| 100 Congress Management OFC | Map It! | 100 Congress Avenue 455 Austin, TX 78701 | (512) 322-3200 |
| 1000 Beltline Partnership | Map It! | 1000 E Belt Line Road Carrollton, TX 75006 | (972) 242-6956 |
| 1001 Mc Kinney | Map It! | 1001 Mckinney Street 580 Houston, TX 77002 | (713) 651-3100 |
| 10925 Estate Lane LP | Map It! | 10925 Estates Lane, 175 Dallas, TX 75238 | (214) 340-5800 |
| 11511 Katy Freeway Management | Map It! | 11511 Katy Freeway Houston, TX 77079 | (281) 920-1821 |
| 12 Oaks Management Service | Map It! | 12221 Merit Drive Dallas, TX 75251 | (214) 871-2155 web |
| 120 Main Place | Map It! | 120 S Main Street 418 Victoria, TX 77901 | (361) 575-5717 |
| 1212 Building | Map It! | 1212 E Harrison Avenue 248 Harlingen, TX 78550 | (956) 421-4000 |
| 1500 Broadway Partners Limited | Map It! | Lubbock, TX 79401 | (806) 749-0997 |
| 1st Capital Investments | Info | , TX | (214) 335-1905 web |
| 2 Houston Center Building Office | Map It! | 909 Fannin Street 100 Houston, TX 77010 | (713) 654-1911 web |
| 2 M Mineral Management Service | Map It! | 9743 Copperway Converse, TX 78109 | (210) 658-9157 |
| 20 E Greenway Plaza Limited Prtnrs | Map It! | 20 E Greenway Plaza 150 Houston, TX 77046 | (713) 548-5300 |
| 2125 Yale | Map It! | 2125 Yale Street Houston, TX 77008 | (713) 864-2125 |
| 3 H Retail Management | Map It! | 13661 Jupiter Road, 300 Dallas, TX 75238 | (214) 341-4802 |
| 312 Management | Map It! | 3108 W 6th Street 312 Fort Worth, TX 76107 | (817) 332-8685 |
| 3311 Richmond | Map It! | 3311 Richmond Avenue Houston, TX 77098 | (713) 527-8883 |
| 340 & 350 North Belt | Map It! | 650 N Sam Houston Parkway East Houston, TX 77060 | (281) 931-4413 |
| 3400 Carlisle Limited | Map It! | 3400 Carlisle Street Dallas, TX 75204 | (214) 720-7506 |
| 3D International | Map It! | 420 Throckmorton Street Fort Worth, TX 76102 | (817) 255-2700 web |
| 3N Group LLC | Map It! | 300 South, Flores St San Antonio, TX 78204 | (210) 826-4615 |
| 4 M Properties Inc | Map It! | 8207 Callaghan Road, 400 San Antonio, TX 78230 | (210) 342-4242 web |
| 4 Z Management | Map It! | 13460 Spur 364 Tyler, TX 75709 | (903) 592-4772 web |
| 4-A Management | Map It! | 5000 E University Boulevard, 11 Odessa, TX 79762 | (432) 366-7776 web |
| 4-Way Investments | Map It! | 1229 E Pleasant Run Road, 132 Desoto, TX 75115 | (972) 218-8400 |
