| A B C Painting | A B C Painting | — | (209) 338 7080 | Windows, patio, painters | Ceres · Stanislaus County | — | — |
| A B Construction | Armando Barajas Zepeda | — | (209) 872 1096 | GC, remodel, ADU | Ceres · Stanislaus County | — | — |
| A B P / All Bay Plumbing INC | Richard Hernandez Ochoa | — | (209) 551 4357 | Other | Modesto · Stanislaus County | — | — |
| A C Electric And Service | Lowell Wesley Sarrade | — | (209) 324 7394 | Electricians | Oakdale · Stanislaus County | — | — |
| A F M Services INC | Michael Edward Martinez | — | (209) 604 6027 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| A G Pro Painting INC | Christian Quirino Andrade Garcia | — | (209) 486 9652 | Windows, patio, painters | Patterson · Stanislaus County | — | — |
| A I C Electric | Ryan Loyd Borrell | — | (209) 501 0587 | Electricians | Modesto · Stanislaus County | — | — |
| A J Construction And R H Vac | Ajeet Singh Atwal | — | (209) 814 0255 | HVAC | Ceres · Stanislaus County | — | — |
| A J V Tile Marble & Granite | Verduzco Emiliano | — | (209) 681 1704 | Other | Modesto · Stanislaus County | — | — |
| A L Affordable INC | Anischenko Leonard | — | (209) 863 8101 | HVAC | Modesto · Stanislaus County | — | — |
| A N Electric | Nunez Del Rio Alexis | — | (209) 622 9927 | Electricians | Modesto · Stanislaus County | — | — |
| A Plus Kitchen And Bath | Anthony Rene Chavez | — | (209) 252 0800 | GC, remodel, ADU | Riverbank · Stanislaus County | — | — |
| A Plus Services Heating And Air INC | Juan Carlos Ramirez | — | (209) 900 3017 | HVAC | Salida · Stanislaus County | — | — |
| A Professional Garage Door Service INC | Luis Gerardo Escobedo | — | (209) 605 5751 | Other | Ceres · Stanislaus County | — | — |
| A S A P Heating & Air Conditioning | Christopher James Michener | — | (209) 522 4958 | HVAC | Modesto · Stanislaus County | — | — |
| A S A P Plumbing | A S A P Plumbing | — | (209) 847 9480 | Other | Oakdale · Stanislaus County | — | — |
| A Step Above Flooring INC | Fred Allen Ruelas | — | (209) 571 8583 | Other | Modesto · Stanislaus County | — | — |
| A Step Above Painting INC | Todd Justin Knutson | — | (209) 526 1500 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| A Step Beyond | A Step Beyond | — | (510) 228 8426 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| A Touch Of Color Painting | A Touch Of Color Painting | — | (209) 380 0614 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| A V Custom Painting | A V Custom Painting | — | (209) 622 6831 | Windows, patio, painters | Ceres · Stanislaus County | — | — |
| A&j Top Construction INC | Brambila Isamar Jimenez | — | (209) 596 8521 | GC, remodel, ADU | Turlock · Stanislaus County | — | — |
| A&n Mechanical INC | Pedro Jesus Alba Nevado | — | (209) 281 9605 | HVAC | Modesto · Stanislaus County | — | — |
| A+ Renovation Services | Jose Edgar Salazar Salas | — | (510) 260 3129 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| A+ Roofing Services | Jose Francisco Rodriguez | — | (209) 918 2586 | Other roofers | Modesto · Stanislaus County | — | — |
| A-1 Janitorial Services | Jesse Osvaldo Rivera | — | (209) 204 5312 | Other | Patterson · Stanislaus County | — | — |
| A-1 Painting | A-1 Painting | — | (209) 526 6959 | Windows, patio, painters | Ceres · Stanislaus County | — | — |
| A-1 Plumbing | A-1 Plumbing | — | (209) 541 4540 | Other | Modesto · Stanislaus County | — | — |
| A-1 Systematic Fire Protection INC | Mario Jr Rubio | — | (510) 514 5684 | Other | Patterson · Stanislaus County | — | — |
| A-maze Plumbing Services | Aleksandr Viktorovich Loboda | — | (209) 495 9416 | Other | Modesto · Stanislaus County | — | — |
| A1 Outdoor Living | Alexis Natividad Hernandez Martinez | — | (510) 200 4064 | Windows, patio, painters | Modesto · Stanislaus County | — | — |
| A1 Painting | A1 Painting | a1painting2004@yahoo.com | (510) 825 3799 | Windows, patio, painters | Patterson · Stanislaus County | — | — |
| A1 Rayans General Construction | Narayan Ravind | — | (209) 568 9490 | GC, remodel, ADU | Modesto · Stanislaus County | — | — |
| A1-electric | Juan Sebastian De La Vara | — | (209) 595 8783 | Electricians | Salida · Stanislaus County | — | — |
| A2z Drywall Construction | Hernandez Alfredo | — | (209) 380 9183 | Other | Ceres · Stanislaus County | — | — |
| Aaa Construction | Sam Aziz Sorisho | yuriy@aaaconstruction.com | (408) 722 4581 | Electricians | Modesto · Stanislaus County | — | — |
| Aaa Painters Corporation | Steven Mark Childers | em4steve@gmail.com | (209) 612 0190 | Windows, patio, painters | La Grange · Stanislaus County | — | — |
| Aabco Electric | Tony Dutra Silveira | — | (209) 606 8337 | Electricians | Turlock · Stanislaus County | — | — |
| Aac Painters INC | Jaime Alejandro Delgadillo | — | (209) 485 5103 | Windows, patio, painters | Patterson · Stanislaus County | — | — |
| Aane Renovation Painting | Aane Renovation Painting | — | (209) 277 3131 | Windows, patio, painters | Turlock · Stanislaus County | — | — |