| Business | Phone |
| Little Princess Homes 171 Middle Country Rd, Middle Island 11953 | (631) 924-2662 |
| Coldwell Banker Neyland Realty 1293 Middle Country Rd., Middle Island 11953 | (631) 205-5300 |
| Mid Island Real Estate Inc 265 Middle Country Rd, Middle Island 11953 | (631) 924-4744 |
| Hough & Guidice Realty Assoc 200 Middle Country Rd, Middle Island 11953 | (631) 345-5600 |
| Infinity Group 315 Middle Country Rd, Middle Island 11953 | (631) 924-2400 |