CLEAR Home Loans · Confidential

NACHO — Product Requirements

The complete specification for the POS, the LOS, and how they connect.

Version 1.0.0 · issued 1 September 2026

Send all three together. Each product document is complete about its own half and deliberately does not restate the other's internals. The integration document is where the two halves become one system — a team handed only two of the three will invent the seam themselves, which is the most expensive thing that can go wrong on a build like this.

POS — the borrower side

For the team building the borrower-facing product

The front door: what a borrower, a referral partner and a loan officer touch. Includes the mortgage primer written from zero, 221 numbered functional requirements with acceptance criteria, and the full non-functional set.

57 pages221 requirements1.8 MB

LOS — the lender side

For the team building the operations product

The manufacturing line: processing, underwriting, closing, funding and post-close. The role and capability model, the three compliance gates, and 278 numbered functional requirements.

58 pages278 requirements2.0 MB

Integration layer — the seam

For both teams, together

How the two halves become one system: the ownership matrix, the published stage table, the push and event contracts, and the four compliance boundaries that cross between them.

14 pages1 contract0.5 MB

Written for a team that has never originated a loan

Section 2 of each product document teaches the mortgage domain from zero — what a loan is, who does what, the documents, the clocks, and the regulators. It is one shared primer, so the two halves cannot teach two different things about the same rule. Every requirement after it is written in those terms, and every rule that exists because of a regulation says so and cites it.