Make the result useful
portfolio rent concentration
This worksheet makes portfolio rent concentration explicit from the exact figures you enter. Review the period and basis of every amount before comparing results.
Use a conservative scenario as well as the base scenario; the calculation describes assumptions rather than predicting behavior.
The assumptions that move this result
Property rent
One property’s monthly rent.
Portfolio rent
Total comparable portfolio rent.
one property rent ÷ total portfolio rent
Read the result as a planning measure for the selected period.
Read the number in context
Worked scenario
$3,200 ÷ $11,800 = 27.1% concentration.
Edge case
A vacant property may show zero collected rent but still create economic exposure.
It is descriptive, not a diversification recommendation.
Before you act
• Confirm every input uses the same time period.
• Test a downside scenario before relying on the result.
• Keep source records with the decision.
Formula
one property rent ÷ total portfolio rent
What period should I use?
Use one consistent reporting or planning period for every input.
Does this predict performance?
No. It only performs the stated arithmetic.
Can it replace records or advice?
No. Confirm decisions with source records and appropriate professional guidance.