| Business | Phone |
| Security Professionals Of Tx 7350 Senate St, Houston 77040 | (713) 896-1530 |
| Global Executive Protection 11206 Sagevalley Dr, Houston 77089 | (281) 464-2244 |
| Guardsmark Inc 5701 Woodway Dr, Houston 77057 | (713) 783-0264 |
| Jatex Security Svc 6776 Southwest Fwy 580, Houston 77074 | (713) 783-5289 |
| Silver Star Security Inc 9000 Southwest Fwy 204, Houston 77074 | (713) 270-8446 |
| Allied Security 9100 Southwest Fwy # 245, Houston 77074 | (713) 995-7900 |
| Davidson Protective Svc Inc 2825 Wilcrest Dr 667, Houston 77042 | (713) 266-4280 |
| International Guards Inc 2825 Wilcrest Dr 117, Houston 77042 | (713) 780-9567 |
| Sterling Protective Svc Inc 10700 Richmond Ave 100, Houston 77042 | (713) 974-5400 |
| Twin City Security 9800 Richmond Ave 480, Houston 77042 | (713) 952-4003 |
| West Belt Townhomes 10313 1/2 Briar Forest Dr, Houston 77042 | (713) 953-0521 |
| A Better Security & Invstgtns 4302 Reed Rd, Houston 77051 | (713) 738-0816 |
| Acss 2135 Gulf Central Dr, Houston 77023 | (713) 928-9292 |
| Action Security Co 12007 Pecan Meadow Dr, Houston 77071 | (713) 772-7139 |
| Adt Promotions 14734 Lerner Dr, Houston 77015 | (713) 453-7171 |
| Ahl Svc Inc 507 N Sam Houston Pkwy E, Houston 77060 | (281) 448-3214 |
| Allied Security 7925 Fm 1960 Rd W, Houston 77070 | (281) 894-1148 |
| Allstate Security 2616 South Loop W, Houston 77054 | (713) 662-3640 |
| American Black Hawk Security 2020 Southwest Fwy, Houston 77098 | (713) 526-7477 |
| American Citadel Guards 8800 Citypark Loop, Houston 77013 | (713) 678-4633 |
| American Commercial Security 2135 Gulf Central Dr, Houston 77023 | (713) 926-4453 |
| American K-9 Bomb Search 14133 Memorial Dr 1, Houston 77079 | (713) 868-4242 |
| American Security Officer's 4604 Main St, Houston 77002 | (713) 526-7477 |
| Ameritgex Security Co 4811 Oakland St 3, Houston 77023 | (713) 924-6973 |
| Andy Frain Security 4141 North Fwy 107, Houston 77022 | (713) 699-1664 |
| Bates Security & Investigation 9901 Cypresswood Dr, Houston 77070 | (281) 376-3321 |
| Armadillo Security Svc 7007 Gulf Fwy 160, Houston 77087 | (713) 645-2711 |
| At Systems Security 11757 Katy Fwy, Houston 77079 | (281) 497-7333 |
| At Systems Security Inc 1500 West Loop N 140, Houston 77008 | (713) 861-6083 |
| B P Security & Investigations 2600 South Loop W, Houston 77054 | (713) 661-2090 |
| Allied Barton Security Svc 1001 West Loop S, Houston 77027 | (713) 977-5995 |
| Bayou City Patrol 6420 Hillcroft St 500, Houston 77081 | (713) 932-1810 |
| Beechnut Park Courtesy Guard 8620 Hemlock Hill Dr, Houston 77083 | (281) 561-7126 |
| Briarwick 2750 Holly Hall St, Houston 77054 | (713) 748-8360 |
| Capital Protective Svc 15604 Martineau St, Houston 77032 | (281) 219-4626 |
| Chapel Security Houston 77099 | (281) 530-5663 |
| City Rangers Security Enfrcmnt 7400 Harwin Dr 217, Houston 77036 | (713) 266-0555 |
| Cobra Security Inc 8561 Long Point Rd 200, Houston 77055 | (713) 467-0460 |
| Cognisa Security 3730 Kirby Dr, Houston 77098 | (713) 831-6831 |
| Correctional Services Corp 1511 Preston St, Houston 77002 | (713) 223-0601 |
