CalculateRealEstateROI

BRRRR · Guide

The 70% Rule Explained

Why the 70% rule still anchors BRRRR underwriting and when to bend it.

Reviewed by Keiron Brown, Founder & Editor, CalculateRealEstateROI · Educational estimates only — not investment, financial, tax, or legal advice

Key takeaways

  • 70% leaves margin for cost and appraisal overruns.
  • Bending the rule requires conservative ARV.
  • 75% works only in stable, well-comped markets.
  • Pure value-add deals can sustain 65%.
  • Always model 65/70/75 sensitivity.

Core concepts

Origin

Flipper margin baked in — adapted to BRRRR to ensure refi-out.

Math

Purchase + rehab + carrying ≤ 70% × ARV.

When to bend

Tight market with verified comps and seasoned operator.

Step-by-step framework

  1. 1Pull 5 ARV comps.
  2. 2Compute 65/70/75 ceilings.
  3. 3Offer at 70 max.
  4. 4Walk if seller won't move.

Common mistakes to avoid

  • Inflating ARV.
  • Excluding carrying costs.
  • Treating contractor's estimate as final.

Frequently asked questions

Can BRRRR work at 75%?

Yes if appraisal is rock-solid and refi LTV holds.

What if seller won't sell at 70?

Walk. Pipeline solves single-deal scarcity.

Is 70% before or after rehab?

ARV is post-rehab. Subtract rehab to find max purchase.

Does the rule apply to commercial BRRRR?

Replaced by cap-rate underwriting on 5+ units.

Action checklist

  • 5 ARV comps.
  • Carrying costs included.
  • 65/70/75 modeled.
  • Offer at 70 ceiling.

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