| Business | Phone |
| Finance Office 501 Main St, Half Moon Bay 94019 | (650) 726-8280 |
| Half Moon Bay Bldg Permits Half Moon Bay 94019 | (650) 726-8794 |
| Half Moon Bay Business License 501 Main St, Half Moon Bay 94019 | (650) 726-8273 |
| Half Moon Bay Planning Comm 501 Main St, Half Moon Bay 94019 | (650) 726-8250 |
| Half Moon Bay Sewer Treatment 1000 Cabrillo Hwy N, Half Moon Bay 94019 | (650) 726-0124 |