---
title: "Build an expanded San Francisco development due-diligence evidence package with cross-source chronology, administrative attention items, explicit completeness and source gaps, official-source provenance manifest, machine-readable continuation calls, repeat-poll guidance through check_property_changes, and interpretation boundaries."
method: POST
path: "/v1/development/due-diligence"
---

# Build an expanded San Francisco development due-diligence evidence package with cross-source chronology, administrative attention items, explicit completeness and source gaps, official-source provenance manifest, machine-readable continuation calls, repeat-poll guidance through check_property_changes, and interpretation boundaries.

`POST /v1/development/due-diligence`

## Request

- Base URL: `https://localproof.davisvillelabs.com`
- URL: `https://localproof.davisvillelabs.com/v1/development/due-diligence`
- Auth: none declared

## Request body

- object: Resolve one property or place before running the requested LocalProof operation.
  - `address` string, required: Street address or place to research. Include locality information when available.
  - `city` string: Optional city used to disambiguate the address and route it to a supported LocalProof jurisdiction.
  - `state` string: Optional state name or abbreviation. Current released jurisdictions are in California; use CA or California.
  - `unit` string: Optional unit, suite, or apartment identifier when it is relevant to property identity.

## Response `200`

LocalProof result with additive Davisville Receipt Envelope v1

- object

## Other responses

- `402`: Stablecoin payment required
- `422`: Unsupported, ambiguous, or insufficient evidence

---

[API](https://skmtc.dev/davisvillelabs/apis/localproof-api.md) · [All operations](https://skmtc.dev/davisvillelabs/apis/localproof-api/llms.txt) · [OpenAPI document](https://skmtc.dev/davisvillelabs/apis/localproof-api/revisions/07d17aa8c071?raw)