Why Kaison
What makes this different from a spreadsheet, a generic calculator, or the tool you're currently using.
Your spreadsheet tells you what you want to hear.
Every real estate investor starts with a spreadsheet. You plug in your purchase price, your rehab estimate, your rent guess, and the formulas tell you the deal is great. Of course it does — you gave it optimistic numbers and it gave you optimistic results. A spreadsheet has no opinion. It doesn't know that your rehab estimate is 20% low because you've never renovated a kitchen before. It doesn't know that your rent estimate is based on the nicest unit in the neighborhood, not the median. It doesn't know that your timeline assumes everything goes right, which it never does.
The spreadsheet gives you a number. You get excited. You make an offer. Four months later, you're $15K over budget, two months behind schedule, and the rent appraisal came in $200 below your estimate. The spreadsheet was technically correct — the formulas worked. But the inputs were wrong, and nothing in the tool warned you.
This is the fundamental problem: a calculator that doesn't challenge your assumptions is just confirming your bias.
Generic Spreadsheet
Same Deal in Kaison
Same deal. Same numbers. Different conclusions — because Kaison tests what happens when your estimates are wrong.
Kaison doesn't just calculate. It underwrites.
Underwriting is not arithmetic. Any calculator can subtract your cost basis from ARV and tell you the equity. Underwriting asks harder questions: What if your contractor runs 15% over budget? What if the rehab takes 30% longer? What if the appraisal comes in 3% below your ARV estimate? What does the deal look like then?
Kaison runs every deal through an 8-step pipeline that produces two complete analyses: your target scenario (everything goes as planned) and a P90 scenario (the 90th percentile adverse case — things go meaningfully wrong, but not catastrophically). If a deal only works when everything goes right, Kaison tells you. That's the difference between a calculator and an underwriting engine.
The 8-Step Underwriting Pipeline
Intelligence that compounds.
Every estimate gets stress-tested.
Other tools show you one scenario: your inputs, your outputs. Kaison shows you two: what you expect and what to prepare for. The P90 model applies evidence-based buffers to every variable — rehab costs, timeline, rent, and property value. If a deal survives the P90 scenario, you know it has margin for reality. If it collapses, you know before you write the check.
This isn't paranoia. It's the same approach institutional investors use on every acquisition. The difference is they pay analysts to build these models from scratch each time. Kaison does it in seconds.
| Target | P90 | Delta | |
|---|---|---|---|
| Rehab Cost | $40,000 | $46,000 | +$6,000 |
| Timeline | 4 months | 5.2 months | +1.2 mo |
| Carry Costs | $7,200 | $9,360 | +$2,160 |
| Total Cost Basis | $198,200 | $213,360 | +$15,160 |
| Equity | $21,800 | $6,640 | -$15,160 |
| CoC Return | 11.2% | 5.8% | -5.4% |
| Deal Gate | GO | MARGINAL |
The tool gets smarter every time you use it.
Here's what happens in every other tool: you analyze 50 deals using the same generic assumptions. Your estimates are consistently 18% low on rehab and 12% optimistic on timelines. The tool never notices. The 51st analysis uses the exact same assumptions as the first.
In Kaison, after you complete a deal, you file a retrospective — what you estimated versus what actually happened. The system calculates your personal variance and adjusts future P90 buffers to match YOUR track record, not a generic industry assumption. If you consistently underestimate kitchen renovations by 25%, Kaison knows. If you're reliably accurate on timelines, Kaison loosens that buffer and surfaces deals that conservative defaults would have rejected.
After 5 completed deals, your analyses are calibrated to YOUR investing style. After 10, Kaison knows your blind spots better than you do. No spreadsheet does this. No other deal analysis tool does this.
Variance Calibration Over Time
| Deal | Rehab Variance | P90 Buffer |
|---|---|---|
| #1 | +22% | 15% (default) |
| #2 | +18% | 15% (default) |
| #3 | +25% | 15% (learning activates) |
| #4 | +12% | 22% (calibrated) |
| #5 | +8% | 20% (improving) |
| #6 | +5% | 18% (tightening) |
Your estimates are improving. Kaison's buffers track that.
