| Business | Phone |
| Assessing Office 7 Monument Sq, Hollis 3049 | (603) 465-9860 |
| Hollis Building Inspector 7 Monument Sq, Hollis 3049 | (603) 465-2514 |
| Hollis Communication Ctr 9 Silver Lake Rd, Hollis 3049 | (603) 465-2303 |
| Hollis Selectmen 7 Monument Sq, Hollis 3049 | (603) 465-2780 |