| Business | Phone |
| Building Inspector 420 Hill St # B, Hollister 95023 | (831) 636-4355 |
| Domestic Treatment Plant 2690 San Juan Hollister Rd, Hollister 95023 | (831) 636-4350 |
| Engineering Dept 420 Hill St, Hollister 95023 | (831) 636-4340 |
| Hollister City Animal Control 1221 South St, Hollister 95023 | (831) 636-4320 |
| Hollister Housing Program 420 Hill St # A, Hollister 95023 | (831) 636-4316 |
| Hollister Human Resources Dept 375 5th St, Hollister 95023 | (831) 636-4308 |
| Hollister Information Systems 375 5th St, Hollister 95023 | (831) 636-4312 |
| Industrial Treatment Plant 1291 South St, Hollister 95023 | (831) 636-4353 |
| Planning Dept 420 Hill St, Hollister 95023 | (831) 636-4360 |
| Hollister City Council 375 5th St, Hollister 95023 | (831) 636-4300 |
| Hollister Housing Program 420 Hill St # A, Hollister 95023 | (831) 636-4386 |