| Endless Communications INC | April Leahn Gonzalez | — | (949) 305 8604 | Other | Riverside · Riverside County | — | — |
| Endless Painting | Endless Painting | — | (951) 229 9456 | Windows, patio, painters | Perris · Riverside County | — | — |
| Endless Summer Pools And Design | Endless Summer Pools And Design | — | (951) 764 9522 | Pool | Murrieta · Riverside County | — | — |
| Endless Touch Construction INC | Jacob Sterns Avalos | — | (949) 836 5399 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Endo Plumbing Co INC | Sanchez Hector | — | (951) 934 3039 | Other | Riverside · Riverside County | — | — |
| Endresen Development INC | Joshua James Endresen | — | (951) 757 5695 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Endurance Plumbing | Endurance Plumbing | — | (951) 741 6492 | Other | Jurupa Valley · Riverside County | — | — |
| Endure Electric Company | Arthur William Iii Murphy | info@endureelectric.com | (951) 966 2464 | Electricians | Murrieta · Riverside County | — | — |
| Endure Roofing INC | Esequiel Jr Tello | — | (951) 581 2162 | Other roofers | Perris · Riverside County | — | — |
| Energy Electric | Adam Derek Murschel | — | (951) 679 2736 | Electricians | Menifee · Riverside County | — | — |
| Energy Plus | Energy Plus | — | (714) 717 9606 | HVAC | Murrieta · Riverside County | — | — |
| Energy Product Experts LLC | Raymond James Trejo | — | (951) 331 3070 | Electricians | Temecula · Riverside County | — | — |
| Energy Transfer Solutions LLC | Lynn Gary Holton | — | (951) 893 7580 | Electricians | Riverside · Riverside County | — | — |
| Enfield Electric Enterprises | Douglas Todd Enfield | — | (951) 553 5919 | Electricians | Canyon Lake · Riverside County | — | — |
| English Carpenter | English Carpenter | — | (951) 870 0825 | GC, remodel, ADU | Corona · Riverside County | — | — |
| English Electric | Edward Glenn English | — | (951) 941 8790 | Electricians | Menifee · Riverside County | — | — |
| Engstrom Construction INC | Glenn Hartley Engstrom | — | (760) 668 3961 | GC, remodel, ADU | Indian Wells · Riverside County | — | — |
| Enhanced Construction INC | Guzman Jaime Contreras | — | (323) 424 0736 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Enhanced Flooring INC | Anthony Jason Muscarella | — | (951) 376 6478 | Other | Menifee · Riverside County | — | — |
| Enhanced Security Solutions Inc. | Enhanced Security Solutions Inc. | — | (951) 642-9761 | Alarm and generators | Riverside · Riverside County | — | — |
| Enkg5 Painting | Enkg5 Painting | — | (951) 497 0416 | Windows, patio, painters | Moreno Valley · Riverside County | — | — |
| Enos Demolition INC | John Robert Enos | — | (760) 464 7053 | Other | Thousand Palms · Riverside County | — | — |
| Enpro Grid Technologies LLC | Paul Donald Chamberlain | — | (559) 906 7285 | Electricians | Temecula · Riverside County | — | — |
| Enr Concrete INC | Lopez Enrique | — | (951) 210 0998 | Other | Murrieta · Riverside County | — | — |
| Enriched Energy Solutions INC | Andrew Neil Roche | — | (760) 403 5017 | Electricians | Mira Loma · Riverside County | — | — |
| Enrichment Air INC | Ricardo Andres Vega Hernandez | info@enrichmentair.com | (760) 989 8984 | HVAC | Coachella · Riverside County | — | — |
| Enrique Lopez | Enrique Lopez | — | (951) 552 3261 | Other | Winchester · Riverside County | — | — |
| Enrique Lopez Jr | Enrique Lopez Jr | — | (951) 467 9839 | GC, remodel, ADU | Temecula · Riverside County | — | — |
| Enrique Soriallamas | Enrique Soriallamas | — | (760) 574 2465 | Other | Thousand Palms · Riverside County | — | — |
| Enriquez Concrete Construction | Enriquez Duarte Francisco | — | (760) 574 0064 | Other | Blythe · Riverside County | — | — |
| Enriquez Pools LLC | Ronald Anthony Enriquez | — | (949) 615 4610 | Windows, patio, painters | Corona · Riverside County | — | — |
| Enriquez Tile | Enriquez Tile | — | (760) 261 0490 | Other | Riverside · Riverside County | — | — |
| Enterprise Electric Datacom | Ted Michael Kristensen | — | (951) 296 1530 | Electricians | Temecula · Riverside County | — | — |
| Entropy Refg-solutions INC | Jesus Alberto Hernandez | — | (951) 546 1592 | HVAC | Lake Elsinore · Riverside County | — | — |
| Environmental Assessment Services & Education Of California | Daniel Carlos Parke Montijo | — | (866) 788 3273 | HVAC | Murrieta · Riverside County | — | — |
| Environmental Concepts Landscape Management INC | James Raymond Blacketer | — | (951) 587 6551 | Windows, patio, painters | Temecula · Riverside County | — | — |
| Enviroscape Landcare LLC | Emilio Castillo Hernandez | emilio@enviroscapelandcare.com | (760) 989 3820 | Windows, patio, painters | Indio · Riverside County | — | — |
| Enviroworks Engineering | Scott Lee Thompson | — | (951) 505 4023 | Other | Temecula · Riverside County | — | — |
| Envision Construction | Danielle Amy Sexton | interested@domainmarket.com | (909) 327 7411 | GC, remodel, ADU | Moreno Valley · Riverside County | — | — |
| Envision Landscape | James Ernest Daniell | jim@envisionlandscape.com | (951) 782 0260 | Windows, patio, painters | Riverside · Riverside County | — | — |