| Industrial Process Equipment INC | Michael James Waggoner | — | (951) 808 9192 | GC, remodel, ADU | Norco · Riverside County | — | — |
| Industrious Roofing | Diego Salvador Pedro | — | (760) 580 1334 | Other roofers | Murrieta · Riverside County | — | — |
| Infeenit Design | Infeenit Design | — | (714) 718 5838 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Infinite Building Solutions INC | James Douglas Mc Coy | — | (949) 466 9178 | HVAC | Corona · Riverside County | — | — |
| Infinite Design & Development | Infinite Design & Development | — | (951) 880 5615 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Infinite Entertainment | Infinite Entertainment | interested@domainmarket.com | (951) 333 0361 | Electricians | Norco · Riverside County | — | — |
| Infinite Pools | Frank Thomas Himpelmann | info@infinitepools.com | (951) 354 9888 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Infiniti Electric INC | Joshua Brian Dellsite | jonathan@infinitielectric.com | (951) 617-9912 | Electricians | Riverside · Riverside County | — | — |
| Infinitum General Contractor | Infinitum General Contractor | — | (714) 656 6724 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Infinity Air Services | Villa Ryan | ryan.villa@infinityairservices.com | (909) 975-2391 | HVAC | Riverside · Riverside County | — | — |
| Infinity Concrete | Manuel Jr Requena | — | (909) 846 9276 | Other | Perris · Riverside County | — | — |
| Infinity Construction | Vincent Paul Dominick | info@infinityconstruction.com | (951) 712 3548 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Infinity Construction | Gabriel Juvenal Tapia | info@infinityconstruction.com | (714) 398 7232 | GC, remodel, ADU | Jurupa Valley · Riverside County | — | — |
| Infinity Construction Corp | Zhenxi Gong | info@infinityconstruction.com | (657) 225 0408 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Infinity Construction General Building Contractor | Vincent Paul Dominick | — | (951) 712 3548 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Infinity Drywall Contracting INC | Lynn Fawzi Abuelhaj | — | (714) 634 2255 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Infinity Landscape INC | Arturo Madrigal Nunez | info@infinity-landscape.com | (760) 578 3261 | Windows, patio, painters | Indio · Riverside County | — | — |
| Infinity Paint & Design | Edwin Jonathan Orellana | — | (714) 820 0545 | Windows, patio, painters | Riverside · Riverside County | — | — |
| Infinity Painting INC | Gerber Omar Suchite | interested@domainmarket.com | (323) 781 6098 | Windows, patio, painters | Perris · Riverside County | — | — |
| Infinity Paving | Infinity Paving | — | (408) 599 8245 | Other | Perris · Riverside County | — | — |
| Infinity Plumbing Designs INC | Andrew Dominic Carlson | — | (951) 737 4436 | Other | Corona · Riverside County | — | — |
| Infinity Pool Service | Thomas Dean Thomas | — | (714) 262 9164 | Pool | Temecula · Riverside County | — | — |
| Infinity Pools INC | Maria Elena Leon | — | (760) 404 7625 | Pool | Coachella · Riverside County | — | — |
| Infinity Remediations | Gary Lee Carlson | — | (951) 547 7507 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Infinity Services | Robert Joseph Becker | — | (714) 871 4543 | Electricians | Murrieta · Riverside County | — | — |
| Infinity Stone | Infinity Stone | — | (951) 313 4082 | Other | Riverside · Riverside County | — | — |
| Infinity Structures INC | Harold Theodore Winters | — | (951) 940 6450 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Infinity Window Coverings INC | Bryan Craig Couey | — | (951) 842 5933 | Other | Riverside · Riverside County | — | — |
| Infinium Pools | Infinium Pools | — | (951) 797 9476 | Pool | Murrieta · Riverside County | — | — |
| Infx Works INC | Juan Ismael Camberos Orozco | — | (951) 783 7271 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Ing Electric INC | Ing Noran | — | (951) 399 2555 | Electricians | Corona · Riverside County | — | — |
| Inked Up Fellas Plumbing | James David Torres | — | (442) 256 0458 | Other | La Quinta · Riverside County | — | — |
| Inland Av Solutions INC | Justin Thomas Powell | — | (909) 328 1970 | Other | Calimesa · Riverside County | — | — |
| Inland Builders | Inland Builders | — | (951) 927 8655 | GC, remodel, ADU | Hemet · Riverside County | — | — |
| Inland Builders Group INC | Bernard Wilford Pichon | — | (951) 893 1316 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Inland Climate Control | James Errol Jones | — | (951) 368 3899 | HVAC | Riverside · Riverside County | — | — |
| Inland Coast Plumbing INC | Nicholas Paul Lewis | — | (951) 847 7009 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Inland Concrete Pumping | Inland Concrete Pumping | — | (951) 285 0036 | Other | Sun City · Riverside County | — | — |
| Inland Constructors And Builders | Mohammad Shoaib Siddiqui | — | (951) 907 9786 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Inland Contractors INC | Linda Sue Broyles | — | (951) 276 0600 | Other | Riverside · Riverside County | — | — |