| Rod Brawley Construction & Development | Rodney Lee Brawley | — | (209) 722 7307 | GC, remodel, ADU | Merced · Merced County | — | — |
| Rodman Construction | Manriquez Hirales Rodrigo | — | (209) 352 4705 | GC, remodel, ADU | Merced · Merced County | — | — |
| Rogers Construction | Roger Arturo Tejeda | — | (209) 648 1539 | Other roofers | Stevinson · Merced County | — | — |
| Rolfe Construction INC | Dennis Lee Rolfe | — | (209) 358 5548 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Romo Concrete Co | Romo Pio | — | (408) 598 7217 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Ronald Gene Koehn | Ronald Gene Koehn | — | (209) 535 8249 | GC, remodel, ADU | Livingston · Merced County | — | — |
| Ronnys INC | Ronny Jose Navarro | — | (209) 827 9858 | Windows, patio, painters | Los Banos · Merced County | — | — |
| Rooster Custom Painting | Rooster Custom Painting | — | (209) 416 1729 | Windows, patio, painters | Winton · Merced County | — | — |
| Roy & Rogers Garden Landscape | Roy & Rogers Garden Landscape | — | (408) 981 7396 | Windows, patio, painters | Los Banos · Merced County | — | — |
| Royal Telecommunications | Royal Telecommunications | — | (209) 827 6302 | Other | Los Banos · Merced County | — | — |
| Rs General Construction | Perez-osorio Ramiro | — | (209) 628 1078 | GC, remodel, ADU | Merced · Merced County | — | — |
| Rudy Buendia Construction | Rudy Iii Buendia | — | (209) 201 7772 | GC, remodel, ADU | Planada · Merced County | — | — |
| Russell B Marks | Russell B Marks | — | (209) 535 8749 | GC, remodel, ADU | Merced · Merced County | — | — |
| Rwsi | Julio Ruiz Sr Hernandez | — | (209) 596 8655 | Other | Delhi · Merced County | — | — |
| Ryan Thomas Electric | Ryan Dean Thomas | — | (408) 718 8649 | Electricians | Los Banos · Merced County | — | — |
| Ryder Electric | Adrian Carlos Amaya | info@ryder-electric.com | (209) 417 2416 | Electricians | Atwater · Merced County | — | — |
| S & J Construction INC | Santos Alonso Tut-Escobedo | — | (510) 860 9691 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| S A Tatum Construction | Steven Aaron Tatum | — | (209) 628 3015 | GC, remodel, ADU | Merced · Merced County | — | — |
| S Double A Construction LLC | Santiago Garcia Guzman | — | (209) 631 5478 | GC, remodel, ADU | Merced · Merced County | — | — |
| S M Concrete INC | Sergio Duran | — | (209) 756 0304 | Other | Winton · Merced County | — | — |
| S R S Construction | Stephen Robert Sherwood | — | (209) 675 5631 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Sabrina Sotelo Design & Construction | Sabrina Marie Sotelo | — | (209) 741 7752 | GC, remodel, ADU | Atwater · Merced County | — | — |
| Safe Scope Electric | Rodriguez Lemus Jonathan | — | (209) 675 1530 | Electricians | Los Banos · Merced County | — | — |
| Safti First (glass Manufacturing) | Safti First (glass Manufacturing) | — | (888) 653-3333 | Windows, patio, painters | Merced · Merced County | — | — |
| Saints Of Paint INC | Derrick Joshua Perry | — | (209) 626 9947 | Windows, patio, painters | Atwater · Merced County | — | — |
| Sal Process Welding Services INC | Salvador Ramirez-Chavez | — | (209) 486 5289 | Other | Delhi · Merced County | — | — |
| Sal's Gardening Corp | Jesus Duran | — | (209) 261 4245 | Windows, patio, painters | Winton · Merced County | — | — |
| Salty Dog Welding | Blake Mitchell Giles | — | (209) 678 0489 | Other | Gustine · Merced County | — | — |
| Sam's Remodeling And Construction INC | Samuel Orrego Blanco | — | (650) 787 3337 | GC, remodel, ADU | Merced · Merced County | — | — |
| Samano Construction | Samano Sanchez Miguel | — | (209) 917 0389 | GC, remodel, ADU | Merced · Merced County | — | — |
| San Joaquin Pest Control Of Merced | San Joaquin Pest Control Of Merced | — | (209) 723-1191 | Pest, tile roofs | Merced · Merced County | — | — |
| Santo's Tile Works INC | Santos Javier Pulido | — | (408) 470 0203 | Other | Los Banos · Merced County | — | — |
| Santos Valley Landscape Design INC | Efrain Santos-Perez | — | (209) 233 2665 | Windows, patio, painters | Merced · Merced County | — | — |
| Satellite Grading LLC | Charles Alan Mc Elvany | — | (209) 826 1102 | Other | Los Banos · Merced County | — | — |
| Schmidt Concrete Construction | Ralph Scott Schmidt | — | (209) 349 1176 | Other | Atwater · Merced County | — | — |
| Scn Cabinets LLC | Enrique Jr Nuno | — | (209) 767 3646 | Other | Delhi · Merced County | — | — |
| Scott Edwards Welding | Scott Edwards Welding | — | (209) 638 2183 | Other | Delhi · Merced County | — | — |
| Scott Simmons Construction | Gregory Scott Simmons | — | (408) 489 3086 | GC, remodel, ADU | Merced · Merced County | — | — |
| Segovia Construction | Segovia Daniel | — | (408) 420 2008 | GC, remodel, ADU | Los Banos · Merced County | — | — |
| Select Property Management | Select Property Management | infomerced@selectpropmgt.com | (209) 383-6277 | Property managers | Merced · Merced County | — | — |