| El Maestro Plumber INC | Gilberto Servin | — | (510) 407 1812 | Other | Rodeo · Contra Costa County | — | — |
| El Patron Construction INC | Elmer Hadilso Rosa | — | (510) 965 5234 | GC, remodel, ADU | San Pablo · Contra Costa County | — | — |
| Elaborate Builders | Elaborate Builders | — | (925) 852 7487 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| Eldridge Construction INC | Eldridge Eric Jones | — | (925) 933 3331 | GC, remodel, ADU | Pleasant Hill · Contra Costa County | — | — |
| Electric Avenue Company LLC | Jose Alberto Lara | — | (510) 480 6532 | Electricians | Pinole · Contra Costa County | — | — |
| Electric Heroes | Matan Levitay Wolf | — | (510) 289 4644 | Electricians | Concord · Contra Costa County | — | — |
| Electric Kingdom Power Solutions | Angel Angelito Mcfarland | — | (415) 792 2363 | Electricians | San Ramon · Contra Costa County | — | — |
| Electric Work Company | Wuilman Alfredo Moran | — | (415) 875 0734 | Electricians | San Pablo · Contra Costa County | — | — |
| Electrical | Farid Arfaian | — | (415) 412 6083 | Electricians | El Cerrito · Contra Costa County | — | — |
| Electrical & Instrumentation Services | Rashaan Denzel Whisenton | — | (510) 816 4494 | Electricians | Pleasant Hill · Contra Costa County | — | — |
| Electrical & Plumbing Incorporated | David Virgil Zaro | — | (925) 229 5683 | Electricians | Martinez · Contra Costa County | — | — |
| Electrical Maintenance & Installation | Matthew Burke Haverty | — | (925) 766 1847 | Electricians | Pacheco · Contra Costa County | — | — |
| Electrical Soldier | Dechaunte Lamar Wilson | info@electricalsoldier.com | (510) 875 9582 | Electricians | Antioch · Contra Costa County | — | — |
| Electrical Solutions | Anthony Davis Adams | — | (925) 381 6989 | Electricians | Clayton · Contra Costa County | — | — |
| Electrical Solutions Group | Rahmani Farjam | — | (925) 353 7777 | Electricians | Concord · Contra Costa County | — | — |
| Electrical Source Ltd | Shklovsky Eugene | — | (415) 314 8889 | Electricians | San Ramon · Contra Costa County | — | — |
| Electrical Trade School | Electrical Trade School | — | (925) 372-7083 | Electricians | Martinez · Contra Costa County | — | — |
| Electronic Innovations | Electronic Innovations | — | (510) 233 2795 | Other | Richmond · Contra Costa County | — | — |
| Electronic Innovations INC | Eric John Bledsoe | — | (510) 233 2795 | Electricians | Richmond · Contra Costa County | — | — |
| Electronic Security & Entertainment Corporation | Karl Matthew Dobrinich | — | (925) 944 5756 | Electricians | Walnut Creek · Contra Costa County | — | — |
| Elegant Stonework INC | Linh Ngoc Duong | focus@elegantstonework.com | (925) 954 8845 | Other | Walnut Creek · Contra Costa County | — | — |
| Elektro Plumbing INC | Daniel Armando Candido | — | (415) 988 4691 | Other | Richmond · Contra Costa County | — | — |
| Element Power Systems INC | Brian Kellett Allison | — | (925) 513 1772 | Electricians | Clayton · Contra Costa County | — | — |
| Elevate Construction | Christian John Del Cupolo | — | (925) 316 5154 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Elevate Construction | Oscar Enrique Ascencio-Portillo | — | (925) 305 0789 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Elevate Design Build INC | Justin Nole Hanson | info@elevatedesignbuild.com | (925) 429 8860 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Elevate Kitchen & Bath INC | Michael James Guzman | — | (925) 207 0363 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Elevated Homebuilders | Victor Anselmo Jr Garcia | — | (510) 926 1142 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Elevation Builders | Elevation Builders | — | (925) 428 2632 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Elevation Design | Elevation Design | — | (415) 515 8042 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Eli Flores | Eli Flores | elifloreslagunes@gmail.com | (510) 459 3412 | Electricians | Richmond · Contra Costa County | — | — |
| Eli's Tree Service INC | Eliseo Morales | — | (925) 497 4719 | Tree | Oakley · Contra Costa County | — | — |
| Elias Home Improvement INC | Jorge Gabriel Ramos | — | (925) 755 6858 | Electricians | Pacheco · Contra Costa County | — | — |
| Elias's Construction Co | Jose Elias Murcia Pena | — | (510) 253 3594 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Elischer Construction INC | Tammera Elischer Campbell | — | (510) 685 3790 | Other | Point Richmond · Contra Costa County | — | — |
| Elite Bay Home Improvements | Jimmy Joel Romero | — | (818) 930 9334 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Elite Comfort Systems | Victor Paul Jr Gewondjan | — | (925) 580 8875 | HVAC | Brentwood · Contra Costa County | — | — |
| Elite Development Builders | Rene Cardona | floresmiguel449a@gmail.com | (925) 446 7761 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| Elite Electric | Gary Arthur Jr Rogers | — | (510) 253 3272 | Electricians | Pinole · Contra Costa County | — | — |
| Elite Home And Commercial Property Inspections | Elite Home And Commercial Property Inspections | info@elitehcpi.com | (925) 922-4460 | Inspectors | Pleasanton · Contra Costa County | — | — |