Underwriting a property deal still begins with a pile of documents: an offering memorandum, a rent roll, twelve months of operating history, a term sheet. It ends in a workbook somebody built by hand. The model is the analyst's. Assumptions live in cells nobody else opens. By the time a number reaches the investment committee, the reasoning behind it is reconstructed from memory rather than read, and checking it means rebuilding it.
Reia is an agentic underwriting operating system for real-estate investment teams. A deal workspace holds the Agent, the model, the graph, statements and library over one governed state. Above it, a portfolio board carries the whole book by stage, status and owner. The Agent runs a directed first pass and the model computes deterministically. Nothing enters the current underwriting except through review: source and proposal, calculated consequence, then a named reviewer who accepts, edits or rejects. It runs on Agos, as a managed cloud product or inside a boundary the firm controls.
The site opens with the name explaining itself: I A M, R E I A unfolds letter by letter into Institutional Asset Management, Real Estate Investment Agent, a caret blinking at the end of it. Prose sits in Atkinson Hyperlegible, every figure and label in monospace, so numbers read as numbers. Diagrams are drawn in code rather than exported, repainting for light, dark and phone. Each screenshot carries a caption saying where it came from. A product that will not assert a number without its source earns a page built the same way.
