BBB Accredited Business Profile

Southwest Building Systems

Southwest Building Systems

(409) 385-3971

Southwest Building Systems

37 years in business
809 Hwy 327 East
Silsbee, TX 77656
Fax Numbers
  • (409) 385-5550
Additional Email Addresses
BBB File Opened: 12/08/1999
Business Started: 01/01/1981
Business Started Locally: 01/01/1981
Business Incorporated: 01/01/1996 in TX
Type of Entity
Business Management
  • Mr. Brent Thornhill, Manager
  • Mr. David Thornhill, President
Business Category
  • Sound System
  • Smoke Alarm Systems
  • Amplifier
  • Audio Visual Equipment
  • Intercom Systems
  • Microphone
  • Audio Visual Equipment Repair
  • Burglar Alarm Systems
  • Fire Protection Contractor
  • Security System Monitors

Products & Services
Fire Alarm Panels, devices and accessories. Security Cameras, Burglar Alarm devices, Portable Sound (Battery/AC operated). Mixing Consoles, Microphones Wireless and cabled. Microphone cables, Speakers, Electronic components , We also sell DYI products.
Service Area

Depending on need and product. Some Brands have territorial guidelines.

SBS focuses on customer service so 1 to 2 hours from Silsbee Texas is a guide for some Brands.

We have designed and installed in many States.


Alternate Business Names
  • G. Thornhill, Inc.
Licensing, Bonding or Registration
This business is in an industry that may require professional licensing, bonding or registration. BBB encourages you to check with the appropriate agency to be certain any requirements are currently being met.
Methods of Payment
  • Cash, Credit Cards, Checks, Certified Checks and Direct Deposits
BBB accredited business



Commercial, State and Government and select Residential Sales, Design, Consulting, Installation, Service, Inspections and Monitoring of  Life Safety and Communication Electronic Systems. Fire/Security/Burglar Alarms, Camera and Access Control Systems, Professional Sound/A/V and VoIP Intercoms.   

Fire/Security Inspections and Monitoring. Service Contracts.

BBB Reason for Ratings

BBB rating is based on 13 factors: Get the details about the factors considered.

Licensing information is provided in the BBB Business Profiles to inform the public about industries that may require professional licensing, bonding, or registration. Better Business Bureau encourages you to check with the appropriate agency to be certain any requirements are currently being met.
BBB promotes truth in advertising by contacting advertisers whose claims conflict with the BBB Code of Advertising. These claims come to our attention from our internal review of advertising, consumer complaints and competitor challenges. BBB asks advertisers to substantiate their claims, change ads to make offers more clear to consumers, and remove misleading or deceptive statements.
BBB reports on known significant government actions involving the business's marketplace conduct.
BBB reports on a company that is out of business for one year from the date the company closes its doors or ceases to do business.
BBB reports on unauthorized use of the Better Business Bureau's name and/or logo for as long as the business continues to use it in any advertising, or for one year after the business ceases any repeated unauthorized uses.
BBB reports on a business’s bankruptcy as long as the business remains in bankruptcy.
BBB reports when mail sent to the business was returned by the Postal Service.

Southwest Building Systems

Southwest Building Systems


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