| Sierra Disaster Restoration INC | James Duane Johnson | — | (530) 295 1608 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Sierra Elite Construction | Blair Leon Dixson | — | (916) 397 0603 | GC, remodel, ADU | Somerset · El Dorado County | — | — |
| Sierra Energy & Electric INC | Kevin Lee Matteson | info@sierra-energy.com | (530) 350 7226 | Electricians | El Dorado Hills · El Dorado County | — | — |
| Sierra Energy Savers | Matthew John Hopkins | — | (916) 616 7800 | Electricians | Shingle Springs · El Dorado County | — | — |
| Sierra Foothill Construction | Brian Alan Mendenhall | — | (530) 363 2740 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Sierra Foothill Fence INC | Gerrit Ashman Certa | — | (530) 545 1108 | Other | Somerset · El Dorado County | — | — |
| Sierra Home Enterprises | Jason Alexander Jackson | info@sierrahomeinspection.com | (530) 363 3090 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Sierra Interiors | Sierra Interiors | — | (530) 558 9645 | Other | El Dorado Hills · El Dorado County | — | — |
| Sierra Landscape And Design | Sierra Landscape And Design | — | (916) 247 7325 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Sierra Lumber And Tree | Sierra Rose Lehr | — | (530) 558 1428 | Other | Placerville · El Dorado County | — | — |
| Sierra Mountain Construction | Jason Richard Smith | — | (916) 343 3834 | GC, remodel, ADU | Placerville · El Dorado County | — | — |
| Sierra Nevada Overhead Door | Sierra Nevada Overhead Door | — | (530) 409 5380 | Other | Pollock Pines · El Dorado County | — | — |
| Sierra Nevada Quality Construction & Remodeling | Clifton Reed Dutton | — | (530) 306 5962 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Sierra Nevada Sealcoating & Asphalt INC | Andrew Scott Butcher | — | (530) 644 8888 | Other | Placerville · El Dorado County | — | — |
| Sierra Pacific Tree Care INC | Mauro Lara Rios | — | (530) 651 3050 | Tree | Placerville · El Dorado County | — | — |
| Sierra Peaks Electric | Matthew Richard Vanhorn | — | (530) 307 1619 | Electricians | South Lake Tahoe · El Dorado County | — | — |
| Sierra Remodeling | Sierra Remodeling | — | (530) 545 0311 | GC, remodel, ADU | Pollock Pines · El Dorado County | — | — |
| Sierra Renovations | Kelsey Ann Scott | office@sierrarenovations.com | (916) 933 3892 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Sierra Security & Fire | Sierra Security & Fire | — | (530) 644 3003 | Electricians | Pollock Pines · El Dorado County | — | — |
| Sierra Services | Scott Thearle Whilden | — | (530) 307 2818 | Pool | South Lake Tahoe · El Dorado County | — | — |
| Sierra Side Landscape | Sierra Side Landscape | — | (530) 306 8617 | Windows, patio, painters | Placerville · El Dorado County | — | — |
| Sierra Sign Company | Paige Elizabeth Cooper | — | (530) 677 0449 | Other | Shingle Springs · El Dorado County | — | — |
| Sierra Sustainable Builders INC | Cory Ray Hannaford | — | (530) 318 2084 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| Sierra Synthetic Putting Greens And Grass | Andrew Connors Cronin | — | (916) 316 6521 | Other | El Dorado Hills · El Dorado County | — | — |
| Sierra Turf And Greens | Sierra Turf And Greens | — | (916) 458 4121 | Other | Rescue · El Dorado County | — | — |
| Sierra Valley Electric INC | Vincent Craig Ball | — | (775) 589 6500 | Electricians | South Lake Tahoe · El Dorado County | — | — |
| Sierracon INC | Joseph David Stewart | — | (530) 544 1030 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| Sierrra Gate Service | William Conrad Ladley | — | (530) 621 1438 | Other | Shingle Springs · El Dorado County | — | — |
| Siewert Heavy Industries | Siewert Heavy Industries | — | (530) 558 1092 | GC, remodel, ADU | Shingle Springs · El Dorado County | — | — |
| Silva Painting INC | Brandon Michael Silva | — | (916) 289 8341 | Windows, patio, painters | Diamond Springs · El Dorado County | — | — |
| Silva Valley Construction | Anthony Wayne Silva | — | (800) 274 2811 | GC, remodel, ADU | El Dorado Hills · El Dorado County | — | — |
| Silveira Construction | Christopher Edward Silveira | — | (530) 400 3301 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Silver Edge General Construction | Sean Alan Breen | — | (530) 807 7633 | GC, remodel, ADU | South Lake Tahoe · El Dorado County | — | — |
| Silver Star Construction | Michael Peter Caturegli | — | (650) 868 4244 | GC, remodel, ADU | Cameron Park · El Dorado County | — | — |
| Silverado Stone Design | Silverado Stone Design | silveradostonedesign@gmail.com | (916) 221 2352 | Other | Cameron Park · El Dorado County | — | — |
| Silverado Stone Design INC | David Robert Kuhnel | silveradostonedesign@gmail.com | (530) 676 9025 | Other | Cameron Park · El Dorado County | — | — |
| Simerly Construction INC | Eric Scott Simerly | — | (530) 417 7458 | Other | Cameron Park · El Dorado County | — | — |
| Simmons Custom Cabinets And Refacing | Simmons Custom Cabinets And Refacing | — | (916) 289 5109 | Other | El Dorado Hills · El Dorado County | — | — |
| Simmons Fire Systems | Simmons Fire Systems | — | (925) 323 9603 | Other | Placerville · El Dorado County | — | — |
| Simms Electric | Robert Edward Dal Porto | — | (650) 676 0860 | Electricians | Shingle Springs · El Dorado County | — | — |