House Hacking ROI Calculator
Property Details
Duplex=2, Triplex=3, Fourplex=4
Financing
FHA allows 3.5% for 2-4 units
Rental Income
What each tenant pays
What you'd pay to rent elsewhere
Monthly Expenses
Property tax, insurance, maintenance, utilities, HOA (not covered by tenants)
How to Use This Calculator
House hacking is when you buy a multi-unit property (duplex, triplex, fourplex), live in one unit, and rent out the others. The rental income reduces or eliminates your housing costs.
The Strategy:
- Buy 2-4 unit property with low down payment (3.5-5% FHA)
- Live in one unit, rent the others
- Tenants pay most/all of your mortgage and expenses
- You live for free while building equity
- After 1 year, move out, rent your unit, and repeat
Tip: This is one of the fastest ways to build real estate wealth with minimal capital.
About This Calculator
House Hacking ROI Calculator is designed to reduce manual errors and give repeatable outputs when you need quick, reliable answers.
Estimate the ROI impact of offsetting owner-occupied housing costs with rental income from additional units or rooms.
If your workflow expands, pair this calculator with Rental Property Cash Flow Calculator and Cash-on-Cash Return Calculator to cross-check assumptions and build a stronger analysis chain.
Formula
Effective Housing Cost = Owner Expenses - Rental Income; ROI = Annual Savings / Cash Invested * 100
Example Calculation
The worked example below demonstrates how the input fields translate into the final output. Use it as a quick validation pass before entering your own numbers.
- monthlyOwnerHousingCost: 3200
- monthlyRentalIncome: 2100
- cashInvested: 85000
Explanation of Results
Result Interpretation
Rental offsets can dramatically reduce net housing expense, improving cash efficiency versus traditional owner occupancy.
FAQ
Does this include vacancy and maintenance risk?
You should include vacancy, maintenance, and turnover assumptions to avoid overestimating realized returns.
Is house hacking mainly a cash flow strategy?
It can be both cash-flow and wealth-building, especially when owner financing terms and appreciation are favorable.
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See Also
Other calculators in Real Estate Investment
Cap Rate Calculator
Cash-on-Cash Return Calculator
Mortgage Points Break-Even Calculator
1% Rule Calculator (Rental Property Screening)
Rental Property Cash Flow Calculator
1% Rule / 2% Rule Rental Screening Calculator
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