Property Decision Desk

Rental Cashflow

NOI Builder

Build net operating income line by line, the way an appraiser reads it.

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Educational estimate only. Not financial, tax, lending, or real-estate advice. Markets, taxes, and local conditions vary.

How to read this decision

NOI Builder makes the cashflow left after vacancy, repairs, and reality concrete instead of a guess. Build net operating income line by line, the way an appraiser reads it.

The math runs locally in your browser with no signup, so you can test assumptions freely and compare runs in seconds.

Methodology & next steps

This tool runs entirely in your browser. Change one input at a time, compare scenarios, and export the report before you talk to an agent or lender.

  1. Start with realistic income, price, rate, and cost assumptions for your market.
  2. Use presets or Snapshot as B to stress-test a second path.
  3. Read the verdict, charts, and schedule — then verify taxes, insurance, and comps locally.
  • Copy report or Print / PDF for a shareable decision page.
  • Save scenarios on this device or copy the share link in the address bar.
  • Export CSV/JSON when you want numbers in a spreadsheet.

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About NOI Builder

What question does NOI Builder answer?

Build net operating income line by line, the way an appraiser reads it. It focuses on the cashflow left after vacancy, repairs, and reality, so you can compare realistic paths instead of a single optimistic listing photo.

How does NOI Builder work?

Enter your own numbers in the fields, press the button, and compare the paths shown. Adjust one assumption at a time to see which input moves the result most.

Is NOI Builder free?

Yes. NOI Builder is free, needs no account, and runs entirely in your browser — your inputs are never uploaded.

Is this financial or real estate advice?

No. NOI Builder produces educational estimates only. Markets, taxes, lending rules, and local conditions vary, so confirm big decisions with a qualified professional.