| Aggressive Work INC | Bello-aguilar Oliver | — | (209) 996 7820 | GC, remodel, ADU | Winton · Merced County | — | — |
| Agrecom Inc. | Agrecom Inc. | — | (209) 726-0340 | Pest, tile roofs | Merced · Merced County | — | — |
| Agri-mex Tree & Landscape LLC | Roy Figueroa Abarca | — | (209) 383 6116 | Windows, patio, painters | Merced · Merced County | — | — |
| Aguilar's Tile | Aguilar's Tile | — | (209) 769 8165 | Other | Atwater · Merced County | — | — |
| Air - Eaze Heating & Air - Condition | Milton Mario Morales | — | (408) 605 0364 | HVAC | Merced · Merced County | — | — |
| Air Quality HVAC Heating & Cooling | Munoz Gerardo | — | (209) 421 1853 | HVAC | Atwater · Merced County | — | — |
| Air Tactics | Air Tactics | — | (209) 720 8151 | HVAC | Merced · Merced County | — | — |
| Ajc Property Maintenance LLC | Ajc Property Maintenance LLC | — | (209) 900-7930 | Restoration | Merced · Merced County | — | — |
| Ajg Garden Service | Ajg Garden Service | — | (209) 628-0207 | Tree | Merced · Merced County | — | — |
| Ak Plumbing And Drain Solutions | Ak Plumbing And Drain Solutions | — | (209) 864 5229 | Other | Atwater · Merced County | — | — |
| Alan Maxwell Construction | Hershell Alan Maxwell | — | (209) 485 8984 | GC, remodel, ADU | Livingston · Merced County | — | — |
| Albano's Construction Solutions INC | Darin Joseph Deniz | — | (209) 587 6354 | GC, remodel, ADU | Gustine · Merced County | — | — |
| Alberto's Hardwood Floors INC | Herrera Gonzalez Alberto | info@albertoshardwoodfloors.com | (408) 650 2277 | Other | Los Banos · Merced County | — | — |
| Alex Construction | Alejandro Torres Sanchez | — | (209) 631 0859 | GC, remodel, ADU | Merced · Merced County | — | — |
| Alfonso Velasco Electrical | Alfonso Santiago Velasco | — | (209) 230 8467 | Electricians | Winton · Merced County | — | — |
| Align Cabinets And Doors | Timothy Charles Williams | — | (209) 357 2159 | GC, remodel, ADU | Merced · Merced County | — | — |
| All A C Service | Jose Luis Cabanas-maldonado | — | (209) 777 5651 | HVAC | Livingston · Merced County | — | — |
| All About Tile INC | Israel Sandoval Mendoza | — | (209) 325 6091 | Other | Winton · Merced County | — | — |
| All American Excavation INC | Joseph Charles Moraga | — | (209) 769 7130 | Other | Merced · Merced County | — | — |
| All American Plumbing Heating & Air INC | Lamont Jacob Goldstein | — | (209) 826 7400 | HVAC | Los Banos · Merced County | — | — |
| All Around Painting | All Around Painting | — | (209) 631 9179 | Windows, patio, painters | Merced · Merced County | — | — |
| All Central Plumbing | All Central Plumbing | — | (209) 761 2794 | Other | Merced · Merced County | — | — |
| All Environmental Services LLC | Espinoza Brandon | — | (800) 577 1761 | Other | Winton · Merced County | — | — |
| All Points Construction INC General & Engineering Contractor | Francisco Javier Banuelos | — | (408) 338 6001 | GC, remodel, ADU | Gustine · Merced County | — | — |
| All Precision Plumbing INC | Jeffrey Allen Pavey | — | (209) 385 1250 | Other | Merced · Merced County | — | — |
| All Pro Pipeline And Concrete Service INC | Darrell Dustin Monroe | — | (209) 648 6897 | Other | Hilmar · Merced County | — | — |
| All Seasons Heating & A/c | All Seasons Heating & A/c | — | (209) 357 1180 | HVAC | Atwater · Merced County | — | — |
| All State Plumbing | All State Plumbing | — | (209) 756 5173 | Other | Livingston · Merced County | — | — |
| All Valley Plumbing | All Valley Plumbing | — | (209) 445 1357 | Other | Winton · Merced County | — | — |
| All-Phase Electric Supply | All-Phase Electric Supply | — | (209) 384-0777 | Electricians | Merced · Merced County | — | — |
| Allstar Fabrication + Welding | Jason David Aguirre | — | (209) 617 0221 | Other | Atwater · Merced County | — | — |
| Alma 1 Construction INC | Lua Alejandro | — | (209) 201 9598 | GC, remodel, ADU | Merced · Merced County | — | — |
| Alpha & Omega Builders | Alpha & Omega Builders | — | (209) 595 3974 | GC, remodel, ADU | Merced · Merced County | — | — |
| Alpha Omega Data Solutions INC | Raymond Jr Razo | — | (209) 349 2553 | Other | Los Banos · Merced County | — | — |
| Alvarado Stone Slab Fabrication | Alvarado Stone Slab Fabrication | — | (209) 276 8743 | Other | Livingston · Merced County | — | — |
| Alvarez Painting | Alvarez Painting | interested@domainmarket.com | (209) 620 5981 | Windows, patio, painters | Hilmar · Merced County | — | — |
| Always Rescue Plumbing INC | Daniel Antonio Munoz Rodas | — | (669) 271 1442 | Other | Los Banos · Merced County | — | — |
| Am Roofing Company | Maravilla Mora Adrian | impallari@gmail.com | (209) 658 3792 | Other roofers | Merced · Merced County | — | — |
| American Comfort Heating & Air Conditioning | Antonio Jr Baria | — | (209) 658 9648 | HVAC | Atwater · Merced County | — | — |
| American Helical LLC | Tyler John Sharp | — | (209) 648 5888 | GC, remodel, ADU | Stevinson · Merced County | — | — |