About This Calculator
The House Flip Profit Calculator analyzes fix-and-flip deals by calculating true profitability after all purchase, renovation, holding, and selling costs.
The 70% Rule is the most widely used screening tool in house flipping: Maximum Purchase Price = (ARV × 70%) - Renovation Costs. This leaves a 30% buffer for closing costs, carrying costs, and profit. Never violate the 70% rule without strong justification.
Common mistakes that kill flip profits: underestimating renovation costs (always add 15–20% contingency), overestimating ARV (be conservative), and underestimating holding time (budget for 2x your expected timeline).