. It is the fastest way to establish what the property is actually producing.
Due Diligence Starts Looking Different
Moving from a fourplex to small multifamily introduces a more property-focused diligence process. HUD’s multifamily purchase and refinance programs establish the five-unit threshold across multiple federal programs, reflecting that multifamily properties are evaluated as income-producing assets rather than primarily as residential real estate.
Depending on the program, brokers may encounter requirements involving property inspections, operating statements, rent rolls, occupancy verification, and reserves. Fannie Mae’s multifamily inspection guidance requires inspection of all available units on properties with 5–9 units, a more thorough review than residential appraisal processes typically involve. Brokers should ask their lender what the specific submission requirements are for 5–10-unit deals rather than assuming the residential process scales directly.
Is Your Fourplex Investor Ready for 5–10 Units?
The Readiness Checklist
Not every fourplex investor is ready for small multifamily, and part of a broker’s value is helping clients assess that honestly. A useful framework:
- They understand rental-property cash flow, not just gross rent
- They already manage several units successfully
- They have adequate liquidity and reserves for a larger property
- They understand NOI and how operating expenses affect returns
- They have systems for leases, collections, maintenance, and bookkeeping
- They understand that the fifth unit changes the financing conversation
An investor who has operated two fourplexes has eight units of experience. That track record matters. Brokers should document existing rental property experience when submitting a 5–10-unit scenario, as lender experience requirements vary and prior 1–4-unit ownership can contribute to the investor’s profile.
The Property Checklist
On the property side, brokers should gather the following before submitting:
- Property address and unit count
- Purchase price or current value
- Requested loan amount
- Current rent roll and occupancy
- Operating statement or trailing 12-month financials if available
- Investor’s real estate experience and entity information
- Purchase vs. refinance, and any planned renovations
A clean submission package at this level moves faster through underwriting than a residential file with missing documentation. The operating statement in particular, showing actual income and expenses rather than projections, is one of the most useful documents a broker can include.
Ready to Structure a 5–10-Unit Deal?
An investor who has maxed out the 1–4-unit playbook is often the ideal client for small multifamily. Our DSCR program supports 5–10-unit properties with loan amounts up to $2,000,000, no personal income documentation, and up to 10 loans per investor simultaneously.
Submit your scenario with the rent roll, purchase price, and investor experience, and our team will help determine how the file can be structured. Become an approved broker to access our full program suite and broker resources.
Frequently Asked Questions
What changes at five units from a financing perspective?
A five-unit property crosses from the 1–4-unit residential mortgage framework into the multifamily classification. HUD, FHFA, and Fannie Mae all recognize this threshold. The practical changes include underwriting methodology, valuation approach, documentation requirements, DSCR calculation, and reserve expectations. Brokers should not assume that fourplex financing scales directly to a five-unit deal.
Does LendSure DSCR program cover 5 – 10-unit properties?
Yes. Our DSCR program supports 5–10-unit properties with loan amounts up to $2,000,000, no personal income documentation required, and DSCR as low as 1.1x. Up to 10 loans per investor can be financed simultaneously.
How is DSCR calculated on a 5–10-unit property?
DSCR is calculated by dividing Net Operating Income by annual debt service. NOI accounts for gross potential rent less vacancy and operating expenses. A property generating $100,000 in NOI against $80,000 in annual debt service produces a 1.25x DSCR. The specific calculation methodology depends on the lender’s program guidelines.
What is a rent roll and why does it matter for these deals?
A rent roll is a property-level document showing each unit, tenant, monthly rent, lease dates, deposit, and occupancy status. For 5–10-unit properties, it is the foundation of the income analysis. Brokers should have the current rent roll ready before submitting a scenario.
How does vacancy risk change between a fourplex and a 10-unit building?
A single vacancy in a fourplex represents 25% of the property’s units. The same vacancy in a 10-unit building represents 10%. The larger property offers more income diversification per vacancy event, which is one reason experienced investors pursue larger unit counts. It also means multifamily lenders pay close attention to occupancy and stabilization.
Does investor experience matter for a 5–10-unit scenario?
Yes. Prior rental property ownership, including successful 1–4-unit experience, can contribute to the investor’s profile when underwriting a 5–10-unit scenario. Brokers should document the investor’s existing rental portfolio and management history when submitting.
What operating documents are needed for a 5–10-unit submission?
A current rent roll, operating statement or trailing 12-month financials, and lease documentation are the core property-level documents. Brokers should also provide the property address, unit count, purchase price or current value, requested loan amount, and investor entity information.
What is NOI and how is it different from gross rent?
NOI is Net Operating Income: gross potential rent, less vacancy and credit loss, plus other income, less operating expenses. It represents the property’s income after accounting for vacancy and operating costs but before debt service. Gross rent does not reflect vacancy or expenses and will always be higher than NOI. For multifamily underwriting, NOI is the more meaningful income figure.
