| R Rivera General Landscaping | R Rivera General Landscaping | — | (408) 829 8466 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| R Rogers Electric INC | Ronnie Lee Jr Rogers | — | (408) 460 7229 | Electricians | Morgan Hill · Santa Clara County | — | — |
| R S Fencing | R S Fencing | — | (408) 472 9442 | Other | San Jose · Santa Clara County | — | — |
| R S V Fusion Builders | R S V Fusion Builders | — | (408) 644 7255 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| R T D Electric | Ryan Thomas Duff | — | (408) 608 8651 | Electricians | Sunnyvale · Santa Clara County | — | — |
| R T Tile Company INC | Martha Ines Rocha | — | (408) 892 6965 | Other | San Jose · Santa Clara County | — | — |
| R Titus Waterproofing | R Titus Waterproofing | — | (408) 813 9647 | Windows, patio, painters | Morgan Hill · Santa Clara County | — | — |
| R Twyns Construction INC | Timothy Michael Reynolds | rtwynsconstruction@gmail.com | (408) 598 0699 | GC, remodel, ADU | Campbell · Santa Clara County | — | — |
| R W Construction Co | Robert Wayne Ippoliti | — | (408) 206 6139 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| R Z Construction | Rodriguez Ramirez Roberto | — | (408) 829 1134 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| R&b Master Construction INC | Ruslan Banakhovskyi | info@rbmasterconstruction.com | (650) 800-9661 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| R&j Landscaping LLC | Randy Allen Miller | — | (408) 687 2456 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| R&r Backyard Remodeling INC | David Allen Ii Dent | — | (669) 309 7011 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| R2d2 Construction INC | Slavko Micic | — | (650) 722 0134 | Electricians | San Jose · Santa Clara County | — | — |
| Ra Heating & Air INC | Roberto Rios Arellano | — | (669) 339 4974 | HVAC | Morgan Hill · Santa Clara County | — | — |
| Rabello's Custom Cabinets INC | Rick Aloysius| Rabello Rickey Aloysius Rabello | — | (408) 453 0690 | Other | San Jose · Santa Clara County | — | — |
| Rabit Architecture INC DBA Rabit Design Build | Xinxin Nong | — | (510) 590 0578 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Rad Air Care Us | Mahtab Dashab | — | (408) 556 0009 | HVAC | Campbell · Santa Clara County | — | — |
| Radar Electric Co | Ray Si-lei| Cheng Si-lei Ching | — | (408) 828 1902 | Electricians | Milpitas · Santa Clara County | — | — |
| Rader Electric | Charles Eddy Rader | steve@raderelectric.com | (408) 893 5126 | Electricians | San Jose · Santa Clara County | — | — |
| Radius Earthwork INC | Janamjit Singh Gondara | info@radiusearthwork.com | (408) 384 8630 | Other | Campbell · Santa Clara County | — | — |
| Radonich Corp DBA Cal Coast Telecom | Rick Marshall Radonich | — | (408) 275 8888 | Other | San Jose · Santa Clara County | — | — |
| Rafael Donis | Rafael Donis | — | (650) 669 5373 | Other | San Jose · Santa Clara County | — | — |
| Rafael Rivera Vargas | Rafael Rivera Vargas | — | (408) 645 4465 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Rafi Painting INC | Villafuentes Altamirano J Rafael | — | (408) 849 6330 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Rahim Muslumov LLC | Alex Makeev | — | (408) 656 0110 | GC, remodel, ADU | Milpitas · Santa Clara County | — | — |
| Rai Builder | Rai Builder | — | (925) 550 4476 | GC, remodel, ADU | Los Gatos · Santa Clara County | — | — |
| Rainbow Electric | Yin Zhicheng | — | (408) 529 7928 | Electricians | Milpitas · Santa Clara County | — | — |
| Rainbow Painting Contractors | Hector Ramon Quintero | info@rainbowpaintingcontractors.com | (408) 648 5874 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Rainbow Restoration Of San Jose | Hassanabadi Ardeshir Zandian | — | (408) 577 7786 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Rainbowtechs INC | Ren-Chau James Hu | — | (408) 309 0145 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Raintree INC | Scott Brian Sleight | — | (408) 600 8001 | Windows, patio, painters | San Jose · Santa Clara County | — | — |
| Raised Floor Installation Of California | Manuel Luevenos Montijo | — | (408) 453 0581 | Other | San Jose · Santa Clara County | — | — |
| Raisempire Construction INC | Billy Abiel Alcantara | — | (650) 521 1433 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Rake Construction INC | Rogelio Flores | — | (408) 426 1946 | GC, remodel, ADU | San Jose · Santa Clara County | — | — |
| Rall Plumbing | Rall Plumbing | — | (408) 509 6252 | Other | Campbell · Santa Clara County | — | — |
| Ralls Construction Corporation | Jerry Vern Ralls | jarred@rallsconstruction.com | (408) 244 9600 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |
| Rally Roofing LLC | Price William Foulger | — | (831) 588 1290 | Other roofers | Campbell · Santa Clara County | — | — |
| Ralston Landscaping | Ralston Landscaping | ralstonlandscaping@yahoo.com | (408) 334 4454 | Windows, patio, painters | Morgan Hill · Santa Clara County | — | — |
| Ralston's Construction | Jakeb Rey Ralston | — | (408) 505 1238 | GC, remodel, ADU | Santa Clara · Santa Clara County | — | — |