| Gordon Construction | Andrew Richard Gordon | — | (650) 544 7934 | GC, remodel, ADU | San Carlos · San Mateo County | — | — |
| Gordon Kullberg & Son INC | Marion M Kullberg | — | (650) 333 0198 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Gotelli Boiler | Gotelli Boiler | — | (415) 717 5442 | HVAC | Brisbane · San Mateo County | — | — |
| Gotelli Plumbing INC | Leo Edwin Gotelli | — | (707) 633-3508 | HVAC | Brisbane · San Mateo County | — | — |
| Gp Electrical | Generoso Castro Pangan | — | (415) 812 0943 | Electricians | Daly City · San Mateo County | — | — |
| Graben INC | Timothy Newton Yaeger | — | (650) 388 2688 | GC, remodel, ADU | Menlo Park · San Mateo County | — | — |
| Grabher Construction | Robert Alan Grabher | — | (650) 271 1806 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Grace Construction | Lopez Griselda | — | (650) 468 8314 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Gradilla Franco Construction INC | Franco Heydi | — | (323) 877 7964 | GC, remodel, ADU | Redwood City · San Mateo County | — | — |
| Graham Plastering INC | Colm Patrick Graham | colm@grahamplastering.com | (650) 738 2858 | Other | Pacifica · San Mateo County | — | — |
| Grand Electric & Construction Co INC | Nikodimos Yirgu Woldemariam | — | (650) 588 5678 | Electricians | San Bruno · San Mateo County | — | — |
| Granite Electric INC | David Nathaniel Plotkin | — | (650) 355 7566 | Electricians | Brisbane · San Mateo County | — | — |
| Granite Excavation & Demolition INC | Joseph Patrick Cassidy | — | (650) 737 8700 | GC, remodel, ADU | Colma · San Mateo County | — | — |
| Grant Construction | Timmy Lee Grant | — | (650) 520 5937 | GC, remodel, ADU | San Carlos · San Mateo County | — | — |
| Grant Plumbing | Grant Plumbing | — | (650) 444 4292 | Other | San Mateo · San Mateo County | — | — |
| Graphics On The Edge | Graphics On The Edge | — | (650) 255 4661 | Other | Redwood City · San Mateo County | — | — |
| Greatwall Building Contractor INC | Ivan Jia-Jun Pan | — | (510) 207 6262 | GC, remodel, ADU | San Carlos · San Mateo County | — | — |
| Grech Construction | Paul Joseph Grech | — | (650) 867 9203 | GC, remodel, ADU | Pacifica · San Mateo County | — | — |
| Green Again Landscaping | Joseph Michael Sheetz | — | (650) 368 9304 | Windows, patio, painters | San Carlos · San Mateo County | — | — |
| Green Arrow Plumbing | Cornelio Valencia-Chavez | — | (208) 513 5275 | Other | Burlingame · San Mateo County | — | — |
| Green Bay Landscaping | Green Bay Landscaping | — | (650) 716 7582 | Windows, patio, painters | Redwood City · San Mateo County | — | — |
| Green City Construction INC | Eric Huang | — | (415) 860 8071 | GC, remodel, ADU | Millbrae · San Mateo County | — | — |
| Green Cleaning & Drying | Green Cleaning & Drying | — | (415) 312 7332 | Other | Daly City · San Mateo County | — | — |
| Green Construction | Paul Troy Green | — | (415) 572 6461 | GC, remodel, ADU | Pacifica · San Mateo County | — | — |
| Green Construction Builder Corp | Situ Lawrence | — | (415) 939 1312 | GC, remodel, ADU | Burlingame · San Mateo County | — | — |
| Green Day Landscaping INC | Daniel Gonzalez | — | (650) 346 5400 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Green Electric Company | Phillip Andrew Green | — | (650) 759 6929 | Electricians | Burlingame · San Mateo County | — | — |
| Green Fashion Nursery INC | Julia Claudia Heredia Faustor | gfnursery.sm@gmail.com | (650) 348 3813 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Green Heritage Landscape Management | Green Heritage Landscape Management | — | (650) 619 8050 | Windows, patio, painters | Redwood City · San Mateo County | — | — |
| Green Leaf Landscaping & Maintenance | Ricardo Antonio Perez Garcia | — | (650) 315 3913 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Green Painting Co | Elyaqiym Haslston Chilqiyahuw | — | (650) 716 3725 | Windows, patio, painters | Menlo Park · San Mateo County | — | — |
| Green Starr | Green Starr | — | (650) 834 2365 | Windows, patio, painters | Pacifica · San Mateo County | — | — |
| Green Street Construction | Shandor Jozsef Szentkuti | — | (415) 531 2315 | GC, remodel, ADU | Pacifica · San Mateo County | — | — |
| Green Terrace Landscape | Green Terrace Landscape | — | (650) 773 0283 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Green Town Landscaping INC | Agustin Alonso Estrada Lopez | — | (650) 520 0518 | Windows, patio, painters | Redwood City · San Mateo County | — | — |
| Greenberg Construction Co | Uri A Greenberg | info@greenberg-construction.com | (415) 531 0979 | Electricians | Redwood City · San Mateo County | — | — |
| Greenleaf Landscaping | Greenleaf Landscaping | — | (650) 271 5452 | Windows, patio, painters | San Mateo · San Mateo County | — | — |
| Greenscape Construction INC | Roy Duane Preston | — | (415) 385 1336 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |
| Greenwood Custom Builders INC | Huerta Gregorio Martinez | gm@greenwoodcbi.com | (650) 382 7582 | GC, remodel, ADU | San Carlos · San Mateo County | — | — |
| Greg Scopazzi | Greg Scopazzi | — | (650) 212 5617 | GC, remodel, ADU | San Mateo · San Mateo County | — | — |