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Licensed general contractors and ADU builders in Ontario · page 3 of 4

325 contractors with a Ontario mailing address hold an active (CLEAR) CSLB B General Building license in CSLB's license file dated Oct 20, 2026. Get quotes from up to 3 of them →

A B General Building license covers jobs with two or more unrelated trades, like an ADU, an addition or a remodel. A B contractor can't take a stand-alone plumbing, electrical or roofing job unless they also hold that specialty license or subcontract it to someone who does.
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A Featured spot on this general building & adu page for Ontario is a paid ad for a License Verified contractor, labeled "Ad" every time. It sits apart from the directory and never changes the order below. From $49/mo. Join the waitlist →
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A Featured spot on this general building & adu page for Ontario is a paid ad for a License Verified contractor, labeled "Ad" every time. It sits apart from the directory and never changes the order below. From $49/mo. Join the waitlist →

All 325 licensed general contractors and ADU builders

Order: A–Z by business name (neutral, stated). Showing 201–300.
LS CONSTRUCTION
B · Lic. #1118857 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
LVL CONSTRUCTION INC
B · Lic. #1077369 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
M & R CONSTRUCTION SERVICES INC
B · also C-8, C-27, C-29 · Lic. #508404 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MARDONA SHENOUDA CONSTRUCTION BUILDER
B · Lic. #1095276 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
MARLU CONSTRUCTION
B · also A, C-8 · Lic. #960949 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MC GHEE CONSTRUCTION INC
B · also A, C-8 · Lic. #884036 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MCQ CONSTRUCTION INC
B · Lic. #1132913 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MEGA CONSTRUCTION LLC
B · Lic. #1132714 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
METHOD DESIGN BUILD
B · Lic. #1108931 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
METRO RF SERVICES INC
B · also C-7, C-10 · Lic. #895236 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MICHAEL CRAIG JONES
B · Lic. #790999 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
MINGHUI LI
B · also C-27 · Lic. #1028942 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
MOONLITE CONSTRUCTION
B · Lic. #995505 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MOORE UNITED CONSTRUCTION INC
B · also C-10, C-15, C-54 · Lic. #764972 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MORENO'S CONSTRUCTION INC
B · Lic. #1095952 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
MURGUIA CONSTRUCTION
B · Lic. #780053 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
MURGUIA CONSTRUCTION INC
B · Lic. #766953 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
MUSTANG CONSTRUCTION
B · Lic. #1020934 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
MYCO CONSTRUCTION
B · also C-17, C-20, C-27, C-33… · Lic. #853581 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
NAVONA PLACEMAKING
B · Lic. #1156579 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
NEFF CONSTRUCTION INC
B · Lic. #790576 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
NEW CONSTRUCTON
B · Lic. #532419 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
NEXT LEVEL CONTRACTORS INC
B · Lic. #1088668 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
NORTON GENERAL CONTRACTORS
B · also C-10, C-20 · Lic. #909595 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PAC BUILDERS CORP
B · Lic. #1107900 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PACKS CONSTRUCTION
B · also C-7 · Lic. #453095 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PAM PAN XU
B · Lic. #1150481 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PARKCREST CONSTRUCTION INC
B · Lic. #600254 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PASCAL & LUDWIG CONSTRUCTORS INC
B · also A, HAZ · Lic. #373525 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PAUL B HOFER III
B · Lic. #368051 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PBS CONSTRUCTION SERVICE LLC
B · Lic. #1077808 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PENGHAO YUAN CONSTRUCTION
B · Lic. #1054088 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PENNCO CONSTRUCTION GROUP INC
B · Lic. #972111 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PERERA CONSTRUCTION & DESIGN INC
B · Lic. #585965 · Ontario 91764
Workers' comp: via leasing/temp firm
✓License Verified CSLB file · Oct 20, 2026
PERFECT CONSTRUCTION CO
B · Lic. #696650 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PHIL'S CONSTRUCTION
B · Lic. #916449 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PINZE ZHANG
B · Lic. #1087764 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PONA'S CONSTRUCTION
B · Lic. #955730 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PREFAB GRANITE & TILE DEPOT INC
B · also C-54 · Lic. #975056 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PRIME CONSTRUCTION SERVICES INC
B · Lic. #985031 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PRIME RENOVATE INC
B · also C-27 · Lic. #1076129 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PROJECT COUNTERTOPS COMPANY INC
B · also C-54 · Lic. #1021347 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PROJECT X DEVELOPER INC
B · Lic. #1106298 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
PROPERTY BUILDERS CONCEPTS & MAINTENANCE INC
B · Lic. #967277 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
PROPERTY MANAGEMENT SERVICE
