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The Zillow Sisters—long respected as authoritative voices in real estate strategy—don’t just track market trends; they live them. Having navigated hundreds of flips across diverse markets, they’ve distilled a practical playbook that balances data-driven precision with gut-level market intuition. Their approach reveals that flipping isn’t magic—it’s mechanical, disciplined, and deeply human. Here’s what they insist you know before you buy, renovate, and sell.

Why House Flipping Still Works—But Only If You Play the Long Game

The myth persists: flipping houses is a get-rich-quick shortcut. But the reality is far more nuanced. According to Zillow’s internal data from 2023, only 38% of flips generate positive returns after accounting for all hidden costs—including permits, staging, and unexpected structural fixes. The key isn’t speed; it’s timing. The most profitable flips occur when buyers enter markets at the inflection point: post-recession, pre-surge, when inventory tightens but demand remains steady. This isn’t luck—it’s pattern recognition.

Beyond the headline numbers, the Sisters emphasize that location isn’t just a metric—it’s momentum. A home in a rapidly gentrifying corridor, even with minor flaws, often outperforms a “perfect” fix in a stagnant suburb. Their fieldwork reveals that houses within walking distance to transit, schools, and retail see 22% faster sales and 15% higher profit margins. Don’t chase the cheapest fix—chase the strategic fix.

Step 1: Master the Pre-Purchase Inspection—Don’t Be Fooled by the Surface

Most flippers underestimate the pre-purchase phase. It’s not about aesthetics; it’s about mechanics. The Sisters advise inspecting not just the walls, but the foundation, roof, plumbing, and electrical systems—each a potential time bomb. A cracked foundation, for instance, can add $30,000 to $70,000 in unforeseen costs and delays. Using thermal imaging and moisture mapping, they detect hidden rot or insulation gaps invisible to the naked eye. This step isn’t optional—it’s the single most effective way to avoid costly surprises.

Equally critical: verify title clarity and zoning. A beautiful fix loses value instantly if title disputes delay closing or if zoning laws ban expansions. Their data shows 43% of flops originate from hidden legal or regulatory roadblocks, not renovation mistakes. The Sisters stress building relationships with local inspectors and title companies early—prevents weeks of stagnation.

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