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MillionaireGuide

Real Estate

House Hacking

Live in part of a property while tenants pay the mortgage

Updated 2026-08-04

At a glance

Capital needed
Medium capital$500 – $10k
Time to first income
MonthsPart-time friendly
Income ceiling
Salary replacement~$30k – $80k/yr
Risk
Low2 out of 5
Effort model
Semi-passive
Route to wealth
Cash flow
Scalability
2 out of 5
Competition
2 out of 5
Typical earnings
Eliminates or greatly reduces housing cost, typically $600–$2,000/month saved
Startup cost
3–10% deposit on a residential mortgage, often $10,000–$40,000

How it works

You buy a property with more than one living space — a duplex, a house with a basement flat, or simply spare bedrooms — live in one part and rent out the rest. The crucial advantage is financing — because you live there, you qualify for owner-occupier mortgages with far smaller deposits than investment loans require.

How to start

  1. 01

    Understand the financing advantage

    Owner-occupier mortgages commonly need 3–10% down against 20–25% for investment loans. On a $300,000 property that is the difference between $15,000 and $70,000.

  2. 02

    Find a property that divides well

    Separate entrances, separate bathrooms and a sensible layout matter far more than finish quality. Privacy is what makes this sustainable for years.

  3. 03

    Analyse it as an investment, not a home

    Run the numbers as though you were a tenant paying market rent for your own space. If it only works because you live free, it will not work when you move out.

  4. 04

    Screen tenants properly

    You will live with these people. Reference checks, income verification and a proper written agreement matter more here than in any other rental situation.

  5. 05

    Move out and repeat

    After the required occupancy period, buy the next one the same way and rent the first out entirely. Two or three cycles builds a portfolio on small deposits.

Honest trade-offs

What works

  • By far the lowest capital requirement of any property strategy, thanks to owner-occupier financing
  • Eliminates or dramatically reduces your largest monthly expense
  • Teaches landlording at small scale while you live on site
  • Repeatable — each cycle adds a property acquired with a small deposit

What does not

  • You live alongside your tenants, with all the loss of privacy that implies
  • Occupancy requirements mean you cannot move out immediately
  • Limited to a small number of cycles before lenders object
  • Problems cannot be delegated when they are happening in your building

Risks and failure modes

  • A difficult tenant becomes a difficult housemate you cannot easily avoid
  • Mortgage terms may explicitly require you to occupy the property for a set period
  • Local rules on lodgers, licensing and short lets vary widely and are easy to breach unknowingly

Common questions

In most markets, tenants cover 60–100% of the mortgage. Saving $1,200 a month on housing is a $14,400 annual improvement in your position, and it comes before tax in effect because it is a cost avoided rather than income earned.

Often yes, by renting spare rooms or converting part of the property. The financing advantage is smaller since you have already bought, but the cash flow benefit is the same.

Usually two to four cycles before lenders start treating you as a portfolio investor. Each cycle typically requires living in the new property for a defined period, so plan on roughly one purchase per year or two.

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