| All Signs Plus | All Signs Plus | — | (951) 733 7769 | Other | Riverside · Riverside County | — | — |
| All Solutions Plumbing LLC | Jose Antonio Oregel Zamora | — | (626) 626 0335 | Other | Perris · Riverside County | — | — |
| All Source Construction INC | Raymond Paul Moniz | estimating@allsourceconstruction.com | (951) 764 9314 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| All Source Electric | Larry Subia Domingo | — | (951) 609 5230 | Electricians | Menifee · Riverside County | — | — |
| All Spark-lin | De Lin Silvia Rios | — | (951) 373 9941 | Other | Riverside · Riverside County | — | — |
| All Star Acoustics | All Star Acoustics | — | (714) 955 9434 | GC, remodel, ADU | Beaumont · Riverside County | — | — |
| All Star American Plumbing | Larry Joseph Gomez | — | (951) 906 8005 | Other | Riverside · Riverside County | — | — |
| All Star Caulking And Waterproofing | All Star Caulking And Waterproofing | — | (714) 348 7769 | Other | Norco · Riverside County | — | — |
| All Star Electric | Ricky Jr Miranda | — | (951) 500 9995 | Electricians | Riverside · Riverside County | — | — |
| All Star Mechanical Heating & Cooling | Chavez Nazario Jimenez | — | (951) 300 7665 | HVAC | Riverside · Riverside County | — | — |
| All Star Painting | All Star Painting | — | (951) 278 9835 | Windows, patio, painters | Corona · Riverside County | — | — |
| All Star Painting & Decorating INC | Denis Josue Bautista | — | (213) 399 7837 | Windows, patio, painters | Riverside · Riverside County | — | — |
| All Star Plastering | All Star Plastering | — | (951) 595 2875 | Other | Murrieta · Riverside County | — | — |
| All Star Plumbing | All Star Plumbing | — | (951) 675 5200 | Other | Norco · Riverside County | — | — |
| All Star Plumbing | All Star Plumbing | — | (951) 271 2094 | Other | Norco · Riverside County | — | — |
| All Star Raingutters | David Clifford Wade | — | (714) 493 9999 | Other | Corona · Riverside County | — | — |
| All Star Restoration INC | Eugene Benjamin Archibek | contact@allstarrestoration.com | (951) 218 5394 | GC, remodel, ADU | Corona · Riverside County | — | — |
| All Star Services Cooling & Heating INC | Vargas Federico Gonzalez | — | (760) 541 1215 | HVAC | Indio · Riverside County | — | — |
| All Star Water Heaters INC | John Kevin Motosicky | — | (951) 301 0067 | Other | Menifee · Riverside County | — | — |
| All Stars Building Innovations INC | Aguilar Luis | — | (760) 449 3900 | GC, remodel, ADU | Cathedral City · Riverside County | — | — |
| All State Restoration INC | Rivera Jesus | — | (760) 844 9087 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| All Superior Construction | Victor Manuel Serrato | — | (951) 544 5059 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| All Surface Pros INC | Matthew John Lindquist | — | (951) 634 0056 | GC, remodel, ADU | Perris · Riverside County | — | — |
| All Temperature Air INC | Adrian J Torres | — | (951) 789 5560 | HVAC | Moreno Valley · Riverside County | — | — |
| All Terrain Landscaping | All Terrain Landscaping | cesarallterrain@gmail.com | (954) 565-6453 | Windows, patio, painters | Perris · Riverside County | — | — |
| All Things New Concrete | Daniel Thomas De Los Reyes | — | (951) 265 6830 | Other | Temecula · Riverside County | — | — |
| All Trades General Construction | Michael Gregorio Urbina | — | (951) 236 8178 | GC, remodel, ADU | Cherry Valley · Riverside County | — | — |
| All True Woodworks | All True Woodworks | — | (951) 834 2580 | Other | Winchester · Riverside County | — | — |
| All Type Hardwood Floors | All Type Hardwood Floors | — | (909) 579 7194 | Other | Eastvale · Riverside County | — | — |
| All Valley Construction | James Martin Bonesteel | — | (760) 774 5786 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| All Valley Construction INC | Javier Sarmiento Moreno | — | (760) 272 5081 | GC, remodel, ADU | Palm Springs · Riverside County | — | — |
| All Valley Drywall | All Valley Drywall | — | (760) 574 3562 | Windows, patio, painters | Indio · Riverside County | — | — |
| All Valley Garage Doors | All Valley Garage Doors | — | (760) 265 4130 | Other | Cathedral City · Riverside County | — | — |
| All Valley Remodels | Jesse Rojo Santos | — | (760) 863 6737 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| All Venture Glass | Barrett Manthey | info@allventureglass.com | (951) 925 5654 | Windows, patio, painters | Hemet · Riverside County | — | — |
| All Venture Glass Contracting INC | Ernest Calvin Scott | — | (951) 663 0871 | Windows, patio, painters | Hemet · Riverside County | — | — |
| All Wall INC DBA All-wall Drywall Interiors | Miranda Saul | — | (760) 600 5108 | GC, remodel, ADU | Indio · Riverside County | — | — |
| All Weather Sheet Metal INC | Cory Ellis Reim | — | (951) 634 3697 | Other | Winchester · Riverside County | — | — |
| All-american Flood Restoration | All-american Flood Restoration | — | (800) 492 0205 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| All-nu Restoration | Juan Manuel Martinez-Coria | — | (909) 533 7302 | HVAC | Calimesa · Riverside County | — | — |