| San Diego | C & D Modular Construction Llc | (858) 752 1290 | #1091101 | B | 05/04/2022 |
| San Diego | Onestop Adu | (858) 683 0030 | #1094838 | B | 08/01/2022 |
| San Diego | Crs Adu Builders Inc | (858) 788 3839 | #1124920 | B | 08/09/2024 |
| San Diego | Senko Prefab Install | (858) 667 3896 | #1126567 | B| D34 | 09/18/2024 |
| San Diego | Domo Modular Construction Company Llc | (619) 925 3330 | #1134215 | B | 03/11/2025 |
| San Diego | M Modular Builders Llc | (855) 780 6363 | #1149078 | B | 01/15/2026 |
| San Diego | Truebuild Adu | (858) 345 0305 | #770286 | B| C-8 | 10/15/1999 |
| San Diego | Prefab Granite Depot | (858) 831 9363 | #887626 | B| C54 | 11/27/2006 |
| San Jose | Modular Remodeling & Design Inc | (650) 666 9997 | #1067136 | B | 07/22/2020 |
| San Jose | Adu By Luxury Construction Inc | (818) 300 3334 | #1079619 | B | 08/13/2021 |
| San Jose | R&R Backyard Remodeling Inc | (669) 309 7011 | #1086398 | B | 01/21/2022 |
| San Jose | Bay Area Backyard Design | (408) 590 5755 | #1095227 | B| C27 | 08/10/2022 |
| San Jose | Landmark Construction & Adu | (408) 915 9235 | #1140588 | B | 07/17/2025 |
| San Jose | Pinnacle Construction And Modular Inc | (408) 963 5140 | #587516 | B | 01/31/1990 |
| Irvine | So Cal Casitas & Adus Inc | (949) 677 9757 | #1071406 | B | 11/30/2020 |
| Irvine | Adu Development | (949) 216 0686 | #1084420 | B | 12/01/2021 |
| Irvine | Pelican Adu Builders | (949) 299 2370 | #1106515 | B | 06/26/2023 |
| Irvine | Adu-Container Construction Company | (949) 302 6866 | #1147898 | B | 12/18/2025 |
| Upland | Blok Modular Constructors Inc | (888) 256 5663 | #1054345 | A| B | 06/05/2019 |
| Upland | Backyard Estates Llc | (949) 662 4884 | #1076065 | B | 05/21/2021 |
| Upland | Red Fox Adu Contractors Corp | (800) 813 1547 | #1113170 | B | 11/28/2023 |
| Upland | Adu Solutions La | (840) 229 0073 | #886840 | B | 11/07/2006 |
| Bakersfield | Backyard And Home Construction | (661) 927 6030 | #1071769 | B| C17| C36 | 12/09/2020 |
| Bakersfield | J T S Modular Inc | (661) 835 4270 | #798919 | B | 08/29/2001 |
| Bakersfield | Kern Modular Space | (661) 201 7703 | #923130 | B| C47 | 10/02/2008 |
| Citrus Heights | Cozy Adu | (916) 599 5952 | #1072570 | B | 01/07/2021 |
| Citrus Heights | Golden State Adus | (916) 225 7528 | #1125656 | B | 08/27/2024 |
| Citrus Heights | Barth Modular Construction Inc | (916) 965 6555 | #909803 | B| C47 | 01/30/2008 |
| Long Beach | Adu Construction Contracting | (877) 969 2272 | #1041789 | B | 07/12/2018 |
| Long Beach | Adu Building Company | (323) 484 2433 | #1098802 | B | 11/16/2022 |
| Long Beach | The Adu Builder Inc | (714) 390 7237 | #1144893 | B | 10/13/2025 |
| Los Angeles | Eazy Adu | (818) 850 3511 | #1057881 | B | 09/09/2019 |
| Los Angeles | Otto Adu | (323) 892 8619 | #1081287 | B | 09/16/2021 |
| Los Angeles | Builders Modular Depot Inc | (213) 447 7797 | #1133865 | A| B| C51 | 03/04/2025 |
| Sacramento | Adu Builders California | (916) 277 8760 | #1018349 | B | 09/16/2016 |
