| Icom Mechanical INC | Elzbieta Grazyna Wozniak | — | (408) 792 2292 | HVAC | San Jose · Santa Clara County | — | — |
| Icon Home Builders INC | Paul Gabriel Hughes | — | (954) 701 3717 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Iconic Painting INC | Minho Han | — | (408) 530 8087 | Windows, patio, painters | Sunnyvale · Santa Clara County | — | — |
| Id Landscape | Id Landscape | — | (408) 759 6225 | Windows, patio, painters | Morgan Hill · Santa Clara County | — | — |
| Ideal Attic Insulation INC | John David Sallas | — | (408) 366 9683 | Other | San Jose · Santa Clara County | — | — |
| Ideal Home Construction INC | Zhen Peng Kevin Li | — | (408) 628 8958 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Ideal Plumbing Services INC | Luis Garcia Gamboa | — | (408) 207 7498 | Other | Gilroy · Santa Clara County | — | — |
| Ideal Project Builders INC | Jose Manuel Jr Frias | — | (408) 204 3573 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Ideal Roofing Co | Jose Guillermo Zaldivar | — | (408) 260 9430 | Other roofers | Santa Clara · Santa Clara County | — | — |
| Idec Mechanical INC | Joseph Bradley Holkesvig | — | (408) 826 9828 | HVAC | Morgan Hill · Santa Clara County | — | — |
| Ig Framing | Ig Framing | — | (559) 260 6557 | Other | Sunnyvale · Santa Clara County | — | — |
| Igreen Builders INC | Liron Knot | info@igreenbuilders.com | (650) 484 7900 | GC, remodel, ADU | Sunnyvale · Santa Clara County | — | — |
| Ikill Pest Control INC | Ikill Pest Control INC | — | (626) 272-9542 | Pest, tile roofs | Arcadia · Santa Clara County | — | — |
| Ilz Enterprises INC DBA I L Fine Woodworking | Rivera Lopez Ismael | — | (408) 981 3432 | Other | Los Gatos · Santa Clara County | — | — |
| Imagen Construction | Pedro Carlos Delgadillo | — | (408) 290 5426 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Imagiscape INC | Susana Guadalupe Leal | — | (408) 857 3188 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Img Plumbing | Img Plumbing | — | (408) 313 2953 | Other | Santa Clara · Santa Clara County | — | — |
| Immaculate Landscape & Maintenance | Immaculate Landscape & Maintenance | — | (408) 234 7758 | Windows, patio, painters | Mountain View · Santa Clara County | — | — |
| Immersive Experiences | Immersive Experiences | — | (650) 321 7833 | Other | Palo Alto · Santa Clara County | — | — |
| Impec Group LLC | Jason Yong-tian Fang | info@impecgroup.com | (408) 330 9350 | Electricians | Santa Clara · Santa Clara County | — | — |
| Imperia Roofing And Exteriors | Imperia Roofing And Exteriors | info@imperiare.com | (415) 813-9110 | Other roofers | Santa Clara · Santa Clara County | — | — |
| Imperial Concrete Sawing INC | Herminio Rosales | — | (408) 660 0625 | Other | San Jose · Santa Clara County | — | — |
| Imperial Tree | Imperial Tree | — | (408) 293 9577 | Tree | San Jose · Santa Clara County | — | — |
| Imperio Builder | Imperio Builder | — | (209) 373 3869 | GC, remodel, ADU | East Palo Alto · Santa Clara County | — | — |
| Imprescia Construction | Clifford Carmelo Imprescia | — | (650) 575 3144 | GC, remodel, ADU | Los Altos · Santa Clara County | — | — |
| Improved Properties | Improved Properties | — | (408) 221 2650 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| In Level Construction INC | Sergiu Morosan | — | (650) 215 8892 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| In-line Electrical Contractors | Gary David Ceglar | — | (408) 315 3090 | Electricians | San Jose · Santa Clara County | — | — |
| Increte West INC | Ricardo Daniel Lopez | — | (408) 592 0672 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Indaspec LLC | Saul Larios Inda | — | (408) 372 6801 | Other roofers | San Jose · Santa Clara County | — | — |
| Inder Design Build LLC | Manjit Singh Saini | — | (408) 313 5400 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Index Automatic Gate LLC | Ruiz Rodriguez Everardo | — | (408) 373 0222 | Other | San Jose · Santa Clara County | — | — |
| Indfoss Refrigeration Service INC | Tejinder Singh Bharaj | — | (650) 701 4555 | HVAC | San Jose · Santa Clara County | — | — |
| Indica Construction | Rios Alejandro Lucatero | — | (408) 508 1234 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| Indigo Bay Design & Construction | Nhat Duy Pham | — | (408) 393 7821 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Indigo Pools INC | Lois Montoya | — | (408) 262 0541 | Pool | Milpitas · Santa Clara County | — | — |
| Indoor Air Design INC | Victor Manuel Lopez | — | (408) 441 8844 | HVAC | San Jose · Santa Clara County | — | — |
| Industrial Lock Services | Edward Dale Harvey | — | (650) 961 5544 | Other | Sunnyvale · Santa Clara County | — | — |
| Industrial Piping Systems INC | Kenneth James Houle | — | (408) 821 0577 | Other | San Jose · Santa Clara County | — | — |
| Infante Builders INC | Genaro Sr Infante Quiroz | — | (408) 483 9702 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |