Cornerstone Construction Co

California licence 427183 · Sole Owner

Also known as Baugh Richard L

1860 S Tintah Drive, Diamond Bar, CA 91765

(909) 861 7978

CLEAR

Licence expired

Classifications

Bond and insurance

Contractor bond
$25,000
Hudson Insurance Company · #30044171
Workers' compensation
Exempt

Licence timeline

Issued
August 26, 1982
Expires
August 31, 2026
Registry updated
July 17, 2026

Los Angeles County · estimating tools for California steel work