| Gb General Construction INC | Pena Gerardo Bustamante | — | (209) 445 8240 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Gbr Plumbing | Gbr Plumbing | — | (510) 677 1056 | Other | Los Banos · Merced County | — | — |
| Gecko Pest And Landscape Management | Gecko Pest And Landscape Management | — | (209) 388-1800 | Pest, tile roofs | Merced · Merced County | — | — |
| General Construction Repairs | Marco Antonio Rodriguez | — | (209) 808 8087 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Genesis Painting | Genesis Painting | — | (209) 826 9265 | Windows, patio, painters | Los Banos · Merced County | — | — |
| Gentry Construction A Partnership | Dana Edward Iii Gentry | — | (916) 996 4366 | Other roofers | Hilmar · Merced County | — | — |
| Gerald Bohn | Gerald Bohn | — | (209) 617 2169 | GC, remodel, ADU | Winton · Merced County | — | — |
| Ghr Builders INC | Romero Guadalupe Hernandez | — | (360) 721 3798 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Global Modular INC | Adam Niel De Bard | info@global-modular.com | (209) 676 8029 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Gm Construction | Mena Sanchez Guillermo | — | (209) 261 0998 | GC, remodel, ADU | Merced · Merced County | — | — |
| Gold Star Plumbing | Gold Star Plumbing | — | (831) 713 0573 | Other | Gustine · Merced County | — | — |
| Golden Cities Drywall INC | Marco A Espinoza | — | (408) 355 5934 | Other | Los Banos · Merced County | — | — |
| Golden Rule Contracting Services | Doyle Douglas Warkentin | — | (209) 261 3744 | GC, remodel, ADU | Winton · Merced County | — | — |
| Golden Star Painting INC | Gallo Pedro Mendez | goldenstarpainting24@gmail.com | (408) 613 6299 | Windows, patio, painters | Merced · Merced County | — | — |
| Golden Valley Fire Protection INC | David Jose Tapetillo | — | (209) 233 5293 | Other | Merced · Merced County | — | — |
| Gomez Concrete Construction | Jose Dario Gomez | — | (408) 625 0145 | Other | Los Banos · Merced County | — | — |
| Gomez Dairy Service LLC | Jesus Miguel Miravete | — | (209) 564 2389 | HVAC | Livingston · Merced County | — | — |
| Gonzales Construction | Paul Michael Gonzales | — | (818) 758-2490 | GC, remodel, ADU | Merced · Merced County | — | — |
| Goucher Mechanical | Goucher Mechanical | — | (209) 631 3432 | HVAC | Atwater · Merced County | — | — |
| Graham Porter Construction INC | Graham David Porter | — | (209) 358 1806 | Electricians | Merced · Merced County | — | — |
| Granite And Tile Gallery INCProtected | Scott Michael Viveiros | — | (209) 634 0019 | Tile roofers | Gustine · Merced County | — | — |
| Gravity Plumbing | Uscanga Esteban Bautista | — | (408) 849 8349 | Other | Los Banos · Merced County | — | — |
| Great Empire Plumbing INC | Roger Josue Romero | rogerromero@greatempirep.com | (714) 714 4013 | Other | Atwater · Merced County | — | — |
| Greatwest Inspection | Greatwest Inspection | — | (209) 600-3231 | Inspectors | Merced · Merced County | — | — |
| Green Era Signs INC | Luis Fernando Molina Madrigal | — | (209) 354 1809 | Other | Atwater · Merced County | — | — |
| Green Valley Plumbing INC | Andrade Francisco | — | (209) 756 0716 | Other | Atwater · Merced County | — | — |
| Greenscapes Landscaping Contractors | Emidio Emanuel Drumond | — | (209) 652 4500 | Windows, patio, painters | Merced · Merced County | — | — |
| Gridline Construction INC | Hector Manuel Jr Grimaldo | — | (209) 895 1205 | Other | Hilmar · Merced County | — | — |
| Grissom Construction INC | Kevin Scott Grissom | — | (209) 631 4067 | HVAC | Merced · Merced County | — | — |
| Grossman Construction | Mark Allen Grossman | — | (209) 564 0234 | GC, remodel, ADU | Cressey · Merced County | — | — |
| Guardco Security Services Inc. | Guardco Security Services Inc. | — | (209) 723-4273 | Alarm and generators | Merced · Merced County | — | — |
| Gutierrez Construction | Rafael Jr Gutierrez | — | (310) 699 6702 | GC, remodel, ADU | Atwater · Merced County | — | — |
| H&m Electrical INC | Paz Hector Mendoza | — | (619) 277 2117 | Electricians | Merced · Merced County | — | — |
| Hac Heating & Air Conditioning INC | Aguilar Horacio | — | (209) 357 3058 | HVAC | Winton · Merced County | — | — |
| Harris Builders INC | Craig Leo Harris | — | (209) 664 9486 | GC, remodel, ADU | Hilmar · Merced County | — | — |
| Hart Paving & Grading INC | Roy Arnold Jr Hart | — | (209) 383 9392 | Other | Merced · Merced County | — | — |
| Hdz Tree Service | Hdz Tree Service | ideashernandez2020@gmail.com | (209) 259-8404 | Tree | Merced · Merced County | — | — |
| Heavenly Mechanical Services LLC | Mirko Mircic | — | (254) 317 0735 | HVAC | Los Banos · Merced County | — | — |
| Henry George Farnsworth | Henry George Farnsworth | — | (209) 631 9423 | Electricians | Le Grand · Merced County | — | — |
| Herb's Mobile Home Set-up | Herb's Mobile Home Set-up | — | (209) 358 7429 | Other | Atwater · Merced County | — | — |