Real estate investment calculators & Excel models
Underwriting tools for landlords, BRRRR investors, short-term rental operators and small-balance commercial buyers. Every calculator ships a formula-complete Excel model.
Who these models are built for
Real estate underwriting is a multi-variable problem, which is precisely why it survives the shift to AI-generated answers. A search engine can give you the cap rate formula in two lines; it cannot hand you a linked model where changing the vacancy assumption recomputes NOI, DSCR and your ten-year equity position at once. That is what these five tools do.
- Mom-and-pop landlords with 1–20 doors
- BRRRR and fix-and-flip investors recycling capital
- Airbnb and short-term rental operators
- Small-balance commercial and net-lease buyers
- Real estate agents advising investor clients
Rental property cash flow calculator
Enter the purchase price, loan terms and rent — get NOI, Cap Rate, cash-on-cash return and DSCR instantly, then download the 3-tab Excel model with 30-year amortization.
rental-property-cash-flow-model.xlsx · Summary & Inputs · Amortization Schedule · Cash Flow Waterfall
Airbnb & short-term rental revenue projection
Model seasonality month by month, then see turnover costs, platform fees, NOI and cash flow — and download the 365-day Excel projection with a cleaning cost matrix.
str-revenue-projection.xlsx · Seasonality Calendar · Cleaning & Turnover · P&L Statement
BRRRR method investment calculator
Model purchase, rehab, bridge loan and refinance to see exactly how much capital comes back out — and download the renovation budget and refinance workbook.
brrrr-investment-model.xlsx · Renovation Budget · ARV & Refinance · Long-term Hold Returns
Landlord rent roll & expense tracker
Track every unit, every rent payment and every invoice inline — collection rate, economic vacancy and deductible expenses update live, and the download maps to IRS Schedule E.
rent-roll-expense-tracker.xlsx · Rent Roll · Operating Expense Ledger · Schedule E Summary
Commercial real estate underwriting model
Underwrite NLA, rent escalation, DSCR and a 10-year levered IRR with an exit cap rate — then download the rent roll, pro forma and debt & equity workbook.
cre-underwriting-model.xlsx · Rent Roll & Escalations · 10-Year Pro Forma · Debt & Equity
How to underwrite a rental property in seven steps
- Verify the rent. Three comparable rentals currently available or recently leased. Never the listing’s pro forma.
- Recalculate the taxes. In reassessment states, use the post-sale assessed value, not the seller’s current bill.
- Price insurance properly. A landlord policy costs 15–25% more than a homeowner policy; an STR endorsement costs more still.
- Budget maintenance at 5–10% of rent. Every property has a roof and a water heater; the only question is which year.
- Model vacancy, not optimism. 5–8% for long-term rentals, 30–45% for short-term, and a full month of turnover cost when a tenant leaves.
- Run the DSCR test. If NOI divided by annual debt service is under 1.20x, the deal is not financeable through a refinance.
- Download the model and stress it. Raise the rate 100 bps, cut rent 10%, add a month of vacancy. If the deal survives, it is a deal.
Real estate and personal finance are consistently among the highest-CPM advertising categories, and this audience reads the full page — the models are the reason they scroll to the download.