Licensed contractors in Ontario, California
Contractors with an active California license and a business address in Ontario (San Bernardino County). Each listing shows what the state has on file.
- Rose Garden Landscaping INC
Active Insurance current
- Rovac Builder
Active No insurance on file
- Royalty Plumbing INC
Active Insurance current
- Rudolf Carl Theilacker Contractor
Active No insurance on file
- Ruvico INC
Active Insurance expiring soon
- Ryan Electric INC
Active Insurance current
- Rynoclad Technologies INC
Active Insurance current
- S C M Construction INC
Active No insurance on file
- Safe USA INC
Active Insurance expiring soon
- Safford Plumbing
Active No insurance on file
- Salas Electric CO
Active No insurance on file
- Salazar Electric LLC
Active No insurance on file
- Samuel Elias Milam
Active No insurance on file
- Sandoval
Active Insurance current
- Sandoval Construction
Active No insurance on file
- Santana Construction Enterprises
Active No insurance on file
- Santana's Iron Work
Active Insurance current
- Santoyo Construction
Active No insurance on file
- Scorpion Remodeling Consulting DBA United Water Restoration
Active Insurance current
- Senor Septic Construction & Pumping
Active No insurance on file
- Senor Septic Construction and Pumping INC
Active Insurance current
- Shamrock Landscape & Maintenance
Active Insurance current
- Shark General Building INC
Active Insurance current
- Shengyu Liu Construction
Active No insurance on file
- Sheppard's Coatings
Active No insurance on file
- Showcase Facility Solutions INC
Active Insurance current
- Showtime Family Plumbing & Rooter INC
Active Insurance current
- Sierra Construction
Active No insurance on file
- Sign City
Active No insurance on file
- Sign Industries INC
Active Insurance current
- Signarama Ontario
Active Insurance current
- Signature Signs
Active No insurance on file
- Signs of Success
Active Insurance current
- Signum Lux Corp
Active No insurance on file
- Silver Line Framing
Active No insurance on file
- Simington Painting Company
Active No insurance on file
- Simple Builds
Active No insurance on file
- Simple Restoration INC
Active Insurance current
- Singularity Construction INC
Active Insurance current
- Sitelogiq INC
Active Insurance current
- Sky Color Painting INC
Active No insurance on file
- Skyline Services LLC
Active Insurance current
- Skylinecraft Construction INC
Active No insurance on file
- Sm Waterworks Backflow Service
Active No insurance on file
- Smith Brothers Glass INC
Active Insurance current
- So-Cal Showerdoors
Active No insurance on file
- Solar Electrical Plus INC
Active Insurance current
- Solar Pro Electrical Solution INC
Active No insurance on file
- Solgar Construction INC
Active Insurance current
- Solid Drywall Works INC
Active No insurance on file
- Solid Integrity Construction
Active No insurance on file
- Solorio Construction
Active No insurance on file
- Southland Fire Protection CO
Active Insurance expiring soon
- Spec Construction & Development INC
Active No insurance on file
- Spec Construction CO INC
Active Insurance current
- Specialized Dairy Service INC
Active Insurance current
- Spicer Construction
Active No insurance on file
- Splash Painting California LLC
Active No insurance on file
- Stanger Construction and Remodel
Active Insurance current
- Star Hardware INC
Active Insurance current
- Steel Design Builders INC
Active Insurance current
- Steve Crossman
Active No insurance on file
- Steve Hong
Active No insurance on file
- Steven Elliott Construction
Active No insurance on file
- Steven Roy Tullos
Active No insurance on file
- Stone Age Mason
Active No insurance on file
- Stone Creations Incorporated
Active Insurance current
- Strong Base Concrete Construction
Active Insurance current
- Struct-Tech Builders
Active No insurance on file
- Sts Plumbing & Rooter INC
Active No insurance on file
- Sun Microgrid Solar INC
Active No insurance on file
- Sunwest Builders Tenant Improvements INC
Active Insurance current
- Super Mario Construction
Active No insurance on file
- Superheat Refrigeration
Active No insurance on file
- Superior Post Tension Repairs
Active No insurance on file
- Sutas Hangthaisong
Active No insurance on file
- Swan Painting
Active No insurance on file
- Sweet Water Landscaping
Active No insurance on file
- T & K Construction
Active No insurance on file
- T K Systems INC DBA a M F I
Active Insurance current
- Tapia Roofing
Active Insurance current
- Technical Pool Repair
Active No insurance on file
- Technicool Refrigeration
Active Insurance current
- Telecomp Enterprises INC
Active Insurance current
- Teleteks INC
Active No insurance on file
- Terral Dunn
Active No insurance on file
- Tfr Communications INC
Active Insurance current
- Thacker's Engineering
Active Insurance expiring soon
- The Amgraph Group
Active No insurance on file
- The Brush Whisperer Custom Decorative Painting
Active No insurance on file
- The Climate Controllers a Partnership
Active Insurance current
- The East Los Angeles Community Union
Active Insurance current
- The Goat Roofing LLC
Active No insurance on file
- The Masonry Company
Active No insurance on file
- The Mc Intyre Company a Calif Partnership
Active Insurance current
- The Paving Pros
Active No insurance on file
- The Specialist Plumbing
Active Insurance current
- Thomas Anderson Wallcovering INC
Active Insurance current
- Thomas Mcgee Development INC
Active No insurance on file
- Thor Mc Andrew Construction
Active Insurance current
Last checked against state records on Oct 4, 2026. How we get this data.