| 5 Star Plumbing Heating & Air INC | Gabriel Gilbert Reyes | — | (951) 392 2319 | HVAC | Hemet · Riverside County | — | — |
| 5 Star Remodeling INC | Alfredo Barcenas | — | (858) 790 8788 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| 5 Star Roofing | John Harry Davido | — | (714) 791 6369 | Other roofers | Corona · Riverside County | — | — |
| 5 Star Roofing INC | Jose Manuel Jauregui | — | (619) 210 3657 | Other roofers | Murrieta · Riverside County | — | — |
| 525 Automation INC | Nelson Torres | — | (909) 908 2449 | Other | Homeland · Riverside County | — | — |
| 646 Construction Services | Fernando Mazkiaran Martinez | — | (951) 545 5390 | GC, remodel, ADU | Corona · Riverside County | — | — |
| 6C Development INC | Charles Alexander Ebenhack | — | (951) 858 4870 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| 7 Cs Design INC | Curtis Alan Secor | — | (760) 341 1151 | Other | Palm Desert · Riverside County | — | — |
| 7 Palms Plumbing INC | Miguel Angel Flores Verdugo | — | (760) 771 7608 | Other | Thermal · Riverside County | — | — |
| 7 West Painting INC | Joshua Kane Lucas | — | (714) 717 0266 | Windows, patio, painters | Calimesa · Riverside County | — | — |
| 72 Degrees HVAC INC | Samaniego Alex | — | (833) 332 7272 | HVAC | Menifee · Riverside County | — | — |
| 760 Prime Construction LLC | Michael R Ramirez | — | (760) 619 1191 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| 9 23 Paint | 9 23 Paint | — | (760) 808 6641 | Windows, patio, painters | Desert Hot Springs · Riverside County | — | — |
| 9-dam Backflow Testing | 9-dam Backflow Testing | — | (951) 452 8023 | Other | Riverside · Riverside County | — | — |
| 911 Restoration Of Temecula Valley | Mark Todd Peel | — | (951) 236 9558 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| 951 Custom Pools INC | Luis Enriquez Medina | — | (951) 334 1983 | Pool | Perris · Riverside County | — | — |
| A & A Fence Co INC | Hilario Aguilera | — | (951) 538 9424 | Other | Beaumont · Riverside County | — | — |
| A & A Flooring Design INC | Luis Alberto Sanchez Huizar | — | (714) 391 8758 | Other | Mira Loma · Riverside County | — | — |
| A & A Plumbing And Rooter Service | August Ernest Culver | — | (909) 984 5343 | Other | Riverside · Riverside County | — | — |
| A & B Creations Pool And Spa Remodeling INC | Perez Romero David | — | (714) 313 4551 | Pool | Corona · Riverside County | — | — |
| A & B General Builders LLC | Ruiz-rosales Alfonso | — | (951) 538 1130 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| A & C Electrical | Kermit Reginald Perry | — | (909) 917 2551 | Electricians | Mira Loma · Riverside County | — | — |
| A & C Heating And Air Conditioning | Perez Alex | — | (714) 317 2691 | HVAC | Corona · Riverside County | — | — |
| A & C Incorporated DBA One Call Heating And Cooling | Eduardo T Sanchez | — | (909) 422 9965 | HVAC | Riverside · Riverside County | — | — |
| A & C Window And Door Specialist INC | Alexander Campos Ballesteros | — | (951) 252 6077 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| A & E Fiber Optic Services | Flores Ranfery | — | (909) 772 2247 | Other | Beaumont · Riverside County | — | — |
| A & E Glass Repair INC | Adan Lisea Cardenas | info@aeglassrepair.com | (951) 471 4818 | Windows, patio, painters | Lake Elsinore · Riverside County | — | — |
| A & E Paving | Carlos Antonio Andres | — | (714) 798 0963 | Other | Moreno Valley · Riverside County | — | — |
| A & F Contractors | Walfred Leonardo Orizabal | — | (323) 829 8734 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| A & G Heating And Air Conditioning_systems | Victoriano Angel | — | (909) 936 6466 | HVAC | Hemet · Riverside County | — | — |
| A & G Interior Drywall Services LLC | Gerardo Jr Alfaro | — | (310) 505 9821 | Other | Jurupa Valley · Riverside County | — | — |
| A & G Style Works Painting | Alex Martin Gerba | — | (619) 303 2092 | GC, remodel, ADU | Indio · Riverside County | — | — |
| A & J Concrete Cutting & Breaking | Jose Craig Bugarin | — | (760) 535 3161 | Other | Temecula · Riverside County | — | — |
| A & J Environmental Services INC | Christopher Allen Edwards | — | (909) 597 9702 | Other | Riverside · Riverside County | — | — |
| A & J Heating And Air | Joe Manuel Cortez | — | (951) 350 2498 | HVAC | Riverside · Riverside County | — | — |
| A & J Plumbing | A & J Plumbing | — | (760) 413 6391 | Other | Cathedral City · Riverside County | — | — |
| A & L 360 General Construction INC | Luis Gerardo Rocha Perez | — | (909) 242 6869 | GC, remodel, ADU | Beaumont · Riverside County | — | — |
| A & L Landscape And Gardening Ser | Lievanos Austreberto | — | (760) 774 5506 | Windows, patio, painters | Desert Hot Springs · Riverside County | — | — |
| A & M Plumbing Services | Michael John Herbst | — | (951) 929 2128 | Other | Hemet · Riverside County | — | — |
| A & N Pools INC | James Kalwin Norris | — | (760) 340 2404 | Pool | Palm Desert · Riverside County | — | — |