| Business | Phone |
| Zigler & Payne 8918 Center St, Manassas 20110 | (703) 257-4929 |
| B W Smith & Assoc Inc 9255 Corporate Cir, Manassas 20110 | (703) 368-5866 |
| Target Surveys Inc 8807 Sudley Rd 201, Manassas 20110 | (703) 368-8828 |
| Schools & Townsend Pc 9252 Mosby St, Manassas 20110 | (703) 368-8001 |
| Dewberry 10525 Battleview Pkwy, Manassas 20109 | (703) 369-4933 |
| Rice Associates 10625 Gaskins Way, Manassas 20109 | (703) 968-3200 |
| R C Harrover Land Surveyors Manassas 20110 | (703) 330-1106 |
| Rbt Engineering Inc 9401 East St, Manassas 20110 | (703) 368-1188 |
| Fennell Land Surveys 9406 Heather Ct, Manassas 20111 | (703) 257-5552 |
| Harold A Logan Assoc Pc 9114 Industry Dr, Manassas 20111 | (703) 941-3531 |
| Holmes Smith & Assoc 9708 Main St, Manassas 20110 | (703) 368-5829 |
| Jeff Warner Land Surveying Inc 9442 Center Point Ln, Manassas 20110 | (703) 369-5249 |