The 70% Rule Explained: How to Calculate Maximum Purchase Price
The 70% rule is the most widely used formula in fix-and-flip investing. Learn how it works, when to use it, and when to break it.
Going from one deal at a time to a dozen requires systems, not just more effort. Here's how successful operators scale.
Most flippers hit an invisible ceiling around 3–5 deals per year. Beyond that, the operational complexity, managing contractors, tracking budgets, handling lender draws, coordinating inspections, breaks what worked at a smaller scale. Scaling past this ceiling requires systems, not heroics.
The first system to build is acquisitions. A single investor sourcing deals through ad-hoc networking maxes out around 3 deals annually. Scaling requires a repeatable acquisition engine: direct mail campaigns, driving for dollars with a team of bird dogs, cold calling lists, PPC campaigns, or wholesale buyer lists. Each channel needs a dedicated budget, tracking, and optimization cycle.
The second system is project management. At 10+ deals, you need dedicated project management software (Buildertrend, CoConstruct, or similar), standardized scopes of work for common renovations, a preferred contractor list with established pricing, and a weekly rhythm of site visits and progress reviews.
The third system is capital. Scaling requires more capital than a single lender or private investor can typically provide. Build relationships with 3–5 hard money lenders, develop a private money investor list, and consider lines of credit (business credit lines, HELOCs on personal properties) for down payments and bridge funding.
Team structure changes too. At 10+ deals annually, most operators need an acquisitions manager, a project manager, a transaction coordinator, and bookkeeping support. That's four specialized roles, which can be contractors, virtual assistants, or employees depending on deal volume and geography.
Finally, financial controls matter more at scale. Monthly P&L by property, weekly cash flow forecasts, standardized KPIs (average profit per deal, days to complete, budget variance), and clear go/no-go criteria for new acquisitions prevent the chaos that destroys scaling operations.
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