| Homerun Electric | Yoav Hezi | — | (818) 402 9734 | Electricians | Woodland · Yolo County | — | — |
| Honesty First Roofing INC | Pedro Ruben Mandujano | — | (530) 908 6630 | Other roofers | Knights Landing · Yolo County | — | — |
| Hopkins Construction | Anthony Albert Hopkins | info@hopkinsconstruction.com | (530) 756 1543 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Horizon Contract Glazing INC | John Patrick Shurnas | — | (916) 373 9900 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| House Innovation Construction | Golovachov Eduard | — | (916) 598 6103 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Huerta Construction | Eric Isidiro Huerta | — | (916) 868 8249 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| I M C Building & Remodels | Ismael Morales | — | (916) 870 3396 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Ibarra Construction | Ibarra Diego | — | (530) 309 8158 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Ideal Builders General Contractors | Robert Eugene Hall | — | (916) 601 2746 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Iframe Builders INC | Velasco Israel Velasco | — | (279) 228 4778 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| Ike's Landscape INC | Erica Maia Aichwalder | — | (530) 758 1698 | Windows, patio, painters | Davis · Yolo County | — | — |
| Imagine Custom Construction | Thomas James Lee | — | (209) 681 5009 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Immaculate Painting | Immaculate Painting | — | (916) 216 2803 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| Inferno Metal Works INC | Damian Iseah Munoz | damian392@infernometalworks.com | (530) 405 8335 | Other | Woodland · Yolo County | — | — |
| Integrity Construction | Vicki Renee La Bourdette | — | (530) 979 1515 | Electricians | Davis · Yolo County | — | — |
| Interior Design & Construction | Daniel Douglas Wysong | — | (530) 383 3933 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Interior/exterior Painters | Interior/exterior Painters | — | (530) 902 1190 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Interstate Companies | Chad Berton Simmons | bids@interstate-companies.com | (530) 666 7061 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Interstella Landscaping | Interstella Landscaping | — | (530) 204 8941 | Windows, patio, painters | Davis · Yolo County | — | — |
| Ironman Custom Welding Works | Ironman Custom Welding Works | — | (707) 689 7027 | Other | Woodland · Yolo County | — | — |
| Ironstone Construction | Steven Kirk Labourdette | — | (916) 417 2749 | GC, remodel, ADU | Davis · Yolo County | — | — |
| Island Air Service | Ronal Ritesh Singh | interested@domainmarket.com | (916) 288 7425 | HVAC | West Sacramento · Yolo County | — | — |
| Island Landscape & Maintenance INC | Singh Mahendra | — | (530) 308 9422 | Windows, patio, painters | Davis · Yolo County | — | — |
| It's Fixed | It's Fixed | — | (530) 554 7494 | GC, remodel, ADU | Davis · Yolo County | — | — |
| It's Nacho Business | It's Nacho Business | — | (530) 966 6365 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| Itzko Glass And Metal INC | Colin Bram Itzko | — | (916) 760 7165 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| J - Walt Construction INC | Joseph Alan Walter | office@jwaltconstruction.com | (530) 406 2278 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| J B Builders | J B Builders | — | (530) 219 1905 | GC, remodel, ADU | Winters · Yolo County | — | — |
| J Brown Construction | Joshua Edward Brown | — | (209) 605 4369 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| J C M Electric | Julio Cesar Melara | — | (530) 216 7736 | Electricians | West Sacramento · Yolo County | — | — |
| J Castro Landscaping | J Castro Landscaping | — | (530) 979 0170 | Windows, patio, painters | Woodland · Yolo County | — | — |
| J D Construction Company | Jason Franklin Diaz | — | (916) 871 7126 | GC, remodel, ADU | West Sacramento · Yolo County | — | — |
| J G Acoustics | J G Acoustics | — | (530) 713 5731 | Other | Woodland · Yolo County | — | — |
| J I D Interlocking Pavers INC | Jose Carlos Manzanares Lopez | — | (916) 934 6194 | Other | W Sacramento · Yolo County | — | — |
| J L C Construction | Jose Luis Sanchez | — | (530) 379 8990 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| J Luna Construction INC | Leon Jorge Luna | — | (530) 848 2950 | GC, remodel, ADU | Woodland · Yolo County | — | — |
| J M L Concrete Specialties INC | Jennifer Marie Leal | — | (530) 876 7737 | Other | Knights Landing · Yolo County | — | — |
| J M S Painting Company | John Michael Demas | interested@domainmarket.com | (916) 692 6088 | Windows, patio, painters | West Sacramento · Yolo County | — | — |
| J Mc Dowell Welding And Farm Machinery INC DBA J Mc Dowell | Jack Allen Mc Dowell | — | (530) 661 6006 | GC, remodel, ADU | Winters · Yolo County | — | — |
| J Melgoza Electric INC | Juvenal Gomez Melgoza | juvenal@melgozaelectric.com | (530) 848 1983 | Electricians | Woodland · Yolo County | — | — |