| Gregory Hartman | Gregory Hartman | — | (909) 855 0023 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Gregory James Bowers | Gregory James Bowers | — | (951) 240 0372 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Gregory Johnson Corp DBA G Johnson Construction | Gregory Neil Johnson | — | (760) 567 2026 | GC, remodel, ADU | La Quinta · Riverside County | — | — |
| Gregory Jon Stowe | Gregory Jon Stowe | — | (951) 756 8822 | Other | Riverside · Riverside County | — | — |
| Gregory Torres | Gregory Torres | — | (562) 946 1664 | Windows, patio, painters | Beaumont · Riverside County | — | — |
| Gregory Wellen DBA Pineapple Painting | Gregory Wellen DBA Pineapple Painting | — | (951) 580 9637 | Windows, patio, painters | Romoland · Riverside County | — | — |
| Greig Wilcoxen | Greig Wilcoxen | — | (951) 757 6462 | Other | Temecula · Riverside County | — | — |
| Grey-con Landscape Construction INC | Jeffrey Thomas Greyson | — | (951) 541 8312 | Windows, patio, painters | Wildomar · Riverside County | — | — |
| Greywolf Contracting INC | Armando Magana | — | (951) 314 3542 | GC, remodel, ADU | Norco · Riverside County | — | — |
| Griffin Construction Group INC DBA Calvet Construction | Warren Richard Kindberg | — | (760) 224 8864 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Griffin Tree Preservation | Griffin Tree Preservation | — | (619) 957 7420 | Tree | Temecula · Riverside County | — | — |
| Griffith Co | Robert Joseph Luebke | firstname@griffith.com | (951) 684 4800 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Griffiths Fence | Griffiths Fence | — | (760) 342 2400 | Other | Indio · Riverside County | — | — |
| Griggs Home Service | Kevin Michael Griggs | — | (909) 964 8064 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Grimm Construction Engineering | Misael Camarena | — | (619) 993 0385 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Griner Construction Company | Terry Lee Griner | — | (951) 659 5660 | GC, remodel, ADU | Idyllwild · Riverside County | — | — |
| Grip Golf & Landscape INC | Juan Ramon Garcia | — | (951) 485 7814 | Windows, patio, painters | Moreno Valley · Riverside County | — | — |
| Griselda Lopez | Griselda Lopez | — | (626) 324 8157 | Windows, patio, painters | Eastvale · Riverside County | — | — |
| Grit Construction | Gustavo Sanchez Morales | — | (951) 237 6533 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Grit Ps Construction INC | Eric Nicholas Fernandez | — | (760) 325 3050 | GC, remodel, ADU | Palm Springs · Riverside County | — | — |
| Gritton Construction Company | Norman Dale Gritton | — | (951) 315 5130 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Grizzly Electric | Abel Jr Pulido | — | (951) 977 6599 | Electricians | Riverside · Riverside County | — | — |
| Grizzly Landscape | Grizzly Landscape | — | (951) 775 5589 | Windows, patio, painters | Lake Elsinore · Riverside County | — | — |
| Grm Construction | Gavin Robert Moniot | — | (760) 578 8950 | GC, remodel, ADU | Indio · Riverside County | — | — |
| Gromon Landscape INC | Christopher Michael Groby | info@gromonlandscape.com | (951) 903 9615 | Windows, patio, painters | Eastvale · Riverside County | — | — |
| Grossmann Construction | Shawn Edward Grossmann | — | (408) 836 8924 | GC, remodel, ADU | Winchester · Riverside County | — | — |
| Ground Zero Flooring Contractors INC | Shawn Donovin Mcnamara | — | (424) 201 9799 | Other | Moreno Valley · Riverside County | — | — |
| Grounded Electrical Services INC | Armando Madali | — | (951) 314 1859 | Electricians | Lake Elsinore · Riverside County | — | — |
| Grounds Electric Company INC | Duane William Grounds | — | (951) 686 5601 | Electricians | Riverside · Riverside County | — | — |
| Groundscape Landscaping | Hernandez Eduardo Trejo | — | (909) 494 0245 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Growest Landscape | Growest Landscape | — | (760) 851 9478 | Windows, patio, painters | La Quinta · Riverside County | — | — |
| Grp Construction INC | John Russel De Falco | — | (909) 725 9828 | GC, remodel, ADU | Cherry Valley · Riverside County | — | — |
| Gruner Plumbing | Gruner Plumbing | — | (760) 218 9705 | Other | Indio · Riverside County | — | — |
| Gsc INC | Gregory Anthony Sprando | — | (503) 680 2212 | GC, remodel, ADU | Palm Desert · Riverside County | — | — |
| Gsc Services INC | Mircea Ovidiu Fitarau | — | (951) 824 9314 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Gsl Electrical & Lighting INC | Maximino Salatiel Patino | — | (760) 333 1862 | Electricians | Desert Hot Springs · Riverside County | — | — |
| Gsm Flooring INC | Gabriel Jovani Coffey | — | (951) 210 6064 | Other | Perris · Riverside County | — | — |
| Gsr Painting | Romero German Sugia | — | (951) 603 4273 | Windows, patio, painters | Lake Elsinore · Riverside County | — | — |
| Gt General INC | Tyler Joel Worthington | — | (951) 768 2035 | GC, remodel, ADU | Murrieta · Riverside County | — | — |
| Gta Drywall INC | Aguirre German | — | (951) 780 5405 | Other | Riverside · Riverside County | — | — |