| Ace Plumbing Pros | Antoine Joseph Moufarrege | — | (800) 223 7767 | Other | Woodland Hills · Los Angeles County | — | — |
| Ace Plumbing Sewer & Drain Service | Josef Troy Gerken | — | (760) 271 9077 | Other | Escondido · San Diego County | — | — |
| Ace Plumbing Water Damage INC | Francisco Adolfo Siqueiros | — | (619) 576 9208 | Restoration | San Diego · San Diego County | — | — |
| Ace Plus | Johnny Lap Hoang | — | (626) 679 5338 | HVAC | El Monte · Los Angeles County | — | — |
| Ace Pool Plastering | Ace Pool Plastering | — | (530) 313 8432 | Other | Orangevale · Sacramento County | — | — |
| Ace Pool Repair & Replaster | Alec Cameron Davis | — | (909) 577 5274 | Pool | Brea · Orange County | — | — |
| Ace Pool Service INC | Richard C Pruett | — | (925) 689 5291 | Pool | Concord · Contra Costa County | — | — |
| Ace Pools | Ace Pools | — | (760) 578 8780 | Pool | Indio · Riverside County | — | — |
| Ace Prime Builders | Asher Peretz | — | (213) 320 4232 | GC, remodel, ADU | Malibu · Los Angeles County | — | — |
| Ace Pro Builders LLC | Nathan Duy Loc Nguyen | — | (714) 369 0298 | GC, remodel, ADU | Fountain Valley · Orange County | — | — |
| Ace Property Management Inc. | Ace Property Management Inc. | — | (408) 217-2882 | Property managers | Sunnyvale · Santa Clara County | — | — |
| Ace Rain Systems INC | Joyce E Mangen | — | (760) 734 4888 | Other | San Marcos · San Diego County | — | — |
| Ace Raingutters | Ace Raingutters | — | (818) 257 4766 | Other | Sylmar · Los Angeles County | — | — |
| Ace Refinishing INC DBA Synthetic Products | Thomas Patrick Syms | — | (818) 636 3726 | Other | Leona Valley · Los Angeles County | — | — |
| Ace Refrigeration Services | Alejandro Jesus Salazar | — | (909) 275 5833 | HVAC | Colton · San Bernardino County | — | — |
| Ace Remodeling | Ace Remodeling | — | (313) 946 4500 | GC, remodel, ADU | Canoga Park · Los Angeles County | — | — |
| Ace Renovators & Retrofitting INC | Alionso Rodrigo Angel | — | (818) 471 5440 | GC, remodel, ADU | Sun Valley · Los Angeles County | — | — |
| Ace Restoration & Construction INC | Cheree Nichelle Fay | — | (714) 272 8189 | GC, remodel, ADU | Norco · Riverside County | — | — |
| Ace Rodil Heating And Air Conditioning | Arsenio B Rodil | — | (909) 996 1474 | HVAC | Diamond Bar · Los Angeles County | — | — |
| Ace Roofing & Waterproofing Systems INC | Robert James Torres | — | (831) 212 0332 | Other roofers | Hollister · San Benito County | — | — |
| Ace Roofing Company | James Yong Chom Chon | — | (415) 872 9300 | Other roofers | San Francisco · San Francisco County | — | — |
| Ace Roofing Company | Adam Craig Webb | — | (818) 209 1533 | Other roofers | Glendale · Los Angeles County | — | — |
| Ace Roofing East Bay | Jun Jeffrey | — | (415) 524 5901 | Other roofers | San Francisco · San Francisco County | — | — |
| Ace Roofing System Co | Austin Chang Han | — | (714) 900 0544 | Other roofers | La Mirada · Los Angeles County | — | — |
| Ace Roofing Systems | Jose De Jesus Olmedo | — | (310) 834 3900 | Other roofers | Torrance · Los Angeles County | — | — |
| Ace Rooter Plumbing And Drain Services | Manuel Esteban Martinez Guevara | — | (619) 392 7536 | Other | Chula Vista · San Diego County | — | — |
| Ace San Diego Roofer | Ace San Diego Roofer | buildzoomsupport@blockrenovation.com | (858) 392-8851 | Other roofers | San Diego · San Diego County | — | — |
| Ace Sandblasting Corp | Amnon Simantov | — | (323) 245 2112 | Other | Glendale · Los Angeles County | — | — |
| Ace Sevier Painting | Ace Sevier Painting | — | (909) 624 5080 | Windows, patio, painters | Claremont · Los Angeles County | — | — |
| Ace Sewer Lateral Contractor | Ace Sewer Lateral Contractor | — | (510) 258 7385 | Other | Hayward · Alameda County | — | — |
| Ace Shower Door & Glass Ca. Lic# 998322 | Ace Shower Door & Glass Ca. Lic# 998322 | — | (650) 458-3414 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Ace Sign And Design | Ace Sign And Design | — | (323) 732 1489 | Other | Los Angeles · Los Angeles County | — | — |
| Ace Stairways & Construction | Mario Christian Castro | — | (213) 709 6266 | GC, remodel, ADU | Huntington Park · Los Angeles County | — | — |
| Ace Stone Fabricators INC | Sabag Danny | — | (818) 572 8110 | Other | Woodland Hills · Los Angeles County | — | — |
| Ace Striping | Kenneth Todd Vander Linden | — | (951) 685 5508 | Other | Riverside · Riverside County | — | — |
| Ace Striping & Sealing INC | Acevedo David | — | (619) 454 7056 | Other | Chula Vista · San Diego County | — | — |
| Ace Swimming Pool Maintenance | Sung Baek Kim | — | (714) 345 5516 | Pool | Garden Grove · Orange County | — | — |
| Ace Synthetic Wall Paneling | Ace Synthetic Wall Paneling | — | (916) 613 6635 | Other | Sacramento · Sacramento County | — | — |
| Ace Systems INC | Jon Andrew Meurer | sales@acesystems.com | (510) 684 3973 | Electricians | El Cerrito · Contra Costa County | — | — |
| Ace Taping And Drywall INC | Jose Trinidad Troncoso | — | (951) 201 7825 | Other | Fontana · San Bernardino County | — | — |