| Energy Solutions Corp INC | Nicholas Charles Donzelli | — | (925) 494 4188 | HVAC | Clayton · Contra Costa County | — | — |
| Energy Wave Electric | Christopher Joseph Terlecky | — | (920) 226 0547 | Electricians | Richmond · Contra Costa County | — | — |
| Enervation Heating & Air Conditioning INC | Bryan Lee Arlaud | — | (925) 783 6494 | HVAC | Oakley · Contra Costa County | — | — |
| Enger Electrical Service | William Christian Enger | — | (925) 785 7801 | Electricians | San Ramon · Contra Costa County | — | — |
| Engineered Artworks LLC | Sean Brian Orlando | inquiry@engineeredartworks.com | (415) 515 1239 | Other | Richmond · Contra Costa County | — | — |
| Engineered Construction Services Corp | Roger Wall Ashton | — | (925) 969 9245 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Engineered Media Systems | Engineered Media Systems | — | (925) 858 9591 | Other | Danville · Contra Costa County | — | — |
| Engineered Soil Repairs INC | Morgan Ross Anderson | — | (925) 210 2150 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Engineering Remediation Resources Group INC | Jhonatan Alvarado | — | (925) 969 0750 | Other | Martinez · Contra Costa County | — | — |
| Enlightened Electric LLC | Max Steele Duffy | enlightenedelectric@yahoo.com | (341) 666 3324 | Electricians | Clayton · Contra Costa County | — | — |
| Enspech | Patrick Sean Lowry | — | (415) 854 8266 | Other | Lafayette · Contra Costa County | — | — |
| Enterprise Construction | David Trevor Davies | — | (925) 260 5658 | GC, remodel, ADU | Pleasant Hill · Contra Costa County | — | — |
| Enterprise Garage Doors | Richard Cabrera | entergaragedoors@gmail.com | (510) 245 1000 | Other | Hercules · Contra Costa County | — | — |
| Enterprise Roofing Service INC | Michael Lee Reardon | — | (925) 689 8100 | Other roofers | Concord · Contra Costa County | — | — |
| Entrust Masonry & Reconstruction | Entrust Masonry & Reconstruction | — | (925) 440 0888 | GC, remodel, ADU | Pacheco · Contra Costa County | — | — |
| Enviro Views INC | Armando Garcia Vega | info@enviro-views.com | (510) 236 6001 | Windows, patio, painters | Richmond · Contra Costa County | — | — |
| Environmental Cpr INC | John Brantley Iii Moore | — | (925) 806 0700 | GC, remodel, ADU | Danville · Contra Costa County | — | — |
| Environmental Mitigation Services INC | Kenneth Thomas Mercurio | — | (925) 864 1902 | GC, remodel, ADU | Discovery Bay · Contra Costa County | — | — |
| Envision Landscape Studio INC | Colin Garnet Miller | — | (925) 357 5887 | Windows, patio, painters | Walnut Creek · Contra Costa County | — | — |
| Eos Painting INC | Esteban Fernando Shiroma | — | (925) 679 8262 | Windows, patio, painters | Oakley · Contra Costa County | — | — |
| Epic Construction | Claudiu Codrut Tomuta | info@epicconstruction.com | (925) 448 1130 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Epic Pro Painting | Epic Pro Painting | — | (925) 237 7120 | Windows, patio, painters | Brentwood · Contra Costa County | — | — |
| Epicscapes LLC | Vazquez Ruben | — | (209) 639 1861 | Windows, patio, painters | Antioch · Contra Costa County | — | — |
| Epoxy Crew INC | Garibov Gidon | support@epoxycrew.com | (925) 727 7414 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Equinox Roofing | Equinox Roofing | equinoxroofinginc@gmail.com | (800) 880-6020 | Other roofers | Walnut Creek · Contra Costa County | — | — |
| Equinox Roofing Solutions INC | Gerardo Godinez | — | (628) 444 9877 | Other roofers | Walnut Creek · Contra Costa County | — | — |
| Er Home Improvements & General Construction INC | Edwin Gustavo Ramirez Lopez | — | (510) 776 5551 | GC, remodel, ADU | Hercules · Contra Costa County | — | — |
| Eran Nadler Construction | Nadler Eran | — | (925) 451 2986 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Erb Construction Custom Builders INC | Edy Arnoldo| Rodriguez Barrios Edy Arnold Rodriguez Barrios | — | (415) 871 3752 | GC, remodel, ADU | San Pablo · Contra Costa County | — | — |
| Eric Ayala | Eric Ayala | — | (925) 752 1913 | Other | Brentwood · Contra Costa County | — | — |
| Eric Green Communications INC | Eric John Green | — | (925) 565 2694 | Other | Discovery Bay · Contra Costa County | — | — |
| Eric Jones Contractor | Eric Jones Contractor | — | (925) 933 3331 | Other roofers | Pleasant Hill · Contra Costa County | — | — |
| Eric Leintz | Eric Leintz | — | (925) 383 5379 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Eric M A Rumpf Construction | Eric Michael Andrew Rumpf | — | (925) 934 0123 | GC, remodel, ADU | Pleasant Hill · Contra Costa County | — | — |
| Eric Swenson Painting | Eric Swenson Painting | — | (925) 351 8225 | Windows, patio, painters | Oakley · Contra Costa County | — | — |
| Erick Manzanares | Erick Manzanares | — | (925) 664 1237 | Other | Pittsburg · Contra Costa County | — | — |
| Erickson Construction | Bradley Lawrence Erickson | — | (925) 683 9782 | GC, remodel, ADU | San Ramon · Contra Costa County | — | — |
| Ernesto Del Pino | Ernesto Del Pino | — | (510) 910 2226 | Other | Oakley · Contra Costa County | — | — |
| Ernesto Luna Construction | Luna Avila Ernesto | — | (510) 706 1835 | GC, remodel, ADU | Richmond · Contra Costa County | — | — |
| Ernie's Construction Co | Reyes Aguilera Ernesto | — | (925) 808 8671 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |