| Alternative Coatings Solutions INC DBA Acs Synthetics | Angelica Ibarra | — | (951) 514 5704 | Other | Temecula · Riverside County | — | — |
| Alternative Fire Protection Services | Bryan Wayne Geer | — | (951) 245 7111 | Other | Lake Elsinore · Riverside County | — | — |
| Altruistic Construction Services | Brian William Ballinger | — | (951) 883 2944 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Altura Roofing INC | Rogelio Torres | — | (760) 485 3766 | Other roofers | Coachella · Riverside County | — | — |
| Alumacovers Of California INC | Anthony Norman Morelli | — | (626) 934 9200 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Aluminex Incorporated | Franklin Eugene Porter | — | (951) 353 1101 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Aluminum Window Systems Ca | Daniel Timothy-Gera Braunschweig | — | (951) 685 4313 | Windows, patio, painters | Mira Loma · Riverside County | — | — |
| Alvar's | Juan Carlos Vinageras | — | (209) 275 0616 | Other | Cathedral City · Riverside County | — | — |
| Alvarado Construction | Francisco Javier Alvarado | — | (714) 654 7226 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Alvarado Construction & Logistics | Angel L Alvarado | — | (714) 872 9662 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Alvarado Landscaping Company | Jose Angel Garcia Alvarado | — | (951) 807 0378 | Windows, patio, painters | Moreno Valley · Riverside County | — | — |
| Alvarado Roofing INC | Alvarado Servando | — | (951) 496 5790 | Other roofers | Norco · Riverside County | — | — |
| Alvarado Stone Slabs | Alvarado Stone Slabs | — | (951) 426 6567 | Other | Riverside · Riverside County | — | — |
| Alvarado's Masonry | Alvarado's Masonry | — | (951) 544 3481 | Other | Mira Loma · Riverside County | — | — |
| Alvarado's Painting INC | Pastrana Orlando Alvarado | — | (951) 236 9852 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Alvarado's Pools INC | Alvarado Beltran Ricardo | — | (760) 296 2064 | Pool | Indio · Riverside County | — | — |
| Alvarez Arturo | Alvarez Arturo | — | (760) 992 1319 | Pool | Cathedral City · Riverside County | — | — |
| Alvarez Construction | Jesus Adrian Alvarez | — | (323) 691 6499 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Alvarez Contracting Design Corporation | Carlos Antonio Alvarez | — | (951) 233 7295 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Alvarez Contractors INC DBA Jenaro Alvarez Lath And Plaster | Alvarez Jenaro Adame | — | (760) 200 7132 | Other | Indio · Riverside County | — | — |
| Alvarez Custom Painting | Alvarez Custom Painting | — | (760) 408 4336 | Windows, patio, painters | Cathedral City · Riverside County | — | — |
| Alvarez Grading And Paving | Alvarez Grading And Paving | — | (951) 422 8814 | Other | Perris · Riverside County | — | — |
| Alvarez Home Improvement | Javier Efrain Alvarez Pena | — | (951) 956 0652 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Alvaro Garcia Vazquez | Alvaro Garcia Vazquez | — | (951) 264 9709 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Alvaro Leon | Alvaro Leon | — | (951) 526 8574 | Other | Lake Elsinore · Riverside County | — | — |
| Alvaro Sandoval | Alvaro Sandoval | — | (951) 722 9034 | Other | Romoland · Riverside County | — | — |
| Alvear Concrete Corp | Pineda Juan Alvear | — | (951) 821 1266 | Other | Sun City · Riverside County | — | — |
| Alves Patio Designs INC | Robert Michael Alves | — | (951) 972 2000 | Other | Temecula · Riverside County | — | — |
| Always Blue Pool Service & Repair | Thomas Joseph Elias | — | (760) 485 1244 | Pool | Cathedral City · Riverside County | — | — |
| Always On-point Heating & Air Conditioning | Jermaine Turrell Baskerville | — | (323) 705 1654 | HVAC | Perris · Riverside County | — | — |
| Always There Pool Care | Always There Pool Care | — | (714) 420 0171 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Am Asphalt Systems INC DBA Parking And Highway Maintenance | Michael Tebb | — | (714) 391 7301 | Other | Corona · Riverside County | — | — |
| Am Home Improvements INC | Pakie Vincent Jr Plastino | — | (760) 272 0331 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Am Pro Painting | Brenda Antonia Aviles | — | (951) 564 9466 | Windows, patio, painters | Perris · Riverside County | — | — |
| Amador's Construction | Amador's Construction | — | (951) 283-2480 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Amador's Pool Service | Rafael Amador Jardinez | — | (760) 391 1736 | Windows, patio, painters | Cathedral City · Riverside County | — | — |
| Aman Painting | Aman Painting | — | (310) 418 2366 | Windows, patio, painters | Murrieta · Riverside County | — | — |
| Amanecer Wood Work | Jose Jesus Escamilla | — | (760) 308 7697 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Amaral Precision Painting LLC | Kristopher Kopa Amaral | amaralpaintingllc@gmail.com | (951) 317-1815 | Windows, patio, painters | Corona · Riverside County | — | — |
| Amaro Construction INC | Luis Alberto Amaro Berumen | — | (323) 557 4021 | GC, remodel, ADU | Perris · Riverside County | — | — |