Contractor SearchGeneral Contractors in Ontario, California.
344 general contractors profiles sourced from public licensing and registration records. Check source status, then use the available direct contact details.
Ontario, CA has 344 general contractors listings in the directory drawn from California CSLB (general building). 330 showed an active license the last time this site read their source, while 5 show an expired, inactive, or suspended status — worth checking before you request a bid; 9 licenses are no longer in the state's current license file. Each profile links the authoritative public source and shows newer recorded status changes when available.
Current public general contractors listings in Ontario.
Listings whose most recent source read showed an active license.
Profiles already claimed and verified by the business.
1 public source feed this city hub.
Hong Steve
General Contractors listing in Ontario, CA. License 972839 read active on 2026-10-19.
Hostetler Construction
General Contractors listing in Ontario, CA. License 532843 read active on 2026-10-19.
Hr Garcia Construction Inc
General Contractors listing in Ontario, CA. License 1050598 read active on 2026-10-19.
Hurford Eric Construction
General Contractors listing in Ontario, CA. License 806297 read active on 2026-10-19.
Hy Global Llc
General Contractors listing in Ontario, CA. License 1072321 read active on 2026-10-19.
Hydrogen Construction
General Contractors listing in Ontario, CA. License 1106675 read active on 2026-10-19.
Iegb Home Builders Inc
General Contractors listing in Ontario, CA. License 1156949 read active on 2026-10-19.
Inland Design Build
General Contractors listing in Ontario, CA. License 1005429 read active on 2026-10-19.
Inter-City Energy Systems Inc
General Contractors listing in Ontario, CA. License 587709 read active on 2026-10-19.
Interior Experts General Builders Inc
General Contractors listing in Ontario, CA. License 638437 read active on 2026-10-19.
Island Construction & Maintenance
General Contractors listing in Ontario, CA. License 667042 read active on 2026-10-19.
Island Petroleum Builders Inc
General Contractors listing in Ontario, CA. License 776846 read active on 2026-10-19.
J & J Industrial Services
General Contractors listing in Ontario, CA. License 814328 read active on 2026-10-19.
J L G Construction
General Contractors listing in Ontario, CA. License 683195 read active on 2026-10-19.
J P Addison Construction Inc
General Contractors listing in Ontario, CA. License 1029562 read active on 2026-10-19.
J&N Maintenance Services
General Contractors listing in Ontario, CA. License 1147841 read active on 2026-10-19.
Ja Construction Inc
General Contractors listing in Ontario, CA. License 1060402 read active on 2026-10-19.
Javier Tavares Ornelas
General Contractors listing in Ontario, CA. License 1067792 read active on 2026-10-19.
Jcc Construction
General Contractors listing in Ontario, CA. License 1067037 read active on 2026-10-19.
Jcsv Builders Inc
General Contractors listing in Ontario, CA. License 1134819 read active on 2026-10-19.
Je Home Construction
General Contractors listing in Ontario, CA. License 1078677 read active on 2026-10-19.
Jesse'S Iron Works
General Contractors listing in Ontario, CA. License 792073 read active on 2026-10-19.
Jewel Construction Inc
General Contractors listing in Ontario, CA. License 915742 read active on 2026-10-19.
Jewett W H Inc
General Contractors listing in Ontario, CA. License 975875 read active on 2026-10-19.
Jfp Construction Company Inc
General Contractors listing in Ontario, CA. License 965462 read active on 2026-10-19.
Jimmy A General Construction Inc
General Contractors listing in Ontario, CA. License 971256 read active on 2026-10-19.
Jn Construction Inc
General Contractors listing in Ontario, CA. License 1001396 read active on 2026-10-19.
Jnsd Construction Inc
General Contractors listing in Ontario, CA. License 1080741 read active on 2026-10-19.
Jones Michael Craig
General Contractors listing in Ontario, CA. License 790999 read active on 2026-10-19.
Jorcast Enterprises Inc
General Contractors listing in Ontario, CA. License 559980 read active on 2026-10-19.
Joseph Construction
General Contractors listing in Ontario, CA. License 674654 read active on 2026-10-19.
Jw Builders Inc
General Contractors listing in Ontario, CA. License 1015948 read active on 2026-10-19.
K A R Construction Inc
General Contractors listing in Ontario, CA. License 595709 read active on 2026-10-19.
K P Construction Co Inc
General Contractors listing in Ontario, CA. License 790555 read active on 2026-10-19.
Kao Brian Yawching
General Contractors listing in Ontario, CA. License 897876 read active on 2026-10-19.
Kemcorp Construction Inc
General Contractors listing in Ontario, CA. License 934522 read active on 2026-10-19.
Kisba Contracting Inc
General Contractors listing in Ontario, CA. License 1021128 read active on 2026-10-19.
Koguma Sweet Home
General Contractors listing in Ontario, CA. License 1150188 read active on 2026-10-19.
Kornerstone Construction
General Contractors listing in Ontario, CA. License 1162745 read active on 2026-10-19.
Kp Builders
General Contractors listing in Ontario, CA. License 983861 read active on 2026-10-19.
Kraemer Klaus Norbert
General Contractors listing in Ontario, CA. License 529570 read active on 2026-10-19.
L D M Construction Services
General Contractors listing in Ontario, CA. License 957993 read active on 2026-10-19.
La Barge J P Construction Management
General Contractors listing in Ontario, CA. License 760763 read active on 2026-10-19.
Lassiter Construction
General Contractors listing in Ontario, CA. License 758267 read active on 2026-10-19.
Lee Ken
General Contractors listing in Ontario, CA. License 1138718 read active on 2026-10-19.
Lee'S General Construction Corp
General Contractors listing in Ontario, CA. License 1056618 read active on 2026-10-19.
Legend Construction Services Inc
General Contractors listing in Ontario, CA. License 1038753 read active on 2026-10-19.
Leothacue Enterprises Inc
General Contractors listing in Ontario, CA. License 1025024 read active on 2026-10-19.
Life Builders
General Contractors listing in Ontario, CA. License 842842 read active on 2026-10-19.
Lighthouse Construction & Remodel
General Contractors listing in Ontario, CA. License 986212 read active on 2026-10-19.
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