| Heritage Mechanical Services | Andy Andrew Emil Iii Anderson | — | (209) 203 5307 | HVAC | Atwater · Merced County | — | — |
| Hernandez Reliable Lathing LLC | Jesus Enrique Hernandez | — | (209) 394 4528 | Other | Livingston · Merced County | — | — |
| Hgj Builders INC | Magana Efrain Romero | — | (209) 600 1628 | GC, remodel, ADU | Livingston · Merced County | — | — |
| Hightower & Sons INC | Terry Kay Hightower | — | (209) 602 8774 | GC, remodel, ADU | Winton · Merced County | — | — |
| His Tree Service INC | Brian Ottis Bawcum | — | (209) 632 7762 | Tree | Hilmar · Merced County | — | — |
| Hoffman Electronic Systems | Matthew Robert Hoffman | — | (209) 384 3305 | Electricians | Atwater · Merced County | — | — |
| Hoffman Security | Hoffman Security | — | (707) 261-0001 | Alarm and generators | City Of Atwater · Merced County | — | — |
| Holt's Home Improvement A Partnership | Rodney Lee Holt | — | (209) 358 9285 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Home Inspection Pro | Home Inspection Pro | — | (209) 417-2915 | Inspectors | City Of Atwater · Merced County | — | — |
| Honest Painting | Honest Painting | — | (209) 704 7080 | Windows, patio, painters | Los Banos · Merced County | — | — |
| Hot Shot Electric INC | Martinez Fernando Mendoza | — | (209) 354 9501 | Electricians | Winton · Merced County | — | — |
| Houck Construction | Larry Ray Jr Houck | — | (209) 489 1366 | GC, remodel, ADU | Hilmar · Merced County | — | — |
| Hr Silicon Valley Plumbers LLC | Henry Daniel Rivera | — | (408) 279 9509 | Other | Los Banos · Merced County | — | — |
| Hrc General Engineering Corp | Jason Allen Chamblin | — | (209) 829 3662 | Other | Los Banos · Merced County | — | — |
| Hs Framing INC | Sierra Reyes Hilario | — | (209) 752 8102 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Hydro Tech Rooter & Plumbing | Hydro Tech Rooter & Plumbing | — | (408) 679 5293 | Other | Los Banos · Merced County | — | — |
| I & F Framing INC | Ivan Magallanes Vidauri | — | (209) 600 2092 | Other | Merced · Merced County | — | — |
| Ian Koakane Hamilton | Ian Koakane Hamilton | — | (209) 564 2642 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Imperial Underground Development INC | Jimmy V Lomeli | — | (209) 658 7819 | Other | Merced · Merced County | — | — |
| Independent Irrigation Systems INC | Lonnie Ray Koehn | — | (209) 358 0683 | Other | Livingston · Merced County | — | — |
| Indoor-Restore Services - Merced | Indoor-Restore Services - Merced | — | (209) 451-2288 | Restoration | Merced · Merced County | — | — |
| Industrial Valley Welding | Salvador Ochoa-Hernandez | — | (209) 204 7369 | Other | Ballico · Merced County | — | — |
| Influx Energy | Cesar Arturo Solis Hernandez | — | (831) 594 3244 | Other roofers | Delhi · Merced County | — | — |
| Innovative General Contracting / Design | Richard Scott Johnson | — | (209) 761 2829 | GC, remodel, ADU | Merced · Merced County | — | — |
| Insulation INC | Russell Burt Marks | — | (209) 812 4657 | GC, remodel, ADU | Merced · Merced County | — | — |
| Integrity Heat And Air Conditioning | Integrity Heat And Air Conditioning | — | (209) 446 8362 | HVAC | Merced · Merced County | — | — |
| Iq Construction INC | Ignacio Quezada | — | (408) 605 7630 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Island's Landscaping | Island's Landscaping | — | (209) 819 0493 | Windows, patio, painters | Merced · Merced County | — | — |
| J & A Home Pro Construction & Painting LLC | Daniel Anthony Cresci | — | (209) 777 3900 | GC, remodel, ADU | Merced · Merced County | — | — |
| J & F Landscape | J & F Landscape | — | (209) 233 7958 | Windows, patio, painters | Livingston · Merced County | — | — |
| J - Co Fabrication | Jonathon Jorge Cota | — | (209) 829 9457 | Other | Los Banos · Merced County | — | — |
| J A Hernandez Construction INC | Jose Angel Hernandez | — | (209) 312 3857 | GC, remodel, ADU | Atwater · Merced County | — | — |
| J C General Construction INC | Jose Maria Cisneros | — | (209) 676 1869 | GC, remodel, ADU | Winton · Merced County | — | — |
| J C M Construction INC | John Deqing Chang | — | (415) 215 1698 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| J Dean Construction INC | Mohammad Kamal Jawad | — | (209) 201 5839 | GC, remodel, ADU | Merced · Merced County | — | — |
| J G Plumbing | J G Plumbing | — | (209) 777 0088 | Other | Dos Palos · Merced County | — | — |
| J I Painting | J I Painting | — | (831) 206 0388 | Windows, patio, painters | Los Banos · Merced County | — | — |
| J J Perez Paving INC | Jose J Perez Rodriguez | — | (209) 270 0490 | Other | Los Banos · Merced County | — | — |
| J Lopez Landscape | J Lopez Landscape | — | (209) 589 5952 | Windows, patio, painters | Delhi · Merced County | — | — |
| J M C A Construction INC | Juan Carlos Sanchez-mejia | — | (209) 610 3508 | GC, remodel, ADU | Stevinson · Merced County | — | — |