Here's a question we get almost every week: "Should I keep renting, or is it finally time to buy?" It usually comes with a knot of anxiety — the sense that renting is throwing money away, that prices only go up, that you're falling behind. So we built the real model, with today's rates and a real rental comp, and committed to letting the numbers land wherever they land.
The setup: same $200,000. Two paths.
Our subject is a $1,000,000 home — a 2-bed, 2-bath in the kind of neighborhoods our clients are actively shopping right now: West Adams, Culver City, and South LA. The only question is what to do with the same $200,000 in cash:
- Owner: puts $200,000 down on the $1M home (20% down). Pays all-in carrying costs from income each month.
- Renter: invests the same $200,000 in a broad index fund at ~8% annually — then leaves it alone. Pays rent from income each month.
This is the correct comparison. Both people deploy the same capital at the start. Nobody is banking the "difference" every month and reinvesting it, because in the real world that money goes toward rent.
Monthly cost — rent vs. own a $1M home vs. duplex
So the single-family owner spends about $7,200 a month, the duplex owner nets $6,928 after the tenant's contribution, and the renter pays $3,500. The monthly gap is real — and it doesn't disappear. What changes the calculus is what both parties do with their capital and what happens to it over time.
Where the same $200K ends up — 5, 7, and 10 years.
The renter's index fund grows well: $200,000 at 8% for 10 years becomes about $431,000. That's a strong return. But the owner's equity at the same 10 years is over $1,000,000 — more than double.
Net wealth by horizon — owner equity vs. renter portfolio
Why the owner wins: leverage.
When you invest $200,000 in an index fund at 8%, you made 8% on $200,000. Simple. But when you put $200,000 down on a $1,000,000 home and it appreciates 6% in a year, the entire asset gained $60,000 — and you controlled it with just $200,000. That's a 30% return on your cash from appreciation alone, in year one. The bank funded the rest at a fixed rate they can never raise.
Warren Buffett has called the long fixed-rate mortgage one of the best financial instruments a household can access. The loan is fixed while inflation quietly erodes the real value of the debt. If rates fall, you refinance. If rates rise, you keep your cheap payment. No margin call, no forced liquidation — no comparable instrument lets an ordinary person deploy this kind of leverage on a real asset with this degree of downside protection.
The leverage effect — year-one return on your cash
The quiet advantages: forced savings and a frozen payment.
Every mortgage payment has two jobs: paying interest to the bank, and paying down the loan. That second piece — principal reduction — is equity you build whether you think about it or not: nearly $9,000 in year one and $121,791 by year 10, on top of ~$791K in appreciation. And here's the behavioral truth most analyses skip: almost nobody actually invests the difference. A mortgage removes the choice — every payment automatically builds equity.
Meanwhile, the biggest piece of your payment (principal and interest) is locked for 30 years while rent climbs about 3% a year. Your $3,500 rent grows to nearly $4,700/mo by year 10 and keeps going; your P&I stays frozen at $5,057 — the same check you wrote on day one. Inflation is the renter's relentless adversary and the homeowner's quiet ally.
The bonus move: buy a duplex, let a tenant pay your mortgage.
Now the play that changes the entire analysis: buy a duplex, live in one unit, and rent the other for $2,000 a month. Same $1,000,000 purchase price — but because it's owner-occupied, you can put as little as 5% down: just $50,000. (With under 20% down you'll pay PMI — about $673/month on a $950K loan — until your balance hits 80% of the original value, typically around year 7–10.)
Buy owner-occupied
5% down ($50K) on a $1M duplex with owner-occupied financing. Gross carry ≈ $8,928/mo including PMI.
Rent the second unit
A tenant paying $2,000/mo drops your net cost to $6,928 — and rents rise ~3%/yr while your mortgage stays frozen.
Build equity on the full asset
Your $50K controls a $1M appreciating property. By year 10 you've built ~$878K in equity, net of selling costs.
The duplex owner puts in $50,000 and builds $878,000 in equity by year 10. The same $50,000 in an index fund ends at $108,000. That's a $770,000 gap from the same starting capital.
Meanwhile the tenant has paid you roughly $275,000 in rent over those ten years, covering a substantial portion of your carrying costs. On a return-on-invested-cash basis, the duplex is the most powerful entry-level move in Los Angeles — it's why we write about house-hacking a duplex and the power of duplex ownership so often.
So what's the smart move?
The math here is not a coin flip. With the same starting capital, the homeowner's leveraged equity significantly outpaces the renter's portfolio at every horizon we modeled — a pattern consistent with 35 years of LA appreciation data. Owning isn't the only path to wealth, but for most people — who won't actually invest the difference every month for ten years — owning wins because it makes the right financial behavior automatic.
The wrong question is "rent or own?" in the abstract. The right question is what the right price, neighborhood, and structure look like for your cash and timeline. Run your own numbers in our investor calculator, or talk to us about buying or selling.
Key takeaways
- Renting is cheaper month-to-month ($3,500 vs. ~$7,200 all-in) — but builds zero equity.
- Same $200K deployed: the owner leads by $215K at 5 years and $573K at 10.
- Leverage turns a 6% home gain into a 30% cash-on-cash return at 20% down.
- Your P&I is frozen for 30 years; rent compounds ~3% every year.
- The duplex house-hack: $50K down builds ~$878K in 10 years — the strongest play per dollar.
Frequently asked questions.
Is it cheaper to rent or buy in Los Angeles right now?
Month to month, renting is cheaper — a comparable 2BR/2BA in West Adams or Culver City runs ~$3,500 versus ~$7,200 all-in to own a $1M home with 20% down. But the right comparison is what happens to the same starting capital over 5, 7, and 10 years — and there the homeowner wins by a wide margin.
What does PMI stand for, and do I have to pay it?
PMI stands for Private Mortgage Insurance. Lenders require it when your down payment is under 20%. It protects the lender (not you) if you default. On a $950,000 loan with 5% down it runs ~$673/month, and it automatically drops off once your balance reaches 80% of the original value — typically around year 7–10.
What's the correct way to compare renting versus buying?
Deploy the same starting capital at the outset: the down payment goes either into the home or into an index fund, and both parties pay housing costs from income. At 6% home appreciation and 8% index returns, the owner leads by $215K at 5 years, $347K at 7, and $573K at 10.
Why is a fixed-rate mortgage such powerful leverage?
A 30-year fixed lets you control a full-priced appreciating asset at a locked rate. A 6% gain on a $1M home is $60,000 — a 30% return on a $200K down payment. Refinance if rates fall, keep your payment if they rise, and let inflation erode the real value of the debt.
What is house hacking and does it work in Los Angeles?
Buying a duplex, living in one unit, and renting the other — often with just 5% down. On a $1M duplex, a $2,000/mo tenant drops your net cost to $6,928/mo, and your $50,000 builds ~$878,000 in equity over 10 years versus ~$108,000 in an index fund.
This article is for general informational and educational purposes only and is not financial, investment, tax, or legal advice. All figures are approximate and illustrative as of May 2026. Appreciation, index returns, and rents are not guaranteed; leverage magnifies losses as well as gains. Consult your own advisors before making any decision.
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