B · Lic. #968317 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
Q A T GENERAL CONSTRUCTION
B · Lic. #1085728 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
R C A CONSTRUCTION CLEAN UP INC
B · also C-9, D-63 · Lic. #996848 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
R J P GENERAL CONTRACTING
B · Lic. #659596 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
R W NOLTE CONSTRUCTION INC
B · Lic. #1042244 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
R3 PAINTING
B · also C-33 · Lic. #757555 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
RAMIREZ CONSTRUCTION SERVICES INC
B · Lic. #1017026 · Ontario 91761
Workers' comp policy on file
Active — CSLB flag: workers' comp suspension pending
RANCHO CONSTRUCTION SPECIALTIES
B · Lic. #1113850 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
RED & PURPLE INC
B · Lic. #1092661 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
REMA BUILDERS
B · also C-10, C-29 · Lic. #1142912 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
RICHARD JOE SAENZ
B · Lic. #727122 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
RICO INC
B · also C-33 · Lic. #831227 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
RIGGIO CONSTRUCTION INC
B · Lic. #806241 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
RIGHT CALL SERVICES INC
B · Lic. #1151470 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ROCKWALL CONSTRUCTION COMPANY
B · Lic. #777138 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ROVAC BUILDER
B · Lic. #1110101 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
RUDOLF CARL THEILACKER CONTRACTOR
B · also A · Lic. #279711 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
S C M CONSTRUCTION INC
B · Lic. #935736 · Ontario 91762
Workers' comp: via leasing/temp firm
✓License Verified CSLB file · Oct 20, 2026
SAMUEL ELIAS MILAM
B · also C-10 · Lic. #937003 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SANDOVAL CONSTRUCTION
B · Lic. #876715 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SANTANA CONSTRUCTION ENTERPRISES
B · Lic. #848705 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SANTOYO CONSTRUCTION
B · Lic. #1131018 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SCORPION REMODELING CONSULTING DBA UNITED WATER RESTORATION
B · Lic. #1127537 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SHARK GENERAL BUILDING INC
B · Lic. #1130440 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SHENGYU LIU CONSTRUCTION
B · Lic. #1065175 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SIERRA CONSTRUCTION
B · Lic. #681123 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SIMPLE RESTORATION INC
B · also C-36 · Lic. #1066954 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SINGULARITY CONSTRUCTION INC
B · Lic. #1105261 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SITELOGIQ INC
B · also A, C-10 · Lic. #1054171 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SKYLINE SERVICES LLC
B · Lic. #1088918 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SKYLINECRAFT CONSTRUCTION INC
B · also C-10 · Lic. #1122803 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SOLGAR CONSTRUCTION INC
B · Lic. #1082852 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SOLID INTEGRITY CONSTRUCTION
B · Lic. #1161433 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SOLORIO CONSTRUCTION
B · Lic. #917843 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SPEC CONSTRUCTION & DEVELOPMENT INC
B · Lic. #972188 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SPEC CONSTRUCTION CO INC
B · also A, C-4, C-8, C-9… · Lic. #419626 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SPICER CONSTRUCTION
B · Lic. #662772 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
STANGER CONSTRUCTION AND REMODEL
B · Lic. #1103331 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
STEVE CROSSMAN
B · also C-6 · Lic. #362535 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
STEVE HONG
B · Lic. #972839 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
STEVEN ELLIOTT CONSTRUCTION
B · Lic. #863929 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
STRUCT-TECH BUILDERS
B · Lic. #568920 · Ontario 91764
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SUNPRIDE CONSTRUCTION INC
B · Lic. #1162476 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SUNWEST BUILDERS TENANT IMPROVEMENTS INC
B · Lic. #1009363 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
SUPER MARIO CONSTRUCTION
B · Lic. #958569 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
SUTAS HANGTHAISONG
B · Lic. #887657 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
THE EAST LOS ANGELES COMMUNITY UNION
B · Lic. #622252 · Ontario 91764
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
THOMAS MCGEE DEVELOPMENT INC
B · Lic. #1117295 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
THOR MC ANDREW CONSTRUCTION
B · Lic. #742776 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
TR CONSTRUCTIONS LLC
B · also D-28, D-34 · Lic. #926469 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
TRAIT CONSTRUCTION
B · Lic. #1028664 · Ontario 91761
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
TRIDON 2 CONTRACTORS
B · Lic. #1129917 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
TRINITY FRAMING
B · Lic. #1030427 · Ontario 91761
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
ULTIMATE CONSTRUCTION
B · Lic. #1098701 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026
UNUM CONSTRUCTION
B · Lic. #809385 · Ontario 91762
Workers' comp: exempt
✓License Verified CSLB file · Oct 20, 2026
UWING CONSTRUCTION INC
B · Lic. #1143733 · Ontario 91762
Workers' comp policy on file
✓License Verified CSLB file · Oct 20, 2026