| Business | Phone |
| Live Wire Electric 1056 E Edna Pl, Covina 91724 | (626) 858-7122 |
| Precision Electrical Contr 1416 E Cypress St, Covina 91724 | (626) 966-1559 |
| Southwest Constructors 114 E School St, Covina 91723 | (626) 332-1862 |
| Designing Electrical Constr 1445 N Ranger Dr, Covina 91722 | (626) 793-7934 |
| Hot Wire Electrical Contractor 915 W Arrow Hwy, Covina 91722 | (626) 674-9193 |
| Mike Diamond Plumbing Heating Covina 91722 | (626) 814-3277 |
| Accurate Electrical Services 1647 E. Palm Dr., Covina 91724 | (626) 331-4707 |