| Business | Phone |
| Centennial Hall Conference Center 22292 Foothill Blvd, Hayward 94541 | (510) 881-1911 |
| Hayward Accounts Payable 777 B St, Hayward 94541 | (510) 583-4060 |
| Hayward Accounts Receivable 777 B St, Hayward 94541 | (510) 583-4071 |
| Hayward Animal Control Office 16 Barnes Ct, Hayward 94544 | (510) 293-7200 |
| Hayward Building Div Hayward 94541 | (510) 583-4140 |
| Hayward City Collections 777 B St, Hayward 94541 | (510) 583-4622 |
| Hayward City Elections Hayward 94541 | (510) 583-4400 |
| Hayward City Equipment Manager Hayward 94541 | (510) 881-7914 |
| Hayward City Landscape & Tree 16 Barnes Ct # 3, Hayward 94544 | (510) 583-8906 |
| Hayward Engineering Dept 777 B St, Hayward 94541 | (510) 583-4730 |
| Hayward Human Resources Dept 777 B St, Hayward 94541 | (510) 583-4500 |
| Hayward Purchasing Dept Hayward 94541 | (510) 583-4800 |
| Hayward Recycling & Solid Wst Hayward 94541 | (510) 583-4722 |
| Hayward Risk Management 777 B St, Hayward 94541 | (510) 583-4452 |
| Hayward Sewer Maintenance 24499 Soto Rd, Hayward 94544 | (510) 881-7967 |
| Hayward Street Maintenance 24505 Soto Rd, Hayward 94544 | (510) 881-7745 |
| Hayward Water Maintenance 24505 Soto Rd, Hayward 94544 | (510) 881-7933 |