⚡ HOUSE HACKING MATH — $450K DUPLEX @ 6.89%
Down Payment (FHA 3.5%)
$15,750
vs $90K–$112K for investment property
Monthly Mortgage (PITI)
$2,950
total housing cost before rental income
After $1,900 Rent Income
$1,050/mo
your effective housing cost ✅
House Hacking With FHA 2026: Buy a Duplex for 3.5% Down — Let Renters Pay Your Mortgage
FHA allows 3.5% down on 2–4 unit properties as long as you live in one unit. That's $15,750 to buy a $450,000 duplex that generates $1,900/month in rent — slashing your housing cost to under $1,100/month while you build equity and own real estate. Find FHA lenders who specialize in multi-unit house hacking.
FHA Loan Limits for 2–4 Unit Properties (2026)
| Property Type | Standard Limit | High-Cost Limit | Min Down (3.5%) |
|---|---|---|---|
| Single Family (1 unit) | $498,257 | $747,400 | $17,439 |
| Duplex (2 units) ⭐ | $637,950 | $956,925 | $22,328 |
| Triplex (3 units) | $771,125 | $1,156,688 | $26,989 |
| Fourplex (4 units) | $958,350 | $1,437,525 | $33,542 |
How Rental Income Boosts Your Qualification
📊 75% Rental Income Rule — How It Works
Order an FHA multi-unit appraisal — appraiser estimates market rent for all units
Take 75% of the market rent for all non-owner units (vacancy/maintenance buffer)
Add this amount to your gross monthly income for qualification purposes
Result: much higher qualifying income → larger loan → bigger/better property
Example: Triplex in Phoenix
FHA vs Conventional for House Hacking
| Factor | FHA Multi-Unit | Conventional Multi-Unit |
|---|---|---|
| Min Down Payment | 3.5% (580+ credit) | 5% (2-unit) / 10% (3–4 unit) |
| Min Credit Score | 580 (500 with 10%) | 620 standard |
| Mortgage Insurance | MIP for life of loan | PMI removed at 20% equity |
| Max DTI | 56.9% (manual UW) | 45–50% |
| Rental Income Counted | 75% of market rent | 75% of market rent |
| Loan Limit (4-unit, std) | $958,350 | $1,474,400 |
| Best For | Low savings, 580–680 credit | 5%+ down, 700+ credit, no MIP |
Ready to Live for Free While Building Real Estate Wealth?
Compare FHA multi-unit lenders — not all lenders handle duplex/triplex FHA loans. Find one with experience in the house hacking strategy.
House Hacking FAQ
What is house hacking and how does it work with an FHA loan?
House hacking is buying a 2–4 unit property (duplex, triplex, or fourplex), living in one unit, and renting the others. The rental income from the other units offsets — or fully covers — your mortgage payment. With an FHA loan, you can buy with just 3.5% down (vs 20–25% for investment property loans) because FHA allows owner-occupied multi-unit purchases. Example: You buy a $450,000 duplex with 3.5% down ($15,750). You live in one unit, rent the other for $1,800/month. Your mortgage is $2,800/month. Your effective housing cost: $1,000/month — while building equity and owning real estate. After 12 months as your primary residence, you can move out, rent both units, and it becomes a rental property.
How much of the rental income can I use to qualify for an FHA loan?
FHA allows you to count 75% of projected rental income from the non-owner-occupied units toward your qualifying income. The 75% haircut accounts for vacancy and maintenance. How it works: Get an appraiser's market rent estimate (Form 1007 for single-family rental comparisons, or as part of the multi-unit appraisal). The appraiser estimates market rent for each unit. You can use 75% of those rents as qualifying income. Example: Duplex. Your unit: you live in it. Other unit: $2,000/month market rent. 75% of $2,000 = $1,500/month added to your qualifying income. At 6.89%, every $1,500 in monthly income qualification ≈ $225,000 more in loan amount. This can dramatically improve your qualification ability.
What are the FHA loan limits for multi-unit properties in 2026?
2026 FHA loan limits for multi-unit properties (standard counties): 1 unit: $498,257. 2 units (duplex): $637,950. 3 units (triplex): $771,125. 4 units (fourplex): $958,350. High-cost areas (NYC, LA, SF, DC, Seattle): Limits are up to 150% of standard, so a fourplex in San Francisco could have an FHA loan limit of up to $1,437,525. Key point: FHA limits on 4-unit properties are substantially higher than on single-family homes — you can buy a $950K fourplex with just 3.5% down ($33,250) if it's FHA-eligible in your area.
Can I use a conventional loan for house hacking instead of FHA?
Yes — conventional loans also allow owner-occupied 2–4 unit purchases, but with different terms: Down payment: 5% for 2-unit, 10% for 3–4 unit (vs FHA's 3.5% for all). No mortgage insurance if you put 20%+ down. No MIP for the life of the loan (FHA charges MIP for 30 years if <10% down). Higher loan limits in some areas (no FHA limit cap). Rental income counting: Same 75% of market rent rule. Conventional is better if: You can put 5–20% down and want to avoid FHA MIP (which is ~0.55%/year for 30 years). FHA is better if: You have less than 10% down, lower credit score (580–639), or higher DTI.
Related Investment & Strategy Guides
Meet Emily
Construction & Commercial Loans Expert
Emily Chen specializes in complex financing solutions for construction projects and commercial real estate investments. With 8 years of experience in construction-to-permanent loans and DSCR financing, she has funded over $200 million in construction and investment property projects. Her expertise in navigating construction loan complexities and commercial underwriting makes her invaluable for real estate investors and builders.
EXPERTISE:
KEY ACHIEVEMENT:
Funded $200M+ in construction projects