| Add Ventures | Add Ventures | — | (949) 645 7089 | GC, remodel, ADU | Newport Beach · Orange County | — | — |
| Addamo Development | Addamo Development | — | (760) 579 8654 | GC, remodel, ADU | Carlsbad · San Diego County | — | — |
| Addams Family Construction Corporation | Paul Stephen Adams | — | (310) 529 5375 | Electricians | Chico · Butte County | — | — |
| Addax Electric INC | Gary Colby Gandy | — | (619) 749 8360 | Electricians | El Cajon · San Diego County | — | — |
| Added Dimensions Incorporated | Paul Benett Wayne | — | (415) 442 5830 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Addessi Brothers INC | Addessi Mario | — | (562) 348 9480 | GC, remodel, ADU | Downey · Los Angeles County | — | — |
| Addington Air INC | Jason Alex Addington | addingtonairinc@gmail.com | (209) 876 1724 | HVAC | Patterson · Stanislaus County | — | — |
| Addington INC | David Lynn Addington | firstname@addington.com | (760) 408 7528 | GC, remodel, ADU | Bermuda Dunes · Riverside County | — | — |
| Addington Tile Works | Addington Tile Works | — | (530) 312 8684 | Other | Grass Valley · Nevada County | — | — |
| Addink Turf Farms INC | John William Addink | — | (951) 687 7581 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Addis Construction Co | Tewolde Berhan Berhane | — | (209) 743 1205 | GC, remodel, ADU | Sonora · Tuolumne County | — | — |
| Addison - Miller INC | Cara Maria Di Masi | — | (310) 663 1683 | GC, remodel, ADU | Orange · Orange County | — | — |
| Addison Communications LLC | Steve Earl Vanmeetren | — | (925) 453 1747 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Addison Construction | Zachary Quiroz Addison | — | (619) 992 0019 | GC, remodel, ADU | San Diego · San Diego County | — | — |
| Addison Electric | Stephen Edward Addison | — | (408) 600 4190 | Electricians | San Jose · Santa Clara County | — | — |
| Addison James Incorporated | Earl John Materne | — | (559) 347 9555 | Other | Clovis · Fresno County | — | — |
| Addison Landscape And Maintenance INC | Tyler Robinson Addison | — | (805) 473 0913 | Windows, patio, painters | Arroyo Grande · San Luis Obispo County | — | — |
| Addison Pools | Addison Pools | — | (818) 205 9255 | GC, remodel, ADU | Valley Village · Los Angeles County | — | — |
| Addison Pools INC | Drake Addison Woods | — | (818) 205 9255 | GC, remodel, ADU | Valley Village · Los Angeles County | — | — |
| Addison Sheet Metal INC | Sean Adam Kirkwood | info@addisonsheetmetal.com | (760) 438 1755 | Other | Carlsbad · San Diego County | — | — |
| Addison Waters INC DBA Addison Pool Waters | Drake Addison Woods | — | (818) 205 9255 | Pool | Valley Village · Los Angeles County | — | — |
| Addisons Builders | Addisons Builders | — | (559) 246 7123 | GC, remodel, ADU | Squaw Valley · Fresno County | — | — |
| Addition Building & Design INC | Michael Edward Ross | — | (310) 617 2722 | GC, remodel, ADU | Sherman Oaks · Los Angeles County | — | — |
| Additive Construction | Babak Zareiyan | — | (213) 880 9105 | GC, remodel, ADU | Sherman Oaks · Los Angeles County | — | — |
| Addlife | Lorie Lee Townsend | hr@addlife.com | (650) 556 9430 | Windows, patio, painters | Sunnyvale · Santa Clara County | — | — |
| Address Builders INC | Sang Eun Ji | — | (310) 940 3323 | GC, remodel, ADU | Los Angeles · Los Angeles County | — | — |
| Addvance Electric | Stefan Isfan Socaci | — | (657) 825 2600 | Electricians | Anaheim · Orange County | — | — |
| Ade Agbalaya | Ade Agbalaya | — | (818) 209 5449 | GC, remodel, ADU | Burbank · Los Angeles County | — | — |
| Ade Deign & Build INC | Yervand Armen Grigorian | — | (818) 632 9887 | GC, remodel, ADU | Tujunga · Los Angeles County | — | — |
| Aded Tile | Aded Tile | — | (909) 557 5785 | Other | Yucaipa · San Bernardino County | — | — |
| Adee Construction | Chen Chun Yen | — | (626) 384 8881 | GC, remodel, ADU | Los Alamitos · Orange County | — | — |
| Adeedo | Luke Irwin Hermann | info@adeedo.com | (916) 844 4750 | HVAC | Winters · Yolo County | — | — |
| Adel Alami | Adel Alami | — | (925) 209 1919 | GC, remodel, ADU | Pleasanton · Alameda County | — | — |
| Adel Electric | Ghafari Adel | — | (626) 701 0861 | Electricians | Monterey Park · Los Angeles County | — | — |
| Adel Ghaly | Adel Ghaly | — | (310) 482 8481 | Electricians | Reseda · Los Angeles County | — | — |
| Adel Ibrahim | Adel Ibrahim | — | (626) 652 5019 | Other | Lake Elsinore · Riverside County | — | — |
| Adel M Gadalla | Adel M Gadalla | — | (562) 567 6063 | HVAC | Corona · Riverside County | — | — |
| Adelante Grading LLC | Jesus Escobar Aguirre | — | (951) 756 4466 | Other | Perris · Riverside County | — | — |
| Adelbai Electric | John Scott Adelba Bruce | — | (408) 674 2204 | Electricians | North Highlands · Sacramento County | — | — |
| Adele Construction INC | Frattone Paul | — | (714) 821 0091 | Other roofers | Rancho Santa Margarita · Orange County | — | — |