sondio

Sondio is a public-records platform for environmental professionals, home buyers, investors, and litigators who need structured searches of environmental and related public records. It publishes reports built from the same records platform that can also be queried directly.

Its available report is the Environmental Records Report, priced at $35 per property. The report compiles federal and state regulatory records at ASTM E1527-21 search radii and is intended as input to a Phase I ESA, not a substitute. The page says the report includes six federal record categories, with examples such as Superfund, RCRA, Brownfields, LUST, UST/AST, and state remediation. The report is delivered with a static map, citation links, and a downloadable PDF, and it is described as a structured search of public records rather than a professional opinion.

Sondio also exposes the underlying data directly. The platform section describes an interactive map built with maplibre and vector tiles, offered with a free tier and no card required. A catalog covers 80+ source-linked datasets, including federal, state, and a growing international list. The REST interface supports record queries by geography or attribute and includes stable v1 endpoints, JSON, and signed-URL exports. An authenticated MCP server is also available so an agent can run a search the same way a person does.

The reports catalog currently lists one report as available now and several in development, including a Home Hazard Brief, Mineral Production Snapshot, Operator Compliance Score, and Facility History Exhibit, each aimed at different user groups such as home buyers, realtors, mineral owners, royalty holders, investors, aggregators, banks, litigators, and nonprofits. The company page also notes that Sondio is a report service on the public record and that it is not an environmental consultant.