| Rickards Electrical Service | Kyle Eugene Rickards | — | (530) 605 9812 | Electricians | Anderson · Shasta County | — | — |
| Rider Fence Company | Nicholas Ryan Rider | — | (530) 276 4590 | Other | Redding · Shasta County | — | — |
| Ridgeline Builders Group INC | Brian Allen Walker | — | (530) 941 3725 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Ridgewood Construction | Craig James Shreffler | — | (626) 241 0641 | GC, remodel, ADU | Burney · Shasta County | — | — |
| Right Guys Construction And Repair LLC | Richard Alan Norrup | — | (530) 921 0820 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Right Hand Constructor | Right Hand Constructor | — | (530) 209 2981 | Other | Palo Cedro · Shasta County | — | — |
| Rim Rock Construction LLC | Jason Howard Gordon | — | (530) 335 3270 | GC, remodel, ADU | Old Station · Shasta County | — | — |
| Rincon Concrete | Rincon Concrete | hello@rfuenzalida.com | (530) 524 9909 | Other | Redding · Shasta County | — | — |
| Rising Moon Construction | James Moriah Moon | — | (530) 780 6158 | GC, remodel, ADU | Redding · Shasta County | — | — |
| River Valley Construction | David Gordon Zuckswert | — | (530) 941 0065 | GC, remodel, ADU | Palo Cedro · Shasta County | — | — |
| River Valley Electric | Joshua Edwin Parker | interested@domainmarket.com | (530) 870 2696 | Electricians | Fall River Mills · Shasta County | — | — |
| Rjm General Construction | Robert John Muhl | — | (707) 249 8189 | GC, remodel, ADU | Shingletown · Shasta County | — | — |
| Rkk Electric LLC | Ronald Keith Kuns | — | (916) 337 6589 | Electricians | Oak Run · Shasta County | — | — |
| Rkm Electric INC | Randy Keith Moad | — | (530) 524 1325 | Electricians | Redding · Shasta County | — | — |
| Rmc Refrigeration & Air Conditioning INC | Coleen Denise Richardson | — | (530) 515 4244 | HVAC | Redding · Shasta County | — | — |
| Rob Holte Construction Co | Rob Yule Holte | — | (530) 355 8176 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Rob Strieff | Rob Strieff | — | (530) 227 4708 | Other | Anderson · Shasta County | — | — |
| Rob's Heating & Cooling Service | Robert Harold Pearson | — | (530) 223 3467 | HVAC | Shasta Lake · Shasta County | — | — |
| Rob's Remedy | Rob's Remedy | — | (530) 524 5337 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Robert Close Construction | Robert Alan Close | — | (530) 917 5127 | GC, remodel, ADU | Cottonwood · Shasta County | — | — |
| Robert D Nichol Construction INC | Robert Dean Nichol | — | (530) 378 1131 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Robert David Frommer | Robert David Frommer | — | (530) 604 8736 | Other | Redding · Shasta County | — | — |
| Robert J Frank Construction | Robert Jerome Frank | — | (530) 222 1408 | Other | Redding · Shasta County | — | — |
| Robert J Frank Construction INC | Robert Jerome Frank | — | (530) 222 1408 | Other | Redding · Shasta County | — | — |
| Robert L Wilson Construction | Robert Lee Wilson | — | (530) 515 3110 | GC, remodel, ADU | Anderson · Shasta County | — | — |
| Robert Lockett Construction | Robert Shawn Lockett | — | (530) 355 3159 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Robert S Bryant General Contractor INC | Larry Wayne Goddard | — | (530) 241 6262 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Robert The Plumber Plumbing Service | Robert Edward Evans | — | (530) 474 6161 | Other | Shingletown · Shasta County | — | — |
| Robert Waterman Construction | Robert John Waterman | — | (530) 941 1186 | GC, remodel, ADU | Redding · Shasta County | — | — |
| Robertson Electric | Scott Lewis Robertson | — | (530) 567 8064 | Electricians | Cottonwood · Shasta County | — | — |
| Robles Electric | Robles Francisco | — | (510) 860 1323 | Electricians | Palo Cedro · Shasta County | — | — |
| Rock Creek Construction | Ryan James Miller | — | (530) 339 2788 | GC, remodel, ADU | Shasta · Shasta County | — | — |
| Rock Solid Landscaping DBA Eagle Landscape | Eagle Landscape | — | (530) 515 3025 | Windows, patio, painters | Redding · Shasta County | — | — |
| Rockhammer Enterprises DBA Nor Cal Granite & Tile | Jayson Brown Burris | — | (530) 378 2824 | Other | Cottonwood · Shasta County | — | — |
| Rodney R Nashem DBA Blind Master | Blind Master | — | (530) 515 2300 | Other | Cottonwood · Shasta County | — | — |
| Rojas Painting | Rojas Painting | rojaspainting@gmail.com | (707) 799-6104 | Windows, patio, painters | Redding · Shasta County | — | — |
| Romero Construction | Romero Jaime | — | (530) 560 5475 | GC, remodel, ADU | Bella Vista · Shasta County | — | — |
| Romero Quality Fencing | Romero Quality Fencing | romerofencing@gmail.com | (530) 945 5939 | Other | Redding · Shasta County | — | — |
| Ron Hammond | Ron Hammond | — | (530) 410 3472 | GC, remodel, ADU | Shasta Lake · Shasta County | — | — |
| Ron Harmon Painting INC | Ronny Lee Harmon | — | (530) 215 6223 | Windows, patio, painters | Redding · Shasta County | — | — |