Every contractor below holds an active California license with an office of record in Canyon Country, verified against CSLB public data as of November 6, 2026: general builders — A (General Engineering) and B (General Building), the classifications that can build an ADU — and the licensed trades ADU construction uses, C-10 Electrical, C-36 Plumbing and C-5 Framing & Rough Carpentry. Listings are alphabetical; the featured builder is labeled, never ranked.
★ FEATUREDMars Construction Industries Corp
ADU Cities' own design-build team
CSLB #1138550 · A · B · C-36 · C-20
Building ADUs across Los Angeles, Orange, Riverside, San Bernardino, San Diego & Ventura counties
Ross Mclaren Fuel Systems Inc
CSLB #1134271 · Canyon Country, CA
A
CSLB #1102314 · Canyon Country, CA
B
CSLB #1106733 · Canyon Country, CA
B
CSLB #1147952 · Canyon Country, CA
B
CSLB #759618 · Canyon Country, CA
B
CSLB #757563 · Canyon Country, CA
BC-39
CSLB #732960 · Canyon Country, CA
B
CSLB #999953 · Canyon Country, CA
C-36
CSLB #958686 · Canyon Country, CA
C-36C-54
CSLB #629914 · Canyon Country, CA
B
CSLB #1161444 · Canyon Country, CA
B
CSLB #1090091 · Canyon Country, CA
C-36
CSLB #874051 · Canyon Country, CA
B
CSLB #991661 · Canyon Country, CA
BC-5
CSLB #1077057 · Canyon Country, CA
B
CSLB #1157306 · Canyon Country, CA
B
CSLB #1122846 · Canyon Country, CA
B
CSLB #1124956 · Canyon Country, CA
B
CSLB #1111745 · Canyon Country, CA
B
CSLB #852862 · Canyon Country, CA
C-10
CSLB #1023061 · Canyon Country, CA
B
CSLB #429358 · Canyon Country, CA
BC-16
Gaps Investment Inc
CSLB #1047265 · Canyon Country, CA
BC-39C-46
CSLB #988579 · Canyon Country, CA
BC-46
CSLB #1152921 · Canyon Country, CA
C-10
CSLB #362247 · Canyon Country, CA
C-16C-36
CSLB #1035313 · Canyon Country, CA
C-10D-34
CSLB #1131277 · Canyon Country, CA
B
CSLB #904338 · Canyon Country, CA
B
CSLB #858528 · Canyon Country, CA
B
CSLB #980258 · Canyon Country, CA
B
CSLB #661668 · Canyon Country, CA
B
CSLB #598834 · Canyon Country, CA
C-36
CSLB #1157544 · Canyon Country, CA
C-10
CSLB #1114407 · Canyon Country, CA
C-10C-20
Buxton Thomas William
CSLB #784633 · Canyon Country, CA
B
CSLB #612617 · Canyon Country, CA
BC-10
CSLB #1132757 · Canyon Country, CA
B
CSLB #1045474 · Canyon Country, CA
B
CSLB #1089933 · Canyon Country, CA
C-10C-36
CSLB #1117598 · Canyon Country, CA
B
CSLB #1141306 · Canyon Country, CA
B
CSLB #686011 · Canyon Country, CA
BHAZ
CSLB #600499 · Canyon Country, CA
B
CSLB #1043698 · Canyon Country, CA
C-10