Every contractor below holds an active California license with an office of record in Beverly 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
Diamond Financial Management Inc
CSLB #1093438 · Beverly Hills, CA
B
CSLB #407592 · Beverly Hills, CA
BC-10
CSLB #743533 · Beverly Hills, CA
B
CSLB #1068191 · Beverly Hills, CA
B
CSLB #765247 · Beverly Hills, CA
B
CSLB #406818 · Beverly Hills, CA
B
CSLB #913881 · Beverly Hills, CA
B
CSLB #975276 · Beverly Hills, CA
B
Gold Coast Design Build Ltd
CSLB #1061170 · Beverly Hills, CA
B
CSLB #954214 · Beverly Hills, CA
B
CSLB #1009835 · Beverly Hills, CA
BC-10C-36
CSLB #974224 · Beverly Hills, CA
B
Novaquore LLC
CSLB #1088598 · Beverly Hills, CA
C-10
CSLB #1158489 · Beverly Hills, CA
B
CSLB #955765 · Beverly Hills, CA
B
CSLB #1105248 · Beverly Hills, CA
B
CSLB #1136802 · Beverly Hills, CA
B
CSLB #868244 · Beverly Hills, CA
B
CSLB #747745 · Beverly Hills, CA
C-36
CSLB #634126 · Beverly Hills, CA
B
CSLB #922970 · Beverly Hills, CA
B
CSLB #766264 · Beverly Hills, CA
B
CSLB #1053296 · Beverly Hills, CA
B
CSLB #730265 · Beverly Hills, CA
B
CSLB #868055 · Beverly Hills, CA
B
CSLB #1050390 · Beverly Hills, CA
C-10
CSLB #1149037 · Beverly Hills, CA
B
Horizon Plus Inc
CSLB #874664 · Beverly Hills, CA
B
Horizon Design International LLC
CSLB #1007877 · Beverly Hills, CA
ABC-13C-23C-51
CSLB #821898 · Beverly Hills, CA
B
CSLB #910131 · Beverly Hills, CA
B
CSLB #721430 · Beverly Hills, CA
B
CSLB #940685 · Beverly Hills, CA
B
CSLB #980658 · Beverly Hills, CA
B
CSLB #1088261 · Beverly Hills, CA
B
CSLB #784351 · Beverly Hills, CA
BC-10
CSLB #515647 · Beverly Hills, CA
B
CSLB #536794 · Beverly Hills, CA
C-10
CSLB #967346 · Beverly Hills, CA
B
CSLB #244059 · Beverly Hills, CA
B
CSLB #1112001 · Beverly Hills, CA
B
CSLB #1128191 · Beverly Hills, CA
B
CSLB #1119377 · Beverly Hills, CA
B
CSLB #1050982 · Beverly Hills, CA
B
CSLB #721274 · Beverly Hills, CA
BC-27C-53
CSLB #1031495 · Beverly Hills, CA
B
CSLB #904005 · Beverly Hills, CA
B
CSLB #1038644 · Beverly Hills, CA
B
CSLB #932319 · Beverly Hills, CA
B
CSLB #730355 · Beverly Hills, CA
C-10