PDProperty Deal Calculator

Methodology

Know what the model is doing before you trust the output.

Property Deal Calculator separates content, assumptions, executable formulas, release history, and professional verification.

What Calculator Core owns

  • Typed calculator definitions and formula validation.
  • Immutable drafts, releases, bindings, and rollback.
  • Front-end rendering, REST calculation, and PDF/report contracts.

What still needs verification

  • Parcel-level taxes, insurance, HOA, and local operating costs.
  • Lender terms, amortization, prepayment, and financing fees.
  • Legal, tax, appraisal, zoning, permitting, and market-specific constraints.