
The 70% Rule & The “Hidden” Yields: How to Invest in ROPA for Profit
Real Estate is Not a Passion. It is Arithmetic. Amateur investors look at a house and say, “I like the view.” Professional investors look at a spreadsheet and ask, “What is the Spread?” Here is the math behind making money with foreclosures. The Flipping Formula (The 70% Rule) When buying a “Fixer-Upper,” your Max Bid […]
Real Estate is Not a Passion. It is Arithmetic.
Amateur investors look at a house and say, “I like the view.” Professional investors look at a spreadsheet and ask, “What is the Spread?” Here is the math behind making money with foreclosures.
The Flipping Formula (The 70% Rule)
When buying a “Fixer-Upper,” your Max Bid is calculated backwards: Max Bid = (After Repair Value x 0.70) – Repair Costs
- Scenario: A renovated house in the area sells for 10M.
- The Buffer: 10M x 0.70 = 7M. (This 30% buffer covers your profit and risks).
- Repairs: You estimate 1M in repairs.
- Your Max Bid: 6M. If the auction goes to 6.1M, you stop. You let someone else lose money.
The Rental Yield Arbitrage
- Pre-Selling Condo: Price 8M. Rent 25k. Yield: ~3.7%.
- Auction Condo: Price 4M. Rent 20k. Yield: ~6.0%. Because your entry price is significantly lower, your ROI is inherently higher. You are providing the same product (housing) but your cost basis is 50% less.


