The house hack hierarchy: I ranked every strategy by actual cash flow
I see the same question in this forum every week: what kind of house hack should I do? After running these in Atlanta and helping other buyers set them up, here's my honest ranking of every house hack strategy by real cash flow, plus the tradeoffs nobody mentions.
Tier 4: Rent a spare bedroom to a friend. Easiest entry, worst math. One roommate at $700 to $900 offsets some mortgage but rarely changes your life. Fine as a toe in the water. Most people stop here and conclude house hacking is overrated. They just never left tier 4.
Tier 3: The classic duplex or triplex. The textbook play, and the textbook is outdated in most metros. Small multifamily has been bid up so hard that finding one where the other unit covers most of your payment is rare now. If you find one that pencils, great. Just don't spend a year waiting for a unicorn while tier 2 houses sit on the market.
Tier 2: Basement or separate entrance. This is the most underrated play in the country. Buy a single family with a finished basement or any space with its own entrance, live in one part, rent the other as a long term rental or short term stay. I do this myself. My basement rents for $2,300 a month and my out of pocket to live is about $300. Single family homes with basements are everywhere, priced normally, and nobody is underwriting the basement income when they bid. You're buying a duplex the market thinks is a house.
Tier 1: Rent by the room. The cash flow king. A client of mine bought a 6 bedroom for $250K, mortgage around $1,000, and furnished rooms at $650 to $700 put it near $4,000 a month gross while he lives there. The tradeoff is real: it's a business. Screening has to be tight, turnover is higher, and you're managing people who share a kitchen. Do not do this casually. Done right it outearns everything else on this list by a mile.
Tier 0: The stack. Combine tiers. Co living rooms upstairs, separate entrance rental downstairs. I have a client running exactly this and each side outearns what the whole house would make as one lease. This is the end game, but earn your way there. Start at tier 2 or tier 1, learn the operations, then stack.
Three rules that apply at every tier. One, the bathroom to bedroom ratio matters more than bedroom count, past 3 rooms per bath you're buying friction. Two, screen like a business no matter how casual the setup feels. Verified income, background check, rental history, every time. Three, only buy a house a normal family would buy back from you, so your exit never depends on finding another investor.
Curious where everyone here landed: which tier was your first house hack, and knowing what you know now, would you have started somewhere else?