Every contractor below holds an active California license with an office of record in Granada Hills, 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
Cal Fire Protection And Plumbing
CSLB #1132529 · Granada Hills, CA
C-16C-36
CSLB #1127810 · Granada Hills, CA
C-10
CSLB #468724 · Granada Hills, CA
C-36
CSLB #1095077 · Granada Hills, CA
C-5
CSLB #1090064 · Granada Hills, CA
C-36
CSLB #976255 · Granada Hills, CA
C-10
CSLB #960351 · Granada Hills, CA
C-36
CSLB #733105 · Granada Hills, CA
C-10
CSLB #1080572 · Granada Hills, CA
B
CSLB #660987 · Granada Hills, CA
B
CSLB #871449 · Granada Hills, CA
BC-10
CSLB #1064691 · Granada Hills, CA
BC-10
CSLB #653077 · Granada Hills, CA
BC-10
CSLB #1087320 · Granada Hills, CA
B
CSLB #1046863 · Granada Hills, CA
C-10
CSLB #851048 · Granada Hills, CA
B
Elm Tree Inc
CSLB #1130590 · Granada Hills, CA
BC-10
CSLB #1161891 · Granada Hills, CA
B
CSLB #1029208 · Granada Hills, CA
B
CSLB #1137802 · Granada Hills, CA
C-10
CSLB #1063931 · Granada Hills, CA
ABC-53
CSLB #765150 · Granada Hills, CA
BC-39
CSLB #343762 · Granada Hills, CA
BC-53
CSLB #541408 · Granada Hills, CA
B
CSLB #1057316 · Granada Hills, CA
C-10
CSLB #1126096 · Granada Hills, CA
C-10
CSLB #1004826 · Granada Hills, CA
C-36
CSLB #1086230 · Granada Hills, CA
C-36
CSLB #619209 · Granada Hills, CA
C-10
CSLB #1080248 · Granada Hills, CA
B
CSLB #1084759 · Granada Hills, CA
C-10
Maze William L JR
CSLB #480111 · Granada Hills, CA
BC-15
CSLB #288077 · Granada Hills, CA
B
CSLB #939678 · Granada Hills, CA
BC-45
CSLB #636811 · Granada Hills, CA
C-10
CSLB #1121721 · Granada Hills, CA
A
CSLB #1127368 · Granada Hills, CA
B
Miksar Inc
CSLB #937871 · Granada Hills, CA
C-10
CSLB #557654 · Granada Hills, CA
C-36
CSLB #1088993 · Granada Hills, CA
B
CSLB #984739 · Granada Hills, CA
BC-10C-46
CSLB #1055195 · Granada Hills, CA
B
CSLB #934517 · Granada Hills, CA
C-10
CSLB #1093193 · Granada Hills, CA
B
CSLB #1126851 · Granada Hills, CA
AB
CSLB #656037 · Granada Hills, CA
C-10
CSLB #793517 · Granada Hills, CA
B
CSLB #813942 · Granada Hills, CA
B
CSLB #1052971 · Granada Hills, CA
C-36
CSLB #1123129 · Granada Hills, CA
C-36