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Portfolio rent concentration calculator

Divide one property’s rent by portfolio rent to measure simple revenue concentration.
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The short answer
How it works
3
Make the result useful
Questions landlords ask
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Portfolio rent concentration calculator
Rent & lease
Last updated: July 2026
1. Enter the values requested.
How it works
2. Review the formula shown with the result.
How it works
3. Test another scenario by changing your inputs.
How it works
4. Is this a forecast?
Questions landlords ask
5. Does it replace professional advice?
Questions landlords ask
Portfolio rent concentration calculator
Category
Rent & lease
Last updated
July 2026
The assumptions that move this result
Property rent
One property’s monthly rent.
Portfolio rent
Total comparable portfolio rent.
The short answer
1. Enter the values requested.
Portfolio rent concentration equals one property’s monthly rent divided by total portfolio monthly rent. It is descriptive arithmetic, not investment advice.
The short answer
Last updated: July 2026
Portfolio rent concentration equals one property’s monthly rent divided by total portfolio monthly rent. It is descriptive arithmetic, not investment advice.
After the estimate:
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Rent concentration calculator
Measure one property’s share of portfolio rent.
Divide one property’s monthly rent by total portfolio monthly rent to see its revenue concentration.
One property’s monthly rent
$
Total portfolio monthly rent
$
Input-driven result
Your inputs
Formula
Result below
Portfolio rent concentration
27.1%
$3,200 ÷ $11,800 portfolio rent.
Estimate based on your inputs. Not a promise of results.
Descriptive arithmetic only. It does not assess diversification, risk, vacancy, or investment suitability.
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How it works

How this tool works.

Portfolio rent concentration calculator is a simple landlord planning worksheet based on values you enter.
The output is arithmetic, not a prediction, contract, or professional recommendation.
1
Enter the values requested.
2
Review the formula shown with the result.
3
Test another scenario by changing your inputs.
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.

Calculation lens

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.
Formula
one property rent ÷ total portfolio rent
Questions landlords ask

Questions about this tool and its limits.

Is this a forecast?

No. It calculates only from the numbers you enter.

Does it replace professional advice?

No. Use the relevant records, agreement, and qualified advice for a real decision.

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.
Editorial ownership
Written and maintained by the Aptoria editorial team
Editorial method reviewed July 28, 2026. Aptoria reviews scope, source fit, examples, limitations, links, and publication gates. This record does not claim attorney, CPA, lender, appraiser, or other independent professional sign-off.
How Aptoria researches and reviewsReport a correction
Built by a landlord who's done every one of these jobs by hand.
Aptoria was built by an owner-operator managing a Brooklyn portfolio — the 11pm calls, the awkward rent texts, the April receipt-pile — not by a software team guessing at the problem.
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Ran the numbers? See what Aptoria does today.

Aptoria is AI property management software where you set the limits. Plans start at $19/month for up to 5 units. Its routine-work automation is planned, and decisions always stay with you.
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