| Business | Phone |
| Building Dept 800 Dunlop Rd, Sanibel 33957 | (239) 472-4555 |
| Sewer System 800 Dunlop Rd, Sanibel 33957 | (239) 472-1008 |
| Sanibael Building Inspection 800 Dunlop Rd, Sanibel 33957 | (239) 472-8321 |
| Sanibel Administrative Dept 800 Dunlop Rd, Sanibel 33957 | (239) 472-3700 |
| Sanibel City Council 800 Dunlop Rd, Sanibel 33957 | (239) 472-4135 |
| Sanibel City Office 700 Beach Rd, Sanibel 33957 | (239) 395-2178 |
| Sanibel Planning Dept 800 Dunlop Rd, Sanibel 33957 | (239) 472-4136 |
| Donax Wastewater Plant 930 Donax St, Sanibel 33957 | (239) 472-3179 |