| Sierra Seal Coating | Raymond Nickolas Maaskant | — | (559) 298 4437 | Other | Clovis · Fresno County | — | — |
| Sierra Tile Co | Alfonso Roger Sierra | — | (559) 819 0527 | Other | Kingsburg · Fresno County | — | — |
| Sierra View Construction | Curvin Roy Kreider | — | (559) 250 5716 | GC, remodel, ADU | Squaw Valley · Fresno County | — | — |
| Sierra Woodworking | Sierra Woodworking | — | (559) 999 1479 | Other | Prather · Fresno County | — | — |
| Sightline Consulting Design And Flooring INC | Ever Medina Sustaita | — | (559) 999 7323 | Other | Fresno · Fresno County | — | — |
| Sign Max | Debra Lyn Hunsaker | — | (559) 486 4570 | Other | Fresno · Fresno County | — | — |
| Sign Ranch | Rodrick William Johnson | — | (559) 356 0033 | Other | Reedley · Fresno County | — | — |
| Sign Systems INC | Arthur James Schmidt | — | (559) 432 5559 | Other | Fresno · Fresno County | — | — |
| Signature Life-safety Services INC | Dennis Michael Boyd | — | (559) 392 2838 | Electricians | Clovis · Fresno County | — | — |
| Signature Pools And Spa INC | Robert Steven Mellon | rsmellon@comcast.net | (559) 292 9099 | Pool | Clovis · Fresno County | — | — |
| Signature Touch Landscape INC | Duenas Alexis Soltero | — | (209) 635 3400 | Windows, patio, painters | Fresno · Fresno County | — | — |
| Siipola Construction | Reino A Siipola | — | (559) 299 6565 | GC, remodel, ADU | Clovis · Fresno County | — | — |
| Silva Seven Welding INC | Justin Allen Silva | — | (559) 210 4155 | Other | Mendota · Fresno County | — | — |
| Silva's Custom Concrete | Silva's Custom Concrete | — | (559) 978 3255 | Other | Kingsburg · Fresno County | — | — |
| Silver Creek Builders INC | Paul Alan Cotton | — | (559) 250 6445 | GC, remodel, ADU | Clovis · Fresno County | — | — |
| Silver Lining Construction | Darren Jacob Graef | — | (559) 289 8155 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Silver Maple Tree Service | Toro Juan Del | — | (559) 540 3918 | Tree | Fresno · Fresno County | — | — |
| Silverback Construction INC | Jose Ismael Jr Arreola | interested@domainmarket.com | (559) 907 0556 | Other | Fresno · Fresno County | — | — |
| Silverfox Electric INC | Shannon Dale Pasillas | office@silverfoxelectric.com | (559) 859 5438 | Electricians | Kingsburg · Fresno County | — | — |
| Silverline Contracting | Gerardo Farfan Arroyo | — | (559) 548 5713 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Simon And Son Earthworks General Engineering | Simon John Parish | — | (559) 797 0616 | Other | Sanger · Fresno County | — | — |
| Simplisafe | Simplisafe | customer-support@simplisafe.co.uk | — | Alarm and generators | Fresno · Fresno County | — | — |
| Simply Demo Works INC | Luis Octavio Zuniga Trejo | — | (559) 803 2998 | Other | Fresno · Fresno County | — | — |
| Singh Renovations INC | Jasjit Singh Gill | — | (559) 214 6084 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Ski's Tree Services | Ski's Tree Services | — | (559) 681-2577 | Tree | Fresno · Fresno County | — | — |
| Skills Construction Fresno INC | Sargsyan Arshak | contact@skills-construction.com | (559) 801 1408 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Sky Building Construction INC | Martinez Benito Ramos | — | (650) 630 0489 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Sky Construction General Contractors INC | Raudel Gonzalez | — | (559) 353 0798 | GC, remodel, ADU | Clovis · Fresno County | — | — |
| Sky-level Construction | Gomez Armando Renteria | — | (559) 458 9474 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Skyline Builders INC | Jimenez Gustavo | — | (408) 891 0380 | GC, remodel, ADU | Clovis · Fresno County | — | — |
| Skyline Tile INC | Francisco Javier Tapia Rioyos | info@skylinetile.com | (559) 404 8746 | Other | Clovis · Fresno County | — | — |
| Skyrise Towers | Juan Manuel Gonzalez | — | (559) 200 8031 | Other | Fresno · Fresno County | — | — |
| Slc Contracting LLC | Scott Bruce Logan | — | (559) 901 8323 | Other roofers | Clovis · Fresno County | — | — |
| Slim's Flooring INC | Yvonne Regina Telles | — | (559) 994 9796 | Other | Fresno · Fresno County | — | — |
| Sls Electric | Cuadros Sergio | — | (559) 305 6610 | HVAC | Reedley · Fresno County | — | — |
| Smart Home Improvements INC | Johnny Geehoon Rhee | — | (559) 999 3032 | Electricians | Fresno · Fresno County | — | — |
| Smart Pool Builders | Smart Pool Builders | — | (877) 320-9735 | Pool | Fresno · Fresno County | — | — |
| Smart's Pool Service INC | Kevin Vern Smart | — | (559) 226 8326 | Pool | Clovis · Fresno County | — | — |
| Smc Diversified INC | Samuel Mark Cavallaro | — | (559) 250 5231 | GC, remodel, ADU | Fresno · Fresno County | — | — |
| Smilanick Air Conditioning | Smilanick Air Conditioning | — | (559) 255 3572 | HVAC | Fresno · Fresno County | — | — |