| County Wide Security & Patrol 14800 Memorial Dr, Houston 77079 | (832) 379-9911 |
| D & F Security Svc 11250 West Rd I, Houston 77065 | (281) 890-2910 |
| Datapol 4530 Briar Hollow Pl 218, Houston 77027 | (281) 443-7344 |
| Day & Zimmermann Inc 4635 Southwest Fwy 550, Houston 77027 | (713) 623-4210 |
| Dsi Security Svc Houston 77075 | (713) 991-2080 |
| En Garde Protective Svc 4111 North Fwy, Houston 77022 | (713) 229-0200 |
| Executive International 222 Pennbright Dr 117, Houston 77090 | (281) 852-3660 |
| Executive Security 3 Northpoint Dr 200, Houston 77060 | (281) 820-5700 |
| Federation Security Agency 10130 Long Point Rd, Houston 77043 | (713) 464-0965 |
| Five Star Staff 12806 Ashford Pine Dr, Houston 77082 | (281) 759-1242 |
| Front Line Protective Svc 1445 North Loop W, Houston 77008 | (713) 861-6202 |
| Memorial City Security 900 Gessner Rd # 303, Houston 77024 | (713) 464-7744 |
| Security Booth 301 Studemont St, Houston 77007 | (713) 880-8241 |
| Memorial Thicket Guardhouse 702 Plainwood Dr, Houston 77079 | (281) 870-0203 |
| Gulf Coast Security Svc Inc 1830 S Kirkwood Rd 101, Houston 77077 | (281) 493-9444 |
| Magnum Force Security 11811 East Fwy 302, Houston 77029 | (713) 330-1500 |
| H W Security 3200 Brookfield Dr, Houston 77045 | (713) 413-9660 |
| M S Patrol Inc 7707 Fannin St 120, Houston 77054 | (713) 795-0002 |
| Hargraves Co 2402 Bay Area Blvd G, Houston 77058 | (281) 286-1155 |
| Harris County Patrol Svc 6633 Hillcroft St, Houston 77081 | (713) 995-0677 |
| Harris Protective Svc 16802 Britford, Houston 77084 | (281) 858-8808 |
| Highway Security Patrol 6633 Hillcroft St, Houston 77081 | (713) 995-8006 |
| Lakes Of Parkway Guard Hse 1700 Lakes Of Pkwy, Houston 77077 | (281) 679-8316 |
| Houston Harris Patrol Div 6420 Richmond Ave 520, Houston 77057 | (713) 975-9922 |
| Houston Protective Svc & Sec 6633 Hillcroft St, Houston 77081 | (713) 974-5260 |
| Kenyon International Emergency 15180 Grand Point Rd, Houston 77090 | (281) 872-6074 |
| Kim Private Eye Security 4837 Kinglet St, Houston 77035 | (713) 723-8916 |
| Huntligh Usa Corp 16630 Imperial Valley Dr 106, Houston 77060 | (281) 405-8953 |
| Keller Guard Svc Inc 3605 Katy Fwy, Houston 77007 | (713) 868-2639 |
| Impace Security Svc Inc 4100 North Fwy 200, Houston 77022 | (713) 941-6200 |
| Industrial Security Svc Corp 3355 W Alabama St 600, Houston 77098 | (713) 528-5800 |
| Initial Security 13430 Northwest Fwy, Houston 77040 | (713) 772-0333 |
| Initial Security 480 N Sam Houston Pkwy E, Houston 77060 | (281) 445-6767 |
| Initial Security 7015 Gulf Fwy 201, Houston 77087 | (713) 644-3827 |
| Initl Security 10333 Harwin Dr # 300, Houston 77036 | (713) 773-6700 |
| Ipc Intl 17355 State Highway 249 1, Houston 77064 | (281) 517-0525 |
| Mps Security Svc 2180 North Loop W 110, Houston 77018 | (713) 787-0278 |
| Mustang Security 5500 Katy Fwy, Houston 77007 | (713) 864-8800 |
| National Loss Prevention 5644 Westheimer Rd 510, Houston 77056 | (281) 657-1490 |
| Nationwide Investigation 2425 West Loop S, Houston 77027 | (713) 297-8830 |
| Houston Security Guards 3724 FM 1960 West Rd, No 209, Houston 77068 | (800) 951-8701 |