| Gama Interlocking Pavers INC | De Leon Gonzalez Gabriel | — | (951) 623 0192 | Other | Moreno Valley · Riverside County | — | — |
| Gama Quality Painting INC | Iker Lexahi Gama Sotelo | — | (760) 822 9985 | Windows, patio, painters | Murrieta · Riverside County | — | — |
| Gamboa's Drywall | Gamboa's Drywall | — | (760) 972 0532 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Gamez Construction | Gamez Carlos | — | (951) 219 0853 | Other | Lake Elsinore · Riverside County | — | — |
| Gamma Electrical Services | Alfredo Jimenez Montes | — | (760) 541 1674 | Electricians | Coachella · Riverside County | — | — |
| Gammaview Electric | John Raymond Simmons | — | (310) 879 3914 | Electricians | Riverside · Riverside County | — | — |
| Ganci Construction | John James Ganci | — | (714) 747 4744 | GC, remodel, ADU | Menifee · Riverside County | — | — |
| Gandzjuk Electric Incorporated | Jacob Alexander Gandzjuk | — | (951) 393 1010 | Electricians | Corona · Riverside County | — | — |
| Gannco Environmental Kleanup Services | Linda Sue Broyles | — | (951) 520 2617 | Other | Riverside · Riverside County | — | — |
| Ganzo Remodeling | Benjamin Gonzalez | — | (951) 813 6428 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Garage - O - Matic | Garage - O - Matic | — | (951) 796 3530 | Other | Menifee · Riverside County | — | — |
| Garage And Closet Kingdom INC | Marilyn Babich | — | (760) 342 2221 | Other | Indio · Riverside County | — | — |
| Garage Door Daddy LLC | Elias Daniel Martinez | — | (951) 295 7624 | Other | Eastvale · Riverside County | — | — |
| Garage Door Express | Garage Door Express | — | (760) 409 4805 | Other | Cathedral City · Riverside County | — | — |
| Garage Doors Hero And Gate | George Gabriel Gallegos | — | (951) 570 5707 | Other | Menifee · Riverside County | — | — |
| Garage Innovations INC | Daniel Edward Millis | — | (951) 352 0976 | Other | Riverside · Riverside County | — | — |
| Garage Living Palm Springs Synthetic Products | Gary Joseph Jr Distefano | — | (760) 989 4320 | Other | La Quinta · Riverside County | — | — |
| Garcia & Sons Concrete | Garcia & Sons Concrete | — | (951) 445 5916 | Other | Banning · Riverside County | — | — |
| Garcia & Sons Plumbing INC | Jorge Garcia | — | (714) 905 2207 | Other | Lake Elsinore · Riverside County | — | — |
| Garcia Electrical Systems | Omar A Garcia | — | (714) 504 9459 | Electricians | Corona · Riverside County | — | — |
| Garcia Plumbing Co DBA Joe C Garcia | Garcia Joe C | — | (760) 345 6300 | Other | Palm Desert · Riverside County | — | — |
| Garcia Torres Painting INC | Jorge Garcia | — | (949) 310 6073 | Windows, patio, painters | Lake Elsinore · Riverside County | — | — |
| Garcia's Construction | Garcia Jorge | — | (951) 295 0096 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Garcis Woodworks | Garcis Woodworks | — | (760) 343 6860 | Other | Cathedral City · Riverside County | — | — |
| Garden Concepts Professional Landscpae Design | Garden Concepts Professional Landscpae Design | — | (951) 694 6961 | Windows, patio, painters | Temecula · Riverside County | — | — |
| Garden Hills Landscape Services INC | Ramiro Correa Rodriguez | — | (951) 642 4464 | Windows, patio, painters | Calimesa · Riverside County | — | — |
| Gardens Tune Up | Felipe Mejia Ruiz | — | (949) 870 8833 | Windows, patio, painters | Perris · Riverside County | — | — |
| Gardiner Refrigeration | Gardiner Refrigeration | — | (951) 551 1626 | HVAC | Aguanga · Riverside County | — | — |
| Gardner Company INC | Dirk Warren Gardner | — | (951) 696 4495 | HVAC | Murrieta · Riverside County | — | — |
| Gardner Graphics | Gardner Graphics | — | (949) 289 3020 | Other | Hemet · Riverside County | — | — |
| Gardner Roofing Company | Vincent George Mac Donald | — | (951) 654 2794 | Other roofers | San Jacinto · Riverside County | — | — |
| Garewal Construction | Richard Anthony Garewal | — | (951) 318 6978 | GC, remodel, ADU | Banning · Riverside County | — | — |
| Garland Electric LLC | Brian Matthew Garland | — | (909) 917 1702 | Electricians | Menifee · Riverside County | — | — |
| Garnet Stone Roofing Services INC | Zarate Angelica | — | (951) 425 7366 | Other roofers | Riverside · Riverside County | — | — |
| Garney Pacific INC | Anthony Jorge Garcia | — | (951) 795 4520 | Electricians | Temecula · Riverside County | — | — |
| Garrett Construction | Gary Michael Garcia | info@garrettconstruction.com | (951) 375 1916 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Garrett Gerber INC | Garrett Edward Gerber | — | (760) 861 2123 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Garrett Schuler & Co INC | Garrett Gene Schuler | — | (760) 346 0736 | Windows, patio, painters | Palm Desert · Riverside County | — | — |
| Garrett's Roofing INC | Christopher Scott Garrett | — | (323) 979 5641 | Other roofers | Beaumont · Riverside County | — | — |
| Garsep Construction INC | Jorge Alberto Garcia-septien | — | (760) 567 9682 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |