ADU CITIES Contractor Directory

Hi-grade Plumbing

Also listed as: Hi - Grade Construction LLC

● Active — license status verified against CSLB public data as of November 6, 2026

☎ Call (951) 877-6117Verify this license at CSLB
CSLB license#1124162
ClassificationsB — General Building · C-36 — Plumbing
Office of recordP O Box 77332
Corona, CA 92879
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(951) 877-6117
Contractor bond$25,000 — Business Alliance Insurance Company
Workers' comp (CSLB record)Exempt
Business typeLimited Liability
License issuedJuly 24, 2024
License expiresJuly 31, 2028

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Data source: CSLB public records as of November 6, 2026. License status can change at any time — verify live at CSLB before signing a contract.