| Horizon Construction | Miguel Angel Gutierrez | — | (831) 578 7223 | GC, remodel, ADU | Salinas · Monterey County | — | — |
| Houlihan Development & Consulting INC | Sean Patrick Houlihan | — | (831) 601 7357 | Other | Carmel · Monterey County | — | — |
| House Wires INC | Jim Milton Jr Staples | — | (831) 659 8324 | GC, remodel, ADU | Carmel · Monterey County | — | — |
| Houston Design & Construction INC | Jessie James Houston | daniel@houstondesignconstruction.com | (832) 878-1817 | GC, remodel, ADU | Carmel Valley · Monterey County | — | — |
| Howard Charles R | Howard Charles R | — | (831) 393 1914 | Electricians | Seaside · Monterey County | — | — |
| Howard Daly Construction | Richard Howard Daly | — | (831) 449 4023 | GC, remodel, ADU | Salinas · Monterey County | — | — |
| Hr Painting | Hr Painting | heli@hrpaintingandremodeling.com | (831) 320 9012 | Windows, patio, painters | Marina · Monterey County | — | — |
| Hr Sheet Metal INC | Carlos Alberto Hernandez Ramos | — | (831) 214 7603 | HVAC | Greenfield · Monterey County | — | — |
| Hr Solid Building Framing Contractor | Hr Solid Building Framing Contractor | — | (831) 613 4455 | Other | Salinas · Monterey County | — | — |
| Huitron Lath & Plastering INC | Luis Manuel Huitron Moreno | — | (831) 794 7145 | Other | Salinas · Monterey County | — | — |
| Hummingbird Landscape | Hummingbird Landscape | — | (408) 762 8551 | Windows, patio, painters | Soledad · Monterey County | — | — |
| Hunt Bros Construction INC | Forrest De Sales Hunt | — | (831) 625 6322 | GC, remodel, ADU | Carmel · Monterey County | — | — |
| Hunter Mason Construction INC | Hunter Ray Mason | — | (831) 809 7409 | GC, remodel, ADU | Salinas · Monterey County | — | — |
| Hutch's Plumbing INC | Timothy Doyle Hutchison | — | (831) 754 3740 | Other | Salinas · Monterey County | — | — |
| Hy / Lo Plumbing | Hy / Lo Plumbing | — | (831) 375 7577 | Other | Monterey · Monterey County | — | — |
| I Q Devices | I Q Devices | — | (831) 238 1580 | Other | Carmel Valley · Monterey County | — | — |
| Ichor Restoration | Ichor Restoration | — | (310) 801 9160 | Restoration | Prunedale · Monterey County | — | — |
| Icon Building & Development INC | James Matthew Harrington | — | (831) 920 6007 | GC, remodel, ADU | Monterey · Monterey County | — | — |
| Icon Glass INC | Andrew John Moore | — | (831) 676 3603 | Windows, patio, painters | Salinas · Monterey County | — | — |
| Ignacio Concrete | Ignacio Concrete | — | (831) 394 0676 | Other | Seaside · Monterey County | — | — |
| Illusions INC | Juan Pablo Vasquez | — | (831) 324 4407 | Windows, patio, painters | Seaside · Monterey County | — | — |
| Imperial Home Improvement LLC | Jose Enrique Oribio Mondragon | — | (831) 512 5262 | GC, remodel, ADU | Salinas · Monterey County | — | — |
| In Living Color Custom Products | In Living Color Custom Products | — | (831) 840 4388 | Windows, patio, painters | Marina · Monterey County | — | — |
| Inca Landscape Management | Inca Landscape Management | — | (831) 625 0900 | Windows, patio, painters | Carmel · Monterey County | — | — |
| Industrial Pump Shop INC | John Ross Piearcy | — | (831) 758 6163 | Electricians | Salinas · Monterey County | — | — |
| Infante Builders | Infante Builders | — | (831) 758 3409 | GC, remodel, ADU | Salinas · Monterey County | — | — |
| Infinity Electric | Kurt Vincent Kastner | — | (831) 229 8755 | Electricians | Salinas · Monterey County | — | — |
| Infinity Painting | Infinity Painting | — | (831) 905 2491 | Windows, patio, painters | Salinas · Monterey County | — | — |
| Innovation Steel Enterprise INC | Leobardo Pedraza | — | (831) 269 9229 | Other | Salinas · Monterey County | — | — |
| Innovations Painting INC | Ojeda Acosta Gustavo | support@webware.io | (831) 206 1982 | Windows, patio, painters | Salinas · Monterey County | — | — |
| Inside Out Landscape Design INC | Eliza Sipos De Ciantis | — | (831) 624 4991 | Windows, patio, painters | Carmel Valley · Monterey County | — | — |
| Instant Replay Co | Robert Stephen Czomba | — | (831) 375 0949 | Other | Pacific Grove · Monterey County | — | — |
| Inverness Construction Co | Lochlan Angus Mc Vicar | — | (831) 455 5242 | GC, remodel, ADU | Spreckels · Monterey County | — | — |
| Ioenergy Incorporated | David Richard Krueger | — | (831) 298 0048 | Electricians | Carmel · Monterey County | — | — |
| Ironwood Builders | Eric Lee Sousa | — | (831) 595 0591 | GC, remodel, ADU | Monterey · Monterey County | — | — |
| Ironwood Fabrication | Ironwood Fabrication | shop@ironwoodfabrication.com | (831) 595 2817 | Other | Carmel Valley · Monterey County | — | — |
| Isaac Painting | Isaac Painting | — | (831) 915 2769 | Windows, patio, painters | Monterey · Monterey County | — | — |
| Isaacson Enterprises INC | Robert Lee Jr Isaacson | — | (831) 642 0221 | Windows, patio, painters | Pacific Grove · Monterey County | — | — |
| Isac V Masonry | Isac V Masonry | — | (831) 869 8960 | Other | Seaside · Monterey County | — | — |
| Ispec Home Inspection | Ispec Home Inspection | — | (831) 277-3028 | Inspectors | Carmel Valley · Monterey County | — | — |