| Jb General Construction | Bautista Sanchez Juan | — | (323) 747 3080 | GC, remodel, ADU | Riverside · Riverside County | — | — |
| Jb Heating And Air Corp | Jesus Salvadvor Bracamonte | — | (760) 460 7702 | HVAC | Thermal · Riverside County | — | — |
| Jb Painting Solutions | Jorge David Barrientos Chacon | — | (951) 379 6496 | Windows, patio, painters | Banning · Riverside County | — | — |
| Jb Prestige Construction LLC | Jose Antonio Benitez | — | (562) 506 6228 | GC, remodel, ADU | Lake Elsinore · Riverside County | — | — |
| Jb Roofing & Weatherproofing | Jose Alfredo Rafael | — | (951) 855 1603 | Other roofers | Nuevo · Riverside County | — | — |
| Jb3 HVAC | Jb3 HVAC | — | (951) 723 0811 | HVAC | Menifee · Riverside County | — | — |
| Jba Masonry | Jba Masonry | — | (760) 705 5137 | Other | Wildomar · Riverside County | — | — |
| Jbe Air Solutions INC | Jesus J Acosta | — | (951) 805 9690 | HVAC | Riverside · Riverside County | — | — |
| Jbg Tub Restoration LLC | Mareli Liliana Adame Almazan | — | (714) 793 3718 | Restoration | Riverside · Riverside County | — | — |
| Jbi Commercial Openings | Joseph Anthony Navarro | — | (833) 830 3672 | Other | Riverside · Riverside County | — | — |
| Jbj Tile & Stone INC | Brayan Alberto Quinonez Beltran | — | (760) 619 3858 | Other | Indio · Riverside County | — | — |
| Jbj Tile INC | Julio Cesar Aguilar-Juarez | — | (323) 702 9031 | Other | Corona · Riverside County | — | — |
| Jbl Concrete INC | Jorge Uriel Lopez Silvestre | — | (951) 522 4321 | Other | Riverside · Riverside County | — | — |
| Jbn Development Company INC DBA Jbn Electric | Emeterio Chagolla | — | (714) 862 5093 | Electricians | Riverside · Riverside County | — | — |
| Jbs Plastering INC | John Edward Boyle | — | (951) 898 8440 | Other | Corona · Riverside County | — | — |
| Jc & S Facility Management & Construction INC | Juan Carlos Barrantes Guerrero | — | (562) 686 6781 | GC, remodel, ADU | Corona · Riverside County | — | — |
| Jc Air/plumbing/construction Co | Joseph Anthony Chavez | — | (760) 835 0653 | HVAC | Indio · Riverside County | — | — |
| Jc Armour Roofing INC | Guzman Abdias Morales | — | (951) 764 1423 | Other roofers | Menifee · Riverside County | — | — |
| Jc Cabinets Installation Contractors INC | Casillas Javier | — | (951) 250 9717 | Other | Menifee · Riverside County | — | — |
| Jc Cal Construction INC | Haoran Chen | — | (626) 375 4576 | GC, remodel, ADU | Perris · Riverside County | — | — |
| Jc Cordova AC And Heating | Jc Cordova AC And Heating | — | (951) 892 1858 | HVAC | Perris · Riverside County | — | — |
| Jc Crew Drywall | Julio Cesar Rodriguez Juarez | — | (951) 212 5106 | Other | Riverside · Riverside County | — | — |
| Jc Custom Cabinets | Jc Custom Cabinets | — | (951) 816 7809 | Other | Winchester · Riverside County | — | — |
| Jc Energy | Jc Energy | — | (714) 824 0005 | Electricians | Riverside · Riverside County | — | — |
| Jc Express Mechanical Services INC | Juan Carlos Enriquez | — | (760) 578 9421 | HVAC | Desert Hot Springs · Riverside County | — | — |
| Jc Flooring Specialist INC | Jorge Castillo | — | (323) 877 7111 | Other | Moreno Valley · Riverside County | — | — |
| Jc Installations DBA Jc Floors | Jonathan Castillo | — | (323) 532 3417 | Other | Moreno Valley · Riverside County | — | — |
| Jc Renteria Pavers | Jc Renteria Pavers | — | (951) 374 9738 | Other | San Jacinto · Riverside County | — | — |
| Jc Telecom Solutions | Jc Telecom Solutions | — | (909) 268 1676 | Other | Eastvale · Riverside County | — | — |
| Jc Tile & Marble LLC | Jason Louigie Clester | — | (760) 832 7952 | Other | Palm Springs · Riverside County | — | — |
| Jc Tree Care And Landscape INC | Jorge Maximiliano Castelan | — | (714) 675 0978 | Other | Lake Elsinore · Riverside County | — | — |
| Jc's Electrical Services INC | Julio Cesar Robles | — | (323) 707 7358 | Electricians | Wildomar · Riverside County | — | — |
| Jc89 Construction INC | Teng Xiongfei | — | (626) 438 9539 | GC, remodel, ADU | Eastvale · Riverside County | — | — |
| Jcc Mechanical | Daniel James Lewis | d.lewis@jccmechanical.com | (562) 686 6878 | HVAC | Murrieta · Riverside County | — | — |
| Jcf Electric | Joseph Caesar Faciane | — | (951) 459 9970 | Electricians | Menifee · Riverside County | — | — |
| Jcg Coating INC | Christopher Gutierrez | — | (951) 613 5570 | Windows, patio, painters | Perris · Riverside County | — | — |
| Jcl General Construction | Julio Cesar Lopez | — | (213) 842 0964 | GC, remodel, ADU | Eastvale · Riverside County | — | — |
| Jcp&co | David Anthony Arciga | — | (951) 272 0262 | Windows, patio, painters | Corona · Riverside County | — | — |
| Jcr Custom Tile | Jesus Cruz | — | (760) 625 8668 | Other | La Quinta · Riverside County | — | — |
| Jcr Earthwork INC | Juan Carlos Rodriguez Caro | — | (909) 714 3788 | Other | Nuevo · Riverside County | — | — |