| Sacramento | Redwood Adu Llc | (916) 619 9585 | #1098046 | B | 10/24/2022 |
| Sacramento | L & B Modular Inc | (916) 349 1814 | #835486 | B| C47 | 04/06/2004 |
| Atwater | Modular Solutions Inc | (209) 862 2005 | #826531 | B | 10/23/2003 |
| Atwater | Global Modular Inc | (209) 676 8029 | #837357 | B | 04/30/2004 |
| Chino | Las Casita Inc | (626) 566 5266 | #1099219 | B | 12/01/2022 |
| Chino | The Adu Pro Inc | (800) 929 9812 | #1128679 | B | 11/04/2024 |
| Encino | Adu Builder And Construction Inc | (310) 466 8660 | #1122843 | B | 06/25/2024 |
| Encino | Bella Adu | (310) 947 5822 | #599288 | B | 07/27/1990 |
| Fresno | Pocket Home Professionals | (550) 582 3871 | #1078820 | B | 07/26/2021 |
| Fresno | Central Valley Adus Llc | (559) 430 9884 | #1138713 | B | 06/11/2025 |
| Fullerton | Apex Adu | (562) 888 1201 | #1020301 | B | 11/03/2016 |
| Fullerton | Custom A D U Builder | (714) 488 3160 | #1101360 | B | 02/10/2023 |
| Lodi | Meehleis Modular Buildings Inc | (209) 334 4637 | #473488 | B | 05/14/1985 |
| Lodi | Backyard Builders | (209) 327 7288 | #612819 | B| C27| D28 | 02/14/1991 |
| Newport Beach | Adu Factory Inc | (949) 929 1839 | #1084365 | B | 12/01/2021 |
| Newport Beach | Adu Me Inc | (949) 251 9025 | #1129298 | B | 11/19/2024 |
| Norco | Adu Custom Home Builders Llc | (951) 264 7095 | #1139554 | B| C47 | 06/27/2025 |
| Norco | Preferred Modular Structures Inc | (951) 735 2332 | #791175 | B| C54 | 02/09/2001 |
| Ontario | Allstar Adu & General Builder | (909) 781 9504 | #1009628 | B| C54 | 12/10/2015 |
| Ontario | Prefab Granite & Tile Depot Inc | (909) 483 1473 | #975056 | B| C54 | 07/19/2012 |
| Santa Rosa | North Bay Adu & Additions | (707) 543 1716 | #1132251 | B | 01/29/2025 |
| Santa Rosa | J L Modular Inc | (707) 527 5788 | #835496 | B | 04/06/2004 |
| Vista | Adu Builders Pros Coalition Corp | (760) 712 7460 | #1140045 | B | 07/08/2025 |
| Vista | Adu Builder Heroes | (541) 530 1898 | #1142131 | B | 08/18/2025 |
| Agoura Hills | Thousand Oaks Adu Builders | (310) 386 7314 | #1101931 | B | 02/28/2023 |
| Aliso Viejo | Rad Modular Construction | (949) 339 8510 | #1120497 | B| C10 | 05/08/2024 |
| Anaheim | Vision Adu Llc | (866) 668 4264 | #1115842 | B | 01/31/2024 |
| Arcadia | Adus Master Inc | (310) 595 8482 | #1091203 | B | 05/06/2022 |
| Bonita | Atom Modular | (619) 200 9580 | #964715 | B | 08/22/2011 |
| Brea | Adu Designers & Builders | (949) 279 7410 | #926786 | B | 12/31/2008 |
| Burbank | La Home Adu | (310) 896 5665 | #1082183 | B | 10/07/2021 |
| Byron | Ray'S Mobile Modular Service | (510) 331 2952 | #555444 | B | 01/26/1989 |
| Camarillo | Hive Adu Llc | (805) 383 0854 | #1146801 | B | 11/24/2025 |
| Carlsbad | Zoom Adu Inc | (619) 927 4774 | #1145664 | B | 10/29/2025 |
| Carmichael | Oakland Tiny Home & Adu | (510) 821 2319 | #1005011 | B | 06/29/2015 |
| Carson | The Adu Guys.Com Inc | (310) 984 9398 | #1071442 | B | 12/01/2020 |
| Ceres | Golden State Adu Works Inc | (209) 985 3449 | #1119120 | A| B| C10 | 04/09/2024 |
| Clayton | Adu Crew Llc | (925) 979 5450 | #1139240 | B | 06/20/2025 |
