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Business & eCommerceGenerated accuracy model review: 2026-05-06
Real Estate Flip accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- Profit = ARV - (Purchase + Repairs + Holding + Closing). ROI = (Profit / Total Cost) * 100.
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Purchase Price: $200,000
- Repair Costs: $50,000
- After Repair Value: $350,000
- Holding Costs: $5,000
- Closing/Selling Costs: $20,000
Expected outputs
- Net Profit: $75,000.00
- ROI: 27.27%
- Total Project Cost: $275,000.00
Known limitations
- Does not calculate capital gains tax implications.
Assumptions
- This calculator assumes one buy, one rehab, and one sale with all major costs summarized in the entered buckets.
- ARV is treated as the final sale price, not a range of possible outcomes.
- Negative purchase, repair, holding, closing, or sale values are treated as invalid.
Unit handling
- Purchase Price accepts values in $.
- Repair Costs accepts values in $.
- After Repair Value accepts values in $.
- Holding Costs accepts values in $.
- Closing/Selling Costs accepts values in $.
- Net Profit is displayed as currency.
- ROI is displayed as a percentage.
- Total Project Cost is displayed as currency.
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
- Currency outputs are displayed with standard US dollar formatting.
- Percent outputs are displayed with two decimal places.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current real-estate-flip-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Real Estate Flip.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.