| Business | Phone |
| Calvert Realty Agency Corp 168 Main St, Prince Frederick 20678 | (410) 535-1405 |
| Calvert Realty Agency Corp 80 King George Way, Prince Frederick 20678 | (410) 535-1405 |
| Fincham Appraisers 4825 Dennis Monnett Rd, Prince Frederick 20678 | (410) 535-1771 |
| Single Source Valuations 180 Main St, Prince Frederick 20678 | (410) 414-9777 |