Glossary: key Archer terms

BYOM (Bring Your Own Model): Archer's flagship feature. You upload your own proprietary Excel underwriting model and Archer integrates directly into it — adding data tabs while preserving your formulas, logic, and outputs.

Chart of Accounts (COA): The mapping structure that determines how T12 line items get categorized. You can use Archer's standard COA or create custom configurations with as much or as little granularity as you need.

Comps flywheel: The compounding data advantage you build by using Archer. Every rent roll becomes a rent comp. Every T12 becomes an expense comp. More deals = more data = better benchmarking.

Custom comps: Comps derived from your own parsed data, visible only to your team. These appear alongside Archer's institutional comps, labeled "Custom" or "Customer."

IAP (In-App Parsing): Parsing documents directly in the Archer web app (as opposed to the Excel Add-in). The web app saves progress automatically and walks you through mapping step by step.

NOI (Net Operating Income): Total revenue minus total operating expenses. Archer verifies that its parsed revenue minus expenses equals the T12's stated NOI as a data quality check.

Parse Document: Extracts and saves data from a rent roll or T12 without generating a full underwrite model. Use this for adding documents to existing deals or building comp data.

Rent Roll (RR): A document listing every unit in a property with current tenant information, lease terms, and rental charges. Archer parses these to extract unit-level data and analytics.

Run Underwrite: Parses your documents AND generates your complete Excel model with comps, analytics, and all mapped data. Use this for new deal evaluations.

Save to Archer: The Excel ribbon button that syncs your work back to the web app. Saves your underwrite, trains the mapping AI, and updates your comp data.

T12 (Trailing 12 Months): An operating statement showing 12 months of income and expenses. Archer parses T12s, maps line items to your COA, and provides T12/T6/T3 summaries.

Seller propensity: Archer's scoring system that estimates the likelihood a property owner may be willing to sell, based on factors like hold period, rent optimization patterns, and market conditions.