| Guardino Drywall INC | William Richard Guardino | — | (408) 348 8865 | Other | Gilroy · Santa Clara County | — | — |
| Guardino Well Drilling INC | Thomas Joseph Guardino | — | (408) 779 5904 | Other | Morgan Hill · Santa Clara County | — | — |
| Guardsline Security Inc. Security Guard Company | Guardsline Security Inc. Security Guard Company | info@guardslinesecurity.com | (800) 359-7057 | Alarm and generators | Santa Clara · Santa Clara County | — | — |
| Guerra Construction Group | Jaime Salvador Guerra | — | (408) 279 2027 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Guevara's Painting | Guevara's Painting | info@guevaraspainting.com | (408) 835 2661 | Windows, patio, painters | Campbell · Santa Clara County | — | — |
| Guidry T I Acoustics INC | Michael Anthony Guidry | — | (408) 891 1632 | Other | Campbell · Santa Clara County | — | — |
| Guild 33 Construction INC | Quinn Long | guildconstruction@gmail.com | (888) 484 5333 | Electricians | San Jose · Santa Clara County | — | — |
| Guild Construction INC | Joseph Raymond Fabbri | guildconstruction@gmail.com | (925) 201 3158 | GC, remodel, ADU | San Martin · Santa Clara County | — | — |
| Guild Craft Builder INC | David John Mc Loughlin | — | (650) 230 5249 | GC, remodel, ADU | Mountain View · Santa Clara County | — | — |
| Guillen Painting | Guillen Painting | jesus@guillenpainting.com | (408) 829 4332 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Guo Zu | Guo Zu | — | (408) 455 3539 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Guohua Zhang | Guohua Zhang | — | (650) 380 3299 | GC, remodel, ADU | Morgan Hill · Santa Clara County | — | — |
| Guoyi Li | Guoyi Li | — | (408) 627 5437 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Gustavo Hernandez Cortes | Gustavo Hernandez Cortes | — | (408) 466 0246 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Gutco General Engineering INC | Daniel Gutierrez | — | (408) 843 8226 | Other | Morgan Hill · Santa Clara County | — | — |
| Gutierrez Painting | Gutierrez Painting | gutierrez.painting@hotmail.com | (650) 218 7345 | Windows, patio, painters | Palo Alto · Santa Clara County | — | — |
| Gutter Pro's | Gutter Pro's | production@gutterpros.com | (408) 266 9494 | Other | San Jose · Santa Clara County | — | — |
| Guy Denues | Guy Denues | — | (408) 353 2267 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Guy Occhipinti Construction | Michael Guy Occhipinti | — | (408) 410 1387 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Guy's Heating Air Conditioning And Sheetmetal | Guy Arnold Trujillo | — | (408) 847 4898 | HVAC | Gilroy · Santa Clara County | — | — |
| Guys Concrete INC | Guy Dennis Guerrero | — | (408) 923 3738 | Other | San Jose · Santa Clara County | — | — |
| Gv Home Solutions INC | Valentina Valieva | — | (415) 408 1611 | GC, remodel, ADU | Mountain View · Santa Clara County | — | — |
| H & H Electrical & General Contractor | Rocky Dale Van Dergriff | — | (669) 371 6028 | Electricians | Santa Clara · Santa Clara County | — | — |
| H & H Heating And Air Conditioning Services INC | Hoang Tan Minh Mai | — | (408) 499 6598 | HVAC | San Jose · Santa Clara County | — | — |
| H & H Plumbing Service | Richard John Erwin Hoeft | — | (408) 978 1474 | Other | Los Gatos · Santa Clara County | — | — |
| H & J Construction | Sam Senido Hernandez | — | (408) 561 5156 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| H & L Construction | Mark Harlowe Hawkins | — | (831) 524 5293 | Other | San Jose · Santa Clara County | — | — |
| H & L Water Fire & Mold Remediation | Casaundra Lea Haney | — | (408) 630 6838 | Other | San Jose · Santa Clara County | — | — |
| H & S Construction INC | Hong Le Liang | — | (408) 829 1777 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| H B M Arborist INC | Maria Del Rosario Robles Solorzano | — | (669) 278 0291 | Other | San Jose · Santa Clara County | — | — |
| H B Quality Solutions | H B Quality Solutions | — | (408) 355 4262 | Electricians | Campbell · Santa Clara County | — | — |
| H Brito Construction | Humberto Jr Brito | — | (408) 667 3513 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| H C Painting | Vazquez Cecilia Morfin | — | (408) 987 1676 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| H C Rodney Construction | Hayden Cole Rodney | hayden1@hcrodneyconstruction.com | (408) 775 2245 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| H D Miller Construction Company INC | Florencio Ochoa | — | (650) 968 0291 | GC, remodel, ADU | Palo Alto · Santa Clara County | — | — |
| H H Construction | Havaeishamsabadi Hamid | — | (650) 440 3144 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| H H H Construction | Huy The Bui | — | (408) 394 3930 | Electricians | San Jose · Santa Clara County | — | — |
| H H Hydronics INC | Hector Albino Damian Hernandez | — | (650) 384 6393 | HVAC | East Palo Alto · Santa Clara County | — | — |
| H H Tone Construction INC | Samuel Alejandro Perez Mendoza | — | (408) 816 3059 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| H HVAC Services | Vong Hy Nguyen | — | (408) 656 0261 | HVAC | San Jose · Santa Clara County | — | — |