| 10 Star Development Group INC | Rudy Anthony Lopez | — | (669) 900 3946 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| 12 Rivers Construction | Michael Bruce Stonehocker | arielle.pennington@riversconstruction.com | (408) 206 8909 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| 831 Jg Landscaping INC | Ceja Jesus Gonzalez | — | (831) 297 4545 | Windows, patio, painters | Hollister · San Benito County | — | — |
| A & E Construction | Alberto Orona Rodriguez | — | (831) 224 0671 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| A & E Electric INC | Juan Manuel Sanchez | — | (408) 843 6784 | Electricians | Hollister · San Benito County | — | — |
| A & N Plumbing INC | Antonio Guaracha | — | (831) 637 3873 | HVAC | Hollister · San Benito County | — | — |
| A E S Security INC | Ignacio Velazquez | — | (831) 638 1737 | Electricians | Hollister · San Benito County | — | — |
| A G B Builder's INC | Baron Agustin Gonzalez | — | (408) 202 1242 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| A G Construction | Alex Ayala Garcia | — | (831) 902 5643 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| A M Flooring Installations | A M Flooring Installations | — | (408) 835 5091 | Other | Hollister · San Benito County | — | — |
| A-1 Backhoe Service | Scott Douglas Hill | — | (408) 639 8453 | Other | Hollister · San Benito County | — | — |
| A5 Drywall INC | Alberto Anguiano Colmenero | — | (831) 524 7926 | Other | Hollister · San Benito County | — | — |
| Aaa Fence Company INC | Owen Mark Williams | — | (408) 727 5465 | Other | Hollister · San Benito County | — | — |
| Abundant Heating & Air | Abundant Heating & Air | — | (408) 319 7785 | HVAC | Hollister · San Benito County | — | — |
| Accurate Cleaning Systems | Richard George Mendes | — | (831) 636 9767 | Other | Hollister · San Benito County | — | — |
| Ace Roofing & Waterproofing Systems INC | Robert James Torres | — | (831) 212 0332 | Other roofers | Hollister · San Benito County | — | — |
| Acp Concrete Pumping INC | Aaron James Grimsley | — | (831) 901 6935 | Other | Hollister · San Benito County | — | — |
| Adept Electrical Services INC | Thomas Gerald Brinkley | — | (831) 524 6416 | Electricians | Hollister · San Benito County | — | — |
| Advanced General Construction | Jose Carlos Dutra | — | (408) 690 7100 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Advanced Grading Paving And Underground Utilities INC | Christopher James Crow | — | (831) 212 5216 | Other | Hollister · San Benito County | — | — |
| Advanced Tile And Marble | Advanced Tile And Marble | — | (408) 461 0851 | Other | Hollister · San Benito County | — | — |
| Advanced Tile Innovations | Advanced Tile Innovations | advancedtileinnovations@yahoo.com | (408) 612 9946 | Other | Hollister · San Benito County | — | — |
| Advantage Heating And Sheet Metal INC | Ramirez Francisco | — | (831) 636 0766 | HVAC | Hollister · San Benito County | — | — |
| Advantage Truss Company LLC | Garcia-orosco Rafael | sales@advantagetruss.com | (831) 635 0377 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Aes Companies INC | Velazquez Ignacio | — | (831) 638 1737 | Electricians | Hollister · San Benito County | — | — |
| Ag Glass And Windows INC | Angel Robles-Vidauri | — | (831) 207 0359 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Agan Cabinetry | Agan Cabinetry | — | (831) 637 6523 | Other | Hollister · San Benito County | — | — |
| Air - Wolf | Air - Wolf | info@airwolf.com | (408) 438 1521 | HVAC | Hollister · San Benito County | — | — |
| Airductcleaningsolutions LLC | Carlos Alberto Vargas | — | (831) 537 8811 | Other | Hollister · San Benito County | — | — |
| Al - Bana Construction Co | Idris Mosleh Mohssin | — | (831) 970 1235 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Al Fresco Landscape Management INC | Lucille Ann Del Carlo | — | (831) 636 5444 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Al Fresco Landscaping INC | Lucille Ann Del Carlo | — | (831) 636 5444 | Windows, patio, painters | Hollister · San Benito County | — | — |
| Al V INC | Albert Valdivia Jr Valles | — | (831) 636 4960 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| Al Valles Drywall | Al Valles Drywall | — | (408) 804 0053 | GC, remodel, ADU | San Juan Bautista · San Benito County | — | — |
| Alaniz Builders INC | Luis Miguel Alaniz Huizar | — | (408) 375 0401 | GC, remodel, ADU | Paicines · San Benito County | — | — |
| All About Insulation INC | Javier Medina | — | (831) 207 0951 | Other | Hollister · San Benito County | — | — |
| All American Excavating And Grading | Edward Richard Iii Canadas | — | (831) 596 2798 | Other | San Juan Bautista · San Benito County | — | — |
| All Kind Plumbing Services | J Guadalupe Albarran Moreno | allkindplumbingcorp@gmail.com | (408) 512 7939 | Other | Hollister · San Benito County | — | — |
| All Phase Construction LLC | Thomas Craig Perreira | — | (831) 801 7727 | GC, remodel, ADU | Hollister · San Benito County | — | — |
| All Star Framing Builder INC | Gonzalez Florentino | — | (831) 818 5066 | Other | Hollister · San Benito County | — | — |