Licensed General Engineering (A) contractors in California

The California Contractors State License Board (CSLB) lists 15,259 California contractors classified A (General Engineering (A)). Each entry below links to a full dossier with license status, insurance, bond, and enforcement — as of July 4, 2026.

Showing 6,721–6,780 of 15,259 contractors

Intercontinental Civil Engineering Estimators
Santa Rosa, CA · CSLB #1143550 · as of July 4, 2026
Active · clear
Interindustry Solutions Traffic INC
Lawndale, CA · CSLB #1132750 · as of July 4, 2026
Active · clear
Intermountain Slurry Seal INC
Watsonville, CA · CSLB #462443 · as of July 4, 2026
Active · clear
International Cadd Services INC
Sacramento, CA · CSLB #806051 · as of July 4, 2026
Active · clear
International Construction Builders LLC
Alta Loma, CA · CSLB #1106960 · as of July 4, 2026
Active · clear
International Cooling Tower USA INC
Deer Park, CA · CSLB #590673 · as of July 4, 2026
Active · clear
International Line Builders INC
Portland, CA · CSLB #782515 · as of July 4, 2026
Active · clear
International Paving Services LLC
Mentone, CA · CSLB #770392 · as of July 4, 2026
Active · clear
International Swim Center-2026 LLC
Pleasanton, CA · CSLB #1146215 · as of July 4, 2026
Active · clear
International Tank & Pipe CO
Clackamas, CA · CSLB #670930 · as of July 4, 2026
Active · clear
International Towers LLC
Tallahassee, CA · CSLB #1058937 · as of July 4, 2026
Active · clear
Interphase Environmental INC
Pico Rivera, CA · CSLB #1148064 · as of July 4, 2026
Active · clear
Interstate Civil Construction
Wrightwood, CA · CSLB #1074144 · as of July 4, 2026
Active · clear
Interstate Construction INC
Roseville, CA · CSLB #341026 · as of July 4, 2026
Active · clear
Interstate Decisive Contractor-i D C
San Jose, CA · CSLB #427352 · as of July 4, 2026
Active · clear
Interstate Grading And Paving INC
South San Francisco, CA · CSLB #366020 · as of July 4, 2026
Active · clear
Intertex General Contractors INC
Valencia, CA · CSLB #482946 · as of July 4, 2026
Active · clear
Intertie Incorporated
Sausalito, CA · CSLB #1094392 · as of July 4, 2026
Active · clear
Interwest Pacific LTD
Encinitas, CA · CSLB #575110 · as of July 4, 2026
Active · clear
In The Dirt Engineering
Ramona, CA · CSLB #1087155 · as of July 4, 2026
Active · clear
Intra Link Communications INC
Bonita, CA · CSLB #847327 · as of July 4, 2026
Active · clear
Intralox LLC
Harahan, CA · CSLB #1128548 · as of July 4, 2026
Active · clear
Intren West LLC
Pomona, CA · CSLB #1103190 · as of July 4, 2026
Active · clear
Intrepid Communications INC
Costa Mesa, CA · CSLB #962790 · as of July 4, 2026
Active · clear
Inventive Resources INC
Salida, CA · CSLB #996682 · as of July 4, 2026
Active · clear
Invert Construction Corp
San Bernardino, CA · CSLB #1044261 · as of July 4, 2026
Active · clear
Cesar R Aranda DBA Invision Engineering Construction
Fresno, CA · CSLB #1088295 · as of July 4, 2026
Active · clear
Inyon Corrosion Services LLC
Glendale, CA · CSLB #1059461 · as of July 4, 2026
Active · clear
I O Environmental And Infrastructure Incorporated
San Diego, CA · CSLB #957419 · as of July 4, 2026
Active · clear
Ioi Engineering
Chandler, CA · CSLB #1046698 · as of July 4, 2026
Active · clear
Ionian Construction INC
Millbrae, CA · CSLB #572753 · as of July 4, 2026
Active · clear
Buzz Ioppolo Excavating
Lincoln, CA · CSLB #628909 · as of July 4, 2026
Active · clear
Ipf Construction LLC
Stockton, CA · CSLB #1157177 · as of July 4, 2026
Active · clear
Ips Design Build
Sacramento, CA · CSLB #1041861 · as of July 4, 2026
Active · clear
I Q Building And Engineering INC
Modesto, CA · CSLB #642985 · as of July 4, 2026
Active · clear
I Ramirez Corporation
San Fernando, CA · CSLB #741986 · as of July 4, 2026
Active · clear
Irby Construction Company
Richland, CA · CSLB #163338 · as of July 4, 2026
Active · clear
Irish Construction
Rosemead, CA · CSLB #97962 · as of July 4, 2026
Active · clear
Irish Electric
Tulare, CA · CSLB #560131 · as of July 4, 2026
Active · clear
Irish Excavation
Morgan Hill, CA · CSLB #1084826 · as of July 4, 2026
Active · clear
Iron Alliance Engineering INC
Alpine, CA · CSLB #1024028 · as of July 4, 2026
Active · clear
Ironcladce
San Diego, CA · CSLB #885679 · as of July 4, 2026
Active · clear
Ironclad General Engineering INC
Riverside, CA · CSLB #954859 · as of July 4, 2026
Active · clear
Iron Construction & Engineering Corp
North Hills, CA · CSLB #940834 · as of July 4, 2026
Active · clear
Iron Crop Engineering INC
Vista, CA · CSLB #907355 · as of July 4, 2026
Active · clear
Irondale Industrial Contractors INC
Birmingham, CA · CSLB #922891 · as of July 4, 2026
Active · clear
Iron Horse Builders
Lakeport, CA · CSLB #365170 · as of July 4, 2026
Active · clear
Iron Horse Construction
Palo Cedro, CA · CSLB #598901 · as of July 4, 2026
Active · clear
Dennis Ironi
Los Angeles, CA · CSLB #1009537 · as of July 4, 2026
Active · clear
Ironman Enterprises INC
El Cajon, CA · CSLB #978371 · as of July 4, 2026
Active · clear
Ironmark Earthworks INC
Moorpark, CA · CSLB #1068672 · as of July 4, 2026
Active · clear
Iron Mountain Concrete Corp
Las Vegas, CA · CSLB #1157463 · as of July 4, 2026
Active · clear
Iron Mountain General Engineering INC
Redding, CA · CSLB #705922 · as of July 4, 2026
Active · clear
Iron Path Corp
Corona, CA · CSLB #1149144 · as of July 4, 2026
Active · clear
Iron Poppy INC
Sacramento, CA · CSLB #869567 · as of July 4, 2026
Active · clear
Ironrock Builders
Martinez, CA · CSLB #1094279 · as of July 4, 2026
Active · clear
Ironstep Engineering INC
Carson, CA · CSLB #1137573 · as of July 4, 2026
Active · clear
Ironstone Construction
Davis, CA · CSLB #588588 · as of July 4, 2026
Active · clear
Ironwave Builders
Buena Park, CA · CSLB #1147831 · as of July 4, 2026
Active · clear
Ironwood Alliance INC
Santa Rosa, CA · CSLB #402286 · as of July 4, 2026
Active · clear

Data sourced from the California Contractors State License Board (CSLB), current as of July 4, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.