| A & R Tree Services INC | Giovanny Alexander Donado | — | (925) 510 4100 | Tree | Concord · Contra Costa County | — | — |
| All Seasons Tree Care INC | Uriel Medina Barron | info@allseasonstreecare.com | (707) 365 9452 | Tree | Richmond · Contra Costa County | — | — |
| Altitude Essentiel Tree Service | Dhaou Moussa | — | (415) 350 6472 | Tree | Pinole · Contra Costa County | — | — |
| Alvarado Tree Service | Alvarado Benites Leodegario | — | (510) 672 7853 | Tree | Richmond · Contra Costa County | — | — |
| Arborland Tree Service INC | Nelzon Arturo Castellanos | arborlandtreeservice@yahoo.com | (925) 497-2271 | Tree | Concord · Contra Costa County | — | — |
| Atlas Tree Service INC | William Wayne Lloyd | atlastreeservice@atlastreeservice.com | (925) 687 3631 | Tree | Pleasant Hill · Contra Costa County | — | — |
| Bay Area Tree Care INC | Fernando Duarte Caldera | info@bayareatreecare.net | (510) 222 2963 | Tree | Pinole · Contra Costa County | — | — |
| Best Decision Tree Service | Francisco Javier Gonzalez Gallo | — | (925) 791 1312 | Tree | Antioch · Contra Costa County | — | — |
| Better City Tree Services INC | David Gallo | bettercity3@gmail.com | (925) 464 9010 | Tree | Martinez · Contra Costa County | — | — |
| Big Chief Tree Service Incorporated | Peter Kent Rudy | — | (510) 528 3588 | Tree | El Cerrito · Contra Costa County | — | — |
| C & C Tree Solutions | C & C Tree Solutions | — | (510) 330 6201 | Tree | Concord · Contra Costa County | — | — |
| Cal - Line Tree Care | Cal - Line Tree Care | — | (925) 329 2899 | Tree | Concord · Contra Costa County | — | — |
| Califa Tree Care INC | Jesus Carlitos Carbajal Diaz | — | (510) 815 5954 | Tree | Richmond · Contra Costa County | — | — |
| Ccl Trees Services | Juan Manuel Gaspar De La Cruz | juangaspar@ccltrees.com | (925) 565 1554 | Tree | Oakley · Contra Costa County | — | — |
| Contra Costa Tree & Stump Removal | Bruce Elliot Adair | — | (415) 420 6464 | Tree | El Sobrante · Contra Costa County | — | — |
| Contra Costa Tree And Stump Removal | Contra Costa Tree And Stump Removal | bruceeadair@hotmail.com | (510) 669-9925 | Tree | Contra Costa · Contra Costa County | — | — |
| Dan's Tree Service | Daniel William Cooley | — | (510) 237 1630 | Tree | El Sobrante · Contra Costa County | — | — |
| Defensible Space And Tree Service | Timothy Edgar Opdycke | — | (925) 980 8937 | Tree | Orinda · Contra Costa County | — | — |
| Donado Tree Services INC | Juan Ramon Donado | — | (925) 765 4064 | Tree | Concord · Contra Costa County | — | — |
| E G Tree Services | Galvan Eduardo | egtreeservices@gmail.com | (925) 550 2566 | Tree | Pittsburg · Contra Costa County | — | — |
| Earnest A Thomas DBA Tree Care Of California | Tree Care Of California | — | (925) 689 4446 | Tree | Concord · Contra Costa County | — | — |
| East Bay Tree Service | Ghavamzadeh Victor | info@eastbaytreeservice.com | (925) 260 7995 | Tree | Moraga · Contra Costa County | — | — |
| Ecology Tree Care INC | Luis Herrera | — | (925) 440 9990 | Tree | Concord · Contra Costa County | — | — |
| Eli's Tree Service INC | Eliseo Morales | — | (925) 497 4719 | Tree | Oakley · Contra Costa County | — | — |
| Elite Tree Service | Edward Allan Jenson | — | (510) 523 9399 | Tree | Walnut Creek · Contra Costa County | — | — |
| Encinal Tree Service | Jose Jesus Vargas | — | (925) 286 4328 | Tree | Martinez · Contra Costa County | — | — |
| Evergreen Tree Care | Evergreen Tree Care | — | (925) 825-8165 | Tree | Pittsburg · Contra Costa County | — | — |
| Galindo Tree Care INC | Ortiz Jonathan Procopio | galindotreeservices@gmail.com | (925) 289 6144 | Tree | Concord · Contra Costa County | — | — |
| Gilbert's Tree Services | Minda Orlando Nanez | — | (510) 701 2514 | Tree | Concord · Contra Costa County | — | — |
| Green Lane Tree Service INC | Yina Yanet Alva Sanchez | — | (925) 705 2100 | Tree | Brentwood · Contra Costa County | — | — |
| Green View Tree Service | Rosas Cirilo | — | (925) 826 8069 | Tree | Concord · Contra Costa County | — | — |
| Gregorio Tree Service INC | Maria Del Carmen Sanchez | — | (510) 776 6831 | Tree | Martinez · Contra Costa County | — | — |
| Horticultural Services Ltd | Christopher Donzel Chapman | — | (925) 254 1459 | Tree | Orinda · Contra Costa County | — | — |
| Jc Tree Service | Marcos Emilio Ulloa | — | (925) 679 1400 | Tree | Antioch · Contra Costa County | — | — |
| Julian Tree Care INC | Julian C Cabrera Ramirez | juliantreecarebids@gmail.com | (510) 256 7009 | Tree | Richmond · Contra Costa County | — | — |
| Junior's Tree Service INC | Sergio Jesus Gonzalez-Verde | — | (925) 250 2698 | Tree | Pacheco · Contra Costa County | — | — |
| Local Tree INC | Justin Vance Anderson | — | (415) 684 4224 | Tree | Richmond · Contra Costa County | — | — |
| M & M Tree Service | Mark Charles Menges | — | (510) 237 5618 | Tree | Point Richmond · Contra Costa County | — | — |
| Mathers Tree Service LLC | Richard Roy Mathers | — | (925) 372 3649 | Tree | Pleasant Hill · Contra Costa County | — | — |
| Montes Tree Services | Leoncio Montes | — | (925) 325 2528 | Tree | Brentwood · Contra Costa County | — | — |