House Hacking ROI Calculator

Frequently Asked Questions

What types of properties qualify for house hacking?

Duplexes, triplexes, and fourplexes are most common. Single-family homes with a separate ADU, in-law suite, or basement apartment also work. Properties with 5+ units require commercial financing.

Do I need special landlord insurance?

Yes. Standard homeowner's insurance typically does not cover rental activity. You need a landlord or dwelling policy for rental units, at a premium 25-40% higher than standard homeowners insurance.

How does rental income affect my mortgage qualification?

Some lenders allow up to 75% of projected rental income from non-occupied units to count toward qualifying income, significantly increasing your loan eligibility. Ask your mortgage officer specifically.

What are the tax implications of house hacking?

The rental portion generates deductible expenses including depreciation, proportional mortgage interest, taxes, insurance, and maintenance. At sale, the Section 121 exclusion applies only to the owner-occupied portion.

Can I house-hack with a single-family home?

Yes, through renting bedrooms or an ADU or basement apartment. This requires fewer financing resources but requires sharing living space or a separate unit. Check local zoning first.

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How It Works

House hacking means buying a multi-unit property (duplex, triplex, fourplex) or a single-family home with a rentable unit, living in one unit, and using the rental income from other units to offset your housing cost. This calculator uses a standard 30-year amortization formula to compute your monthly mortgage payment, adds the prorated tax and insurance, subtracts rental income to show your net monthly housing cost, and computes the break-even rent needed to cover all costs.

When rental income exceeds total housing expenses, the surplus is shown as positive cash flow. The cash-on-cash return measures that surplus as a percentage of your down payment - if rental income more than covers all costs, you are essentially living for free and earning a return on your down payment.

Key Metrics

Net monthly housing cost: Your total expenses minus rental income. Negative values mean positive cash flow - the property pays you more than it costs.

Break-even rent: The minimum rental income needed to cover all housing costs. Use this as the floor for your rental pricing.

Cash-on-cash return: Annual surplus cash flow divided by the down payment. Reflects the investment return on capital deployed.

Owner-occupied loan benefits: FHA loans allow 3.5% down on 2-4 unit properties when you occupy one unit; conventional requires 5% for a duplex and 10% for 3-4 units.

Tips

Use FHA or conventional owner-occupied financing to access lower down payments and rates than pure investment loans - living in the property for one year is typically required.

Research rental demand and comparable rents in the area before purchasing - overestimated rents can make an unprofitable deal look attractive in this calculator.

Account for periodic vacancy in your planning even if you have a good long-term tenant - run the numbers with 5-10% vacancy to stress-test.

The rental income you earn is taxable, but you can deduct the rental portion's share of mortgage interest, taxes, depreciation, insurance, and maintenance.

After one year of owner-occupancy, some lenders will allow you to refinance to a conventional investment property loan and move out - check with your lender before purchasing.

FAQ

What types of properties qualify for house hacking?

The most common are duplexes (2 units), triplexes (3 units), and fourplexes (4 units). Single-family homes with a separate in-law suite, accessory dwelling unit (ADU), or basement apartment also qualify. Properties with 5+ units are commercial real estate and require commercial financing, losing access to owner-occupied loan programs.

Do I need special landlord insurance?

Yes. A standard homeowner's insurance policy typically does not cover rental activity. You need a landlord policy (also called a dwelling policy or DP3) for the rental units, or a multi-family policy that covers both owner-occupied and rental portions. Premium is typically 25-40% higher than standard homeowners insurance.

How does rental income from house hacking affect my mortgage qualification?

When purchasing, some lenders allow up to 75% of projected rental income from non-owner-occupied units to count toward your qualifying income. This can significantly increase how much loan you can qualify for. Requirements vary by lender and loan type - ask your mortgage officer specifically about this.

What are the tax implications of house hacking?

The rental portion of the property generates deductible expenses: depreciation of the rental units (27.5-year straight line), proportional mortgage interest, taxes, insurance, maintenance, and management. When you sell, the Section 121 exclusion applies only to your owner-occupied portion; the rental portion may trigger depreciation recapture (25%) and long-term capital gains tax.

Can I house-hack with a single-family home?

Yes, through renting individual bedrooms to housemates or renting an ADU, basement apartment, or garage conversion. This requires fewer financing resources and may be easier to manage, but requires sharing your primary living space or having a clearly separate rental unit. Check local zoning and HOA rules before purchasing for this purpose.

House Hacking ROI Calculator

Frequently Asked Questions

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