House Hacking for Beginners

House hacking is one of the most powerful wealth-building strategies available to first-time buyers: buy a property, live in part of it, and rent the rest to cover your mortgage. Done right, your tenants pay your housing cost — you live for free, or even for a profit.

Why it works

Owner-occupant financing is dramatically cheaper than investor financing. You can buy a 2–4 unit property with as little as 3.5% down (FHA) or 5% down (conventional), at the same rate a single-family buyer gets. An investor buying the same building would need 20–25% down and pay a higher rate. That spread is the entire edge.

The math

Take a $400K duplex. You put 5% down ($20K) plus ~$15K closing. Monthly PITI is roughly $2,800. You live in one unit and rent the other for $1,600. Your net housing cost drops to $1,200 — less than most studios — and you're building equity on a $400K asset with $20K out of pocket.

Popular strategies

• ▸Multi-family (most popular): buy a duplex, triplex, or fourplex. Live in one unit, rent the others. FHA allows 3.5% down on 2–4 units.
• ▸Single-family with ADU: add an Accessory Dwelling Unit (guest house, garage conversion). Live in the main house, rent the ADU.
• ▸Room rentals: rent spare bedrooms. Lowest barrier, highest personal cost.

The gotchas

• ▸House hacking means being a landlord while you live next door. Choose tenants carefully.
• ▸FHA requires you to live in the unit for at least 12 months — you can't buy, rent both sides, and leave.
• ▸Multi-family in good school districts is scarce. The best deals are often near universities or transitioning neighborhoods.

When you're ready to move out

After 12–24 months, move out and rent your unit too. The property becomes a full investment: two rents covering a mortgage you no longer pay, plus appreciation. The House Hack Analyzer models effective housing cost, future cash flow, and a 5-year equity projection with your real numbers.