House Hacking Calculator
Calculate how much you can reduce your housing costs by renting out part of your home.
House Hacking Strategy
House hacking is living in your investment property and renting out the other units or rooms. This strategy allows you to dramatically reduce or eliminate your housing costs while building equity.
Property & Financing
FHA: 3.5% for 2-4 units
Monthly Expenses
Rental Setup
Compare to Renting
What you'd pay if renting instead
House Hacking Analysis
Investment Summary
Monthly Cash Flow
🎉 You're living for FREE (or profiting)!
Housing Cost Reduction
Reduction in housing costs
✓ FHA Eligible
This property may qualify for an FHA loan with just 3.5% down, making it more accessible for first-time buyers.
House Hacking Benefits
- ✓ Reduce or eliminate housing costs
- ✓ Build equity while living in the property
- ✓ Qualify for owner-occupied financing (lower down payment)
- ✓ Gain landlord experience with lower risk
- ✓ Tax benefits of property ownership
Getting Started with House Hacking
Property Types
Duplex, triplex, or fourplex (up to 4 units qualifies for residential financing). Or rent out rooms in a single-family home.
FHA Advantage
FHA loans allow you to buy a 2-4 unit property with just 3.5% down, as long as you live in one unit for at least one year.
Build Wealth
Your tenants help pay your mortgage, you build equity faster, and you can move out after a year and keep it as a rental property.
House Hacking: Turning Your Housing Bill Into an Asset
House hacking means buying a small multi-unit property (or a home with rentable rooms), living in part of it, and letting tenant rent absorb your housing costs. It is the most common on-ramp into rental property investing because owner-occupants get financing terms investors cannot touch: FHA loans allow 2-4 unit purchases with 3.5 percent down, and owner-occupied conventional loans are similarly generous. This calculator answers the core question of any house hack: after collecting rent from the units you do not occupy, what does your own housing actually cost each month, and how does that compare to renting a similar place?
The key output is your net housing cost: mortgage plus taxes, insurance, HOA, utilities, and maintenance, minus rental income. Even when that number does not reach zero, the spread between it and market rent is money you can redirect into savings or the next property, all while tenants pay down your loan and you build equity.
A Worked Example
Say you buy a $400,000 fourplex with an FHA loan at 3.5% down ($14,000) and finance $386,000 at 7% over 30 years, giving a mortgage payment of about $2,568. Add $400 in property taxes, $150 insurance, $200 utilities, and $300 budgeted maintenance, and total monthly outlay is roughly $3,618. You live in one unit and rent the other three at $1,200 each, bringing in $3,600. Your net housing cost is about $18 per month, a 99.5% reduction, while a comparable rental would cost you $1,500. That is nearly $18,000 per year in avoided rent on a $14,000 down payment, before counting loan paydown or appreciation.
One honest caveat: this simplified model excludes FHA mortgage insurance premiums, which add both an upfront charge and a monthly amount on low-down-payment loans, and it assumes full occupancy of the rented units. Build in a vacancy cushion and get real MIP quotes before treating a near-zero result as guaranteed.
What Makes a Good House Hack Market
The strategy works best where unit rents are high relative to purchase prices, so a $700,000 duplex in a coastal metro often hacks worse than a $350,000 triplex in a secondary market. When comparing candidate properties in the calculator, watch the housing cost reduction percentage rather than the absolute dollar figure, and stress-test the deal at one vacant unit. A property that still beats your current rent with one unit empty is a resilient hack; one that only works at full occupancy is a bet on everything going right in year one, which is also the year you are learning to be a landlord.
Frequently Asked Questions
Can I really buy a fourplex with 3.5% down?
Yes, if you live in one of the units. FHA financing allows owner-occupants to buy properties with up to four units for 3.5 percent down, provided you move in within 60 days and live there for at least one year. Conventional owner-occupied loans on 2-4 unit properties are also available at 5 percent down in many cases. Investor loans on the same building would typically require 25 percent.
Does house hacking mean I live for free?
Sometimes, but the honest goal is a large reduction, not always zero. If your tenants’ rent covers most of the mortgage, taxes, insurance, and upkeep, your net housing cost might drop from $1,500 to a few hundred dollars or less. Whether you reach zero depends on local rent-to-price ratios, your down payment, and how many units you rent out.
What happens after the one-year owner-occupancy period?
After satisfying the occupancy requirement, you can move out, rent your former unit, and keep the low-down-payment loan in place. Many investors repeat the process: buy another owner-occupied property, live there a year, and build a portfolio one house hack at a time while each previous property becomes a fully rented investment.
Do lenders count future rental income when qualifying me for the loan?
Often, yes. For 2-4 unit owner-occupied purchases, many lenders will credit a portion, commonly 75 percent, of the market rent from the non-owner units toward your qualifying income, based on an appraiser’s rent schedule. This can significantly raise the purchase price you qualify for compared to a single-family home, though exact rules vary by loan program.