Source controls
Sources and update policy
Synthesis Data prioritizes traceable primary and first-party sources, records retrieval evidence and keeps unresolved items separate from verified source material.
Source hierarchy
- Current Synthesis Data records and approved source register.
- Government, regulator, municipal, school-district and official program sources.
- First-party platform documentation and licensed data sources.
- Reputable industry research with a disclosed method and publication date.
- Secondary commentary for discovery only, with important claims verified against the underlying source before publication.
Authorization before ingestion
A public website being readable does not automatically authorize bulk collection, commercial reuse or redistribution. Automated ingestion requires an approved source record that identifies the source owner, purpose, method, permitted use and restrictions.
Freshness
Update frequency is source-specific. A report should show the applicable observed date, data period or retrieval date rather than imply that every component is continuously updated. If the responsible source has not published a current value, the prior value should be dated or the field should remain unresolved.
Currently controlled source candidates
| Source | Current control state | Permitted candidate use |
|---|---|---|
| Federal Housing Finance Agency House Price Index | Restricted / inactive pending production activation | Aggregate house-price index and appreciation context; not individual-property valuation. |
| U.S. Census Bureau Data API | Restricted / inactive pending production activation | Aggregate demographic, housing, economic and geographic context; no re-identification. |
| MLS/listing data | Not authorized without a licensed feed | No scraping or production use until SDA has an explicitly authorized data agreement. |
Corrections
When a material source fact or interpretation changes, the affected record or published item should be corrected with a retained audit trail where the operating system supports one. Historical values should not be silently relabeled as current.
Questions about a source
Email support@synthesisda.com with the report or page name and the source item in question.