ADU CITIES Contractor Directory

Hillside Walls Engineering

Also listed as: Hillside Walls Corp

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

CSLB license#1146953
ClassificationsA — General Engineering
Office of record5256 S Mission Rd 703-180
Bonsall, CA 92003
Address as listed in the CSLB record — the office of record, not a service-area claim.
Phone (CSLB record)(760) 685-3401
Contractor bond$25,000 — Philadelphia Indemnity Insurance Company
Workers' comp (CSLB record)Workers' Compensation Insurance — State Compensation Insurance Fund
Business typeCorporation
License issuedNovember 26, 2025
License expiresNovember 30, 2027

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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.