Free Developer Tools
Free tools and open-source projects for real estate investors — built in the open, free to use.
Live Web Apps
Featured
Grandmother House Scorer
Score any listing against the holy-grail “grandmother house” deal method: bones, systems, cosmetics, margin math, and a deal pipeline tracker.
CapEx Reserve Planner
Turn every major system’s age into a monthly savings number, so the $12,000 roof is funded before it ambushes you.
House-Hack Analyzer
Price a 2–4 unit house-hack honestly: full PITI, rental income haircuts, and your true monthly cost stacked against your current rent.
Mortgage Payoff Visualizer
Drag the extra-payment slider and watch years of mortgage payments get erased, with a gold burn-down chart and your interest saved.
Closing-Day Funds Checklist
The wire-fraud guard for closing day: hard-stop verification steps, exact cash-to-close math, and the classic fraud tells.
Refinance Break-Even Watcher
Rates dropped — should you refi? Honest break-even math: monthly savings versus closing costs, framed around how long you’ll keep the loan.
BRRRR Deal Analyzer
Run the full BRRRR loop on any deal — cash invested, refi proceeds, cash left trapped, and the verdict: true BRRRR or money pit.
House Hack Calculator
Buy a multi-unit, live in one: your true out-of-pocket housing cost after rents, and whether the hack beats renting.
Security Deposit Ledger
Track every tenant’s deposit, the interest you owe, and move-out deductions — with a printable itemized statement.
Closing Cost Estimator
Every line item of your closing costs in plain English, summed into one cash-to-close number.
Real Estate × Blockchain
Open-source smart-contract templates for bringing property on-chain.
Deed NFT Template
ERC-721 template tying a property deed to an NFT, with the recorded deed’s hash anchored on-chain.
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