Multi-Family Home Loans: Buying a Duplex or Triplex
Last updated: October 2026 · Editorial standards
Buying a duplex, triplex, or fourplex while living in one unit — commonly called «house hacking» — is one of the most powerful wealth-building strategies in real estate. Here’s how the financing works.
What Counts as a Multi-Family Property?
For mortgage purposes, 1–4 unit properties are considered residential and can be financed with standard residential mortgages (FHA, VA, conventional). Five or more units require commercial financing — different lenders, different underwriting, typically larger down payments.
This article covers 2–4 unit residential properties.
The Key Advantage: Rental Income Can Help You Qualify
When you purchase a 2–4 unit property and plan to live in one unit, lenders can count a portion of the rental income from the other units toward your qualifying income. This often allows buyers to qualify for a larger loan than their personal income alone would support.
How rental income is calculated:
- Lenders typically use 75% of the gross rental income (25% is discounted for vacancy and maintenance)
- For properties you don’t own yet, the appraiser provides a rental income estimate on the appraisal
Example:
- Triplex: your unit + 2 rental units at $1,500/month each
- Gross rental income: $3,000/month
- Qualifying rental income (75%): $2,250/month added to your income
This can significantly improve your debt-to-income ratio.
Loan Options for Multi-Family (2–4 Units)
FHA Loans
FHA loans are available for 2–4 unit properties with just 3.5% down (with 580+ credit score). You must occupy one unit as your primary residence.
FHA loan limits for multi-unit properties are significantly higher than for single-family homes:
- 2-unit: up to $637,950 (standard); higher in high-cost areas
- 3-unit: up to $771,125
- 4-unit: up to $958,350
FHA loans for multi-family require 3 months of PITI reserves in savings at closing.
VA Loans
Available for 2–4 unit properties with zero down payment for eligible veterans. Must occupy one unit. VA loans are among the best options available for multi-family house hackers who qualify.
Conventional Loans
- 2-unit: 10–15% minimum down payment
- 3–4 unit: 20–25% minimum down payment
- Rates may be slightly higher than single-family
USDA Loans
Not available for multi-unit properties — USDA is for single-family primary residences.
Down Payment Requirements Comparison
| Units | FHA | VA | Conventional |
|---|---|---|---|
| 2 | 3.5% | 0% | 10–15% |
| 3 | 3.5% | 0% | 20–25% |
| 4 | 3.5% | 0% | 20–25% |
For buyers who don’t have large down payments, FHA and VA are dramatically more accessible for 3–4 unit properties.
Reserve Requirements
Multi-family properties require more cash reserves than single-family homes because vacancies and maintenance are higher risks.
- FHA: 3 months PITI reserves
- Conventional: 6 months PITI reserves for 3–4 units (some lenders require more)
- VA: No specific reserve requirement, but lenders may impose their own
Plan to have significant savings beyond the down payment and closing costs.
Rental Income Documentation
Properties you already own: Lenders use Schedule E from your tax returns, discounted by 25% for vacancy.
Properties you’re buying: The appraiser completes a rent schedule (Form 1007 or 1025) estimating market rents. Lenders use 75% of that estimate.
Existing leases: If the property has tenants with signed leases, those lease amounts can also be used.
Buying Multi-Family as an Investment (Not Owner-Occupied)
If you’re buying a 2–4 unit property but won’t live there, financing is treated as an investment property:
- Higher down payment requirements (20–25%)
- Higher interest rates
- Stricter reserve requirements
- No FHA or VA programs
The owner-occupancy requirement is what makes house hacking so financially accessible.
Key Takeaways
Buying a 2–4 unit property and living in one unit combines homeownership and real estate investing in one transaction. The ability to use rental income for qualification, combined with low FHA or zero-down VA financing, makes this one of the most accessible real estate investment strategies available to buyers of modest means.
Frequently Asked Questions
Do I have to have tenants lined up before closing? No, but existing tenants make income documentation stronger. For a vacant property, the appraisal rental estimate is used.
Can I use future rental income from a unit I’ll live in? No — lenders only count income from units you’re renting to others, not your own unit.
What if I move out later? You can rent your unit after moving out. You generally need to live in the property for at least 1 year when using FHA or VA financing.
Is house hacking legal in all areas? Zoning and local regulations vary. Some areas restrict rentals or require licenses for small landlords. Check local ordinances and HOA rules (if applicable) before purchasing.
