| Ray's Home Repair | Ray's Home Repair | — | (707) 287 2100 | GC, remodel, ADU | Napa · Napa County | — | — |
| Raymond Burch General Contractor | Raymond Burch General Contractor | — | (415) 515 1629 | GC, remodel, ADU | Napa · Napa County | — | — |
| Raymond D Schmitter Construction Management | Raymond Dennis Schmitter | — | (707) 265 9273 | GC, remodel, ADU | Napa · Napa County | — | — |
| Rc Plumbing LLC | Rutilio Gildardo Cortes | randy@rcplumbing.com | (707) 228 9251 | Other | Napa · Napa County | — | — |
| Rcm Home Inspection | Rcm Home Inspection | — | (707) 363-4990 | Inspectors | Napa · Napa County | — | — |
| Rd & Sons Builders INC | Ralph Andrew Smith | — | (707) 322 4666 | GC, remodel, ADU | Napa · Napa County | — | — |
| Rea Electric | Antonio Eliseo Rea | tony@reaelectric.com | (707) 228 6970 | Electricians | Napa · Napa County | — | — |
| Real Time Production LLC | Normann Steinar Larsen | — | (707) 225 8020 | GC, remodel, ADU | Napa · Napa County | — | — |
| Redwood Empire Termite & Pest Control | Redwood Empire Termite & Pest Control | info@redwoodempiretermite.com | (707) 837-0751 | Pest, tile roofs | Napa · Napa County | — | — |
| Reeves Construction | Patrick L Reeves | — | (707) 254 0995 | GC, remodel, ADU | St Helena · Napa County | — | — |
| Regal Contracting | Alvarez Gerardo | — | (707) 363 3044 | GC, remodel, ADU | Napa · Napa County | — | — |
| Regan & Sons Incorporated | Ryan Robert Regan | — | (707) 853 0545 | GC, remodel, ADU | Napa · Napa County | — | — |
| Reid Sheet Metal Services INC | Paul Clay Wagner | — | (707) 253 0909 | HVAC | American Canyon · Napa County | — | — |
| Reinell Construction | Frederick Edward Reinell | — | (707) 287 3052 | GC, remodel, ADU | Napa · Napa County | — | — |
| Reliable Refrigeration | Casey David Walker | — | (707) 252 7227 | HVAC | Napa · Napa County | — | — |
| Remodeling Specialties By Roldan | Enrique Hernandez Roldan | — | (707) 732 0299 | GC, remodel, ADU | Napa · Napa County | — | — |
| Reno's Floor Covering INC | Carolyn Bertha Reno | — | (707) 226 2933 | Other | Napa · Napa County | — | — |
| Resilience Concrete Group LLC | Justin Lyle Brown | — | (415) 295 2727 | Other | Napa · Napa County | — | — |
| Restorative Remodels And Repairs | Restorative Remodels And Repairs | — | (650) 669 4764 | GC, remodel, ADU | Napa · Napa County | — | — |
| Reyff Electric | Reyff Electric | — | (707) 421-2481 | Electricians | Fairfield · Napa County | — | — |
| Rh Heller Construction | Richard Henry Heller | — | (707) 333 6187 | GC, remodel, ADU | Napa · Napa County | — | — |
| Richard A Downing | Richard A Downing | — | (707) 853 2935 | Other | American Canyon · Napa County | — | — |
| Richard Beck | Richard Beck | — | (510) 409 4110 | Electricians | Napa · Napa County | — | — |
| Richner Painting | Richner Painting | mario@richnerpainting.com | (707) 967 9923 | Windows, patio, painters | Calistoga · Napa County | — | — |
| Rick Robben And Mark Crocker Plumbing LLC | Mark Allen Crocker | — | (707) 696 7486 | Other | Napa · Napa County | — | — |
| Rick Robben Construction LLC | Richard Gerald Robben | rickrobbenconstruction@gmail.com | (707) 332 7575 | GC, remodel, ADU | Napa · Napa County | — | — |
| Riel American Painting | Riel American Painting | — | (707) 815 7887 | Windows, patio, painters | Napa · Napa County | — | — |
| Rivera's Masonry | Rivera's Masonry | — | (707) 738 8546 | Other | St Helena · Napa County | — | — |
| Rlm Enterprises | Benjamin Gregory Martinez | — | (707) 252 9310 | Windows, patio, painters | Napa · Napa County | — | — |
| Rm Landscaping | Rm Landscaping | — | (707) 974 7914 | Windows, patio, painters | Napa · Napa County | — | — |
| Rmg Construction | Medina Gonzalez Rafael | — | (707) 339 1318 | GC, remodel, ADU | Napa · Napa County | — | — |
| Rmn Construction | Jose Omar Catalan | — | (707) 346 1620 | GC, remodel, ADU | Napa · Napa County | — | — |
| Rnr Concrete INC | Bejhan Paul Razi | — | (707) 226 3995 | GC, remodel, ADU | Napa · Napa County | — | — |
| Rob Howell Construction INC | Robert Wayne Howell | — | (707) 333 0628 | GC, remodel, ADU | Napa · Napa County | — | — |
| Rob Land Plumbing INC | Robert Michael Land | — | (707) 318 4722 | Other | Napa · Napa County | — | — |
| Roberson & Son Construction INC | Richard E Jr Roberson | — | (707) 307 9099 | GC, remodel, ADU | American Canyon · Napa County | — | — |
| Robert A Bradley Construction | Robert Anthony Bradley | — | (707) 373 9237 | GC, remodel, ADU | American Canyon · Napa County | — | — |
| Robert Dean Pegram | Robert Dean Pegram | — | (707) 695 4615 | GC, remodel, ADU | Calistoga · Napa County | — | — |
| Robert Mccollister Construction INC | Robert Paul Ii Mccollister | — | (707) 738 3507 | GC, remodel, ADU | Napa · Napa County | — | — |
| Robledo Iron Work | Robledo Iron Work | — | (707) 927 6598 | Other | Napa · Napa County | — | — |