House hacking (the cheat code to start)

House hacking is the one strategy the internet never shuts up about, because it sounds like getting paid to have roommates. Here is the version that doesn’t fit in a caption: you are buying a small business and moving into the break room.

I like house hacking. That should worry you. I like it because it takes the two most expensive beliefs in real estate — “management is easy” and “tenants are a spreadsheet row” — and beats them out of you at wholesale prices, while your loan is small and your mistakes are still survivable. Everyone pays for that education eventually. House hackers just get the tuition discount.

The plain version

You occupy part of a property and rent out the rest — the other unit of a duplex, a basement, spare bedrooms. Your housing cost drops, sometimes to zero. In exchange, you become the landlord, the maintenance department, the collections office, and the downstairs neighbor. Simultaneously. For the same customers.

That last sentence is the whole strategy. Read it again before the next open house.

What the cute name is hiding

Every “cheat code” video runs the same underwriting: full rent, zero vacancy, zero repairs, and a tenant who behaves like an NPC. Then you close, and the NPC gets a dog.

The real miss is bigger than the math. People underwrite the property and never underwrite their own life. Your tenant isn’t a line item — they’re forty feet from your bed, they know your car, and they knock when the heat acts up during your kid’s birthday dinner. None of that shows up in the calculator. All of it shows up in year one.

You were about to skim the lender paragraph, so let’s do it now: your loan has occupancy rules, your insurance policy has an opinion about rental use, and your city has rules you haven’t read. The people who skip those three documents don’t find out from a blog. They find out from a denial letter.

The 10 p.m. water heater

You buy the duplex. You live in one unit, rent the other. Sunday, 10 p.m., the tenant’s water heater dies, and you discover the previous owner’s plumbing philosophy was “paint over it.” The tenant is angry in person, because you live here too, and the emergency plumber does not price like a YouTube thumbnail.

Congratulations. You now understand reserves. Reserves are the cover charge for owning things that break — skip the cover charge and the building sells you a ticket at retail, at night, with an audience.

Documents before the spare bedroom becomes a business

• Loan occupancy requirements and any rental restrictions.
• Insurance policy for owner-occupied rental use.
• Lease, house rules, security deposit handling, and local landlord requirements.
• Inspection report, repair list, and emergency vendor contacts.
• Rent comps by actual unit or bedroom, not vibes from a forum.

That list is not homework. It is the entire difference between “cheat code” and “expensive story you tell at parties.”

The live-with-it check

Ask what problem would make you miserable if it happened in the same building where you sleep. Then price it, write the rule for it, or admit the strategy isn’t worth your personal exposure.

People call that pessimism. Lenders call it underwriting. Do it before the wire, and house hacking really is the closest thing to a cheat code this business has — a paid apprenticeship where the teacher lives downstairs and never lets you skip class.