Steps
Use a fixed order: rent, vacancy, operating costs, debt service, reserves. Skip a line and two “identical” deals stop being comparable.
For homeowner costs, Total Cost of Home Ownership is the conceptual map; your spreadsheet is the checklist.
Checks
If totals disagree between you and a counterparty, do not recalculate until you both show line items side by side.
Still stuck? Re-read Related lesson with your numbers in hand—not the example numbers on this page.
Check your numbers now
Worked mini example
Procedure pass: gross rent, minus 8% management, minus taxes and insurance you pay, minus $200 monthly reserve, then P&I. Anything missing?
Two tempos
| Skipped step | What breaks |
|---|---|
| Jump to headline price or ticker | Miss expenses, fees, or timing |
| One-shot math | No sensitivity to rate, rent, or return |
| Trust a screenshot | Stale assumptions versus today’s quote |
Slow checklist, then tool Fast tool, then verify lines
Sensitivity pass
Core lesson
Go deeper: Total Cost of Home Ownership — if one number still does not feel right, enter it in the calculators above and change one input at a time to see what drives the result.
Use the calculator
FAQ
- Where is the main lesson?
Total Cost of Home Ownership is the hub with related lessons linked from it.
- Which calculator should I open first?
Use Rent vs buy or Home afford for housing tradeoffs; Loan or Amortization for payments and equity.