| C J Bradleys Electric | Ross Bradley Perlee | — | (209) 304 5611 | Electricians | Pine Grove · Amador County | — | — |
| C J S Buildings | C J S Buildings | — | (209) 296 1777 | GC, remodel, ADU | Pine Grove · Amador County | — | — |
| Calaveras Builders | Calaveras Builders | — | (209) 610 6448 | Electricians | Ione · Amador County | — | — |
| Calipro Painters INC | Justin Daniel Haag | — | (209) 304 5256 | Windows, patio, painters | Pioneer · Amador County | — | — |
| Campbell Construction General Engineering INC | Jeff Allen Campbell | — | (209) 267 5998 | Other | Sutter Creek · Amador County | — | — |
| Campoy General Contracting | Anthony Michael Campoy | — | (209) 304 7083 | GC, remodel, ADU | Plymouth · Amador County | — | — |
| Canyon Country Woodworks | Canyon Country Woodworks | — | (916) 257 0463 | Other | Pine Grove · Amador County | — | — |
| Capitol Celtic Drywall | Capitol Celtic Drywall | — | (916) 606 3567 | Other | Pine Grove · Amador County | — | — |
| Capstone Pool & Spa Remodeling | Capstone Pool & Spa Remodeling | — | (619) 631-7678 | Pool | Lakeside · Amador County | — | — |
| Carl H Towne | Carl H Towne | — | (916) 508 7751 | GC, remodel, ADU | Fiddletown · Amador County | — | — |
| Carter's Quality Roofing | Donald Delance Jr Carter | — | (209) 267 0345 | Other roofers | Jackson · Amador County | — | — |
| Caruso Pacific Construction | Steven Arthur Caruso | — | (209) 296 2277 | GC, remodel, ADU | Fiddletown · Amador County | — | — |
| Casey Vinciguerra Construction | Casey Raymond Vinciguerra | — | (209) 304 5319 | Other | Sutter Creek · Amador County | — | — |
| Cazadd Construction | Jason Robert Cazadd | — | (209) 217 4252 | Other | Jackson · Amador County | — | — |
| Cedar Ridge Construction | Vincent Carlo Franco | — | (831) 889 8321 | GC, remodel, ADU | Pine Grove · Amador County | — | — |
| Central Sierra Electric Company INC | Clifford Wayne Franklin | — | (209) 223 3363 | Electricians | Jackson · Amador County | — | — |
| Central Sierra Roofing | Daniel Cosmo Guida | centralsierraroofing@gmail.com | (209) 283 3571 | Other roofers | Pine Grove · Amador County | — | — |
| Chris Reis Construction | Chris Ernest Reis | — | (209) 295 1259 | GC, remodel, ADU | Pioneer · Amador County | — | — |
| Christian Builders Incorporated | Melanie Gene Kidman | — | (209) 304 8490 | GC, remodel, ADU | Pine Grove · Amador County | — | — |
| Christman Construction INC | Jeffrey Kurtis Christman | — | (209) 418 5550 | GC, remodel, ADU | Ione · Amador County | — | — |
| Christopher L Parkey | Christopher L Parkey | — | (209) 223 2255 | Other | Pioneer · Amador County | — | — |
| Comfort Solutions INC | Mike S Santos | — | (916) 340 4063 | HVAC | Ione · Amador County | — | — |
| Commercial Dynamics | Commercial Dynamics | — | (916) 761 3182 | GC, remodel, ADU | Jackson · Amador County | — | — |
| Consult - Design - Construct | Philip John Perham | — | (408) 398 7077 | Electricians | Fiddletown · Amador County | — | — |
| Coronado Doors & Windows INC | Coronado Doors & Windows INC | — | (619) 695-4639 | Windows, patio, painters | Santee · Amador County | — | — |
| Creach Construction Co INC | Monty Randell Creach | — | (209) 256 1709 | GC, remodel, ADU | Jackson · Amador County | — | — |
| Crystal Clean | Crystal Clean | awesomeservice@crystalclean.com | (209) 662 0278 | Other | Jackson · Amador County | — | — |
| Cut Above Forest Management | Cut Above Forest Management | — | (209) 304 7507 | Other | Volcano · Amador County | — | — |
| Cwf Construction | Charles Wayne Foyil | — | (209) 274 6188 | GC, remodel, ADU | Ione · Amador County | — | — |
| D D C Construction | Donald Delance Jr Carter | — | (209) 267 0345 | GC, remodel, ADU | Jackson · Amador County | — | — |
| D Fence Man | D Fence Man | — | (209) 274 4520 | Other | Ione · Amador County | — | — |
| D Knight Construction | Daniel Robert Knight | — | (209) 295 2022 | GC, remodel, ADU | Pioneer · Amador County | — | — |
| D Tile Source | D Tile Source | — | (209) 790 9673 | Other | Ione · Amador County | — | — |
| Dal Porto Excavating | Dal Porto Excavating | — | (916) 531 5345 | Other | Plymouth · Amador County | — | — |
| Daniel J Mc Gee | Daniel J Mc Gee | — | (209) 295 4588 | GC, remodel, ADU | Volcano · Amador County | — | — |
| Dave Bunfill Blacktop Service | David Wayne Bunfill | — | (888) 926 6197 | Windows, patio, painters | Plymouth · Amador County | — | — |
| Dave Harris Construction | David Wayne Harris | — | (209) 770 4920 | GC, remodel, ADU | Jackson · Amador County | — | — |
| Davenport Properties | Davenport Properties | kelleedavenport@sbcglobal.net | (209) 223-5655 | Property managers | Jackson · Amador County | — | — |
| David Brotherton | David Brotherton | — | (209) 296 7736 | GC, remodel, ADU | Volcano · Amador County | — | — |
| David D Moser | David D Moser | — | (916) 257 7608 | GC, remodel, ADU | Plymouth · Amador County | — | — |