| Colton | Aguilar Modular | (909) 994 5535 | #867629 | B| C47 | 11/15/2005 |
| Corona | Unified Modular Corporation | (833) 425 2777 | #1070001 | B | 10/19/2020 |
| Costa Mesa | Modular Resources International Corp | (714) 545 7700 | #684590 | B | 02/25/1994 |
| Covina | Adu Company The | (626) 251 5202 | #1118354 | B | 03/21/2024 |
| Discovery Bay | Custom Modular Structures | (925) 413 8041 | #560604 | B | 03/14/1989 |
| El Cajon | Modular Transport Specialists | (619) 977 1251 | #717225 | B| C47 | 01/09/1996 |
| Encinitas | Modular Built Llc | (760) 815 2909 | #1147876 | B | 12/17/2025 |
| Fairfield | California Construction And Adu'S Inc | (925) 984 4815 | #1106293 | B | 06/21/2023 |
| Folsom | Sacramento Valley Adu Builders | (916) 801 5983 | #750817 | B | 06/18/1998 |
| Fontana | Disabled Veteran Modular Buildings Inc | (951) 795 5920 | #1088718 | B | 03/17/2022 |
| Galt | Berger Modular | (209) 329 9368 | #1025817 | B| C47 | 04/14/2017 |
| Garden Grove | Advanced Modular Construction | (714) 225 8879 | #964478 | B | 08/12/2011 |
| Glendale | Adu Rc Builders | (818) 400 8218 | #1080967 | B | 09/09/2021 |
| Granada Hills | Westlake Adu Llc | (805) 657 9589 | #1119001 | B | 04/05/2024 |
| Granite Bay | Romana Modular Inc | (916) 825 0094 | #1056772 | B | 08/07/2019 |
| Hayward | Shed Shop The | (510) 791 7433 | #1062810 | B| C10 | 01/29/2020 |
| Hemet | U S Modular Inc | (951) 679 9907 | #943047 | B | 02/01/2010 |
| Hesperia | Modular Tech And Site Services Inc | (951) 415 0218 | #1008952 | B | 11/13/2015 |
| Huntington Beach | Custom Modular Services Corporation | (714) 964 6834 | #570805 | B | 06/14/1989 |
| Inglewood | Nexgen Construction An Adu Specialist | (424) 307 5454 | #1138105 | B | 05/28/2025 |
| La Mesa | D R V Modular Contractors Inc | (619) 670 9818 | #680131 | B| C47 | 11/08/1993 |
| Laguna Beach | Coastal Casita Inc | (626) 665 8591 | #1120486 | B | 05/08/2024 |
| Lathrop | Bay Modular Inc | (209) 214 6845 | #1112074 | B | 10/30/2023 |
| Los Altos | Uda Adu | (310) 616 6697 | #1146840 | B | 11/25/2025 |
| Manteca | American Modular Systems Inc | (209) 825 1921 | #661154 | B | 12/15/1992 |
| Moorpark | Epic Adu'S And Construction | (805) 432 9143 | #1146132 | ASB| B| C36 | 11/10/2025 |
| Mountain View | Xoxo Kitchen & Bath - Golden State Adu | (650) 789 1731 | #1039715 | B | 05/23/2018 |
| Newcastle | Westlake Adu Construction | (916) 202 6969 | #1139591 | B | 06/27/2025 |
| North Highlands | A+ Construction & Remodeling Adu Builders | (916) 970 0047 | #1007869 | B | 10/02/2015 |
| North Hills | Art Adu Construction | (310) 430 6410 | #1122109 | B | 06/13/2024 |
| North Hollywood | Solo Adus Inc | (818) 564 5835 | #1133187 | B | 02/14/2025 |
| Northridge | Cali Adu Construction | (323) 244 8523 | #1136594 | B| C10 | 04/25/2025 |
| Oakdale | Adu Coach Construction | (260) 229 0835 | #1136560 | B | 04/24/2025 |
| Oakley | Detailed Modular Construction Inc | | #1135407 | B | 04/04/2025 |
