| Greater Valley Conservation Corp | Michael Eugene Jr Totten | — | (209) 292 2700 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Green Bay Landscape Maintenance | Salvador Patino Rodriguez | — | (209) 931 4320 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Green Builder | Green Builder | — | (408) 595 2544 | Electricians | Stockton · San Joaquin County | — | — |
| Green Care Landscape | Green Care Landscape | — | (209) 481 9062 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Green Hill Roofing INC | Julio Beas | julie@greenhillroofing.com | (209) 949 1146 | Other roofers | Stockton · San Joaquin County | — | — |
| Green River Builders INC | Gabino Barron | — | (209) 483 6277 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Green Solutions Construction INC | Ageo Sanchez | — | (925) 580 7921 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Green Technology Windows And Doors | Edward James Sawicki | — | (209) 846 0207 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Green Thumb Landscape INC | David Joseph Kisst | — | (209) 838 1349 | Windows, patio, painters | Escalon · San Joaquin County | — | — |
| Green Valley Air Heating & Air Conditioning INC | Jorge Luis Hernandez Garcia | — | (209) 570 6897 | HVAC | French Camp · San Joaquin County | — | — |
| Greener Solutions INC | Hayden Lee Iii Logan | — | (209) 946 5796 | HVAC | Stockton · San Joaquin County | — | — |
| Greenshield Solutions Remodeling INC | Brando E Camacho Martinez | — | (510) 946 9070 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Greenwood Gc INC | Joshua Thomas Green | — | (209) 210 7975 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Greer Family Plumbing | Greer Family Plumbing | — | (209) 823 1349 | Other | Ripon · San Joaquin County | — | — |
| Greg Koehler Heating & Air | Greg Koehler Heating & Air | — | (209) 810 8105 | HVAC | Lodi · San Joaquin County | — | — |
| Greg Ramos Con | Greg Ramos Con | — | (209) 404 8659 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Greg Stephens | Greg Stephens | — | (209) 333 0136 | Other | Lodi · San Joaquin County | — | — |
| Gregg Property Service | Kenneth Roger Gregg | — | (209) 334 4227 | Other | Lodi · San Joaquin County | — | — |
| Gregory R Ledger | Gregory R Ledger | — | (925) 980 6055 | Other | Manteca · San Joaquin County | — | — |
| Gregory Skelton Construction | Gregory Alan Skelton | — | (209) 986 3920 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Greks Paving INC | Sergio Daniel Rodarte | — | (209) 362 5709 | Other | Tracy · San Joaquin County | — | — |
| Griffin Soil LLC | William Scott Howard | info@griffinsoil.com | (925) 862 2260 | Other | Stockton · San Joaquin County | — | — |
| Grimm Farms And Fabrication | Grimm Farms And Fabrication | — | (209) 456 2586 | Other | Manteca · San Joaquin County | — | — |
| Grizzly Fence & Gate Service | Jairo Anthony Gonzalez | — | (209) 420 5636 | Other | Stockton · San Joaquin County | — | — |
| Grizzly Heating & Air | David Scott Bender | — | (209) 425 1490 | HVAC | Lodi · San Joaquin County | — | — |
| Grupe Homes | Nelson Edward Bahler | — | (209) 473 6000 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Gto Glass Pro | Luis Angel Rangel Arredondo | gtoglassprod@gmail.com | (510) 896 0686 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Guardian Construction And Restoration | Arias Ramos Abel | — | (510) 731 4831 | GC, remodel, ADU | Manteca · San Joaquin County | — | — |
| Guardian Electrical Contractors | Angel Garcia | — | (510) 330 9106 | Electricians | Stockton · San Joaquin County | — | — |
| Gueinz Flooring Corp | Francisco Guillermo Guerrero Montoya | — | (510) 938 9162 | Other | Tracy · San Joaquin County | — | — |
| Guerini General Engineering | Brian Anthony Guerini | — | (707) 217 9050 | Other | Manteca · San Joaquin County | — | — |
| Guerra's Concrete INC | Juan Carlos Guerra Segura | — | (209) 922 9593 | Other | Stockton · San Joaquin County | — | — |
| Guerrero Electric Co | Guerrero Lucio | — | (209) 401 5704 | Electricians | Stockton · San Joaquin County | — | — |
| Guerrero's Heating & Air Conditioning | Guerrero Victor | — | (209) 482 1818 | HVAC | Stockton · San Joaquin County | — | — |
| Guillen Lath & Plastering INC | Lucio Guadalupe Perez Solis | — | (209) 623 9647 | Other | Stockton · San Joaquin County | — | — |
| Guindon Construction | Michael Joseph Guindon | — | (209) 518 8656 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Gundershaug Electric | Thomas N Gundershaug | — | (209) 200 0842 | Electricians | Lodi · San Joaquin County | — | — |
| Gunsch Electric INC | Corine Dee Ann Gunsch | ed@gunschelectric.com | (209) 823 7687 | Electricians | Manteca · San Joaquin County | — | — |
| Gustavo Romo DBA Romo Pools | Gustavo Romo DBA Romo Pools | — | (209) 914 7768 | Pool | Ripon · San Joaquin County | — | — |
| Gutierrez Concrete | Gutierrez Concrete | — | (408) 930 6083 | Other | Stockton · San Joaquin County | — | — |