| Business | Phone |
| Adary Electric Inc 157 Elm St, San Mateo 94401 | (650) 577-1100 |
| Alonso Electric San Mateo 94403 | (650) 574-3445 |
| Bay Area Electric Po Box 25081, San Mateo 94402 | (650) 345-5383 |
| Bayworks Inc San Mateo 94403 | (650) 401-3642 |
| Benson & Son Electric 1751 Leslie St, San Mateo 94402 | (650) 312-8222 |
| Bob's & Jiang's Electrical Svc San Mateo 94403 | (650) 577-9888 |
| Certified Electric Inc San Mateo 94401 | (650) 340-8161 |
| Cwk Electrical Inc 3358 Shasta Dr, San Mateo 94403 | (650) 578-1425 |
| Dannels Electric 823 Greenwood Ave, San Mateo 94401 | (650) 375-0797 |
| Delevan Electric For All Needs San Mateo 94401 | (650) 685-6617 |
| Dev Electric 630 Sylvan Ave, San Mateo 94403 | (650) 574-2100 |
| Echo Electric & Construction 2831 Garfield St, San Mateo 94403 | (650) 358-6940 |
| Electrovation 59 Burbank Ave, San Mateo 94403 | (650) 574-8548 |
| Fidelity Electric San Mateo 94403 | (650) 358-9727 |
| Gary Smith Electric 1728 Hamlet St, San Mateo 94403 | (650) 574-5396 |
| Hoffman Electric Co 133 Woodbridge Cir, San Mateo 94403 | (650) 574-5549 |
| Morton Brothers Electric San Mateo 94401 | (650) 342-7542 |
| Murray Electric Co 685 Bromfield Rd, San Mateo 94402 | (650) 344-8891 |
| Myles Davis Electric Inc San Mateo 94401 | (650) 343-8530 |
| Owens Electric Inc San Mateo 94403 | (650) 571-8001 |
| Prime Electric San Mateo 94403 | (650) 349-3600 |
| San Mateo Electric Inc San Mateo 94403 | (650) 574-0611 |
| Sharma Electrical Svc San Mateo 94401 | (650) 347-9333 |
| Summit Electric 3135 Campus Dr, San Mateo 94403 | (650) 341-5941 |
| Thornton Electric 1101 S Railroad Ave, San Mateo 94402 | (650) 326-3366 |
| Usa Svc Of Hayward 1597 Roberta Dr, San Mateo 94403 | (650) 358-3966 |