| Reed Frank Construction | Frank Eugene Reed | — | (805) 857 0467 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Reed Mechanical Systems INC | Thomas Ray Reed | — | (805) 768 6824 | HVAC | Ventura · Ventura County | — | — |
| Reeds Tile & Stoneworks | Robert Jess Reed | — | (805) 405 4492 | Other | Newbury Park · Ventura County | — | — |
| Refined Construction | Rudy Joseph Barajas | — | (818) 271 8038 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Related Construction INC | Howard Jody Smuckler | — | (818) 262 3968 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Reliable Electric | Forrest Alan Van Wagoner | — | (805) 404 6945 | Electricians | Simi Valley · Ventura County | — | — |
| Reliable Enterprise Services | Jason Eric Abrams | — | (805) 427 4380 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Reliable Floor Covering INC | Jon Rumkin | — | (805) 495 4811 | Other | Westlake Village · Ventura County | — | — |
| Reliable Heating And Air Conditioning | Reliable Heating And Air Conditioning | — | (805) 798 1523 | HVAC | Ojai · Ventura County | — | — |
| Reliable Rooter Plumbing | Michael Lionel St Peter | — | (805) 583 4514 | Other | Simi Valley · Ventura County | — | — |
| Rellik Construction | Matthew David Hammitt | — | (818) 517 8158 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Rem Electric INC | Rembertus Sytze Schuil | — | (805) 889 3080 | Electricians | Ojai · Ventura County | — | — |
| Remington Grading INC | Edwin Ray Smith | — | (805) 640 7162 | Windows, patio, painters | Westlake Village · Ventura County | — | — |
| Ren Construction | Craig Arnold Reynolds | info@renconstruction.com | (805) 668 1214 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Renee Hall | Renee Hall | — | (805) 794 2973 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Rener Construction & Design INC | Rene Rafael | — | (323) 695 0831 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Renewal Revolution | Randall Allen Crosby | — | (805) 626 0315 | GC, remodel, ADU | Ojai · Ventura County | — | — |
| Rennova Construction Services | Emmanuel Alejandro Tellez | — | (661) 265 5601 | GC, remodel, ADU | Newbury Park · Ventura County | — | — |
| Renovation And Repair | Richard Varela Ornelas | — | (805) 395 2696 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Renovation Builder's | Renovation Builder's | — | (805) 302 2766 | GC, remodel, ADU | Oxnard · Ventura County | — | — |
| Renovise INC | Bonnie Lucille Beattie | — | (805) 320 0105 | Electricians | Camarillo · Ventura County | — | — |
| Reseda Masonry INC | Marcos Rosales-Aguilar | — | (818) 806 5911 | Other | Simi Valley · Ventura County | — | — |
| Residential Construction Home Builders INC | Denver Thomas Iv Dale | — | (310) 625 8175 | GC, remodel, ADU | Westlake Village · Ventura County | — | — |
| Residential Repair By Brad | Bradford Ernest Barba | — | (818) 675 5638 | GC, remodel, ADU | Moorpark · Ventura County | — | — |
| Restore & More | Keir Gian Milan | — | (818) 564 5615 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Retail Construction Group INC | Rudolfo Armando Lujan | — | (626) 523 7935 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Rethink Contracting INC | Zasho Andreas Donner | — | (805) 312 8282 | GC, remodel, ADU | Camarillo · Ventura County | — | — |
| Retrospect Development INC | Gary James Jr Hernandez | — | (805) 816 7497 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Reveles Construction | Andrew Raymond Reveles | — | (805) 340 2167 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Revolution Construction Services | Michael William Inskeep | — | (818) 968 0682 | GC, remodel, ADU | Thousand Oaks · Ventura County | — | — |
| Rex Thomas Plumbing INC | Rex Allen Thomas | — | (805) 643 1691 | Other | Ventura · Ventura County | — | — |
| Rey Con Construction INC | Roberto Reyes | — | (805) 525 5256 | GC, remodel, ADU | Santa Paula · Ventura County | — | — |
| Reyes Masonry Contractors INC | Augustine Reyes | — | (805) 525 8134 | Other | Santa Paula · Ventura County | — | — |
| Reyhaneh Heidarie | Reyhaneh Heidarie | — | (818) 470 5075 | Other | Simi Valley · Ventura County | — | — |
| Reynoso Landscapes | Reynoso Landscapes | — | (805) 402 4803 | Windows, patio, painters | Ventura · Ventura County | — | — |
| Rg Building & Remodeling | Rg Building & Remodeling | — | (805) 558 0110 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |
| Rg Construction | Randy James Guest | — | (805) 258 3335 | GC, remodel, ADU | Ventura · Ventura County | — | — |
| Rg Electric Enterprises INC | Gonzalez Ramon | — | (805) 340 8744 | Electricians | Ventura · Ventura County | — | — |
| Rg Pools And Spa | Rg Pools And Spa | — | (805) 396 4517 | Pool | Ventura · Ventura County | — | — |
| Rgk Construciton INC | Keith Christian Bellefontaine | — | (805) 526 4174 | GC, remodel, ADU | Simi Valley · Ventura County | — | — |