| Ace Tek Roofing Co | Song Gun Kim | — | (310) 515 6611 | Other roofers | Gardena · Los Angeles County | — | — |
| Ace Thermal Mechanical INC | Cha Nop | — | (562) 219 9731 | HVAC | Paramount · Los Angeles County | — | — |
| Ace Tier Construction INC | Chad Robert Brewer | — | (951) 704 4263 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Ace Tile And Tadelakt Co | Frank Iii Zavala | — | (209) 620 7112 | Other | Riverbank · Stanislaus County | — | — |
| Ace Top Quality Painting | Ace Top Quality Painting | — | (707) 328 2945 | Windows, patio, painters | Rohnert Park · Sonoma County | — | — |
| Ace Tree Enterprise INC | Alberto Vasquez | — | (916) 500 2933 | Tree | Roseville · Placer County | — | — |
| Ace Tree Service | Brian Edward Finigan | — | (209) 768 6226 | Tree | Sonora · Tuolumne County | — | — |
| Ace Tree Service INC | Jimenez Daniel | — | (818) 362 9071 | Tree | Sylmar · Los Angeles County | — | — |
| Ace Tree Service LLC | Dylan John Outzen | — | (916) 934 3204 | Tree | Granite Bay · Placer County | — | — |
| Ace Valla INC DBA All Valley Fence And Materials | John Bret Turley | — | (619) 279 8442 | Other | Santee · San Diego County | — | — |
| Ace Wallcovering & Painting | Ace Wallcovering & Painting | — | (310) 486 2985 | Windows, patio, painters | Redondo Beach · Los Angeles County | — | — |
| Ace Welding And Fabrication INC | Stephen Mark Wootten | — | (760) 722 2588 | Other | Oceanside · San Diego County | — | — |
| Ace Window Tinting | Ace Window Tinting | — | (760) 739 0900 | Other | Escondido · San Diego County | — | — |
| Ace Wiring Electric INC | Diego Gallegos | office@acewiringelectric.com | (415) 656 6954 | Electricians | San Francisco · San Francisco County | — | — |
| Ace Wood Design INC | Miguel Angel Acero Perez | — | (760) 805 3870 | Other | San Marcos · San Diego County | — | — |
| Ace Wrought Iron Work INC | In Chul Han | — | (310) 532 1123 | Other | Gardena · Los Angeles County | — | — |
| Ace's Electric | Asa Andrew Fausnaught | — | (559) 260 7388 | Electricians | Reedley · Fresno County | — | — |
| Ace's Garage Door Repair & Installation | Muhammad Rubin Salem | — | (510) 213 3761 | Other | Hayward · Alameda County | — | — |
| Ace's Plumbing | Ace's Plumbing | — | (925) 260 6695 | Other | Bay Point · Contra Costa County | — | — |
| Ace's Plumbing Services | Athen James Gonzales | — | (909) 736 6242 | Other | Rancho Cucamonga · San Bernardino County | — | — |
| Ace's Tile & Granite | Ace's Tile & Granite | — | (408) 691 5541 | Other | Gilroy · Santa Clara County | — | — |
| Ace-high Engineering | Jose Manuel Ortega | — | (510) 715 0585 | Other | Brentwood · Contra Costa County | — | — |
| Ace-pro Plastering INC | Jose Antonio Elias | — | (310) 439 4315 | Other | Gardena · Los Angeles County | — | — |
| Acecal | Anthony Almanza Oregel | — | (530) 366 0661 | Other | Yuba City · Sutter County | — | — |
| Aced It! Cooling & Heating | Alex James Davis | — | (951) 543 1701 | HVAC | Corona · Riverside County | — | — |
| Acemd Corporation | Gang Li | — | (805) 259 7459 | GC, remodel, ADU | Diamond Bar · Los Angeles County | — | — |
| Acento Painting & Decorating | Morales Cesar Mancilla | — | (408) 679 8642 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Acer Construction INC | Arthur Matinyan | — | (818) 531 8182 | GC, remodel, ADU | Northridge · Los Angeles County | — | — |
| Acer Contracting LLC | Bryce Thomas Martin | — | (619) 808 3231 | Other | El Cajon · San Diego County | — | — |
| Acer Fire Protection INC | Pang Chiu Chen | — | (626) 224 7800 | GC, remodel, ADU | Montclair · San Bernardino County | — | — |
| Acer Landscaping & Tree Care INC | Lopez Segura Eliazar | — | (650) 784 5357 | Windows, patio, painters | Hayward · Alameda County | — | — |
| Acer Mechanical INC | Robert Edward Hidalgo | — | (714) 624 6753 | HVAC | Yorba Linda · Orange County | — | — |
| Acer-g Engineering | Leon Shi Kuang Zhang | — | (415) 724 3580 | GC, remodel, ADU | San Francisco · San Francisco County | — | — |
| Acereto Glass INC | Manuel George De Losada | aceretoglass7@gmail.com | (760) 408 4480 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Acero Ca Building Components | Acero Ca Building Components | — | (530) 458-5800 | Windows, patio, painters | Colusa · Colusa County | — | — |
| Acero Electric | Enniko Sage Acero | — | (909) 481 4100 | Electricians | San Bernardino · San Bernardino County | — | — |
| Acero INC | Carlos Ricardo Acer Pacheco | — | (714) 526 8327 | Windows, patio, painters | Orange · Orange County | — | — |
| Acero Painting INC | Luis Alberto Acero Monroy | — | (949) 331 8038 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Aces Air | Aces Air | — | (408) 506 5631 | HVAC | San Jose · Santa Clara County | — | — |
| Aces Consortium INC | Steven Charles Casey | — | (916) 476 1664 | GC, remodel, ADU | Sacramento · Sacramento County | — | — |