| Oceanside | Adu O-Side | (760) 936 2223 | #1129042 | B | 11/13/2024 |
| Orange | Modern Homes & Adu'S | (760) 403 1215 | #1129825 | A| B | 12/03/2024 |
| Orangevale | Haus Adu Llc | (916) 407 5550 | #1153817 | B | 04/20/2026 |
| Orcutt | Bundle Adu Inc | (805) 314 7445 | #1121157 | B | 05/21/2024 |
| Oroville | The Backyard Artist | (714) 425 4897 | #1141811 | A| B | 08/11/2025 |
| Palo Alto | Casita Development Company Inc | (650) 600 9050 | #1134549 | B | 03/18/2025 |
| Paso Robles | Yardnest Adu | (805) 423 1816 | #1114573 | B | 01/03/2024 |
| Perris | Silver Creek Modular Llc | (951) 943 5393 | #1106686 | B | 06/28/2023 |
| Placentia | Revive Modular Llc | (310) 623 0362 | #1139117 | B | 06/18/2025 |
| Pomona | Adu & Foundation Repair | (626) 483 3508 | #1087389 | B | 02/16/2022 |
| Poway | Modular Building Concepts Inc | (858) 679 1185 | #945244 | B | 04/06/2010 |
| Rancho Santa Margarita | Adu Installer | (949) 342 4482 | #1081678 | B | 09/24/2021 |
| Reseda | Adu Construction Inc | (818) 401 8918 | #1139804 | B | 07/02/2025 |
| Riverside | A2Z Adus | (951) 316 2159 | #1114121 | B | 12/19/2023 |
| Rocklin | Casita Construction | (209) 430 5659 | #1123091 | B | 07/01/2024 |
| Roseville | U S A Modular Inc | (574) 825 0484 | #866021 | B | 10/18/2005 |
| San Bruno | Basic Modular Facilities | (415) 699 9124 | #509052 | B | 04/15/1987 |
| San Francisco | Norcal Adu Builders Llc | (916) 572 8310 | #1104145 | B | 05/02/2023 |
| San Leandro | A-1 Modular Inc | (510) 999 7721 | #1008490 | B| C10| D34 | 10/27/2015 |
| San Mateo | Adu San Mateo Llc | (510) 325 8494 | #1145539 | B | 10/27/2025 |
| Santa Ana | Totl Modular Construction Inc | (714) 425 5067 | #989148 | B | 12/14/2013 |
| Santa Clara | A Mayberry Adu | (408) 294 7775 | #890185 | A| B| C20| C36 | 01/26/2007 |
| Santa Clarita | Perfect Adu & Remodeling Inc | (866) 312 1382 | #1123657 | B | 07/16/2024 |
| Santa Monica | 24 Prefab Llc | (310) 243 6967 | #862385 | B | 08/06/2005 |
| Seal Beach | Adu West Coast | (714) 794 9167 | #1064076 | B | 03/09/2020 |
| Sherman Oaks | Apex Adu Builders | (818) 522 2929 | #1101305 | B | 02/08/2023 |
| Spreckels | Premier Adu Inc | (831) 296 4458 | #1094680 | B | 07/28/2022 |
| Sylmar | Btl Modular Construction Inc | (818) 425 8631 | #1072829 | B | 01/19/2021 |
| Tarzana | Adu Concepts | (818) 962 6900 | #1018294 | A| B | 09/15/2016 |
| Tustin | Adu-Builds Llc | (949) 241 9044 | #1150636 | B | 02/18/2026 |
| Vacaville | Legacy Modular Buildings Inc | (707) 479 3400 | #1094256 | B | 07/21/2022 |
| Valencia | Adu Homes Construction | (818) 355 2343 | #1151305 | B | 03/03/2026 |
| Vernon | Modular And Data Services Corp | (323) 819 2000 | #1013336 | B| D34 | 04/27/2016 |
| Victorville | Accelerated Modular Concepts Inc | (760) 245 4200 | #700563 | B | 12/21/1994 |
| Villa Park | Mobile Modular Construction Inc | (714) 299 9000 | #680893 | B | 11/24/1993 |
| West Hills | Adu 4 You | (877) 622 4001 | #1143833 | B | 09/19/2025 |
| Yorba Linda | Impact Modular Builders | (949) 885 6916 | #1099163 | B| C16 | 11/30/2022 |