| Ingradu Construction Corp | Jorge Moran Gallo | — | (530) 392 0457 | Other | Gridley · Butte County | — | — |
| Innovative Heating And Air LLC | Jessica Curry Nail | — | (530) 990 0956 | HVAC | Oroville · Butte County | — | — |
| Innovative Mechanical Solutions | Innovative Mechanical Solutions | — | (530) 533 8088 | Other | Oroville · Butte County | — | — |
| Inside Out Landscaping & Janitorial | Nico Christopher Galindo | — | (530) 343 7994 | Windows, patio, painters | Chico · Butte County | — | — |
| Integrity Tile And Natural Stone | Integrity Tile And Natural Stone | — | (530) 624 5020 | Other | Chico · Butte County | — | — |
| Interior Installation Services | Thomas Edward Foster | — | (530) 870 1485 | Other | Gridley · Butte County | — | — |
| Inventive Construction Landscaping | John Philip Purviance | — | (530) 262 9006 | Windows, patio, painters | Chico · Butte County | — | — |
| Iron Cowboy Electric | Seth Benjamin Baxter | — | (530) 320 7097 | Electricians | Oroville · Butte County | — | — |
| Istvan Nemeth | Istvan Nemeth | — | (530) 592 7500 | Other | Chico · Butte County | — | — |
| J & J Tree Service LLC | Joshuwa William Felch | — | (530) 354 1843 | Tree | Chico · Butte County | — | — |
| J & M Electric | Michael David Campbell | — | (530) 591 2991 | Electricians | Chico · Butte County | — | — |
| J & R Enterprises | Jess Freddie Price | — | (530) 624 2262 | GC, remodel, ADU | Oroville · Butte County | — | — |
| J & V Tree Experts | Valerie Ann Sotero | — | (530) 709 5195 | Tree | Oroville · Butte County | — | — |
| J A Builders | J A Builders | — | (530) 891 4333 | GC, remodel, ADU | Chico · Butte County | — | — |
| J A Landscaping | J A Landscaping | — | (530) 370 7587 | Windows, patio, painters | Palermo · Butte County | — | — |
| J A M General Construction | James Allen Mc Call | — | (530) 412 1354 | GC, remodel, ADU | Chico · Butte County | — | — |
| J B Construction | Josh Denver Burroughs | — | (530) 864 6500 | GC, remodel, ADU | Paradise · Butte County | — | — |
| J B Construction Company | Joseph Bernard Baker | — | (530) 895 1573 | Electricians | Chico · Butte County | — | — |
| J C Griffin Const | J C Griffin Const | — | (530) 521 0701 | GC, remodel, ADU | Chico · Butte County | — | — |
| J D Plumbing | J D Plumbing | — | (530) 570 3418 | Other | Paradise · Butte County | — | — |
| J D S Builders | J D S Builders | — | (909) 744 0895 | GC, remodel, ADU | Chico · Butte County | — | — |
| J E Construction | Jesse Ethan Hillman | — | (530) 321 4869 | GC, remodel, ADU | Durham · Butte County | — | — |
| J F Lingemann Construction | Jion Froeliger Lingemann | — | (530) 864 4793 | GC, remodel, ADU | Cohasset · Butte County | — | — |
| J G Painting | J G Painting | — | (530) 588 8795 | Windows, patio, painters | Chico · Butte County | — | — |
| J H Electric | James Ray Heumann | — | (530) 308 4490 | Electricians | Paradise · Butte County | — | — |
| J Hall Construction | Jared Robert Hall | — | (530) 354 4345 | GC, remodel, ADU | Chico · Butte County | — | — |
| J J Heavy Equipment Farming And Construction | Santillan Jorge | — | (530) 218 6422 | Other | Gridley · Butte County | — | — |
| J J Lerche Construction | Jeffery Joseph Lerche | — | (530) 518 9749 | GC, remodel, ADU | Chico · Butte County | — | — |
| J K D Construction | Jerod Keith Davis | — | (530) 892 8231 | GC, remodel, ADU | Chico · Butte County | — | — |
| J K S Painting | J K S Painting | — | (707) 386 6812 | Windows, patio, painters | Oroville · Butte County | — | — |
| J L Beeman General Contractor | J L Beeman General Contractor | — | (707) 225 4912 | GC, remodel, ADU | Paradise · Butte County | — | — |
| J L K Construction | James Luther Kennard | bids@jlkconstruction.com | (916) 416 6702 | GC, remodel, ADU | Oroville · Butte County | — | — |
| J Lancaster Construction | Jennifer Rae Ann Lancaster | — | (530) 403 0330 | GC, remodel, ADU | Oroville · Butte County | — | — |
| J O R Construction | Justin Matthew O'rear | — | (530) 518 9173 | GC, remodel, ADU | Chico · Butte County | — | — |
| J P C Contracting | Joe Paul Card | — | (530) 521 1900 | GC, remodel, ADU | Chico · Butte County | — | — |
| J P Excavating Construction | John Michael Payton | — | (530) 228 7554 | Other | Chico · Butte County | — | — |
| J Platt Construction | Joshua Abraham Platt | — | (530) 519 7490 | GC, remodel, ADU | Chico · Butte County | — | — |
| J W Bamford INC | Nathan Clyde Bamford | — | (530) 353 6353 | Windows, patio, painters | Oroville · Butte County | — | — |
| J W Construction | Jacob Lewallyn West | — | (530) 354 0336 | GC, remodel, ADU | Chico · Butte County | — | — |
| J Z Plumbing | J Z Plumbing | — | (530) 681 3392 | Other | Chico · Butte County | — | — |