11/11/2025
Thank you, Veterans, for your sacrifice in service to our country!
SBS - Southwest Building Systems
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Providing Southeast Texas quality fire alarm and security installation and service. Fire and life safety is our priority and expertise. Greg Rebello is a U.S.
After nearly 45 years of dedicated ownership and a strong presence in Southeast Texas, the Thornhill family sold Southwest Building Systems (SBS) in May 2025. The new owners and operators, Greg and Sarah Rebello, are excited to carry forward the legacy of excellence while continuing to serve Southeast Texas with top-tier fire alarm, security, and access control services. Air Force veteran with ove
11/11/2025
SBS wishes all the kiddos, teachers and staff a safe and healthy back to school season.
01/16/2025
We extend our best wishes and prayers for a successful and prosperous 2025 for you, your companies, and families.
12/25/2024
Our company wants to wish you and yours a very Merry Christmas!!!!
04/04/2024
Electro-Voice & Dynacord key to major audio-visual upgrade at New Caney high school stadium Electro-Voice & Dynacord key to major audio-visual upgrade at New Caney high school stadium
04/03/2024
📌 Stadium Update
Electro-Voice & Dynacord key to major audio-visual upgrade at New Caney high school stadium Electro-Voice & Dynacord key to major audio-visual upgrade at New Caney high school stadium
03/03/2023
Many times over “Thanks” to the wonderful staff of SBS Southwest Building Systems!!!!
David Thornhill President
07/07/2021
Opening Soon!!
Another successful Fire Alarm installation at a local establishment.
07/01/2021
This Junior High received a sound system upgrade this week 🔉
06/17/2021
Not sure what’s behind your fire alarm pull stations or if your fire alarm devices have ever been cleaned?
Schedule an inspection with SBS and we can make sure to check it out.
06/08/2021
🔊🔊🔊
New Sound System Solution for this Cafetorium!
&heath
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Our Story
In 1981 George and Betty Thornhill formed Southwest Building Systems.
G. Thornhill Inc. dba Southwest Building Systems became incorporated in 1997 and is overseen by David Thornhill. In 2015 David became the CEO/President of SBS.
Brent Thornhill, the 3rd generation of this company, joined the team in 2005. Brent currently holds the General Manager position as of 2019, and is excited to continue to propel SBS into the future.
Our team provides design, installation, service and inspections for Fire Alarm, Intercom, Sound, Security, Surveillance and Access Control Systems. Monitoring is available at a competitive price for both Fire Alarm and Security Systems.Sound System Rentals are available upon request.
Location
Category
Telephone
Website
Address
Beaumont, TX
Opening Hours
| Monday | 7am - 4pm |
| Tuesday | 7am - 4pm |
| Wednesday | 7am - 4pm |
| Thursday | 7am - 4pm |
| Friday | 7am - 4pm |