| Ernie's Plumbing & Sewer Service | Kathleen Michelle Blessing | — | (925) 228 5242 | Other | Martinez · Contra Costa County | — | — |
| Errington & Company INC | Kenneth Stanley Errington | — | (925) 766 1701 | GC, remodel, ADU | Walnut Creek · Contra Costa County | — | — |
| Ers Concrete INC | Ernesto Ramon Segura | — | (510) 620 4945 | Other | Hercules · Contra Costa County | — | — |
| Ers Construction Management And Consulting INC | Daniel Gomes Ribas | — | (925) 584 8057 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Erwin Integration | Erwin Integration | — | (925) 375 2938 | Electricians | Walnut Creek · Contra Costa County | — | — |
| Erwyn's Plumbing | Ramirez Lopez Israel | — | (510) 860 0802 | Other | Richmond · Contra Costa County | — | — |
| Escalamax Escalators & Elevators LLC | Francisco Berny-Garcia | — | (510) 586 8316 | Other | Martinez · Contra Costa County | — | — |
| Escamilla's Painting INC | Jose Maria Escamilla | — | (650) 716 9430 | Windows, patio, painters | San Pablo · Contra Costa County | — | — |
| Escobedo General Construction | Escobedo Vargas Ramon | escobedogeneralconstruction925@gmail.com | (925) 848 5142 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| Escorcia Custom Flooring Designs | Aguirre David Escorcia | — | (925) 594 3668 | Other | Brentwood · Contra Costa County | — | — |
| Espinosa And Son General Contractor INC | Juan Jose Espinosa | — | (925) 584 0794 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Espinoza Cabinet Shop | Espinoza Cabinet Shop | — | (415) 827 1162 | Other | Richmond · Contra Costa County | — | — |
| Espinoza Pool Builders | Espinoza Pool Builders | — | (510) 552 5486 | Pool | Oakley · Contra Costa County | — | — |
| Espinoza Remodeling | Espinoza Remodeling | — | (510) 367 1810 | GC, remodel, ADU | Hercules · Contra Costa County | — | — |
| Essential Engineering Plumbing & Rooter | Luis Gerardo Matamoros Torres | — | (650) 784 5744 | Other | Pittsburg · Contra Costa County | — | — |
| Est Remodeling | Est Remodeling | — | (925) 890 2884 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Estabrook's Window Coverings | Estabrook's Window Coverings | — | (415) 725 3334 | Other | Pinole · Contra Costa County | — | — |
| Estate Builders INC | Dennis Lee Locati | — | (925) 366 4263 | GC, remodel, ADU | Antioch · Contra Costa County | — | — |
| Estela's Fine Flooring LLC | Israel | estelasfineflooring@gmail.com | (510) 672 1576 | Other | Richmond · Contra Costa County | — | — |
| Estes Commercial Refrigeration INC | Michael John Doninelli | — | (510) 232 5464 | HVAC | Richmond · Contra Costa County | — | — |
| Estevez Construction | Paul David Estevez | — | (925) 565 3817 | GC, remodel, ADU | Oakley · Contra Costa County | — | — |
| Estrada Painting | Estrada Painting | — | (925) 628 1535 | Windows, patio, painters | Pittsburg · Contra Costa County | — | — |
| Estrada Painting INC | Johny Alexander Estrada | — | (925) 594 3656 | Windows, patio, painters | Crockett · Contra Costa County | — | — |
| Estrada's Carpentry | Estrada's Carpentry | — | (707) 386 3774 | Other | Pittsburg · Contra Costa County | — | — |
| Estudio D+b Construction | Adan Raul Mendez | — | (925) 595 5925 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Etcheverry & Son | Etcheverry & Son | — | (415) 720 1611 | Windows, patio, painters | Pinole · Contra Costa County | — | — |
| Ethan Allen Construction Inc. | Ethan Angier Allen | info@ethanallenconstruction.com | (415) 500 5100 | GC, remodel, ADU | Canyon · Contra Costa County | — | — |
| Ethos Environmental Construction | Caleb Joseph Esborg | — | (925) 330 3357 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Etic | Alan James Anselmo | — | (925) 602 4710 | Electricians | Pleasant Hill · Contra Costa County | — | — |
| Eugeny Construction | Eugeny Leontyevich Pristinsky | — | (925) 497 3313 | GC, remodel, ADU | Concord · Contra Costa County | — | — |
| Euro American Construction | Benjamin Radutiu | — | (925) 949 4303 | GC, remodel, ADU | Martinez · Contra Costa County | — | — |
| Europe Plumbing INC | Boris Nelson Bachvarov | — | (925) 725 9056 | Other | San Ramon · Contra Costa County | — | — |
| European Hardwood Floors | Milosevic Bojan | — | (415) 350 4364 | Other | Pleasant Hill · Contra Costa County | — | — |
| European Master Builders | European Master Builders | — | (510) 435 2442 | GC, remodel, ADU | Pittsburg · Contra Costa County | — | — |
| European Quality Construction And Remodeling | Barnabas Emil Szebeni | — | (925) 413 6404 | GC, remodel, ADU | Brentwood · Contra Costa County | — | — |
| Evan Peugh Landscape Contractor | Evan Peugh Landscape Contractor | — | (925) 580 0732 | Windows, patio, painters | Alamo · Contra Costa County | — | — |
| Evans Flooring | Evans Flooring | — | (925) 726 1809 | Other | Brentwood · Contra Costa County | — | — |
| Evans Tint Solutions LLC | Christopher Leigh Evans | chris.evans@evanstintsolutions.com | (925) 864 9703 | Other | Brentwood · Contra Costa County | — | — |
| Evcharger Expert | Erin Edward Finnegan | — | (415) 851 8351 | EV chargers | San Ramon · Contra Costa County | — | — |
| Ever Kool Climate Control | Ever Kool Climate Control | — | (925) 812 0104 | HVAC | Lafayette · Contra Costa County | — | — |