# Cornerstone Excavating Inc

> General engineering contractor · Washington, IA

## License

- US-GSA-SAM G557SXKFF169 (Corporation registered in SAM.gov), status Active: matched against the issuer's own file on 2026-11-02. Issuer's record: https://sam.gov/search/?index=ent&sfm[simpleSearch][keywordRadio]=ALL&sfm[simpleSearch][keywordTags][0][key]=G557SXKFF169&sfm[simpleSearch][keywordTags][0][value]=G557SXKFF169

## Contact

- Area: Washington, IA
- Serves: Iowa

## Requests

Built from public records; the business has not claimed this listing. Contact it directly.

## This listing as an agent

- MCP: https://douxprocess.directory/b/cornerstone-excavating-inc-washington-sam-g557sxkff169/mcp
- A2A: https://douxprocess.directory/b/cornerstone-excavating-inc-washington-sam-g557sxkff169/a2a (card: https://douxprocess.directory/b/cornerstone-excavating-inc-washington-sam-g557sxkff169/agent-card.json)
- JSON: https://douxprocess.directory/b/cornerstone-excavating-inc-washington-sam-g557sxkff169.json

Listing page: https://douxprocess.directory/b/cornerstone-excavating-inc-washington-sam-g557sxkff169. Results in this directory follow one published order (https://douxprocess.directory/ranking); nobody pays for placement.