# Cornerstone Masonry Services Inc

> Specialty contractor · Sun Valley, CA

## License

- US-GSA-SAM LYSFATKN8XC9 (Corporation registered in SAM.gov), status Active: matched against the issuer's own file on 2026-10-23. Issuer's record: https://sam.gov/entity/LYSFATKN8XC9/coreData

## Contact

- Website: http://cornerstonemasonry.org
- Area: Sun Valley, CA
- Serves: California

## 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-masonry-services-inc-sun-valley-sam-lysfatkn8xc9/mcp
- A2A: https://douxprocess.directory/b/cornerstone-masonry-services-inc-sun-valley-sam-lysfatkn8xc9/a2a (card: https://douxprocess.directory/b/cornerstone-masonry-services-inc-sun-valley-sam-lysfatkn8xc9/agent-card.json)
- JSON: https://douxprocess.directory/b/cornerstone-masonry-services-inc-sun-valley-sam-lysfatkn8xc9.json

Listing page: https://douxprocess.directory/b/cornerstone-masonry-services-inc-sun-valley-sam-lysfatkn8xc9. Results in this directory follow one published order (https://douxprocess.directory/ranking); nobody pays for placement.