| Amador Tree Service | Richard Tyler Lovelace | amadortreeservice@yahoo.com | (209) 213-4542 | Tree | Ione · Amador County | — | — |
| Amador Tuolumne Community Action Agency | Amador Tuolumne Community Action Agency | — | (209) 223 1485 | GC, remodel, ADU | Jackson · Amador County | — | — |
| Amador Valley Home Inspections | Amador Valley Home Inspections | — | (925) 872-2733 | Inspectors | Pleasanton · Amador County | — | — |
| Amador Valley Property Management Co | Amador Valley Property Management Co | — | (925) 551-8700 | Property managers | Dublin · Amador County | — | — |
| Amar Engineered Products | Amar Engineered Products | — | (323) 726-2885 | Windows, patio, painters | Baldwin Park · Amador County | — | — |
| Amazing Air Comfort Solutions | Amazing Air Comfort Solutions | — | (209) 283 6299 | HVAC | Ione · Amador County | — | — |
| Ameristar Windows & Doors | Ameristar Windows & Doors | — | (951) 790-0511 | Windows, patio, painters | Temecula · Amador County | — | — |
| Amick Electric LLC | Lance Wayne Heath | — | (209) 304 6915 | Electricians | Jackson · Amador County | — | — |
| Andrae Construction | Robert Lawrence Andrae | — | (209) 223 2906 | GC, remodel, ADU | Pine Grove · Amador County | — | — |
| Any & All Builders | Any & All Builders | — | (209) 223 2224 | GC, remodel, ADU | Sutter Creek · Amador County | — | — |
| Apex Home Builders INC | Wolfgang Roland Hocke | — | (209) 806 3027 | GC, remodel, ADU | Jackson · Amador County | — | — |
| Ar Technologies | Ar Technologies | — | (209) 418 5736 | GC, remodel, ADU | Pine Grove · Amador County | — | — |
| Arete Roofing | Juan Elias Estrada | — | (209) 223 9913 | Other roofers | Jackson · Amador County | — | — |
| Argos Building And Design | Argos Building And Design | — | (209) 256 5127 | GC, remodel, ADU | Jackson · Amador County | — | — |
| Armstrong & Son Construction INC | Nicole Christine Armstrong | — | (209) 223 1851 | Other | Jackson · Amador County | — | — |
| Armstrong Construction | Alex Russell Armstrong | — | (209) 267 5474 | GC, remodel, ADU | Sutter Creek · Amador County | — | — |
| Arnulfo Almaraz | Arnulfo Almaraz | — | (209) 273 9131 | Other | Jackson · Amador County | — | — |
| Asphalt Sealcoat Service | Robert Lawrence Andrae | andraesasphalt@gmail.com | (209) 223 2906 | Other | Pine Grove · Amador County | — | — |
| B C Jones Construction | Brian Charles Jones | — | (209) 327 9952 | GC, remodel, ADU | Jackson · Amador County | — | — |
| B R S Construction | Bryan Robert Stinson | — | (209) 257 9960 | GC, remodel, ADU | Ione · Amador County | — | — |
| B's Construction Company | Brian John Oertwig | — | (925) 580 9884 | GC, remodel, ADU | Ione · Amador County | — | — |
| Bailey Construction Company | Liam Patrick Bailey | — | (209) 256 6510 | GC, remodel, ADU | Pioneer · Amador County | — | — |
| Bart Hipp Construction DBA B H C | B H C | — | (916) 717 4504 | GC, remodel, ADU | Plymouth · Amador County | — | — |
| Bdkwtubs INC | Brent Michael Dawson | — | (408) 836 1242 | GC, remodel, ADU | Jackson · Amador County | — | — |
| Bethel Griffin & Co DBA The Griffin Company | Dennis Earl Griffin | — | (209) 267 1999 | GC, remodel, ADU | Sutter Creek · Amador County | — | — |
| Bill Heissenbuttel Construction | William Ernest Heissenbuttel | — | (209) 295 4580 | GC, remodel, ADU | Pioneer · Amador County | — | — |
| Birge Millwork | Birge Millwork | — | (209) 267 5425 | GC, remodel, ADU | Sutter Creek · Amador County | — | — |
| Blue Valley Remodeling INC | Ronald Leroy Williams | bluevalleyremodelinginc@gmail.com | (916) 508 7711 | GC, remodel, ADU | Plymouth · Amador County | — | — |
| Blustone Pool Construction | Joshua Brandon Parsons | — | (209) 332 7800 | Pool | Plymouth · Amador County | — | — |
| Bob Douglas Contracting LLC | Robert Lynn Douglas | — | (209) 283 8712 | GC, remodel, ADU | Sutter Creek · Amador County | — | — |
| Brett Steven Bunte | Brett Steven Bunte | — | (209) 304 7951 | Windows, patio, painters | Jackson · Amador County | — | — |
| Brian Hoyt Construction | Brian Frederick Hoyt | — | (209) 217 7155 | GC, remodel, ADU | Pioneer · Amador County | — | — |
| Brooks And Done Mechanical LLC | Justin Dean Brooks | — | (916) 742 9899 | HVAC | Ione · Amador County | — | — |
| Brown Woodworks | Brown Woodworks | — | (209) 247 5429 | Other | Pine Grove · Amador County | — | — |
| Brown's Home Remodeling | Brown's Home Remodeling | — | (209) 257 1258 | GC, remodel, ADU | Jackson · Amador County | — | — |
| Bryan Enterprises | Scott Jennings Bryan | — | (408) 234 4229 | GC, remodel, ADU | Pioneer · Amador County | — | — |
| Budd Construction | Arthur Michael Budd | — | (209) 207 8182 | GC, remodel, ADU | Pioneer · Amador County | — | — |
| Budget Window | Budget Window | info@budgetwindowslakeside.com | (619) 732-4653 | Windows, patio, painters | Lakeside · Amador County | — | — |
| Burgess Paving And Excavating | Burgess Paving And Excavating | — | (209) 295 7969 | Other | Pioneer · Amador County | — | — |
| C B Kelley Construction | Clayton Blake Kelley | — | (209) 256 5960 | GC, remodel, ADU | Pioneer · Amador County | — | — |