GO, MARGINAL, or NO_GO. Not some meaningless score.
Spreadsheets and most tools give you a number and leave you to figure out what it means. Is an 8% CoC return good? Depends on the market, your risk tolerance, your financing cost, and a dozen other factors. A raw number without context is just data — not insight.
Kaison scores every deal across five weighted dimensions (cash return, equity, debt coverage, risk exposure, and stress-test resilience), produces a 0-100 composite score, and renders a clear verdict: GO (proceed to offer), MARGINAL (review the flags), or NO_GO (walk away). The verdict is backed by specific risk flags that tell you exactly what's wrong and how severe it is.
You can still override it. It's your money and your deal. But you're overriding with full knowledge of the risks, not making decisions in the dark.
Let's be clear about what this tool doesn't do.
Kaison is not a property search engine. It doesn't find deals for you. It doesn't scrape the MLS or send you alerts when a property hits the market. You find the deals — Kaison tells you whether they're worth pursuing.
Kaison is not a property management platform. It doesn't collect rent, screen tenants, or coordinate maintenance requests. It tracks your financials, documents, and tax categories for the properties you own, but it's not competing with AppFolio or Buildium.
Kaison is not a spreadsheet replacement in the generic sense. You can't build arbitrary formulas or pivot tables. It does one thing — real estate deal intelligence — and it does it better than any spreadsheet because it was built for exactly this problem.
And Kaison is not a financial advisor. It gives you better data to make your own decisions. The verdict is a recommendation based on your thresholds, not a guarantee.
How Kaison compares to tools you might know.
| Kaison | Spreadsheet | DealCheck | Stessa | REI Hub | |
|---|---|---|---|---|---|
| Basic deal calc | ✓ | ✓ | ✓ | — | — |
| Stress testing under adverse scenarios | ✓ | — | — | — | — |
| Variance learning | ✓ | — | — | — | — |
| Deal scoring with pass/fail verdict | ✓ | — | — | — | — |
| Automatic risk flag detection | ✓ | — | — | — | — |
| Expense tracking | ✓ | ✓ | — | ✓ | ✓ |
| Tax categorization | ✓ | — | — | partial | ✓ |
| Receipt OCR | ✓ | — | — | ✓ | — |
| CPA export | ✓ | — | — | ✓ | ✓ |
| Contractor scoring | ✓ | — | — | — | — |
| AI assistant | ✓ | — | — | — | — |
| BRRRR vs Flip strategy comparison | ✓ | — | ✓ | — | — |
| Portfolio tracking | ✓ | ✓ | limited | ✓ | ✓ |
| Tax-ready expense tracking | ✓ | — | — | ✓ | ✓ |
| Learns from your history | ✓ | — | — | — | — |
Built by an investor, for investors.
Kaison was built by someone running actual BRRRR and flip deals. Not by a software company that interviewed investors for a quarter and built what they thought the market wanted. The underwriting engine exists because its creator needed it, built it for personal use, and refined it over dozens of real deals before making it available to anyone else.
Every feature in the platform earned its place by solving a real problem on a real project. The P90 model exists because a rehab ran 20% over budget and the generic "15% contingency" wasn't enough. The variance learning system exists because after 5 deals, the original estimates were consistently off in predictable ways, and the tool should have been adjusting for that. The contractor dispatch score exists because choosing the wrong sub twice cost real money.
This is a tool built from the inside of real estate investing, not from the outside looking in.
Learn More
See Kaison in action with real numbers.
Walk through a complete BRRRR analysis from purchase to refinance using Kaison's underwriting engine.
Compare flip vs BRRRR scenarios side-by-side and learn when each strategy makes sense.
Understanding risk flags, critical warnings, and what the NO_GO verdict actually means for your deal.
What the P90 scenario means, how buffers work, and why stress-testing your deal matters.