Welcome to Plinth Portfolio
Whether you are new to investing in residential rentals or have an existing portfolio, we have the tools for you!
NEW INVESTMENTS
Will my property make a good rental?
Enter the purchase price and projected rent for an immediate investment verdict. Download the financial analysis report to fully understand your potential returns.
EXISTING PORTFOLIOS
Pro Lease Portfolio Workbook
Save 25%Track every property, lease, option, and cost in one Excel workbook — the same 4-tab system used by portfolio professionals, built for loading into AI models to create reports.
$20Download the workbook — $15Download once, use forever!Enter the deal
Live verdict belowWe work out the vacancy rate from these two numbers.
Monthly cash flow
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Cap rate
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Cash-on-cash
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DSCR
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Is this a good investment?
Enter a purchase price and monthly rent above zero to see your verdict.
50% offGet the Full Financial Analysis
A 5-year projection, stress tests, break-even rent, your maximum offer price, and actionable recommendations — delivered as a PDF you can keep. No account, no subscription.
$20 $10one-time
EXISTING PORTFOLIOS
Pro Lease Portfolio Workbook
Save 25%Track every property, lease, option, and cost in one Excel workbook — the same 4-tab system used by portfolio professionals, built for loading into AI models to create reports.
$20Download the workbook — $15Download once, use forever!How the verdict works
Strong foundation
Positive monthly cash flow, a DSCR of 1.25 or higher, and a cash-on-cash return of 8% or more.
Fair foundation
The property covers its own expenses, but the return on invested capital is modest.
Weak foundation
Negative monthly cash flow, or rent that barely covers the debt service.
Rental property calculators
Free cap rate calculator, cash on cash return calculator, cash flow, DSCR, and more — the real estate investment metrics behind the verdict, each calculated and explained in detail.
Cap rate calculator
What the property earns relative to its price, before financing.
Cash-on-cash return calculator
What your actual cash earns each year after the mortgage.
Rental cash flow calculator
How much is left each month after every bill is paid.
1% rule calculator
A 10-second screen: does the rent reach 1% of the price?
DSCR calculator
Does the rent cover the loan? What lenders check first.
BRRRR calculator
Buy, rehab, rent, refinance — how much cash is left in the deal?
What a rental property analysis tells you
A rental property analysis answers a single question before you commit capital: will this investment generate positive returns? PLINTH weighs the property's income against its real operating expenses — vacancy, maintenance, property management, taxes, and insurance — rather than relying on gross rent multiples.
Enter the purchase price and projected rent to receive an immediate verdict: a Strong foundation (positive cash flow and comfortable debt coverage), Fair (the property covers its expenses but returns are modest), or Weak (negative cash flow or insufficient debt coverage).
For a deeper evaluation, the Full Financial Analysis adds cap rate, cash-on-cash return, monthly cash flow, and DSCR — along with stress testing, a five-year projection, break-even rent, and the maximum offer price that meets your target return — delivered as a downloadable PDF.