Assurance One of Texas, LLC Share: Insurance Agencies Assurance One of Texas, LLC Visit Website 245 Commerce Green Blvd., Ste. 110 Sugar Land, TX 77478-3758 (281) 494-6400 (800) 985-4393 (281) 494-6414 (fax) About Map About Independent Insurance Professionals representing many of America's leading insurance carriers to provide protection for individuals, families and businesses in our local community. What's Nearby? Distance: 5 10 15 20 25 50 mi.