CalculateRealEstateROI

Portfolio · Guide

Common Portfolio Mistakes

Concentration, stale equity, and emotional decisions — the three errors that erode portfolio performance.

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

Key takeaways

  • Geographic concentration risk.
  • Holding properties past their ROE.
  • Emotional attachment to assets.
  • No portfolio-level reporting.
  • Skipping annual review.

Core concepts

Concentration

30%+ in one market or asset = systemic risk.

Stale equity

Equity that earns below opportunity cost.

Emotion

Personal history clouds capital decisions.

Step-by-step framework

  1. 1Map concentration.
  2. 2Compute ROE per property.
  3. 3Annual review with discipline.

Common mistakes to avoid

  • Refusing to sell first property.
  • Doubling down on losing market.

Frequently asked questions

Concentration threshold?

30% in any single dimension.

Stale equity sign?

ROE < 6%.

Best decision tool?

Annual portfolio review.

Sell winners?

Hold winners, sell losers.

Action checklist

  • Concentration map.
  • ROE per property.
  • Annual review.
  • Discipline framework.

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