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Houston, Harris County, Texas Internet Providers

A lot of my clients are in the dark about Breath Alcohol Ignition interlock Device (BAIDD) providers. Below you will find a list of providers that service the Greater Houston and Harris County, Texas area. Please understand that our law firm is not affliaited with any of these providers. We are just listing it here to be helpful.

Smart Start

Guardian Ignition Interlock
(800) 880-3394 All Locations

Baytown
3000 North Main, Suite 5B

Conroe
1300 South Frazier, Suite 408

Houston – Central
2401 Crawford, Suite A

Houston – North
18823 Tomato Street

Houston – West
1211 Upland, Suite H

La Marque
214 Byrd Street
Sugar Land (Stafford)
4150 Bluebonnet, Suite 108

Interlock Systems of Texas

Houston
9811 North Frwy, Suite B-210
(281) 448-1934/ (888) 302-3629

AZ Interlock

Conroe
100-B Hilbig
(936) 539-1377



EZ Interlock

Houston
609 Houston Ave.
(713) 223-4424/ (800) 826-2453

Houston
Parada Enterprises
5611 Dashwood, Suite A
(713) 349-9096

Katy
Westside Automotive
2241 Porter Road
(281) 391-6696



National Interlock

All Locations
(281) 313-1622/ (866) 863-4350

Friendswood
Auto Tech
303 North Friendswood Drive
Houston
521 West Gulf Bank Road

Katy
L&T Auto
1402 Greenbusch Rd, Suite 1500

Stafford
12783 Capricorn, Suite 900

The Woodlands
Repair One
6495 College Park
(800) 536-9134 – All Locations

Angleton
115 East Murray

Baytown
507 Gresham, Bay 3

Houston – Central
Certified Auto
1315 Saint Emanuel Street

Houston – North (Spring)
22820 I-45 North, Suite 3-P

Houston – South
5936 South Loop East

Houston – West
9811 Harwin, Suite K

La Marque
3047 Cedar Drive, Suite 103



Consumer Safety

(877) 777-5020 All Locations:

Houston
Car Audio Zone
10815 Beechnut, #128

A Frequency Car Audio
10541 FM 1960 West, #102

Unlimited Resources
6414 Gulf Freeway

Car Stereo Outlet
10998 North Freeway, Suite B

Dennis Automotive
5741 Westheimer

Categories: Clients, interlock
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The information on this website is for general information purposes only. Nothing on this or associated pages, documents, comments, answers, emails, or other communications should be taken as legal advice for any individual case or situation. This information on this website is not intended to create, and receipt or viewing of this information does not constitute, an attorney-client relationship.

Address: 2800 Post Oak Boulevard, Suite 6030, Houston, Texas 77056